Become a Tuning Pro: hpcdmy.co/dr4a Support the channel by shopping through this link: amzn.to/3RIqU0u Patreon: www.patreon.com/d4a There's a mistake in the compression ratio calculations when the volume increases by 5cc at 00:54. The total volume increases by 5 too so it becomes 505/55 and not 500/55 which means the result is 9.18 and not 9.01. The example obviously still works and the logic is the same but the number isn't correct. Thank you to @sagi fern for pointing this out.
@chupachups60983 жыл бұрын
No Bro... you were right. Sorry, and @sagi (sorry sagi) was wrong: the displacement of a cylinder is NOT the total volume of the cylinder/chamber system. The displacement of an engine is the result of the volume determined by (bore x stroke). The displacement change only if you modify the cylinder bore or increasing the stroke by changing of crankshat.👍
@EquiliMario3 жыл бұрын
@@chupachups6098 Total volume = (bore x stroke) + comb. chamber vol. So if combustion chamber volume increases, total volume increases equally
@carlcoolamon71463 жыл бұрын
... thickness of the head gasket my dude, adds to chamber volume as well as total volume.
@SJR_Media_Group3 жыл бұрын
Good save. When all else fails, check the math several times... Proper Head Prep is really important. Not just in short term, but long term also. Some people think it's a waste of time, but there are lots of reasons to do it right from the start. Ever have to yank the heads off to correct a problem that should have been done before bolting everything together... oops. Always amazes me that some people don't have the time to do these steps first, but have the time later to remove heads and do it anyway.
@Pappaoh3 жыл бұрын
I always found this debate interesting. I think it's useful to think in terms of swept volume and to keep in mind that static and dynamic compression ratios vary throughout the rpm range and are different and same based on the volumetric efficiency of your combo at any given rpm. Great vid as usual.
@matel99853 жыл бұрын
bro this is hands down THE best car channel on youtube
@UNLOCKCONNECTIONS3 жыл бұрын
Facts!!!!
@bigcazza52603 жыл бұрын
d4a is a more entertaining and not slow version of james may
@sicstar3 жыл бұрын
Bump!
@massimobattaglia50933 жыл бұрын
agreed. and I'm not even into cars!
@enginy.53282 жыл бұрын
trueeeee
@LightningStrike503 жыл бұрын
I purchased an '88 MR2 a few weeks ago that sat for a few years with a broken timing belt. Brought it back to life, now starting to work through the kinks that it has due to its age. Your videos are a godsend, and an inspiration for what I hope to do with mine in the future. Thanks!
@JettaSt0ned3 жыл бұрын
Wicked stuff! Was wire tucking my g5 cleaning it all up and now might go and equalize the head 😂😂
@LikeZO3 жыл бұрын
I would add to get the rough chamber work as close as possible between each chamber. Then get the cylinder head resurfaced before finishing the chambers and getting everything dialed in and equal. The removal of material from the head gasket surface on the cylinder head will reduce the volume in the chambers, so it's good to do it prior to the finished work.
@syedhuzaifahassan45882 жыл бұрын
For future reference, if anyone wants engine displacement tool. It’s actually a burette, your nearest high school might tell you where they buy it from. Should be inexpensive no more than 20-30 bucks. Glad I paid attention during chemistry lectures 😂😂😂😂
@blkdna7483 жыл бұрын
Really like the content helps a lot. Thnaks
@gregc15203 жыл бұрын
How can you accurately measure chamber volume, with all the old gasket material still stuck on parts of the cylinder head?
@celiturbo3 жыл бұрын
You cant, but you cant reduce an engines tendency for pre ignition by grinding away the quench zones that were engineered in to do specifically just that either. Shrouded valves... Toyota didnt put that material there to hurt engine performance.
@JxH3 жыл бұрын
Re: the large syringe at 34 cc initial fill. There are cheap digital scales easily available that can measure mass down to 0.01g (or even 0.001g). So it would be easy to use a scale to ensure that the 34 cc syringe initial fill is consistently identical across the four chambers. The point here is consistency, not anything directly related to accuracy (except the improved consistency). Cheers.
@deusexaethera3 жыл бұрын
A slight improvement on his approach, but not quite perfect. Follow all the steps up to filling the chambers with water. At that point, fill the large syringe with REFRIGERATED DISTILLED water and weigh it with a gram scale. Fill one chamber with water and then weigh the syringe again. The weight difference in grams is equal to the volume of the chamber in cubic centimeters. (well...technically 1cc of distilled water weighs 0.9982g, but that difference is too tiny to matter.) Refill the syringe, re-weigh it on the gram scale, fill the next chamber, and calculate the weight difference again. Repeat for all chambers.
@drajo1233 жыл бұрын
smal digital cheap scales are wery dificult to use acuratly and consistently.
@heinzhaupthaar55902 жыл бұрын
@@drajo123 No, they aren't. Where exactly do you have problems? Maybe I can help you out. I routinely make perfectly repeatable measurements down to +/- 5mg, +/- 2mg if I take the time, that's the limit of the scale I'm using. And as stated, they're repeatable even after weeks. Having things more than accurate enough for measuring out your combustion chambers to 0.1cc in a rather short timeframe shouldn't be a problem at all. I'm too lazy to calculate it rn, but I think even rather substantial temperature swings won't cause enough difference in density to actually matter much.
@amicloud_yt2 жыл бұрын
@@drajo123 bruh if i can use a mg scale drugged out of my mind to measure mg scale stuff then idk what to say about ur scales but maybe get better ones
@johncunningham48202 жыл бұрын
@@deusexaethera . It is my recollection , that the Metric Weights and Volumes are thus . One Cubic Centimetre of pure water , at 4 degrees C , the highest density point , is the DEFINITION of One Gram . 1.00000g Ergo , One Litre = One Kilogram and 1000 Litres = One Metric Tonne . The Scale definitions based off the Standard Metre .
@chewykarma3 жыл бұрын
Always fun to discover a golden nugget like this channel. Your ingenuity and patience are truly impressive. Your explanations, clear and concise. Thank you.
@SamichHunter3 жыл бұрын
I enjoy your videos a lot. Over the past year or so you have enlightened me about a lot of things involving engines and the engineering behind them. At my age I am past doing this myself but when I was younger I would have killed for these types of videos. And we, your viewers, really appreciate all the time it takes to record these wonderful videos, so please keep up the good work and again thank you! Be safe and stay well.
@DaftFader3 жыл бұрын
I've never heard about equalizing combustion chamber volumes! I just assumed they were precision made and would already be equalized. Good to know it's something worth checking on second hand engines you are building. TY!
@SJR_Media_Group3 жыл бұрын
All cast pieces; blocks, heads, intake manifolds, etc. are mass produced using sand molds. There is lots of variation between parts. You probably can custom order heads and blocks already prepped to your specifications. If not, some good old fashion elbow grease, knowledge gained from reputable web sites, and time can result in higher performance, better fuel economy, and a feeling of satisfaction.
@deusexaethera3 жыл бұрын
In a stock engine it's close enough, but a modified engine is by definition not a stock engine. The modifications are what cause the problems in the first place, so more modifications are needed to fix the problems.
@DaftFader3 жыл бұрын
@@SJR_Media_Group does small varyations i chaimber shape not matter, as long as volyme is the same?
@SJR_Media_Group3 жыл бұрын
@@DaftFader it's almost impossible to get exact shapes of the combustion chambers , but today with special CNC (Computer numerical control), they can get really close. Old timers spent hours, even days to match combustion chambers, intake and exhaust ports. I would have taken mine to a speed shop and let them do it.
@reallifeengineer72142 жыл бұрын
@@DaftFader The approach (working assumption) is basically: those small variations in combustion chamber shape is too small and can be ignored. Think in terms of “signal over noise”. Whatever variations, if the “signal difference” between those variations is smaller than the “environmental noise”, then those tiny variations don’t matter.
@dominik2309003 жыл бұрын
You just could’ve bought a titration Burette, they are way cheaper than the Kits from the US and More precise
@timgriffiths25053 жыл бұрын
Around 10 quid for a 150ml and 9 quid for the stand.
@brendanjones33953 жыл бұрын
What is a titration Burette ?
@dominik2309003 жыл бұрын
@@brendanjones3395 A Burette that is used for titration. It’s laboratory equipment which is used to dose a certain liquid (mostly acidic or Bases)
@brendanjones33953 жыл бұрын
Thank you for the explanation I never heard of this tool I will research more into it.
@franciscodieguez51873 жыл бұрын
The thing I love the most about this channel is the topics it covers. You just don't think these as something you would do to your car, but after the video it's like a "totally obvious" thing to do. Plus, it goes beyond the typical bolt-on turbo, catalog cams and such. One of the best channels about cars, if not the best.
@deusexaethera3 жыл бұрын
ALTERNATE APPROACH THAT IS LESS FUSSY: Follow all the steps up to filling the chambers with water. At that point, fill the large syringe with REFRIGERATED DISTILLED water and weigh it with a gram scale. Fill one chamber with water and then weigh the syringe again. The weight difference in grams is equal to the volume of the chamber in cubic centimeters. (well...technically 1cc of distilled water weighs 0.9982g, but that difference is too tiny to matter.) Refill the syringe, re-weigh it on the gram scale, fill the next chamber, and calculate the weight difference again. Repeat for all chambers.
@davidelliott5843 Жыл бұрын
Weight measurement is far more accurate than volume measurement.
@unnientertainment71483 жыл бұрын
why all of yourvideos when uploaded get few views but after some days itwill be above 100 k
@d4a3 жыл бұрын
It's not always. It depends on the video. Some topics are more interesting to a wider audience, others are not.
@xhf8yxhf8y93 жыл бұрын
I really like your videos... so thorough... However, in this one, why did you not deck/clean the head surface first?? So you had a truly flat surface for the plexiglass to sit on when taking the measurements.
@d4a3 жыл бұрын
Yes, that would be the typical approach, but when you're grinding the bit can sometimes skip and you can accidentally gouge the deck. The old gasket material remains are incredibly thin but are a great layer of protection and I feel more comfortable with them because I'm a bit clumsy sometimes. Petroleum jelly will seal even against dirt and debris and the difference in chamber volume after decking will likely be minimal.
@andrewmartin88163 жыл бұрын
@@d4a sorry need to disagree with this , yes i wouldn't deck the head but you really do need to scrap all the gasket material off. you can see a big clump of gasket which could be 1mm which would make a difference. also we use a thicker bit of perspex so to not have any sag. P.s, great videos
@slightlyinsaneraf3 жыл бұрын
This will likely come down to "how well I want it done", if you want absolute accuracy, you can resurface the head, but like it's said in video, this is enthusiast home build, you ideally wanna save some money, especially with the grinder that hes using
@daggepopnit3 жыл бұрын
A god and fast way to clean the head for this kind of work is a fresh knife honing stone and wd40. if its a cast deck you use atf instead of wd40.
@davidparker96763 жыл бұрын
There is so much wrong with this video it is comedy for anyone who knows what they are doing.
@maxxod12 жыл бұрын
You definitely covered the basics nicely. Not too many people even think about cylinder heads other than how much they can flow. The one suggestion I have is that you can use the Vaseline after the valves are in and fill the largest volume combustion chamber with body filler ( or something else like it ) then you will have a template for the other chambers. I usually use differential gear marking paste on the template to see what needs work and where.
@spaight7113 жыл бұрын
Pro Tip From a Medical Professional: Use the smallest syringe you can. Volume and precision vary inversely with syringes. If you want a super accurate number, use a 1cc syringe 36 times…. I personally wouldn’t trust a 30cc syringe to be precise within less than 2ml.
@Sylvan_dB3 жыл бұрын
Of course you have the same bore and stroke in each cylinder... Back when my cousin was working his way through an automotive tech school he bought as a project a 1962 car from my father. It had a straight six chevy 261 (like the truck motor, but canadian so it had hydraulic lifters) which ran, but was burning oil almost as fast as it streamed out past the rear main seal. Being a student with limited means, he ended up rebuilding that straight six with new rings for all six cylinders, three original pistons, but one cylinder needed bored 0.040 over and two were okay with 0.020 over and those three needed new pistons. Obviously not built for performance, but it ran great with the expected straight-six smoothness. That car became a daily driver for a few years plus we put thousands of miles with multiple 1000+ mile road trips driving at high speeds while burning multiple tanks of fuel to reach our destination. We'd leave after school on Friday needing to be back on Monday or Tuesday at the latest.
@Thelemorf3 жыл бұрын
You should use some other liquid than water, due to the high surface tension of water.
@alanlee80183 жыл бұрын
The only time I ever did this my supervisor (engine builder expert) got me to use kerosene.
@yellowbird86903 жыл бұрын
I might have another way; Use plasticine. Push enough in, to completely fill each camber, using a rolling pin to get it level with the face. Next, get a glass and a tray. Put the glass on the tray. Fill the glass with water right up to the rim. Pull the plasticine out of the chamber. Roll it into a ball and slowly put it into the water. Because of displacement, the water will run out, onto the tray. Measure the water in the tray to get your volume.
@Bialy_13 жыл бұрын
So if you want to usethe plasticine then why not just measure its mass with some cheap jewellery weighing scale?
@VaSKovach3 жыл бұрын
Omg its smart. I like the productivity and open mind thinking no one would of thought about that
@DL101ca3 жыл бұрын
@@Bialy_1 maybe while compressing it with a roller, you could end up with parts that have higher density and therefore higher weight while still having equal volume.
@deusexaethera3 жыл бұрын
Plasticine can't get into the hollow space inside the sparkplug. (yes, that tiny little bit does matter.) Here is the best approach: Follow all the steps up to filling the chambers with water. At that point, fill the large syringe with REFRIGERATED DISTILLED water and weigh it with a gram scale. Fill one chamber with water and then weigh the syringe again. The weight difference in grams is equal to the volume of the chamber in cubic centimeters. (well...technically 1cc of distilled water weighs 0.9982g, but that difference is too tiny to matter.) Refill the syringe, re-weigh it on the gram scale, fill the next chamber, and subtract the weight difference again. Repeat for all chambers.
@glennchartrand54113 жыл бұрын
@@deusexaethera Use a 14mm bolt instead of spark plugs. And petrobond casting sand. You could weigh the sand , and since it forms a perfect impression , you could take the one from #1 cylinder and set it in #3 to see where they differed. That way you can match volume , shape and valve seating.
@SamBrickell3 жыл бұрын
I don't even change my own oil, yet I watch these videos.
@RamPenndragon3 жыл бұрын
Nice job on the head but what about piston compression height variances? A 1000th inch (0.025 mm aprox.) difference in piston compression height in an 80 mm bore (common for I4 engines) is 0.125 cc. The same would be true for connecting rod center to center distance variability and crank throw variability. If you truely want equal compression ratio across all cylinders you may actually want slightly different combustion chamber volumes to account for these other variances in your engine parts.
@joels76053 жыл бұрын
Absolutely, 100% agree. Piston casting variations, head gasket, connecting rod, crank and crankshaft bore. And probably other stuff. The only way to get a true number is with the engine assembled. All of those errors are going to stack.
@RamPenndragon3 жыл бұрын
@@joels7605 Thx, problem is while you can kinda get piston compression height measurements the crank and rod measurements are extremely hard to get without very specialized equipment.
@markmetzger54303 жыл бұрын
Amazing DIY video, thank you for taking the time for making this tutorial. I had no idea that such small changes in cylinder head volume made such a great difference in compression ratio. Please continue with this series on your engine build :))
@enso31403 жыл бұрын
Amazing video as always but i would like to point out a couple things were missing 1- for diyers you could easily buy a burette sold on chemical supply stores for a fraction of professional kits 2- if you plan on getting your head decked do this before trying to equalize you combustion chamber volumes 3- generally is better to use a single piece of thicker glass with a hole could be bought cheaply at a glass store and make it a little more accurate
@ptilrem3 жыл бұрын
You better be upgrading the suspension and swaybars to handle all that mad power that car gets. Or did you unbox parts for that in your last video? I'm gonna go watch that now…
@d4a3 жыл бұрын
I didn't. Suspension is koni yellows and eibachs, but brakes will likely need upgrading. I won't be entering mad power realms, 200-300hp is where I'll be dwelling.
@stevejcoop3 жыл бұрын
Just a question. Would you not get the head skimmed before doing the compression ratio/equalisation proses?
@skylinefever3 жыл бұрын
Some people won't do it because if they slip up, they might ruin the machine work, and have to do it again. This is especially bad news if you engine has a very short piston to valve clearance, or the manual does not allow much to be milled off the head. Still, to get the best results, milling the head first is best.
@oinka7203 жыл бұрын
My wife looked at me funny when I told her I was going into the garage to put vaseline on my head and measure how much water could fit inside then rub it til it was smooth. I should tell her to watch this video.
@mikeygroves99213 жыл бұрын
I'll never do this because I have no patience but your determination and passion shines through so this was good to watch and I hope you achieve your car dreams.
@skylinefever3 жыл бұрын
If you have enough money, you can pay someone to do this stuff. Some shops can even use a CNC machine for the best accuracy possible.
@jimmyofthesea18833 жыл бұрын
Nice video, but burets are about $20 (USD) or less almost world wide and a LOT more accurate.
@Sup_Evox3 жыл бұрын
I think ima do this with my 4b11t cuz the same cylinder keeps throwing rods on me I’ve changed everything but I never ported the head I wanna test this
@Meekmillan3 жыл бұрын
Who in their right mind disliked this ??? You must have a competing channel lol
@ubewood4992 жыл бұрын
My 1st car is using the 4AFE engine. Super reliable and durable!!!
@The5hit3 жыл бұрын
great video! Can't wait for more videos as this engine comes together.
@jdmking47763 жыл бұрын
I know these videos don't always get as many views and such but, I'm so glad you make them. They are some of my favorite videos on your channel.
@jamppa46933 жыл бұрын
I'm building a bmw m20b25 stroker engine, your videos have been a great benefit to me, thank you
@wackydriver3 жыл бұрын
e30?
@jamppa46933 жыл бұрын
@@wackydriver yep
@802Garage3 жыл бұрын
Awesome video as always! I'm always surprised I don't see a lot of people do this with their builds. I guess they assume whoever refreshes their heads does it, but I'm betting that's a faulty assumption. Others probably don't know they should do it. I supposed in a completely unmodified head other than being resurfaced you shouldn't need to, but still, I'd wanna know. I like the syringe idea over the burette! Feels like it would give more control. My excitement over this engine keeps building!
@slohachi64333 жыл бұрын
The syringe method is pretty good. I've used it when cc'ing ACVW heads.
@gauci1113 жыл бұрын
Should of decked the head first because you’re going to get sharp edge around at the radius if you remove more than you’d like off it
@skylinefever3 жыл бұрын
That is true. However, many people won't do it because they fear they light slip and ruin the freshly machined surface. Ther are aluminum deburring tools lik this that make it nearly foolproof: www.mscdirect.com/product/details/05751003
@anthonylove66392 жыл бұрын
Love this channel! Hey btw if you decide to port and polish. Leave the intake sides semi rough like 400 grit and smoother on the exhaust ports like 800-1200 grit. Then polishing slightly but not like your combustion chambers are. Sure CNC porting is best. But unless your building a completion engine? There is no need. 👍😊
@ssllhh1003 жыл бұрын
i prefer the wax method, you melt wax and pour it in the head, cut it flush then melt each cast in a beaker, or put the wax pieces in water and measure the excess
@d4a3 жыл бұрын
I tried that once. It's a good methodology but I'm too clumsy for it. I started loosing pieces of wax here and there and had debris stick to it so I gave up 😂
@ssllhh1003 жыл бұрын
@@d4a all you had to do is to put the head in the freezer for a few hours, the wax would pop off on its own
@terraraptorgaming67813 жыл бұрын
Awesome video. It was very informative.
@dominikkozela97633 жыл бұрын
The combustion chamber volume is also affected by the shape of the top of the piston
@skylinefever3 жыл бұрын
Yes. Usually when you buy a performance piston, they tell you how many CCs the valve relief and dish subtract, or how much the dome adds. However, this test should still be performed, as not all pistons are perfect duplicates of each other.
@dragan32902 жыл бұрын
My brother rebuilt a performance 202 holden for my Torana. He did similar things to this but high compression! Interesting video. I never knew the process. But it was very quick as he had it up to get Xu1 specs. Cheers
@errolfeistl17053 жыл бұрын
Hey mate, Just a tip for next time... rather than using the scale on the syringe to measure the volume I've found it much easier to buy a precision set of scales and measure the syringe before and after you fill the chamber. Even cheap (under $30) precision scales will measure down to .01 grams which is more accurate but mostly its just easier as you don't need to try and keep track etc. Just fill the syringe, 0 the gauge, fill the chamber, remeasure the syringe and do a simple calculation. Cheers
@markleggett59133 жыл бұрын
Why didn't you have the head face machined first as machining it afterwards will change the compression ratio yet again. The resulting ratio will be higher than that which took so much effort to establish. Machining the head would also recreate sharp edges/hot spots to the outside of the chambers.... Just asking. Keep up the great work. 8-))
@georgealdrich96653 жыл бұрын
Wait, Your not in the United states and still able to hold a conversation in English and have a sough after skillset...I think the conservative news may have lied to me about the rest of the world... Just kidding. Great channel lots of good info and great presentations.
@maxcactus73 жыл бұрын
Happy D4A Sunday to all! The best educational automotive channel on the interwebs! Very impressive work on your cylinder head. I can't wait for the test drive video of your MR2!!
@crxtodd163 жыл бұрын
Nice work! You can also get 1cc medical syringes (usually used for insulin injections) to get that final fine tuning if you want. Thanks for breaking it down for us!
@maxmustermann25963 жыл бұрын
I tried to mention, that we use the burettes you showed in schools for titration and they are not that expensive. Apparently, people rename them and sell them for higher prices to car enthusiasts? It seems like the comment got deleted, maybe because it contained a link?
@garyh.80823 жыл бұрын
Just curious as to why you didn't clean the deck of the head before you demonstrated this process? No criticism, awesome video.
@skylinefever3 жыл бұрын
If you slip up while doing this, you ruin the machining of the deck and have to do it over again. This becomes an even bigger problem if your head does not allow much to be milled off, or your piston to valve clearance is extremely small.
@garyh.80823 жыл бұрын
Yes I get that, but cleaning and milling are two different things. I would think that you would like to have a completely flat surface to check the compression ratio versus having leftover head gasket material on the head. Just sayin'
@JB823743 жыл бұрын
Now that it's so shiny on the inside, you need to put some RGB lighting in there! 😆
@d4a3 жыл бұрын
😂
@deusexaethera3 жыл бұрын
The combustion itself provides the RGB lighting.
@qxr203 жыл бұрын
all the m3's i ever bought had overheated and warped the head like a rainbow, i faced the heads afterwards and it made like a point and ahalf more compression on 1 and 6 lmao
@altairtodescatto3 жыл бұрын
Will do on my 2 cylinder motorcycle, that girl is in desperate need of a rebuild, but will be my learning bench =D
@peterwill96603 жыл бұрын
You make the best videos! Great work👍
@gavinwilkes37023 жыл бұрын
Amazing bit of information great work 👏 👍 and very informative keep it coming 👍
@jameshaulenbeek59313 жыл бұрын
Wow! That's certainly a lot of work, but it's worth it for the peace of mind from a tuning stand point. I have seen other videos about dimpling the intake runners in the head. I was curious if this was something you were considering. It appears to be a lot of work for very little benefit unless it's on a very high performance race engine.
@d4a3 жыл бұрын
Dimpling can consistently be done only using a CNC. Obviously this isn't cheap but it's a very similar aerodynamic logic as the surface of a golf ball. I think there are some benefits to it but I never saw a dyno of an absolutely identical engines with and without dimples. Obviously nobody removes and rebuilds an engine just to dimple it, there's always other mods too, so it's really hard to tell what and how much dimples alone do. I've seen 1000hp and beyond with and without dimples, they were all very fast 😂
@calumward1192 Жыл бұрын
This is what I’ve been struggling with! Thank you!
@charleslowe5223 жыл бұрын
Great video. Will help in my project to build 300whp Cruze. Can you do a video on the difference between a turbo with a pressure wheel vs as volume wheel. I remember I was going to turbocharge my s10 and I was looking around for turbos from a Saab and they would ask the question if a I wanted a high pressure wheel or low pressure. I assumed the high pressure wheel just meant higher boost level. If that's all it means then I have answered my own question. But someone told me it wasn't quite that simple.
@skylinefever3 жыл бұрын
What you need to do is determine the mass of air the turbo flows and the mass of air the engine would suck in when in NA form. Then calculate boost. Also, you would need to get the right exhaust manifold with the right turbo flange. The early 900 used a Garrett T3 flange, but I don't know what others used. Pressure is determined by how you set the wastegate to open.
@Alexbrandt273 жыл бұрын
I’m super interested to see what your power and torque numbers come out to. Im running an economy Honda K series engine (k24a8) on the maxpeedingrods gt3071 and the torque is through the roof. Making about 350 whp / 300 whtq on 14 psi
@skylinefever3 жыл бұрын
That sounds like fun. What pistons and compression ratio do you have?
@bobsponge66093 жыл бұрын
Awesome video. It is extremely well explained as always. You should have at least 1M subscribers. Thank you for the video.
@jonathanhurdthe Жыл бұрын
Beautiful end result, awesome walkthrough 🙏
@astonswai7983 жыл бұрын
7 hours of measurements and cutting now that's a super weekend
@Eggsr2bcrushed3 жыл бұрын
Lapping the valves will change this measurement again...
@BalticLab3 жыл бұрын
Those special kits sold in de USA are nothing more than a normal laboratory burette and a small lab stand. Both can be bought easily and cheaply in the EU as separate items.
@MyLonewolf253 жыл бұрын
Don’t use water unless you use a water wetter because the surface tension is too high. Use alcohol and use a little dye (food coloring works very well) it makes it easier to see and has much lower surface tension for better accuracy
@lobuxracer3 жыл бұрын
I use methylated spirits. Very low surface tension.
@chadriddle35173 жыл бұрын
Damn your smart ! The idea was great 👍🏻
@screwdajuice3 жыл бұрын
wtf youtube? why can't i subscribe twice?
@jjmac603 жыл бұрын
Woder if laser scanning would work?
@archiedentone59503 жыл бұрын
You are also going to need your crank ground because very few cranks are even in piston height and travel
@skylinefever3 жыл бұрын
Yes. Also have conrods measured, they tend to change length if they had the big end resized.
@Miky95603 жыл бұрын
I own an AE111 with 4AFE and 6 speed gearbox so video about turbocharging this engine would be quite interesting to me
@bojned3 жыл бұрын
Good one, I admire your patience :)
@cipher25083 жыл бұрын
So educational
@sealcuddl3r3 жыл бұрын
From your channel's About tab- "Location: United States" _Anakin Skywalker voice_ LIAR!! :P Interesting how combustion chamber volume measurement tools are really only sold in the US. That's kind of a bummer for folks like the people on this channel. :( Edit: Great video and channel by the way! If you happen to read this, what effect do pistons with non-flat tops have on this process? Or do you find that most road car engines come with pistons uniform enough that it makes no difference?
@JimmyMakingitwork3 жыл бұрын
Now we need a way to control cylinder to cylinder temperature variations.
@CatChase9573 жыл бұрын
imagine having to do this with a v8 lol
@natelasaede82963 жыл бұрын
@ driving 4 answers . Love that you are doing it yourself & show good improvisation, thank you for sharing with us all. I always enjoy & look forward to all your uploads. I always learn something.
@Armaniche3 жыл бұрын
Thank you very much, sir
@Ianf1x3 жыл бұрын
Best to use a fuel additive to help keep carbon at Bay. On motorcycle we just whip head off reclean on singles or twin cylinders. This is for racing bikes
@123Linos1233 жыл бұрын
Long live the flat heads!!!
@SE45CX3 жыл бұрын
Great video. I think I first do a "simple" head gasket replacement. So, I wouldn't end up in such a pickle a many others at my DIY car repair shop. Who did bite of more then they could chew.
@skylinefever3 жыл бұрын
Sometimes you can buy a used head, do the work to it, then install it when you are ready. Later, you can sell your original head to someone else. Either that, or you can buy an "As-cast" rebuilt head from your local auto parts store and work that over, then turn in your existing head for the core charge. However, you only get about 30 days to return your existing head as a core. That method may actually be better, since the valves and valve seats have already been reground or replaced, and the deck has already been milled.
@Velkanis3 жыл бұрын
that moment when you realize this doesnt need to be done in a diesel engine but then remember diesel has its own bag of pains... insert backward vegeta meme
@Julesvale3 жыл бұрын
in a diesel engine it is done on the piston head (wich is the combustion chamber) you then weight the piston and measure the cc of the combustion chamber but it is most of the time useless compared to doing it on a gasoline engine
@Velkanis3 жыл бұрын
@@Julesvale exactly why i said "it doesnt need to be done" you most certainly can but why lower the so important compression needed for ignition?, well theres definitely a place i dont know of where this makes sense on a diesel...
@Julesvale3 жыл бұрын
@@Velkanis its to even out the compression ratio as said in the video even tho in the rare case of a performance built diesel engine choosing good pistons from the start is always a better idea
@lobuxracer3 жыл бұрын
Depends on how much you trust the manufacturer to get head volume, rod length, piston crown volume, stroke, and deck height accurate. These fundamental measurements are not unique to gas or diesel engines. Ideally, whether Kettering ignition or compression ignition, the mechanical elements would be correct. Unfortunately, manufacturers work to tolerance and sometimes those tolerances don't work for you, they actually work against you (see stacked tolerance problems for details) as they did for Suzuki when they produced a number of units with significantly higher compression that design would require some years back. Great for those running super high octane fuel, but horribly destructive for those who ran regular pump fuel.
@Velkanis3 жыл бұрын
@@lobuxracer well the sole idea i was running with the comment was to poke some lighthearted fun at the topic.... i had a long ass reply essentially done but decided against it. imma save it for another day...
@macthemec3 жыл бұрын
Great video, reminds me of when i did the same when i was 13 on a lawnmower engine, if anyone is considering this its a great place to start with an engine build, cause your guarunteed to make mistakes and its cheaper if you do it on a lawnmower
@canadatransistor3 жыл бұрын
the head gasket thickness and evenness as well can contribute to compression ratio discrepancies. Cool video - enjoyed it.
@truegret77783 жыл бұрын
The cost of the tool (cc volume tester), that you can use over and over and over, is relatively minor compared to what you gain. Therefore, the cost is minimal, even (especially) for the shade-tree mechanic enthusiast. In my opinion. When I had my stock '69 Camaro motor rebuilt to accept a turbo, I had the heads "cc'ed". It is worth matching ... good video.
@deusexaethera3 жыл бұрын
You have to value the performance improvement very highly -- or rebuild lots of engines to spread-out the cost -- to claim that the cost is minor compared to the performance improvement.
@TurboHappyCar3 жыл бұрын
Find yourself someone who looks at you the way *driving 4 answers* looks at a Toyota economy cylinder head. 😂😁👍
@d4a3 жыл бұрын
This is my new favourite comment
@TurboHappyCar3 жыл бұрын
@@d4a 😂 Keep up the good work bro! 👍
@indopleaser3 жыл бұрын
really cool build. doing alot of stuff i have never heard of before. and doing it yourself to show how low budgets can be optimized. and this build verifies all your technical teaching videos, as in, proof you know what your talking about. have been a viewer maybe since the beginning, so keep up the good content. good luck with your build. from MD, USA
@Naggstek3 жыл бұрын
I know you wont see the polished surface once you assemble the engine but it sure looks nice! Seeing you grinding while the head is just wobbling around on the table without some kind of expensive equipment gives me encouragement to try doing more work on my vehicles with what meagre tools I have at home.
@glensubtorq3 жыл бұрын
Wow! That's a lot of work but very rewarding. I guess you really want to look after that engine now so you don't destroy the head and have to do all that again!
@robertb34093 жыл бұрын
What a great video. You are one of the most informative car guys on you tube. I love your DIY approach.
@cheesemons3 жыл бұрын
Try getting a burette from your local chemistry supply store for maximum professional feeling.
@d4a3 жыл бұрын
I tried... They only do wholesale and will not sell to individuals, only companies. It's a weird little country.
@802Garage3 жыл бұрын
TBH I actually like the syringe idea more. If you accidentally open the burette too much it's start over time. Syringe you have a lot of control. :D
@cheesemons3 жыл бұрын
That's weird. From where I'm from, I can get a calibrated burette for 30 USD.
@cheesemons3 жыл бұрын
@@802Garage As an ex chemist, I find a syringe harder to control. Maybe the syringes I used are one of those tight ones. Always over squirt with them.
@802Garage3 жыл бұрын
@@cheesemons That's fair enough! I probably haven't used a very nice burette either. I have definitely over squeezed a few syringes. I used to do some lab testing on medical pumps. I had favorite brands and some I hated haha.
@Dom-ny9dt3 жыл бұрын
Now that I know this kinda stuff exists I wanna do it myself. I could even do the measuring very precise at work!
@КостаСтојановић-о8х3 жыл бұрын
I really like your videos, and I have a question could you maybe use a scale to measure the weight before and after and like that calculate the volume of water inside the chamber?
@AndrewShingange8 ай бұрын
I absolutely love your content, dude. It's inKREdibly informative and educational. Before saying this, I just thought to myself "Why haven't you liked and subscribed yet, then?" so now I absolutely love your content and am a subscribed subscriber who liked the video 😁👍🏾👍🏾👍🏾👍🏾
@stefanozed8684 ай бұрын
Great stuff. I've found using laboratory digital balance (0.01g) to weigh by large syringe before and after complete filling the chambers is simpler and quicker. (1gram=1cc)
@marchutchings88342 жыл бұрын
Your videos are the most informative videos on automotive engineering I have seen. Congratulations and keep them coming.
@edi75383 жыл бұрын
Loving this series but I was wondering about the Kawasaki one? What happened to it?
@d4a3 жыл бұрын
Had to sell it. Frame was bent unfortunately
@edi75383 жыл бұрын
@@d4a that's really unfortunate I'm really liking your channel and learning a lot of new thing about motors and also opening my mind on motorcycles. Thanks a lot for the work you're doing, hope to see you shine on this platform
@WeaponsEngineer3 жыл бұрын
Thank you so much D4A for all the content you put out I love all your videos. I am restoring a 1996 corolla DX with the 1.8L 7AFE. maxspeedingrods appears to have forged 7AFE rods. Will this combined with the Toyota 4AGZE 16v pistons you are using in your current project produce the same compression ratio as in your 4AFE project? Also, will you be using the 4AGE oversized valves in your build?
@transgrl2 ай бұрын
4:19 This equipment just looks like a burette used typically in chemistry and they can be picked up for very cheap anywhere, I had a quick look and they can be bought for less than 20 euros shipped. Definitely shop around before buying chemistry looking equipment sold as engine building tools as often they are the exact same thing resold with engine building in mind for a markup
@almostbutnotentirelyunreas1663 жыл бұрын
Well done, however the compression ratio is not 10.0 : 1 as shown, the calculation is incorrect. The initial '500 cc' includes the 50 cc of the combustion chamber, therefore the compression ratio ( SWEPT volume over combustion volume) is actually 450 cc / 50 cc to start with, i.e 9.0 : 1. If you add 5 cc to combustion volume, the new calculation is 450 / 55, i.e 8.2 : 1 Look up Cylinder Volume vs Swept volume vs Combustion volume....you'll see.