Measuring crankshaft oil clearance on a Chevy small block V8
Вставка
- Опубліковано 5 жов 2024
- The old adage, "measure twice, cut once" rings true for Davin today as we measure for oil clearance before our crank is reground. Davin's been rebuilding engines too long to just trust the numbers that come from the factory. So today, he's not being lazy and putting in the extra step to verify that everything on the rods and mains is as it should be. Plus at the end of the day, we get a surprise visit from an old friend.
Thanks to our sponsor RockAuto.com. RockAuto.com is an auto parts retailer founded in 1999 by automotive engineers with two goals: Liberate information hidden behind the auto parts store counter (by listing all available parts, not just what one store stocks or one counter-person knows), and make auto parts affordable so vehicles of all ages can be kept reliable and fun to drive. Visit www.rockauto.c... to order auto parts online 24 hours a day, 7 days a week, and have them conveniently delivered to your door. Need help finding parts or placing an order? Visit our Help pages for further assistance!
Subscribe to our UA-cam channel for new videos every day! bit.ly/HagertyY...
Visit our website for daily automotive news, cars stories, reviews, and opinion: www.hagerty.co...
Stay up to date by signing up for our email newsletters here: www.hagerty.co...
Follow us on social media:
Facebook | / hagerty
Instagram | / hagerty
Twitter | / hagerty
If you love cars, you belong with us. Hagerty Drivers Club is the world’s largest community for automotive enthusiasts. Members enjoy valuable automotive discounts, exclusive events and experiences, roadside service created specifically for collector vehicles, and a subscription to the bimonthly Hagerty Drivers Club magazine. Join Hagerty Drivers Club here: www.hagerty.co...
Like what you see? Watch our other series including:
Redline Rebuilds | Time-lapse engine rebuilds from start to finish bit.ly/RedlineR...
Barn Find Hunter | Tom Cotter searches the country for abandoned cars bit.ly/BarnFInd...
Jason Cammisa on the Icons | The definitive car review
bit.ly/JasonCa...
Revelations | Untold Stories About Automotive Legends with Jason Cammisa
bit.ly/JasonCa...
Contact us:
Suggest and feedback - tips@hagerty.com
Press inquiries - press@hagerty.com
Partnership requests - partnerships@hagerty.com
As a retired machinist and later engineer I would suggest checking your bearings for size in at least three places in case of out of roundness. Even if the block just been line bored or honed you can have hard spots in cast material that causes it to not machine properly.
I have a question for you, Davin used a bore micrometer and by the looks of it, it had three points of contact (at 3:32) for measuring. Wouldn’t that be checking in three locations all at once? He wasn’t using snap gauges and I understand using more locations when you’re using those.
@@Hoaxer51 looking at when David is measuring the main bearings (6:18) there’s a pin in between the wheels and one opposite. I thinks these pins do the measuring and the wheels help with centring.
@@Hoaxer51 indeed there are 3 measuring faces on the bore gage. That just gets you centered. What the fine gentleman means by check 3 places is rotate the gage to measure 3 different locations of the circle to get 3 different readings and verify there aren't any spots over or undersize. As he said, just because you machine or bore a circle doesn't mean it will for sure be "round" or a perfect circle. I hope that explains it.
@@joshuagibson2520, What I saw at 3:32 looked like it just had the three contact points but as jzab pointed out at 6:18 I can see the single contact point so I understand why Vettekid said to check at three points. Thanks All for straightening this out for me, I saw one thing and I should have kept looking. I really enjoy these videos and there’s a lot to be learned here even from a short video.
@@Hoaxer51 all good my friend. I had a lot of old timers help me out in the trade over the decades and I've always vowed to try and pass along as much as they have to me.
Watching Dave work and explain stuff makes rebuilding a motor seem so much more achievable for someone like me
Totally agree
Davin, seeing that Buick straight eight engine restored and in it's appropriate new home was great. That '51 Buick Super convertible is a treasure. I'm a convertible guy myself. I own a '12 Chrysler 200 Touring convertible. I'm learning about my car and have so far done front and rear disk brake reline and changed out the power steering fluid on my car.
What a beautiful Buick! I used to be into speed but these days I am more into comfort.
Tuned in for the 283 update and now find my self tickled pick seeing the Buick update. Very nice job 👍🏻
Would like to see a more detailed article on the Buick install into a newer frame and then the frame adapted to the body. Great show!
That Buick is just, wow!
Great info Davin.
I usualy hate the early 50's elephants but this one is sooo loaded with chrome details that I love it !
Who knew davin is only 2" tall haha! I love the new thumbnails and the quality of the videos are always on point. Thanks Hagerty
The only program I look forward to. If I don’t get my redline fix I get itchy.
"turn something maybe musty and ugly into something nice".
That's Davin's "sustainability" advice for you. Priceless.
Don't throw the past. Make it last.
The Buick looks fantastic!!
thanks for the videos. love the thoroughness. that Buick is stunning. thank you for sharing that update.
Love the growl of that beautiful Buick
So cool Man..the practicality and the effort put into something that someone like me find’s interesting..top notch stuff in the preparation that evolves into an art form..and not just a job
Literally gasped when I saw the Buick! What a beauty! 👏🏽
That Buick makes me want to drive in to the local "A&W" and have the car-hop bring out a frosty mug of root beer on the tray that hangs off the half-open window!! What a great car!!! 😍🤩 (I believe I just showed my age!!!! 🤣)
Nice! That was a great finale, maybe a series?
This is the kind of guy that every apprentice mechanic wishes he had while in training... flat out awesome
That Buick is sweet!
Very classy ride there Davin. That car almost swallows a fella up...
Love the Buick - - Awesome job
I like the change up on the sound and camera work this week.
That Buick is AWESOME!!!
What about Snowballs ride? That thing is rolling history. Donde esta el carro Snowball?
Noticed the Oldsmobile wheel covers on the Buick. Nice trick...............Jay
You don’t need to check your bearings before the crank is reground if it’s cut .010 U.S. you just buy .010 under bearings you do need to check each Clarence but the crank will be cut exactly .010 under no more no less checking bearing clearances is just to verify your bearing bores don’t have something funky going on
Watched for the boring "how to measure" content but wowed! by the Buick update ending. 😎
Good exhaust sound Buick👍
That's a lot of digits on that Rear Main measurement. Is that last digit a guess or is your tool that precise?
Wish you'd done this with a BMW S54, S65 or S85. Really nail down what's going on with those clearances vs the crank diameter.
Man, that's a good looking Buick Super-Vic! Maybe Hagerty could do a video showcasing it? (aside from you driving it at the end of a Redline Rebuild video) 😀😀
Let me put something out there, I see you rocking the micrometer up and down. Assuming you are using the largest measurement, aren’t you taking a tipped measurement of the diameter? This would be larger a than a measurement taken with the instrument square to the diameter.
Wow,what a beautifull Cruzer, purrs like a kitten. Great workmanship thru out motor ,chassis, paint an color combo,
Gorgeous Buick. 👍🏼
Love the fancy tools
Great to see the Buick straight-8 again. So if the frame is a Crown Vic underneath the Buick, what is the Buick engine mated to? I think I heard a downshift at one point and didn't think the Dynaflow would sound quite like that.
It's a 700r4 and the chassis is from a Caprice Classic
Firstly love your channel, and it's great to watch you work. But with the rod vice I thought you'd have to have the rod and the cap clamped in there to prevent any twisting, what's your reasoning for just having the rod end clamped in there? Also, would you ever balance the rotating mass of a stock engine like this?
@6:30 who else thought that was some foreboding music as he was writing down the numbers? Really confused me for a sec until I recognized the sound haha.
Nice Buick Davin
Ah yes the Buick straight 8 the rocket scientists at Thirlby's tried their hardest to destroy
Wow that's a pretty one 😍
Man, that cap popper-offer is sweet!!! Where do I get one of those?
I'm really interested to see a 289 with some cut Vortec head as close to 58cc as possible and a Sniper EFI or MPFI..
Thats a great video,thaks!!
Good show David. Out of curiosity. What ever happened on the sunbeam tiger project? Did the fellow finish it? Or what ever ended up of it. Thanks
So I guess no answer on that race car yet? See how you practically called me out on it for asking in the last video. I was just wondering cuz you started and finish three other projects since then, a little update would be nice. You guys are doing great work and I enjoy watching your videos and look forward to all the stuff that's to come.
Lots of stuff going on in the background on moving that project forward. We kind of have our hands tied a bit at the moment. Glad you're still interested in the project. We will get to it quite literally as soon as we are able to!
@@Hagerty thanks for replying
Davin, I really enjoy the SBC build. I don't know if you have a camshaft picked out but it would be cool to see you use something like a Duntov 30-30 solid lifter cam and vintage 4 bbl intake/carb to top it off. Any thoughts on where this engine will end up?? Thanks!
With stock heads it might be too much cam for drive ability .
Where did the '37 Ford racecar build go? No updates in forever 😔
I'm a cheap, lazy bastard. I just put it all together and plastigauge it. If it plastigauge fine, I send it
Yes, cheap and lazy. Might work, might not, but it’s one way to get it done if you don’t have bore mikes.
never found a wrong stamped bearing , however , i measure shells with ball mic in case and to catch wrong BOXED bearings . that i HAVE had a few times in past . now i have REMOVED used bearings stamped wrong ..... kinda ODD , but your warning is excellent none the less ; too possible to happen
Yup! We’ve gotten wrongly boxed/labeled bearings in the past, which is exactly why we always measure and verify!
How to check SBC oil clearance- fill with 5w30. Check hot oil pressure at idle. If less than 15psi, change oil out with 20w50. Recheck oil pressure at hot idle. If above 15psi, ship it. Lol
I know you’re busy, but I noticed you torqued the main bearings out of torque sequence. Is that okay? I’m getting ready to measure my mains in a M117 (560SL) and I’m curious to know because it would be much easier to measure with the bore gauge out of torque sequence.
Very good
Ok I have to ask what ever happened to the mustang you drove from California seams like you got it back to Michigan and it was never seen again.
Great from Poland !! Cool
Very baeutiful car.💪💪💪👍👍
Luv that car
DAVIN WE WANT YOU TO DO AN LS...
Is that a large journal or small journal block?
Small
GM specs closer oil clearance on those engines. Around 1.5 thou. Which for a standard engine is fine though use the high pressure,,,not high volume 350 pump which pumps 55psi V around 35psi for the original. Then use a synthetic oil.
I use 1.8-2 thou on 7500 rpm 12-1 350 race engines with 15/50 synthetic with no issues. None of this 2.5-3 thou rubbish using mineral oil. Oil pump uses a lot of power and for a wet sump loads up the dissy gears big time.
PRO
Too much coffee.
Judging by the guideline standards you don’t like ANY negative feedback ... but this is all that is wrong with the internet . All this BS on for a Stock block , stock rod motor ? Some one has trust issues... really .You are the reason trolls think every bolt needs to be torqued Too. Mahle and rock auto in the same sentence is absolutely crazy ... If you you can can explain why all this is needed for a bottom of the line rebuild , I will never comment here again . This is below what 90 percent of
People are doing . And your teaching them nascar standards..... and if you don’t reply ... say hello to you BEST troll
I pray for you to get well soon.
U ppl out of touch. BLOCKED