Airborne Ed Posted November 15, 2016 Report Share Posted November 15, 2016 Hi to everyone , Gentleman , I have been arguing with my buddy Garyp who is on this site . I should say friendly discussion since he was my combat buddy over Nam .I have been helping him with his 39 dodge business coupe by tearing down the flathead 6 .Basically I found that 3 of the main bearing had shims in there and 1 rod bearing also had a shim . The crank has some scratches on the journals . So I know the crank will have to be ground down . The problem is he said he was talking to a machine shop near him that will most likely do all the machining that needs to be done. Gary said that the guy told him to get the new bearings and he will machine the crank to them. I have never in my life heard that . The guy has not even seen the crank .I tried explaining to Gary that you can't know what size bearings to get until he grinds the crank . He doesn't believe me , Please help and talk some sense to him when I show him this post . Thank you all Quote Link to comment Share on other sites More sharing options...
wayfarer Posted November 15, 2016 Report Share Posted November 15, 2016 From another Nam vet, perhaps he bumped his head 'over there' ? How does he think he will know what bearings to buy? And, I'd be looking for a different machine shop. Gary 2 Quote Link to comment Share on other sites More sharing options...
BigDaddyO Posted November 15, 2016 Report Share Posted November 15, 2016 16 minutes ago, wayfarer said: How does he think he will know what bearings to buy? And, I'd be looking for a different machine shop. Ditto. 1 Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted November 15, 2016 Report Share Posted November 15, 2016 A qualified machine shop will turn the crank and supply the bearing themselves based on the amount of undersized needed to clean the journals...to put this to the customer is not professional at all in my experience nor in my own opinion. There are cases where the mains may be one size, the rod journals yet another...and there is not a need to sacrifice more metal on one just to match the other. Get another machine shop would be my next words. 2 Quote Link to comment Share on other sites More sharing options...
dpollo Posted November 15, 2016 Report Share Posted November 15, 2016 I agree with the above, chances are the journals are now standard with some considerable wear and .010 willclean everything up, but how do you know until everything has been measured? In fairness to the machine shop guy, he may be thinking that undersize bearing shells are scarce and he would then have to go with what is available. Shells were common in .010, 020 and 030 . O10 would be my preference if it is possible. 1 Quote Link to comment Share on other sites More sharing options...
Airborne Ed Posted November 15, 2016 Author Report Share Posted November 15, 2016 56 minutes ago, wayfarer said: From another Nam vet, perhaps he bumped his head 'over there' ? How does he think he will know what bearings to buy? And, I'd be looking for a different machine shop. Gary Sometimes I would like to bump his head over here !!! Quote Link to comment Share on other sites More sharing options...
Airborne Ed Posted November 15, 2016 Author Report Share Posted November 15, 2016 Thanks Guys , You always come through . Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted November 15, 2016 Report Share Posted November 15, 2016 I know you two are buds..but if he has you building the engine, should you not have control over the things necessary to ensure that when your names goes on, it states the quality has gone in...got no dog in this fight but hate to see a good dog whipped for no reason...either there is trust or there is not... Quote Link to comment Share on other sites More sharing options...
dpollo Posted November 15, 2016 Report Share Posted November 15, 2016 I often thought that if I opened an engine shop I would use a grenade as my logo then no one could complain. Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted November 15, 2016 Report Share Posted November 15, 2016 Satisfaction Guaranteed... translated to modern terms to define the meaning...I am satisfied with your money and guarantee you are not getting it back! Quote Link to comment Share on other sites More sharing options...
Young Ed Posted November 15, 2016 Report Share Posted November 15, 2016 Quote Link to comment Share on other sites More sharing options...
DrDoctor Posted November 15, 2016 Report Share Posted November 15, 2016 In my former vocation, there was NO such thing as a guarantee. Each individual/case was unique, and the outcome, while somewhat predictable, was never assured/guaranteed. But, I do love Plymouthy Adams take on the modern meaning of “Satisfaction Guarantee”, I’m satisfied with your money, and I guarantee you’re not getting it back!!! And, it’s very applicable to my former environment – if/when we finally got reimbursed for our services, usually at considerably less than what we charged, there was no way we would even think of giving any of it back, because what we got barely covered our overhead. Thx . . . Quote Link to comment Share on other sites More sharing options...
janan5243 Posted November 15, 2016 Report Share Posted November 15, 2016 there are machine shops that spray weld the journals on a crank and can then regrind to original specs. The only time they can't do that is if the crank is damaged another way, such as cracked or bent. ask me how I know that. There are several shops where I live that do that type of machining. I would ask the shop if that is what they intend to do. Quote Link to comment Share on other sites More sharing options...
knuckleharley Posted November 15, 2016 Report Share Posted November 15, 2016 (edited) Guys,as yet another VN vet,I have to tell you that I used to work in a crankshaft and camshaft rebuilding in Denver,and they rebuilt cranks and cams for everything from 4 cylinder 20's cars to ones 16 feet long then went into the trucks that worked the salt mines. LOTS of the stuff they rebuilt was hard to find parts for,so it wasn't unusual to rebuild a crank to fit the bearings that were specified. This might mean just turning one down to meet the required specs,or it could mean welding one up,hard chroming it,and then turning it down to spec. We even welded cranks and cams back together that were broken. Personally,I like the attitude of that machinist,which is "You tell us what you need it to be,and we will make it that size". Of course,damn few machine shops are equipped to weld up journals,grind them down,hard-chrome them,and then polish them to size,so he almost certainly has a place to send the crank if it has to be brought back to factory original specs,or something slightly smaller. Edited November 15, 2016 by knuckleharley Quote Link to comment Share on other sites More sharing options...
garyp Posted November 15, 2016 Report Share Posted November 15, 2016 OK if you guy's are done beating me up I told Ed the machine shop guy said he always matches the bearings to the crank I just assumed he would need the bearings to do it my mistake. This machine shop has been in business for 65 years and does the engine work for NEMF a large trucking company here in Lehighton also does work for Mack truck and also makes parts for artillery pieces that goes to the Army so I think they are a reputable machine shop. Quote Link to comment Share on other sites More sharing options...
Airborne Ed Posted November 15, 2016 Author Report Share Posted November 15, 2016 Well Gary , I took care of you over Nam and I am doing the same for you now . Trust me brother . I don't see the crank needing to be spray welded ---Just trued up . Thanks for the continuous ongoing comments . No matter how old you are it's always great to learn something new everyday .----And I will be asking for many more answers down the road here. Thanks , Ed Quote Link to comment Share on other sites More sharing options...
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