Can You Deck A Numbers Matching Engine Block?

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There was a lot of concern in the comment section of the first video in this series about how we could deck the block and save the numbers... Here's how!
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[@JAMSIONLINE]

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[@guysumpthin2974]

Std bore 396 will over heat the rings , the average wall thickness is too thick , the coolant doesn’t effect the wall enough, which is why later chevy made them into 402 with the 396 badges still on the cars. The same effect happened in the 283 , although the wall thickness varies SO much in those engines

[@guysumpthin2974]

People have been decking those blocks and re-stamping those numbers for over 40yrs

[@JohnH20111]

if i ever need any engine work done, i’m going to bring it to you, because y’all do high quality work and all

[@Drmcclung]

In my own experience those GM big blocks weren't exactly square and true or even totally flat right out of the factory, early ones were probably the worst. You've done a great job getting that block right! 👍

[@JAMSIONLINE]

Thanks!

[@Drmcclung]

Now he can run aluminum heads on it and not constantly blow gaskets anymore thinking the heads are bad 😎 I've still got a Ford head I'd love to mail up there for a total rebuild - good machinists are hard to find in my area

[@shadvan9494]

in my own experience with chevy big blocks, I have seen the decks vary from side to side by as much as .015 on the stuff made in late 60's early 70s. but there was a lot of meat on the bones of the old big blocks. the was 1 particular 396 block casting that shared the same cores with the 427 of that era. I dont remember that particular casting nubmer ritgh now but the cylinder walls were super thick. you could bore them out to 4.310 without issue. that is a 0.216 overbore! the stuff made in the mid 70's was better machined, but they took out most of the beefyness to those big blocks to save weight. the Gen V blocks are usually within a few thou of each other. they really got their crap together with machining and the Gen V blocks.

[@Drmcclung]

@@shadvan9494 yeah those early ones were a bear right out of the box, no 2 blocks would even measure the same. Intake manifolds wouldn't fit quite right. Not bad but not right. You'd have good intake gasket squash on one end, hardly any on the other. Without doctoring forget about aluminum heads on the early ones, they'll blow head gaskets overheated just a little just once

[@petermolnar8667]

@@Drmcclung why is it just the aluminum heads by the way?

[@bryancohn9406]

I’m always amazed at how inexpensive engine machine work can be given the cost of machinery, time and most importantly knowledge required to do the job properly. Having had machine work done for dozens of various racing engines used in road racing over my 36 year career I enjoy seeing the care and expertise you put forth.

[@CodyMcGriff]

Even a million dollar machine can only charge so much per hour or the business model won't work, longer ROI, debt is a tool not a burden

[@sc358.]

​@@CodyMcGriff what kind of ROIs do you see for different pieces of equipment?

[@rollydoucet8909]

Competition from other shops was the main reason for inexpensive machine shop labor rates. Barely breaking even seemed to be the "norm" for decades. Today, there are fewer shops due mostly to the fact that the auto rebuilding industry is not what it once was, with fewer people keeping cars for long periods of time. Our shop has survived well on performance and light industrial services, and we're constantly adjusting (raising) our hourly labor rate to meet the cost of being in business. At the end of a day, week, month and year, we're just breaking even.

[@CodyMcGriff]

@sc358. I have no idea but I'm sure some quick Googling would help determine that but you would need a full machine shop to get started remachining engines, I would start by working for a master machinist and learn from the bottom up, pick the masters brain and go from there 🧠

[@CodyMcGriff]

@sc358. this could depend on cost of machine and how often you use it vs. How much each machine can justify per hour charge for instance 10% of a machine shop can pay off the whole machine shop, I went to college for manufacturing and we used the welders and wire wheel 80% of the time and the lathes just sat there, not good ROI, much more skill and precision involved so do your homework before buying any piece if equipment. My vote for anyone is to pay for chatGPT 4 for a month and ask it all sorts of question such as you are asking me, it has helped me indefinitely build websites, apps, SaaS and apparel brands and it will only get better, get work !

[@williamorton7600]

I appreciate that you're taking the time to keep as much metal as possible for that original block. Very professional.

[@coolhand1964]

I restore vintage and classic motorcycles in my retirement (early due to health) and I get great enjoyment from these videos, however I do suffer 'machine shop envy' for a day or two after. I wish I had your space, your machinery and your cleaning assistant to offer advice. If I am struggling with something and need a break, your videos are a great inspiration to get back to the problems at hand (75 year old motorcycles inevitably have 75 years worth of bodgy repairs). Keep up the good work with the videos, it never gets boring for a fitting and machining nerd. 👍 😊

[@MrCyborgAlien]

Love the channel. I appreciate that you take extra time out of your day to do premieres and interact with the community as the video is played.

[@maggs131]

That tool you used to bring the sleeves into the correct diameter isnt boring, its rather exciting

[@andoletube]

haha😅

[@christianpaulroldan4010]

😂😂

[@thecanadiantradesman7916]

Nice to see the level of care and craftsmanship your shop takes. You never really get to see this when you take your parts to a shop. They may not be special or irreplaceable to the shop but are always the only thing you care about and hope the shop treats them the way you guys do. Keep up the good work and thanks for showing us there are people out there that still care about the work they do and the customer.

[@rascosim1]

So glad I discovered your channel. Enjoy your videos very much. The farmers up there don’t realize how fortunate they are to have you guys take care of their equipment. Your dad did a fabulous job on the new building. Keep up the good work . Joe Roberts Birmingham, Al.

[@paulmathews5686]

I was one of the guys concerned with the numbers being wiped off . you had to take the time to set up the machine , and then finish with a hand file on the top edge. that's all you could do , & that was for sure the " MONEY SHOT " there on those numbers !! you wouldn't believe how many times over the years I asked the machine shop to do what you just did , and they would say , yeah ,sure , okay , no problem !! then you get the block back , and the lazy sack of shit , wouldn't take the time, like it would of stopped the whole shop from running if he did what you just did !!! THANKS FOR TAKING THE TIME , I'M SURE YOUR CUSTOMER APPRECIATES THAT !!!! 2 THUMBS UP , KEEP UP THE GREAT VIDEOS !!!

[@Charlie-wr6dy]

Beautiful job on that block, and your explanation of each process makes this channel so great to watch. BTW, we saw the cleaner playing with some of the machines while you were away, I hope everything was in order when you got back!

[@ronmurphy9819]

To me you have the dream job! If you love it and it’s fun then it’s perfect. I was an engine man in the US Navy. I loved it, now I’m trying to learn some machining. I’ve got a mill with a 49 inch table and a lathe. I had some machinist friends and would like to think I learned enough to be dangerous. Thanks and keep them coming . I like learning new things. Thanks Ron

[@OlSgtLove]

Always enjoy watching your channel and the attention to detail you and your Dad do . Excellent work everytime.

[@JAMSIONLINE]

Thank you!

[@JB-fn9lb]

Great content. I can't help but find irony in the length of Stanley(?) tape measure you use with the hook still attached to indicate some depth measurements given all the precision measuring tools available and the efforts taken to ensure accuracy and end quality. No big deal as the measurements gives the required resolution for its purpose, just find it humorous. Thanks for making and sharing all the good videos and keep up the good work.

[@Terrackhimself]

After a few years making cylinder heads, I find this particular operation amazing. A cutter that large with a single blade. Such a good finish. I"ve seen worse finishes with 30 plus inserts and a wiper blade.

[@bigblocklawyer]

Dave Crume, who built engines for Bo Laws for years did my numbers matching 396/ 325 from my dad's '65 Impala SS, my '66 Corvette 427/450 and my '67 Corvette 427/435 blocks and he decked them and saved the numbers on all three. Years of hard use and never had an issue.

[@jayss10]

Good to see this old girl coming back. One thing I would strongly suggest. Please check all the lifter bores if you haven't already and make sure you have ample clearance with the replacement lifters. I'm assuming the customer is ether going to go with a solid flat tappet or a hydraulic flat tappet camshaft. Anymore these flat tappet motors have a hard enough time breaking in the camshaft, I wouldn't want to give this old girl anything to complain about.

[@kevowski]

Your videos are one of the few I fell compelled to watch from start to end (except the sponsorship) brilliant 👌🏻 Thank you for sharing 🇬🇧

[@thekracken4572]

Why do find this entertaining as hell? I'm not a Mechanic or Machinist. I'm not even a car guy really. I can watch this for hrs!!

[@roccomicelotta3798]

Great video! This was my first time on your channel and certainly not my last. You explained this process so well that I almost feel I could do it. Thank You, Ric

[@craigm.9070]

Excellent video! Thanks for explaining the math on this project; your customer should be very happy with your thoroughness. Looking forward to the assembly, I haven't done a BBC assembly in quite a few years now.

[@Rocketman88002]

Nice presentation! Unobstructed video clear audio and guidance throughout the process! Not much has changed since the 60's really considering the history of machinng prior to the 60's. Its still all about the operator. Machines, metals, materials and technology have evolved and blended to make available better priducts.

[@jaredburns6652]

Ughhh 11 minutes I can’t wait. Best machining channel on here

[@Duh6666666]

I also really enjoy CEEA and IC weld.

[@davidblain2714]

Thanks buddy! I'll say it again, just love being there in the shop!

[@davidfox9100]

Such an amazing video and channel I love how detailed you are and how in depth you go with your explanation 11/10 recommend to anyone.

[@dwaynepuckett16]

The cleaning Guy did great job while you were away, give him big thanks.

[@roberta4989]

Really great content. I am a retired mechanic and watching this brought back memories of fun and had work.

[@ercost60]

Great video. 3:32 That 1/16" tape measure used for depth of cut is a funny contrast to all your other precision tools. :)

[@michaelthorne5441]

tdc is usually within that range

[@klmorris1576]

I love this channel. I like the care and concentraton you put in every project.

[@TxStang]

That deck finish is beautiful , I just my 5.0L back from the machine shop and the deck finish is rough ... they claimed it is fine and that it is normal and the MLS head gaskets will seal but I am having doubts ..... small town machine shop ...... wish we had good machine shops like you in our area !

[@rotax636nut5]

Quality work, you are on the road to achieving perfection, keep it up and one day the world will beat a path to your door..

[@saltycreole2673]

Nice to see young folks doing this work. Many (Too many) times you see us old, nearsighted, potbellied grayhairs doing this work. Much respect.

[@charlieromeo7663]

Here here! My buddy operates an engine machine shop and can’t find anyone south of 40 years old that wants to learn this trade. I guess it’s because fewer kids are into automotive related work and tinker with their own vehicles and don’t want to get dirty. There’s very little grease and grime on keyboards, iPads, and smart phones. Keep up the great work and quality videos. I will watch them as long as you make them.

[@NickGreiner1988]

​@charlieromeo7663 I'm 30. I've already done an apprenticeship as a machinist (general) and I can't find an engine reconditioning business that will take me on and train me to use their machines, which to be honest look easier to use than universal mills and lathes etc. given that they are purpose built for machining engine blocks etc. specifically. Those old guys won't swallow their pride and give me a go.

[@rogerturley]

When my guys in Provo retire, I may have to make the drive to Gill. I'd trust you guys with my race engines any day.

[@erniecamhan]

So enjoy watching a true craftsman at work 👍🏴󠁧󠁢󠁳󠁣󠁴󠁿

[@rharris1336]

I miss the smell of honing oil. 😂 Amazing how much more accurate the machines are than the machines I used in the 80s. Rottler boring bar (no CNC or digital read outs) and Sunnen cylinder king hone. We didn’t even use a torque plate. Back then, we were all used to pulling into a full service gas station and the attendant checked the dipstick and told you how much oil you burned or leaked between fill ups lol. Nice precision work 👍👏👌🏻

[@jamiedhuskey6643]

I’m totally involved, dig the channel

[@oceanmariner]

I've rebuilt dozens of engines. Mostly marine diesels, but also racing and aircraft. I originally learned on aircraft radials. It's not surprising the block decks don't match or are out of square. It's been my experience that a good machine shop does a much better job than the OEM. The OEM only worries about the block falling with their wide tolerances. A good machine shop like Jim's spends much more time and better machining practices to achieve much closer tolerances than any OEM I've ever seen. Although bigger diesels that have replaceable sleeves are much closer than any gas engine. Especially cylinder to cylinder. But they usually make up and small differences by using different sleeves. And big diesels have individual heads.

[@johnpopoff7950]

Cummins yes some did have one head per cylinder and the old Big Cam/Small Cam engines had one head per 2 cylinders. Detroit Diesel only one that I can think of had one head per cylinder, that was the 149 series. I know I built many Detroits, Cats and Cummins.

[@juliejamison8059]

Yep that's my engine. Can't wait to here it run those boys do a hell of a job!!

[@Klemeq]

Love the videos! Is there ever a follow-up for the engine after all the machine work you've put in? I mean, 'after we blueprinted the block they added XYZ heads, ABC cam, and this is the dyno result' etc. Just thought it would be a neat way to conclude a block's story.

[@kramnull8962]

Then it starts to become a sales pitch like with SMR. Build a engine the entire time telling you how much better his $40,000 engine is than the one he is building. Then The one he is building goes up in smoke the first trip out. "The ole Should have bought my $40,000 engine"....

[@michaelthorne5441]

Learned a lot from this video, hope you have more

[@drewwatkinson6604]

Love the work that you do, so satisfying!

[@lilmike2710]

I have a low mile 454 out of a wrecked 86 model RV that has a date with the machine shop really soon. Its a high deck big block so we're gonna see what we can do about all that 😁 and it honestly doesn't need bored but imma go .030 O just because of..... Reasons and stuff 😊 Love the channel

[@FlatBroke612]

I’m 99% certain GM did not produce a 10.2” deck 454. The 366 and 427 commercial engines were factory “tall deck”. You can turn the 427 into a ‘54 if you clearance the block for the rod bolts though.

[@lilmike2710]

@@FlatBroke612 It's 9.800" You're correct 👍 I've never owned one before nor have I ever taken one to a machine shop. I was told in passing by someone that there were 2 different 454 blocks. One for street applications and one for service. And I just assumed the one in my old rv would have the tall deck. 😁 For once I'm happy to have been mistaken. I still have the engine but I can't decide what I want to do with it 🤔 Do I go with a C10 build or cram it into a car? Right now it ain't hurting a thing sitting there on the shop floor. 😊

[@garygroves9999]

Have you ever had a need to line bore any blocks? I see you setting the machine up on the crank journals wondering if that is ever a concern? (probably not on this particularly block)

[@brucemadden1626]

Hey--the "Cleaning Guy" did a nice video while you were away. Hope you gave him a big Xmas Bonus and maybe even a raise for 2023?

[@cobra02411]

Been a while since I've seen a 396/402 block. I forgot they had the valve reliefs in them... Good stuff!

[@johnpopoff7950]

427/454 don't need valve reliefs

[@cobra02411]

@@johnpopoff7950 Yup, bores are bigger.

[@shenanigansofmannanan]

Is there an issue with thoroughly documenting the numbers and re-stamping the numbers after surfacing? My understanding is that the "numbers matching" is the verifiable claim of "all original" that is so coveted. To that point, I'm of the opinion that it would be better to have an original block/head set that had been properly refreshed/rebuilt/ machined over the years than to replace it simply because the numbers would be gone. Ftor: I grew up as an old school diesel mechanic's kid and had the privilege of spending time around skilled craftsman in mechanic/machine/fabrication shops. I've always appreciated the discipline and attention to detail that is required for you trade. Thank you for sharing with us

[@bowtiedone2784]

It's amazing when you do this to a block and mill the heads and balance the rotating assembly then see the difference in just how smooth and responsive that engine is.

[@codenamegear9102]

Loving the vids but here’s a video idea post a timelapse of machining the head and block that is something no one does that I’m sure lots of people would love to see

[@JAMSIONLINE]

I’ve thought of it! Just low on time lol

[@codenamegear9102]

@@JAMSIONLINE I feel you man gotta work for that money

[@codenamegear9102]

@@JAMSIONLINE one question though where do you get your measurements from what are your sources

[@JAMSIONLINE]

Mainly AERA ProsisPro engine specification software

[@MrBlackbutang]

Good to seein Neil and Bob are hard at work there

[@Musicmainn]

What a great way to end the day! Its night here in Norway! Good job!💪and good night!😉💤👍

[@JAMSIONLINE]

Thanks for staying up to watch!!

[@brentwinkelman1990]

Really enjoy the content...wish i would have went to engine building/machine school instead of auto tech for college...enjoy precision measurements/equipment and the overall engine machining/building process a ton

[@thatguywillt]

I really like that block height gauge. I use a 12" caliper, but that seems much more efficient.

[@FishinFool70]

I have one for sale.. Old comp cams

[@stevenbelue5496]

Are you talking about the deck height gauge that measures from the main saddle? Where does one purchase those?

[@rogermontee8264]

Excellent work on the big block!!!!! Thanks for sharing.☺️☺️☺️👍👍👍👍🇺🇸🇺🇸🇺🇸

[@Lure-Benson]

I really like the old Chevrolet 396 and the 402. I owned a 1972 3/4 Chevrolet truck with a 402 that was unstoppable and a beast in power and now that same 402 is in my guide work boat jet boat living a new life as a marine motor.

[@dalemiller4457]

Really like what you are doing on this channel, just wondering after decking the block, do you have to take any material off the top of block for intake manifold to seal properly.

[@alanschwartz1157]

Dang! I love watching you work. The attention to detail is phenomenal. That engine will run better than Chevrolet could have imagined. So, you had to sleeve one side? I really wish I could have had your service on my last engine. King Balancing in Glendale, AZ did mine. They did a pretty good job. They're probably the oldest in the valley. I'm positive the customer is going to be ecstatic with your work.

[@wilsonlaidlaw]

I hope the owner of this block watches this video and appreciates the lengths you went to, to get a perfect final result.

[@nwliving]

4 measurements needed. 1. Align bore crank 2. Parallel bore crank and camshaft 3. Perpendicular bore cylinders to crank bore. 4. Then parallel decks to crank. Very common misalignments of all v blocks.

[@tbirdracer460]

I love this channel. Great work! Thanks for sharing!

[@happydays8171]

Anybody taking a block to you is getting so much more experience per dollar spent compared to most shops.

[@jacquespoirier9071]

much much better than most shops will do

[@clydegreenwood5673]

I like watching your videos you learn something

[@alwayssearching1882]

Another great upload boys!

[@mrenfilade7178]

Good for us youre back to work after the honeymoon! Congratulations and +1 Like

[@JAMSIONLINE]

Thank you!

[@91rss]

my cousin heard that some old farm equipment tat used GM big Blocks used the HP stamped blocks. and 3 tons had LT1 cranks in them. ever hear anything on that?

[@raysimon1368]

Nice looking machine job what grit is your final hone and what would the surface finish measure at would love to operate some of your machines boring decking and installing hardened seats but my favorite would be the serdi for valve jobs love the inserts where you get all your angles in one plunge or one at a time whole lot better than the old stones that I play with nice video

[@ronwade2206]

Worked on about a dozen, 1963 GM 390cid Cadillac motors, my best old friend has had every model 1963 Cadillac. Not one engine block was decked square or decked equally from side to side, Line Boring these things can be down right silly!

[@grantreid8583]

All the v8 boring jigs i have used didn't clamp through the cam tunnels the clamping studs continued up and then a flat bar went right across the top of the inlet manifold sealing faces. Also if you want some fun with your workmates get some of the boring chips some battery acid and mix it together in a glass. I used to do this and crankgrinding etc from age 15 to age 34 when i realised i had to get a job that paid a decent wage and i didn't go home everynight stinking of various oils, cleaners etc. The only thing i miss is being able to build my own engines dirt cheap and help the occasional mate out. I am in Aus and the job took me overseas for a few years so i have many memories of it still as i near retirement.

[@NickGreiner1988]

1 are you in melbourne, 2. Do you know of any engine reco businesses still running?

[@grantreid8583]

@@NickGreiner1988 No i am in Hobart we have 1 company still running so i would assume melbourne would have several at least.

[@bobbiggs6959]

I'm a new subscriber, and let me first say, I love your videos! I'm learning quite a bit. I do have a question though. It seems when you bore and then hone a block, it seems that you start on the middle cylinders and then move outwards. If this is true, what is the reason for doing so?

[@Aleks_Mechanics]

Notification Squad!🔥🔥🔥 HAPPY NEW YEAR!🎉🎉🎉🎉🎉

[@joe-pm3lb]

wow u are a wizard with engines

[@rogermason5833]

Question: since this block has cyl sleeves installed, do you have to be concerned about the cyl sleeve thickness you are left with after final boring and honing? If so, what is an acceptable limit on the cyl sleeve thickness?

[@rokkebill]

Nice video ! What is your max cutting depth with that cbn cutter ? Also what cutting speed and depth do you get the best result with ?

[@MattsRageFitGarage]

So you went with .0015" piston to wall clearance with those pistons? I used those speed pro forged pistons on my Ford 390 and my machinist set the piston to wall clearance at .003" on my engine. Seems to be working well. No piston slap noises, no oil consumption and it runs great.

[@donavan2676]

I think .0015 is too tight, I would never set a forged piston that tight in a BBC, .003 is about right for stock forged pistons, higher performance 4032 about .004 to .005, 2618 pistons .006 + in a BBC. The piston manufacture usually has the skirt clearance machined into the piston if you take the cylinder to nominal size. Rarely do we deviate from nominal size after measuring the pistons

[@recoilrob324]

Speed Pro says the material doesn't expand like old forged pistons did so they can be put in tight...and when I saw they said .001" was minimum I went looking online to see if that was a misprint. Found one listing on them that said .0015" was minimum and man...that is tight like a cast piston. But if the material only expands like cast it'll be OK...depending on how the motor will be run. For a show type car that's not going to have the balls run off of it once they break in and with good oil they'll probably be fine. The coating they use on the skirts might also be partly responsible for being able to being run so tight...better lubricity than bare aluminum and less chance of galling. I've never run this piston and the ones we used in the Big Blocks were always put in .004-.005" but they weren't coated so maybe that does make a difference.

[@MattsRageFitGarage]

@@recoilrob324 Yeah, my 445 FE stroker uses Mahle power pak forged pistons and has .0045" piston to wall clearance. I was surprised my machinist set my 390FE up for .003" then I found out the minimum can be .0015" with those speed pro forged pistons. That seems a bit tight to me. When I assembled the 390 even .003" felt pretty tight when test fitting them in the bore with no rings.

[@pauljanssen7594]

Most cast Pistons run at that clearance .0015 thousand or if you have a forged piston you can start at .0025 up to .006 your oil viscosity will be higher.

[@catatonia1]

@@donavan2676 The piston skirt profile (taper and barrel) is obviously designed to run tighter clearance. Obviously not a racing engine with those pistons so .003" clearance will only make noisier and reduce life especially with the slotted oil ring groove .

[@Go69]

Awesome video! Wish I had access to that type of equipment as I would be machining my own blocks in-house. Love the detail that your video includes.

[@MrsSunshine75]

Not enough piston to wall clearance for that old school TRW style forged piston, it has me worried!

[@Unhandleablehandle]

Does decking after boring ever have an effect on the chamfer size on the bores?

[@ronsanchez2842]

“That’s why the surface finish looks the way it does.” Oh you mean 10x better than anything I’ve ever machined lol

[@ronflood5697]

is the pan rail really the best way to reference? I prefer to use the main and cam centerline, after machining/correcting both of those datum lines first, of course. On your CV-616, you should try the C30 series stones instead of those AHU/JHU Stones. Those short stones were designed to straighter out tapered cylinders, not as much to finish hone fresh bores.

[@markblundell9461]

Watching this , I just realized what I should have been doing for my life’s work. Being a machinist and a mechanic! Oh well too late now 🙄.

[@GrandPitoVic]

Very nice brother. I enjoy watching machine work

[@grayv3]

If you deck the block after cutting the valve relief and chamfering the bore edge doesn’t that mean you’ll have to cut the relief deeper to be the correct depth and you’ve removed the chamfer?

[@johnsilvers5883]

What can be done about wear in the lifter bores? Do they have a sleeve or oversized lifter?

[@josephcperry]

Interesting. Does the metal in the block distort enough when the heads are installed to warrant the simulation of the torque at the honing process?

[@jakebpau2396]

Yes, The tension on the head bolts will slightly distort the cylinders roundness. The idea is to emulate the stress of the installed head while honing. Everything is rubber. Everything moves. Nothing is perfect. Remember that! 😊

[@alungiggs]

Congratulations to you and your new wife.

[@YouCantSawSawdust]

Did he get a NEW one?

[@ebutuoyebutouy]

@@YouCantSawSawdust Dude moves fast. U gotta have the latest and greatest. Snooze and u loose. Lol

[@Bird_McBride]

Wisco in Quebec will manufacture any piston you want. Just send them the specs and the blueprint. They'll machine or forge your pistons to your desired specs. This is how to get around obsolete pistons.

[@whiskeytango9769]

Just wondering about the bar that the block rests one. I imagine that before you set the block on that rest, you verify that it is also level and square? How is that done? Also, do you need to verify that the journals in the block are true, or after boring and decking the cylinders do you then line bore the crank journals to match the deck? I guess I am wondering what the original reference point is.

[@atcguy77]

An 'unrelated to this video' question: About 25-30 years ago, I remember seeing somewhere, where you could get a totally raw OEM, unmachined block or crank (Toyota in this case, I believe) from the manufacturer. Obviously, any and all machining would have to be done to it. Do you ever get requests like that? If so, how often? If not, would you be willing to tackle such a job? Your videos are terrific, and this would be an interesting addition, I think.

[@richardhintonracing]

Lovely quality work - move to England !!

[@JAMSIONLINE]

You fund it and I’ll move! Lol

[@richardhintonracing]

@@JAMSIONLINE Only wish I could - machine shops here in UK have become as rare as hens teeth everything has been bulldozed and had houses built on it workplaces , pubs, factories, filling stations, theatres, cinemas, dealerships, hospitals . UK now one vast housing estate .

[@crazylarryjr]

Question, Wouldn't you want to bore with at least the main caps torqued down and possibly a torque plate on the top of the block? I would think you'd want all stresses induced while boring to keep the bores round when properly torqued down

[@mikebelcher6692]

I noticed a chamfer on one side of cyl. I also have a 68 Chevy small block with a similar chamfer. Did the factory cut this type chamfer?

[@tedheierman1181]

With all the cylinder bores being enlarged; do you need to enlarge the upper relief cut in the top of the cylinder bores?

[@justion337]

The relief cut is based on the valve size.

[@shoominati23]

Even if you do slightly skim over the numbers, you can bring them up to the surface again with a brushing of sulfuric acid and a heating with a blowtorch. Over Stamp them again if you want to get overzealous.

[@midniter2001]

I love watching the videos guys. I have a question, can you bore and hone fiber reinforced material engine? For example a Honda h22 engine has fiber reinforced material sleeves. And generally aren't bored or honed by most.

[@wilhelmvo6399]

Do you square it with or without crank bearings in place?

[@electrostatic1]

Do you clean up the pan deck before using it as a reference?

[@donavan2676]

Old school honing here, we use diamonds, 150 grit all the way to finish size, and then 800 grit diamonds for plateau 6-10 strokes to get the right range of RVK, RPK and RK. The Plateau process gives the rings a smooth surface to ride on, but also leaves deeper grooves to hold oil which helps ring seal, and long life.

[@YouCantSawSawdust]

Sounds good. You should use your real real name,or your business name,otherwise some people simply won't believe a word you are saying. It's just what I have experienced on the internet.

[@donavan2676]

@@YouCantSawSawdust Not hard to confirm what I am saying, watch any Rottler, or Total Seal cylinder finish presentation, it's not a secret how to properly finish cylinders for ring seal, and long life. The OEM's have been doing this way for a couple decades, racers figured it out next, then the rebuilders are catching on now. Who I am has not bearing on whether what I say is the truth or not. Do your own homework, there is a video where Pro Stock engine builder Greg Anderson hones a block for Lake Speed Jr, they go over all the details.

[@YouCantSawSawdust]

@@donavan2676 I don't doubt what you are saying. Anyone can google it,nowdays. What I'm saying is,if you don't use your real name or business name when you comment,most people will disregard anything you have to say.

[@donavan2676]

@@YouCantSawSawdust Its ok, the people who know anything about honing know what I am saying is right on target, that is the target audience. BTW, I am using my real name.

[@YouCantSawSawdust]

@@donavan2676 I get it. Like,Cher.

[@michaelthorne5441]

Awesome job, do you do Yugo's?

[@TheMattzx9]

Had an ls2 with matching numbers. Took it to a machine shop and ask them to make sure they didn't remove the numbers when they decked it. went to pick it up and sure enough they had removed them. They offered to stamp the numbers back in. Was so pissed of.

[@normp3273]

No wonder why machine shops are so expensive. It's a lot of freaking work man!