Awesome video. You're such an amazing combination of indepth professionalism (the whole video) and totally relatable DIY sketch ball (the vise on the intake stud) that i know I'm in the right hands 😂
@TheCarPassionChannel3 жыл бұрын
Lmaooo that's a perfect description of everything I've ever built
@acornhead503 жыл бұрын
When dad says he's just going out for cigarettes, and he comes back ❤️
@FlintSky13133 жыл бұрын
greatest comment of all time lmao
@JungleMotorSports3 жыл бұрын
be mindful when shopping for head gaskets of "compressed thickness" (aka thickness when it is bolted down) vs. uncompressed (aka out of the box). Cometic does offer several thickness options, and will custom make one.
@NappMotorsports3 жыл бұрын
Nerded out watching this, but now I'm not looking forward to doing all this on my own in the near future... I really appreciate the immense detail you go through when you make these videos, I feel like I could send someone who has never touched an engine to your channel and they could build one from the ground up.
@miatafied3 жыл бұрын
Thats literally what I did (accept I had done some vehicle mods before and general maintenance) I saved thousands of $ by watching this channel and learned a ton. Always learning more too. Glad to see Greg is back
@Gios_JDM_garage3 жыл бұрын
I’ve read all 59 comments and only one person mentioned the Vsauce intro. Absolutely genius Freg. Keep it up. Shit had me hollering laughing😂😂😂
@sylvaintexier86092 жыл бұрын
Never ever watched a video as packed of crystal clear info as this one: "can your engine handle big cams or a shaved head"
@Rumnhammer3 жыл бұрын
Love that "crack" bit at the end!!! Been there with that before, usually after something is all put back together though never usually when the part is just sitting there, I run just as fast though and would have lost sleep till I could confirm it was "just" a hair.
@christianzinn76363 жыл бұрын
WOW!!! Your math capability blows me away!!! Thank You so much for all your work you put into this video!!! Best Always,
@kennywatch38213 жыл бұрын
I love my wife, but there’s something about Greg’s automotive passion that touches me deep. You’re my people, please play me our song!
@mattkrazit64143 жыл бұрын
Sheds much light on why I had valve-piston contact on the BP6D I built 2 yrs ago. .060" head shave, 10mm cams, +1 OS valves, stock 10:1 bottom end except rods and bearings. Engine lasted 200 miles before #4 piston exploded. Accidentally enabled VVT w/o reducing max lift. :doh: Ended up K swapping after that. Stellar content here, Greg. 👍
@edekmito3 жыл бұрын
Best video you've done. I've just built vvt engine for itbs and it's nice to see someone else go in-depth. Just remember to calculate head gasket volume as your using a thicker gasket. As you might need to skim the head more then 40thou to get the same gain in compression due to the thicker gasket.
@elwindewitte3 жыл бұрын
Oooh sweet! How has the build been? Still heavily considering going with a turbo or n/a with itb somewhere down the line.
@Nasonix23 жыл бұрын
I wonder if ARP Head bolts have higher torque values too than factory. It might crunch the head gasket a hair further than stock maybe . Maybe not. Is there a way to measure the head gasket size when it's fully torqued down? My thinking is maybe the gasket manufacturer advertised the thickness at stock head stud capacity. Either way it would probably be a hair at best. Oh and did anyone catch why Greg's engine is an interference engine now? Was it because of VVT? I don't think I remember him using oversized valves. Maybe he did, idk
@federicoloffredi24673 жыл бұрын
Nice job! Loved it, Jafro takes all of us at school!! I have had problems with the squish area, I went for 0.27inch I destroyed the head making cracks all around the 2 flat faces. Taking off 1 mm I raised the b660 head c/r over 10.7. with 100octane fuel it has begun to detonate continiously. Then I reopened up. Keep on calculating and measuring that's all in those little details that makes the difference.
@Stranio343 жыл бұрын
I'm really glad to see hp academy wants to sponsor you. Even better is that I know from an old video you really also stand behind what they do/teach. Good for your that you got that sponsor deal \m/
@TheCarPassionChannel3 жыл бұрын
Their channel is an absolute wealth of motorsports information, I learn no less than 10 new things every time I watch Andrei interview the owner of some record setting drag or time attack car. Can never learn to much!
@braydoncoate3 жыл бұрын
jafro is THE most underrated youtuber PERIOD. i love seeing him get shoutouts
@TopherHatch3 жыл бұрын
Been watching you and Jafromobile for years now. So Pumped you tagged him and love the in depth videos. We love miata content!!
@SuperAffe973 жыл бұрын
Finally some new content, I'm so glad you are back
@WhyIsThatMyHandle3 жыл бұрын
Omg I felt that at 28:46 lol, I'll be modifying my valvetrain sooner or later, this video might come in handy in a year or two, thank you for that
@mtbiata3 жыл бұрын
Finally, I can vibe to your intro again! Welcome back Greg :)
@jakubtrzpis25953 жыл бұрын
the end was great, you raised this head like she was light like a feather
@shifty35833 жыл бұрын
Excellent breakdown! On my NC, I measured actual clearance with the VVT at maximum advance by modifying a spare gear to remove the locking mechanism. Then I used a combination of feeler gauges and small sockets to hold the thing at maximum advance while claying the engine. By the way the "side" clearance measurement has a name, and that is "radial clearance", and it's usually safe to be slightly tighter than the other measurement. Usually. :D
@Belgarion1153 жыл бұрын
Dude, this video is DYNAMITE. Please, continue.
@philjones57283 жыл бұрын
Greg, I have already learned so much from your videos, and you start the new season with this gem! So much info, humour and top entertainment ...... just like old times - but camera shots and editing are at the next level.
@madmiata18873 жыл бұрын
Awesome video! Can't wait to see what you do. Fab9 uses Delta Cams for cold weld/grind. My 264/264 are holding up great after 2 seasons of track/street abuse.
@dav69133 жыл бұрын
Video required about squish factor and flame front propergation due to compression changes with head gasket thickness and head skim. And the effects it causes ie burned vales and premature head gasket failer
@UnsponsoredBuilds3 жыл бұрын
So glad to see a new video from you bro! Your videos have been a big help for my nb2 cold side supercharger build! 2 months of hard work later and I am off to the dyno next week!
@kinglouiesshed89953 жыл бұрын
3 small blobs of superglue will hold the degree wheel for purpose but will also break off quite easy once finished 👍🏼
@TheCarPassionChannel3 жыл бұрын
Now that's my kind of ingenuity
@kinglouiesshed89953 жыл бұрын
@@TheCarPassionChannel Little things can make a big difference 😂
@danielpayne37083 жыл бұрын
Maybe check valve to valve clearance as well. My +1 intake and +2 exhaust hit each other if the timing belt breaks. A head shave won't impact v-v clearance, but if you're going to bigger valves it becomes important
@TheCarPassionChannel3 жыл бұрын
Right - and v-v clearance changes with larger cams too. There's only so much room to work with in that little chamber!
@TheAdatto3 жыл бұрын
I once set vvt advance to 60o for all rpm for the fun. It ran like a v8 at idle.
@TheCarPassionChannel3 жыл бұрын
I have a whole video about that, titled the Ghost Cam Tune 😅
@TheCarPassionChannel3 жыл бұрын
I have a whole video about that, titled the Ghost Cam Tune 😅
@Zesserie3 жыл бұрын
Does 9.0:1 to 10.0:1 compression work well with octane rating in mind? That extra amount of compression requires quite a bit more octane to prevent it from knocking. that is if you run on regular pump gas and the same amount of fuel as before. A friend of mine warped his head in a water pump failure and shaved it about 1.5mm(volvo b230f eninge, it was warped pretty bad) It needed a bit more fuel pressure since the narrow band started to complain about it goin lean sometimes
@caulkhead55613 жыл бұрын
1.5mm is a fair chunk lots of great info in here thanks!
@muaddib26783 жыл бұрын
Your ability to present complex custom modifications that are not only understandably but also very entertaining is total awesome... completely agree with Daniel O Please! keep them coming Miata Dad we love ya! Miata owner for life :)
@Manuqtix.Manuqtix3 жыл бұрын
I really don’t know why I haven’t subscribed to your channel. This information is really really useful.
@z_855turboR3 жыл бұрын
Man all that measuring..no wonder he was away for months:) Very nice, you can never be too sure, no skipping when squeezing more horsepower
@colinleder56833 жыл бұрын
Exactly the video I needed, planning my N/A build ✨
@TheRobphobos3 жыл бұрын
Great video, and info. I did my VQ35DE C8 cams/high comp following Jafro and HP Academy and this vid would have been really useful too! 👍🍻
@nickchilds31043 жыл бұрын
Amazing video. I haven't owned a Miata in almost 9 months but I'm still here learning.
@robd41632 жыл бұрын
One of your best videos so far. Love the discussion on the head work and what you can get away with. Curious to see if you ever go oversize valves or if a 3 or 5 angle job would give you a HP lift on the new build. Keep killing it. Definitely buying you some E85! Cheers from Canada.
@nicholasfabulous3 жыл бұрын
Jafro and car passion can’t ask for much better
@stuartrochon99993 жыл бұрын
Glad to see you back, hope you got some rest, we missed you!
@jimmy2002ful3 жыл бұрын
Yes HPA has some cool stuff, love your vids mate, 🔥
@na6runner7543 жыл бұрын
Great video Greg meanwhile I’m over here with a na1.8 block with vvt rods and pistons and 40 thousands off a bp4w head I’m probably super interference as well
@BigIsleJ3 жыл бұрын
Glad you’re back!
@chadl.9813 жыл бұрын
Dude this is the most informative video you have ever put out. Well done sir!
@LocoRocoNL3 жыл бұрын
Good to have you back man, super indepth video, love the passion you have!
@flipflop75773 жыл бұрын
Hey Greg, a lot of ppl here in Germany say that Miata engines start drinking oil after the head was lifted, because the cylinders are not round anymore. The block starts to deform a little wich is causing a bigger pistonring to cylinderwall gap wich results an oil consumption increase...? Have you ever heared 'baut that? Or experienced that sort of prob?
@GapMiata3 жыл бұрын
Yesss good seeing some vids back again!
@cameronyoung20043 жыл бұрын
Congratulations. This is quite professional. Good job. Keep going. I like what you did with this episode.
@skatedeath21863 жыл бұрын
You should do a video about a stock intake with stock tb Dyno run. VS a ported intake and ported TB run. And see what the gains would be. 🤔
@adriangriffiths58013 жыл бұрын
Hey Greg, why dont you get a depth micrometer to measure piston to deck height, much easier than a straight edge and feeler gauges.
@oomii973 жыл бұрын
I'm always so hyped when kreg posts a new video
@Cintas19893 жыл бұрын
Amazing explanation while keeping it understandable! Fine job sir! Big chop Miata math!
@fifielcoolio2 жыл бұрын
Would be great if you did a vid explaining all the steps you went through when installing the BP 1.8 vvt into the NA. I have a 92 1.6 and looking to do this swap. Thanks for all your amazing vids!
@TheCarPassionChannel2 жыл бұрын
I have a decent amount of coverage on this in my rebirth series, also if you Google "90-97 VVT swap" you'll get a thread from Miataturbo that covers everything in detail
@Asomesauc3 жыл бұрын
Great video really enjoyed the extreme detail involved
@jannevot85153 жыл бұрын
YESSSSS I don't give a shit if I'm working tomorrow, I gotta watch this entirely !
@akautomotive2063 Жыл бұрын
Shaving material off the head does not compensate for the thicker gasket. Yes the compresion ratio will be restored but the quench/squish whatever you want to call it is changed. The distance form the piston to the head at TDC is increased. The material must be taken from the deck surface. Not the head.
@k0b1283 жыл бұрын
Where have you been man?! I need you so I can motivate myself to get my 91' off the stands lol Also, 0:54 had me dying, one of my favorite creators parodying another of my favorites.
@anthonygonzales63793 жыл бұрын
great video ! really wish it was out before my machine shop took too much off my block , and i didnt do any deck height check , ran the wrong sized head gasket and my pistons smacked the head :/ but great video !!!
@FierceMotorworks3 жыл бұрын
Fascinating information. Very in depth explanation as always. The MSpaint visuals helped a lot too. Seems like a ton of work just to make sure your valves don't hit the piston though
@TheCarPassionChannel3 жыл бұрын
The alternative - is guessing how much I can shave the head, and just letting the valves hit the pistons, and needing to build a whole new motor 🙂 now that would be a lot of work!
@FierceMotorworks3 жыл бұрын
@@TheCarPassionChannel Wouldn't it only hit if the timing belt broke and the valves came down at the wrong time?
@TheCarPassionChannel3 жыл бұрын
@@FierceMotorworks If I shave the head too much or install cams that have too much lift, the valves could contact as soon as I turn the key for the first time, immediately bending everything in the head.
@FierceMotorworks3 жыл бұрын
@@TheCarPassionChannel Do you have to shave the head and increase compression to get more power? Why not leave it the stock height and add power a different way?
@TheCarPassionChannel3 жыл бұрын
@@FierceMotorworks Yeah just trying to squeeze out a little bit more. I'm pretty much out of options in other areas unless I want to compromise something. I'm on E85, and the turbo is maxed out. I needed to remove the head anyways, so I figured why not!
@ginomu3 жыл бұрын
Yeaaah Jafro is such a meticulous guy on this subject!
@lander9173 жыл бұрын
Thanks for the leg work. Love this
@travdripdrip3823 жыл бұрын
I knew it was bout to get real when he busted out wit a bench vice clamped to an intake stud.
@GotMilkRS133 жыл бұрын
Great video as always Greg!
@briceburbank3 жыл бұрын
So glad your back
@anthonywendt58343 жыл бұрын
A lot of great info in your vid man. thanks
@curlyoakley3 жыл бұрын
Thanks man for another sick video !
@jp22463 жыл бұрын
Terrific content, and yes jafro has done some great videos
@wesulius3 жыл бұрын
In the case of a hydraulic lifter, keep in mind also the lifters depression when there is no oil pressure. It is up to 3mm.
@TheCarPassionChannel3 жыл бұрын
Yep, see 4:48 🙂
@wesulius3 жыл бұрын
@@TheCarPassionChannel Jep
@northernalteration8576 Жыл бұрын
We need more videos! Have you thought about doing a Supercharger build?
@trevorwray3 жыл бұрын
Needed this vid! Thank you
@Nasonix23 жыл бұрын
I wonder if ARP Head bolts have higher torque values too than factory. It might crunch the head gasket a hair further than stock maybe . Maybe not. Is there a way to measure the head gasket size when it's fully torqued down? My thinking is maybe the gasket manufacturer advertised the thickness at stock head stud capacity. Either way it would probably be a hair at best. Oh and did anyone catch why Greg's engine is an interference engine now? Was it because of VVT? I don't think I remember him using oversized valves. Maybe he did, idk I'm really curious because I'm planning on head work in the future and I've snapped a timing belt before. So they do snap. It was when my mechanical timing was wrong though. Only lasted like 7k miles
@TheCarPassionChannel3 жыл бұрын
It's most likely due to the aftermarket pistons. And yes I believe the stock head bolts are 43lb-ft, I torque my head to 77lb-ft. The gasket compression difference would be negligible, and you shouldn't be cutting it that close with your clearances anyways.
@11dmills3 жыл бұрын
Dumb question but couldn't shaving the head on a boosted engine create deck thickness issues and cause you to deform the head and lose the head gasket? I'm not super into Miata stuff so I don't know what the factory head deck thickness is but in the foxbody community guys go with cheap ebay heads on their boosted engines all the time and go through head gaskets like candy because of thin deck surfaces.
@Friendsofdonr Жыл бұрын
Did you ever find/map out your Intake and exhaust Open and close degrees? Additionally I miss Lumberjack Creigh! Is that where they came up with Tree from?
@mansonitefirefox3 жыл бұрын
Doesn't your "where is the engine an interference engine" based on pistons that don't have a valve relief?
@Asomesauc3 жыл бұрын
The ending was great 👍🏻
@hittman85923 жыл бұрын
Woohoo! "Winter" season has begun!
@miatafan3 жыл бұрын
Great video, more Miata people need to watch Jafro. Speaking of things that would need to be remeasured, wouldn't your valve seats need machining if you had damaged valves? Seems annoying to have it be an interference engine now, Would a different manufactures pistons solve the "issue"? and have measurements for Squish been considered with changing the dimensions on nearly every part associated with it?
@TheCarPassionChannel3 жыл бұрын
The valves are softer than the seats, they appear to be okay. Next Monday's video will verify that. It doesn't matter to me that it's interference, plenty of OEM engines are interference, just don't slack on timing belt intervals!
@bmxbarn153 жыл бұрын
on my mk1 1.8 i’ve had my head skimmed 100thou and have Piper BP285 cams and have had no issues for valve to piston clearances. pistons and everything else is bone stock
@TheCarPassionChannel3 жыл бұрын
You're only the second person I've heard of shaving 0.100", any media online where I can get more info about the build? Have you had it on a dyno? GQM Garage has a 0.100" shave with 264's and has had piston to valve contact issues, maybe he's running different cam timing from you.
@bmxbarn153 жыл бұрын
@@TheCarPassionChannel No unfortunately i’ve not had it on a dyno i’ve just street driven it and adjusted the map myself (i have ME442). As for cam timing, with the 100thou skim, you align all the stock marks up then you’re left with one extra belt slack on the tensioner side. To sort the slack because the standard tensioner doesn’t have enough movement, i used a VAG 1.9tdi timing belt idler pulley bolted on one of the oil pump bolts. There isn’t much room between the idler and standard mx5 crank pulley but it works fine and i’ve not had a problem. I also don’t have a knock sensor and only run 99 octane fuel (i’m from the UK) and i experienced some pinking when i had stock cams and i messed with the map too much but since putting the 285 cams in i never got any pinking.
@TheCarPassionChannel3 жыл бұрын
@@bmxbarn15 Do you know what the max lift is on those cams?
@bmxbarn153 жыл бұрын
@@TheCarPassionChannel On the Piper cams website they state 9.2mm. p.s still running hydro lifters
@blattwald76508 ай бұрын
Dude, you're awesome!
@brandonsever25763 жыл бұрын
Doing this very soon on a 6.0 LS, but hopefully I'll learn something here lol Edit: I learned that I'm extremely thankful to not have a VVT cam because of this
@olilarsen-wright54043 жыл бұрын
Amazing info! Thank you!
@mm84363 жыл бұрын
My man is back!
@constant3333 жыл бұрын
Damn , most info i have ever found on thiss , thank you!
@constant3333 жыл бұрын
The ending lmao!
@castaway__72353 жыл бұрын
Wish this dude was my automotive teacher damn.
@dannymx94863 жыл бұрын
The vsauce opening.... So good
@ianfairbanks13183 жыл бұрын
who's Greg Peters? lol nice to see you again Greg.
@Itsjustnater3 жыл бұрын
Dad! Glad you're back. How was MatG?
@whitebear963 жыл бұрын
0.72mm of interference at zero lift seems strange, is that correct? At 0 lift the valve is tucked up in the chamber, no way would it interfere with piston even if it didnt have valve reliefs.
@TheCarPassionChannel3 жыл бұрын
It's a bit confusing, the -0.72mm number represents the valve clearance **if** the valve were to be at full lift while the piston was at top dead center, which would be possible only if the timing belt broke. Negative signifies that the valve would contact the piston, meaning that this is an interference engine.
@MrTAKIS19842 жыл бұрын
Increasing compr ratio, requires remap of the ecu or not?
@dragonbrownies5173 жыл бұрын
Hey Miata Dad! Hope you're doing well, love your videos dude!
@Von20973 жыл бұрын
Hey pal. I have a bpz3 naturally aspirated engine with stock compression and I'm wondering about 270/270 cams. Which other parts would you recommended. Best wishes from the U.K.
@LangAndrei3 жыл бұрын
Do you have the opening and closing values for intake and exhaust valves?
@bizkify3 жыл бұрын
Yeeeeees can't wait to watch this after work! He bacc bois wooo
@aleksisalenius51033 жыл бұрын
How critical is to use solid lifters instead of hydraylic ones?
@TheCarPassionChannel3 жыл бұрын
Accuracy is not possible with hydraulic lifters. Also, if the test was performed using a solid lifter but the engine is going to run with hydraulic lifters I'm not sure if there are going to be clearance differences
@rosaatomica99763 жыл бұрын
what intake valves did you decide to go with?
@chipbaish40123 жыл бұрын
Great Video!!
@Miatayo3 жыл бұрын
The Miata dad is BACK 🥳
@MrTAKIS19842 жыл бұрын
10,5:1 is it safe for a bp6 engine?? i want to tune it but without problems
@Dsalazar917K3 жыл бұрын
Great info! Haha love the Vsauce intro hahaha
@str8slayn13 жыл бұрын
Watching this while wearing my carpassion shirt 😎
@daleabono36162 жыл бұрын
at 20:00, that clearance was very interesting. So much potential room for clearance by using the notch in the piston, but alas, the notch seems to be in the wrong place. Is that a manufacturing booboo, or am I missing something? I mean, hey mazda, I love you, but why go to all that trouble for something that does no good?
@TheCarPassionChannel2 жыл бұрын
#1 the pistons are aftermarket, not Mazda OE. But the bigger factor is most likely the head shave, which changes the clearances as well