machine shop screw up
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Senior User
Joined: Sep 2010
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machine shop screw up
ok well i guess its time for a new macine shop, he's messed up with my motor 4 times so far,
1. He messed up while boreing out my motor, and he had to get a whole new block, took him 6 weeks just to get my motor back to me.
2. he lost my rockers
3. when i gave him my heads he told me they were gonna cost about 200 to rebuild, i got the bill back and the heads to rebuild were 540$$, WTF!
4. when i got my heads back this morning i got them torqued down on my block and started putting it back togethr. i put in my new lifters, i put in the push rods and when i put my rockers on they didnt even touch the pushrods. the rocker bottoms out on the stud shoulder, i took a pushrod out and compared it to the ones i took out, they are the same length, i pulled a lifter out and it was the same as the old one,
i called the machine shop and he assured me that he did everything right, and hung up really fast,
so heres my question, it seems to me like the new valves he put in are shorter? or the studs that he put in are too long, could i fix it by putting in longer pushrods or what shoud i do?
1. He messed up while boreing out my motor, and he had to get a whole new block, took him 6 weeks just to get my motor back to me.
2. he lost my rockers
3. when i gave him my heads he told me they were gonna cost about 200 to rebuild, i got the bill back and the heads to rebuild were 540$$, WTF!
4. when i got my heads back this morning i got them torqued down on my block and started putting it back togethr. i put in my new lifters, i put in the push rods and when i put my rockers on they didnt even touch the pushrods. the rocker bottoms out on the stud shoulder, i took a pushrod out and compared it to the ones i took out, they are the same length, i pulled a lifter out and it was the same as the old one,
i called the machine shop and he assured me that he did everything right, and hung up really fast,
so heres my question, it seems to me like the new valves he put in are shorter? or the studs that he put in are too long, could i fix it by putting in longer pushrods or what shoud i do?
Postmaster
Joined: Nov 2002
Posts: 3,447
Likes: 1
From: Littleton, CO
What motor is this he is working on. Take the heads back and ask him to pull a comparable set and see whats wrong. If he bows out, I would suggest that you mention to him he should put it together since he believes he did everything right and charged you extra...
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Senior User
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hes rebuilding a 302 that going in my 67 stang, i called him and told him that there was a problem and he said he did it right nd hung up on me, so him hanging up, to me sounds like he knows he did something wrong, i really dont want to pull the heads back off bc theyre already bolted down and the headgaskets im using arent cheap. thats why im wandering if longer pshrods will solve the problem
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
hes rebuilding a 302 that going in my 67 stang, i called him and told him that there was a problem and he said he did it right nd hung up on me, so him hanging up, to me sounds like he knows he did something wrong, i really dont want to pull the heads back off bc theyre already bolted down and the headgaskets im using arent cheap. thats why im wandering if longer pshrods will solve the problem
John
Senior User
Joined: Dec 2002
Posts: 473
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From: SW Florida
Dumb question here, are you sure if the replacement block isn't a 351? The blocks are very similar but a 351 has a taller deck height that would make the 302 pushrods be too short???
You can tell quick and simple, if the water pump bosses are right at the level the heads are at then it's a 302, if there's about a 1/2" gap then it's a 351.
You can tell quick and simple, if the water pump bosses are right at the level the heads are at then it's a 302, if there's about a 1/2" gap then it's a 351.
Hotshot
Joined: May 2004
Posts: 12,170
Likes: 5
From: The hills of No. Calif.
Or see if you intake manifold will sit right in place or if there's a huge gap between the manifold and the heads...
Valve geometry is critical, simply installing longer pushrods can throw things off. When the valve opens,and closes the rocker basically rubs across the end of the valve stem, If the pushrods are too long, the rocker can actually come off the valve stem.
Are the lifters correct? Do you have a new cam, possibly one that's been reground and has a smaller base circle?
Valve geometry is critical, simply installing longer pushrods can throw things off. When the valve opens,and closes the rocker basically rubs across the end of the valve stem, If the pushrods are too long, the rocker can actually come off the valve stem.
Are the lifters correct? Do you have a new cam, possibly one that's been reground and has a smaller base circle?
Senior User
Joined: Nov 2009
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First off, I would try just being cool with the machinist. Go to his shop when you know the timing is right, and ask his advice. At this point the most economical solution may be to install a custom length, or correct set of push rods.
An attorney would not be an economical solution, probably at least $600.oo.
An attorney would not be an economical solution, probably at least $600.oo.
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Posting Guru
Joined: Mar 2009
Posts: 1,427
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From: Huntington WV
compare blocks an see if that is the correct block he gave you an then see what he says when you stop by. then contact the better business if it is still not resolved an take it from there.
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Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
Quick way to tell 302 from 351 is the block behind the distributor, just below the intake- The 302 is about flush, the 351 has about a 1" step. If it is a 302 rotating assembly in a 351 block, then the pistons would be quite a bit too low in the block to even run as well.
Hotshot
Joined: May 2004
Posts: 12,170
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From: The hills of No. Calif.
Wouldn't even fit...the 351W has larger main bearing journals than a 302, even an idiot of a machinist would know something wasn't quite right if he tried to put a 302 reciprocating assembly into a 351W block as soon as he set the crank into place...
Cargo Master
Joined: Dec 2006
Posts: 2,511
Likes: 8
From: hinckley ohio
also the oil pans aren't interchangeable between a 351 and a 302.What year is the block and the heads?I think rooler cam push rods are shorter then non rollers.In 1970 they went to the torque down lifters before 1970 are like Chevys where you have to adjust them with the engine running.
Senior User
Joined: Nov 2007
Posts: 120
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From: New York City
If you paid with a credit card, contest the charges with the credit company. It might take 6 months or more, but worth a try. Prepare all the paperwork that sways in your favor (photographs, invoices, etc). And stay away from ****ty mechanics.
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well he finally decided to answer my calls after i left a voicemail saying something about an attorney, lol. he came and picked them up, and decided to fix it, he wouldnt tell me straight up what he did but it looks like the studs that the rockers sat on were changed, when he brought them back he was about to leave and handed me 500$ cash, "i hope we can still do buisness later on, and again im very sorry" were his exact words, guess i did alright getting both heads totally rebuilt for $40, haha
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