Measuring Bearing Clearance (very easy) - Tech Tip Tuesday

[@joshgoeller1]

I'm glad I found somebody that's willing to share their knowledge. I am getting ready to redo the bottom end of my Duramax and I am having trouble talking to people about how to do it because all they care about is making money on it and they want to do it themselves and not share any knowledge so I can learn.

[@davidcrandall7401]

This is way late at but how did your Duramax build go. I'm looking to do mine real soon, a little nervous, but want to tackle mine myself also

[@bkookmarkspxcial]

😮 that's because people want your money due to lack of knowledge wrather than them having the heart to spread knowledge. To be honest your doing the best you can be learning yourself, as I'm learning clearance for a fox body rebuild to drop in my 3.8 mustang for a 5.0 swap. I'm doing a big cam, porting some bigger explorer heads and porting the intake as well along with exhaust ports, and replacing all pieces to spec. Wiring simple bc I'm using holly terminator x max wires and computer to control motor and trans. Just get the Haynes rebuild kit I used to rebuild my 3.8 mustang as your awesome and will go far my friend bc your making it happen

[@gregmooney4090]

your right about how hard it was to gain knowledge a few years ago i appreciate these videos

[@ls87gbody]

I love these kinds of videos, and engine building videos in general. Literally all I watch.

[@Loucfr]

Man when that micrometer was extra tight on that journal and it caused it to squeak it sent a shiver down my spine lol

[@jamesdailey2476]

I work for cat an do this a lot , most people have it over tight an scratch it 😬.

[@MikeJones-ky1cu]

was about to watch this video but when i saw this I'm backing out.

[@troybrake5686]

If you think you're scratching the crank that easy then......well idk what to tell you then, it wasn't a sharp edge, it was flat on flat and there both hardened, am I the only one thinks that was no big deal?

[@mrmo9125]

not what you do, you aneak up on it, and have to have the right feel. you can change the reading by using too much force

[@dan79transam65]

That's the only reason I came to the comments

[@bradh4078]

Humble and to the point! best vid on this subject I have seen after watching many of Wich leave out detail.

[@JacobVillemain]

Wow, thanks!

[@bhoochoo]

I absolutely love the channel and the videos, I think if you made a video going through the entire build process for an engine step by step from bare block fresh from the machine shop and breaking it up into parts would be good.

[@aidenstefanson2175]

You make it look so easy. Building my first engine, and I'm struggling to make these tools do my bidding. Time to take a break and come back with fresh eyes

[@Dmack434]

Man oh man! Thank you so much again! There's people out there who charge hundreds of dollars for classes on this and you take the time out of your day to pass this on for nothing. Thanks to you, I'm doing my own cam bearings, file fitting my own rings, and now my bearing clearances. Teacher, will you show me the correct way of taking piston to valve clearance and choosing the proper head gasket to achieve the desired clearance and how to calculate compression ratio?

[@bluef2501989]

Absolutely love where your goin with the channel! Get stoked when i get a alert that you have posted a new video. Time to get learned 😁

[@JacobVillemain]

Awesome! Thank you!

[@creativecreative9582]

@@JacobVillemain Just tighten main bearings to spec on my first engine build I'm sure I put to much of that thick assembly lube , should I redo it and take some of the lube off those main brarings or do you think i'll be okay. I messed up by going crazy with the lube. Thank you,

[@JacobVillemain]

@ haha to much never hurt!

[@lucasornelas6113]

Thank you sir, i watched a ton of you tube videos and yours was by far the best straight and to the point.

[@vwsandvettes3253]

I'm a total poindexter when it comes to this stuff, so I appreciate you taking time to create these tech tips!

[@bobd9911]

I like how you explained it a little better if not a lot better than some of the other ones I saw on KZbin. It's been over 25 years since I mess with a dial bore gauge and Mic set. I usually throw the motors together with the bearings as they are without checking really. Unless I run into a problem where it's too tight. But with this performance build I'm doing with a LS3 and LSA supercharger I'm going to make sure everything's correct.

[@dbugman68]

Or you could use the part on the end that spins free of the other spinny bit. Thats how you properly adjust to the correct measurement without putting the micrometer under tension.

[@Desertduleler_88]

You remind me of myself when l was working in a machine shop 35 years ago. Great explanation.

[@fulltiltboogie5321]

Clear and precise!! Jacob you sure make it seem like you know what you are doing!! Great job!! I watched this video in its entirety.. do I get my certification for being a semi professional amateur engine builder with my rotating assembly now?? 25 years old and this engine builder sharing knowledge of 75 years worth!! Great job Jacob! Thank you! Keep it coming!

[@mathewshackelford8037]

I love your videos and I love your channel. Keep the videos coming! I do want to say, when determining the diameter of the journal, you should be using the rachet at the end of the knurled gripe. This is setup to slip once the correct "tightness" is determined and the measurement can be taken. Turn the rachet until it stops, lock the spindle in place and that's the most accurate way to get your measurement.

[@joelsegundo2038]

R.I.P. crank journal at 4:21 lmaooo Jokes aside this is really good informative video, thank you👍

[@bobatbilletcreations]

R.I.P journal and mic...lol.

[@MrJuvidj]

You are a great teacher, thanks for the video.

[@pablochavez9087]

I use the ratcheting mechanism on the end of the micrometer so you don't over tighten the micrometer when measuring. Also I check the micrometer with the proper standard to make sure it reads true before measuring components.

[@bulldogbrett747]

Thank You for the video .. im just starting my first build so your videos are super helpful

[@farmmachineryfan856]

If you think about it, if you're just an engine builder, the manufacturers of the parts your using do all the work for you. All your doing is making sure all the parts go together correctly.

[@josephg8818]

You'll be surprised how off alot of parts are

[@KingJT80]

@@josephg8818 exactly. a lot of people have just "thrown it together " with the right spec stuff and the engine seizes up

[@nickkiofetzis5667]

great show brother, your very informative and i am always learning from you thanks heaps cheers nick

[@daren9721]

Appreciate your time for teaching us👍🏼

[@Richiehd]

Thanks I learned something new tonight!

[@buchanansleeve7427]

take 1/2 the bearing put it on the crank get a sharpie and draw a line on the crank on both ends of the bearing then you have a great start every time to mic the center of the crank

[@dreece2000]

Thanks

[@donbrisson5710]

Really well explained and a great video to learn from thank you for helping people like me to understand the process

[@matthewkimbrell5696]

Love your stuff man! Very knowledgeable and helpful! Keep it up

[@Vonte603]

Thank you for the vid and break down.. it does simplify things

[@bigal878]

Great video, keep them coming mate 👍🏻🇦🇺

[@wickedsatan1]

Nice video.. plasti gauge method is relatively easy

[@DeleDeSouza-nm8dk]

Yow you make it look so simple I like it keep it up

[@JimDaTech]

Love Your Vids, Helps Me With Schooling Rn Big Time ! 🙏🤟 Always Something To Learn

[@drhernandez9449]

Great video like always,,,thank you for your time & knowledge of engine building,,,much appreciate d,,,cant wait for the next vid,,,

[@terryrust4973]

Thanks very much, great video!

[@TomEHawk-r4z]

Why did you use torque specs rather than checking the stretch with stretch gauge on rod bolts

[@HDVisionsMedia]

BTW, if you need a micrometer specifically for tubing or tube type materials, they make special anvils and micrometers to make it easier when trying to find the high points. A 10th mic with gently hands works fine (.0001 accuracy and calipers will be good for .001 accuracy) Mitutoyo and Brown and sharpe are 2 of the best.

[@KISSMYACE3203]

Something that misleads a lot of people. It looks good that there's a 50 millionths *resolution*, but that doesn't mean it's that accurate. My 0-1" Mitutoyo, according to the calibration sheet, reads +.00005" at 5 different measurements other than 0. Unsure on my vernier ones, .0001" resolution, but I'm sure they're anywhere in the +- .0001 throughout the measurement range. It's not much, sure, but it can be the difference between something in tolerance or out.

[@timothy187]

How do I find one of these? Tried googling and not much luck. Sounds more accurate than trying to guess the right feel of tightness

[@Kyle-yx9tz]

Thanks for the info and advice 👍

[@triggerwarning2439]

I'm now a KZbin certified mechanic, Thanks KZbin University 😂👍

[@ericwilkes238]

I've never built a engine before so I'm trying my hand at plastegua%ing a 350 crankand I notice the front main bearing didnt mash the green plastiguage can I get a new biger bearing to mash the green plastguage.for that bearing

[@irunnit9098]

Is measurements taken with new or used bearings? Thanks

[@jamesbombss5777]

great video.

[@HDVisionsMedia]

Guys, please don't do that to your micrometers. Gently find the center (highest points) on the material, then gently twist until both sides make contact and you cannot close the micrometer any further. As a machinest I appreciate you recommending micrometers, but that is not how you use them and will ruin the precision by doing that.

[@V8freaks]

After torqueing and measuring the rod bearings - can you re-use them or do they lose their pretension? I heard once that that the bearing lose their tensions and tend to spin when re-using

[@gersonrosa7308]

Nice video, simple and very helpful.

[@Mark622111]

Great video and to the point.

[@provenpowercycles]

Thank you for the video on this! I greatly appreciate the insight! With that being said, my dial bore gauge left some marks (they look like fresh metal marks) on the con rod bearing when checking it. Would this still be okay to still run these bearings even with the lines showing up on it? First time using a dial bore gauge to test bearing clearance and I want to make sure we don't jack up the bearings just checking them 😅 Thanks again for the vid!

[@thisisyourcaptainspeaking2259]

Then replace all the bolts that were just stretched to yield as per torquing to spec instructions?

[@mercedesmaintenance.6339]

Thanks for a clear explanation.

[@WickPerformance]

Do you recommend a tighter clearance for aluminum blocks vs iron?

[@tanweerahmed6861]

Hi, How accurate and reliable this test is ?

[@6xcchamber971]

I have some telescopic bore hole gauges. Would I not be able to use it and then measure it with the Micrometer? Probably better with the bore gauge I think. Thanks so much for your wealth of knowledge. B

[@diambo4life]

You are introducing more random error by using telescopic gauges.

[@ChevyConQueso]

Telescopic gauges suck for this purpose. Get a dial bore gauge, and get one that reads .0001". May as well be using plastigage with anything less. (Don't get me wrong, a zillion engines have been put together with Plastigauge, but it isn't performance precision. I have found that the stuff reads a full thousandth tighter than actual clearance while experimenting on the same short block. ex. .002" w/ PG = .0029-.0031 with my dial bore gauge.)

[@luisjulianonicorescu3744]

Tks alot !! great job !!

[@mercedesmaintenance.6339]

Thank you for your videos. Cheers 🍻

[@Slowcarfastbeans]

The rod bearing is typically not even close to round or flat across the face. What is the clearance that matters on the rod bearing? Middle (max) or outer (min)? And also where radially - perpendicular from parting line (narrower) or closer to parting line (wider)?

[@jordansmith8467]

Excellent content

[@rogerpaulll1451]

you do great videos thanks

[@wadeyaden4915]

I am curious about the rod bolts. When you replace the rod bolts, is it OK to do this testing then to remove the nuts/caps and reinstalling back into the cylinder?

[@LSAG-mn4zs]

Where can we buy these tools you have ?!

[@blakealbright9159]

Building a 403 ls stroker iron block. What clearances do you recommend? Car will be mostly street car but I will race it on the weekends!

[@DWBmotorsports]

You’re building a stroker engine. Buy a manual….

[@ChevyConQueso]

That's one way to do it, but I prefer to take multiple readings around the journals, average them, and check out of round or taper on the journal. Taking one point doesn't give you the whole picture. For a relatively loose race deal with .001" clearance per inch of journal diameter, this method works, and is better than Plastigauge. I would go further personally, and especially when going for tight clearances with thinner oils like many modern race engines.

[@roadracer663]

Is it normal that horizontal clearance is bigger than vertical clearance ? (0,002 vertical, 0,004 horizontal) Thanks

[@anthonyrochon3907]

Its an introduction video, how we suppost to know what, standard 100x bearing means?

[@harryloibl5183]

Thank you buddy

[@privatedata665]

Cool video , presented well

[@rubberbandman2540]

cheers mate love your videos

[@AllTerrainAction]

That auto focus is struggling here, but great video... we are about to attempt to install new rods and pistons into a LY7 and needed to know how to measure clearance... guess I'm out to buy some tools!

[@MichaelJenkins-q5k]

What’s the part number of the dial bore gauge you’re using?

[@dreece2000]

High dollar

[@patrickwendling6759]

Thank you 👍🏼

[@chrisliberty1773]

Great vid on precision measuring! I will be using this when teaching my Auto Shop class at Boerne Champion....fwiw we have mainly Fowler tools. Dunne says HI!

[@JacobVillemain]

Very cool!

[@robr5786]

What type of end is in the micrometer? Ball or flat?

[@JacobVillemain]

Flat

[@Airman..]

Superb Keep em coming

[@blacktopmods]

Question: I just pulled the motor from an Audi A6 3.0 V6 . I pulled it because it sounded like Rod knock, but when I broke the motor down the only bearing that looks messed up is the front most of the four (front of the car) don't know what that particular bearing is called . I mean I know it's a main bearing, but I thought maybe they had technical names for their exact location. The bearing is seized around the crank. Could that make a rod knock sound? The sound was only under load and there were no codes and I checked everything as I broke it down and can see no other problem.

[@npc_retired]

That was a pretty big gouge that you made at 4:21

[@chandlerlofton6536]

What oil clearance needs a high volume pump? I’m building a 408 LS and we are using.001 over bearings. I’m not sure if I need a high volume pump.

[@faniedupreez3391]

Great video! When measuring the connecting rod bearings, are those the actual bearings that you use in the engine when assembling? Just asking because I dont want to potentially damage a new set of bearing shells. Thanks for the info, can't wait for the next video!

[@JacobVillemain]

Yes, I always measure the actual bearings I will be using.

[@Wingman52]

So once you've torqued those rod bolts to spec, when you take them back apart you may need new ones as some of these bolts (BMW M20 engine )can only torqued once. How do you get around that?

[@dreece2000]

The rods he was using didn't have torque to yield fastners

[@markgarza1077]

Awesome vids, brother! Is your shop near SA TX?

[@JacobVillemain]

Yes!

[@touchpointpropertymanageme2889]

Thank you for this video

[@JacobVillemain]

You’re welcome!

[@welldonecj7]

Do u have a specific assembly lube u like to use?

[@JacobVillemain]

Clevite bearing guard

[@markgriffith6303]

Iv bin looking to find what my clearance should be on my motor. 6.0 LS with a turbo.

[@jtveg]

Thanks for sharing. 😉👌🏻

[@trail457]

What about Plasti gauge?

[@TheXJ12]

Since the micrometer is only used to "copy" the journal diameter and not to measure it, can't a quality caliper do the same ? To answer this, I would set the bore gauge as you showed and compare (several times) with the caliper (if I had the tools...) I'd love to know how (in)accurate it is...

[@whiplashmachine]

We use mics to measure and compare in tenths. A caliper is not for that kind of accuracy and will not repeat the way we need it to.

[@HDVisionsMedia]

Micrometers for .0001 acuuracy, calipers for .001 accuracy. If you got deep pockets, they have micrometers for .00001+ accuracy in the $1000 range.

[@KISSMYACE3203]

@@whiplashmachine I've heard this a lot, but yet to see any proof. My calipers repeat just as well as my micrometers and measure dead nuts on gauge blocks.

[@whiplashmachine]

@@KISSMYACE3203 just goimg by what I've heard. I don't know much about machining🤷‍♂️

[@elkscout1]

Thanks for the info. Nice video. However, I think you rushed it at the point of showing how much actual clearance was determined, while looking at the bore gauge, and the needle was sweeping. Some might not have caught on that you're looking for the maximum amount of deflection in a clockwise direction from 0. Have you ever discussed the condition of main caps, and what their condition indicates? For example, I have one main cap that has surface (bearing side) ever so slightly rough (maybe spun bearing?), while another main cap, which I think was at #1, looks like it was polished, almost chrome. What are these cap surfaces telling me?

[@jackmcminn2520]

Good video

[@artemiogarciajr8485]

What clearance would you recommend for a turbo ls? Iron block running summit ls pro forged crank and rods currently have extra clearance shells on top and bottom on mains and rods. Aiming to hit 1k+ is 0.003 too loose ?

[@bnkrdbones4391]

3 thousandths is good and you’ll want a higher weight oil

[@jscottc6675]

When using two different sizes of bearing shells to get your final desired clearance, which side of the con rod/cap and which side of the block/cap combo do you place the smaller in internal diameter bearing shell half? J

[@JacobVillemain]

It does not matter to me!

[@robertatkins272]

Thicker bearing on mains should be on the cap and on rods should be on the rod side. Think about the direction of force after the combustion event.

[@danielfrench9413]

Okay let me stop you about your tension against the rod journal. The little knob at the very end of your caliper is your tension. When you turn that and the caliper stops moving it clicks because that's the set tension you want that caliper to have against the material. Once that clicks you move it to see if there is more tension or less tension anywhere else. Use your tools correctly and they'll save you every time.

[@KISSMYACE3203]

Not really required, some people prefer them, others like to feel the actual thimble when it stops. As long as you're consistent and that translates into all your measurements you should be good.

[@davidholmes5698]

If my rod bearings is .0015 what size bearings i buy sir

[@محمداحمد-ب5ي6ل]

هو المطلوب اكبر قدر من الدقة في الخلوص بين الكام شفت وعمود البستم ومكان حركة عمود الكرنك فالقياسات يجب تكون لها قاعدة ثابتة في القياس يعني ارقام مسبقة للقياس انت لم تقولها ولم تعطيها

[@fuzzywoz]

Great video, need some more tools. (:

[@victorjoya5702]

Cuanto. Es. El precio. De un motor. Dodgers 5.9. Reconstruido.

[@natsts50]

Correct procedure for dialing camshafts in.

[@taoisttiger4702]

Still pretty confused about how and what that dial bore gage was doing

[@alexleighty9892]

I get it. It takes time and practice to truly understand what these tools do and how to properly use them. The video is accurate, meaning the KZbinr does not mislead the audience, but there's something very different and vastly more helpful about having someone show you how in person how to use a micrometer and bore gauge (dial, like this one, or digital). I had a friend show me in person last weekend and then I spend a week using it. It was a day or so of using the tool on my own before I truly had a feeling of confidence I was using it correctly. Amazing what sitting alone in a garage with some tools and some spare time can teach us. ...and KZbin too!

[@akramdastager45]

What is the max vtc for the Skunk2 ultra 1 cams for a stock k20z4?

[@iurycamargo710]

Vemos nesse vídeo como não manusear instrumentos de precisão e que são tão sensíveis. 😢

[@doug595959]

if i had a guy in my shop that tightened down a micrometer and forced it over a crank journal the little jerk would be flipping burgers tomorrow.

[@andrewwasson6153]

That was a good demonstration on how to get the feel for the right amount of tension. It was a good demo except for the hair on the back of my neck raising when it squeaked.

[@cecilmaye1421]

WHAT HAPPEN IF ENGINE BUILDER RESURFACE CRANK AND HE INSTALL STANDARD BEARING AND ENGINE IS INSTALLED?????... .

[@spankeyfish]

I'd be paranoid about scratching the bearing material with the bore gauge, lol

[@ChevyConQueso]

It happens. I have the same Mitutoyo bore gauge, and I removed one of the internal springs, because it applied too much pressure. Marks will always be there. Gouges should not.

[@adekoyaadedayo2498]

I love ur video would like one on one with u via my mail,planning an engine rebuild with my RX 300 lexus engine