Head just got back from machine shop, crack in casting. Is this head OK?
#16
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I want to have an accurate cost breakdown for when i call the shop tomorrow. No matter what they try and say, they're to blame. I know the head wasnt like that when I brought it in. If they try and tell me it was, then they are admitting to not inspecting the head.
Labor: 200
Valve guides and stem seals: 95 w/shipping
head gasket + cam tower gasket: 80 w/shipping
Head washers and nuts: 50 w/shipping
Total = 425 + the cost of another rebuilable 951 head
What do 951 heads with valves and springs in decent shape run these days? I saw several on ebay for 400, and one for 185 that was damaged and useful only for valves.
I'm guessing I can get a decent head for ~300 so I'm going to present the shop with a total of $725 and explain to them this is the amount I expect to be reimbursed for my damages.
If they comply, I probably will just end up putting an NA head on it afterall, I didnt realize 951 heads had gotten so expensive.
Labor: 200
Valve guides and stem seals: 95 w/shipping
head gasket + cam tower gasket: 80 w/shipping
Head washers and nuts: 50 w/shipping
Total = 425 + the cost of another rebuilable 951 head
What do 951 heads with valves and springs in decent shape run these days? I saw several on ebay for 400, and one for 185 that was damaged and useful only for valves.
I'm guessing I can get a decent head for ~300 so I'm going to present the shop with a total of $725 and explain to them this is the amount I expect to be reimbursed for my damages.
If they comply, I probably will just end up putting an NA head on it afterall, I didnt realize 951 heads had gotten so expensive.
#18
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When the machinist did my head he said most guides are oversize and need to be turned down for the correct interference fit, which he preferres. Looks like your machinist assumed the guides are good as is to press in.
#19
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Kevin is right, the guides were oversize and they failed to recognize this.
Who supplied the guides....?
It's their fault either way, either you supplied them and didn't know they were +, thus failed to bring to their attention or they supplied them.
They would have had to have driven the h3ll out of those just to get them in and should have known something was wrong, not to mention they should have checked the OD vs. the ones they removed.
There's no way I'd attempt to repair that head.
Whadya need.....?
A donor head....?
I should probably have one I'd practically give you just for the fact that every time I pop in here you are fighting some kind of trouble.
Some, I think you'll agree, after being resolved, were self inflicted....![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
Get Spencer to contact me offline if nobody can help you with a better offer than a free donor head. He has my personal contact info.
I'll be looking through my stash for an extra.
T
Who supplied the guides....?
It's their fault either way, either you supplied them and didn't know they were +, thus failed to bring to their attention or they supplied them.
They would have had to have driven the h3ll out of those just to get them in and should have known something was wrong, not to mention they should have checked the OD vs. the ones they removed.
There's no way I'd attempt to repair that head.
Whadya need.....?
A donor head....?
I should probably have one I'd practically give you just for the fact that every time I pop in here you are fighting some kind of trouble.
Some, I think you'll agree, after being resolved, were self inflicted....
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
Get Spencer to contact me offline if nobody can help you with a better offer than a free donor head. He has my personal contact info.
I'll be looking through my stash for an extra.
T
#21
Rainman
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+1 to what Terry said...replacement guides for 944 head are, IIRC, 0.010" oversize...which they would have had to press the crap out of the head to make fit if they didn't ream the hole prior.
Typical interference fit is what, 0.002"? Maybe less? Yikes.
Typical interference fit is what, 0.002"? Maybe less? Yikes.
#23
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Kevin is right, the guides were oversize and they failed to recognize this.
Who supplied the guides....?
It's their fault either way, either you supplied them and didn't know they were +, thus failed to bring to their attention or they supplied them.
They would have had to have driven the h3ll out of those just to get them in and should have known something was wrong, not to mention they should have checked the OD vs. the ones they removed.
There's no way I'd attempt to repair that head.
Whadya need.....?
A donor head....?
I should probably have one I'd practically give you just for the fact that every time I pop in here you are fighting some kind of trouble.
Some, I think you'll agree, after being resolved, were self inflicted....![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
Get Spencer to contact me offline if nobody can help you with a better offer than a free donor head. He has my personal contact info.
I'll be looking through my stash for an extra.
T
Who supplied the guides....?
It's their fault either way, either you supplied them and didn't know they were +, thus failed to bring to their attention or they supplied them.
They would have had to have driven the h3ll out of those just to get them in and should have known something was wrong, not to mention they should have checked the OD vs. the ones they removed.
There's no way I'd attempt to repair that head.
Whadya need.....?
A donor head....?
I should probably have one I'd practically give you just for the fact that every time I pop in here you are fighting some kind of trouble.
Some, I think you'll agree, after being resolved, were self inflicted....
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
Get Spencer to contact me offline if nobody can help you with a better offer than a free donor head. He has my personal contact info.
I'll be looking through my stash for an extra.
T
Thats extremely generous of you, thanks a lot. I really appreciate the gesture, it's things like this that make this community great.
The shop has agreed to fix this 100%, but they are having a hard time locating a casting so I will take you up on that offer. Let me know what you'd like for it and I will relay your paypal info to the shop so that they can pay you.
-Doug
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Thanks for all the help guys! The shop has paypal and has asked me to get a seller in touch with them so they can pay and arrange shipping to the shop. I'm hoping this will all blow over soon and I can get my motor into my car before winter hits.
#28
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Anyway, the shop owner said they are going to weld the crack and sell the head, so they are essentially agreeing to "trade me" for another rebuilt head, and buying me a new HG and nuts/washers for my trouble.
The shop has done good work for me in the past on 944 heads, I think the machinist just F'ed up.
That is there problem in my opinion if they are stuck with a head no 944 owner is going to want to buy.
#29
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Glad you got that sorted out.
Did you break a mirror at the beginning of this project? It seems you keep running into problems! I hope it's all smooth sailing from here man!
I had the same problem happen to me once, where valve guide replacement caused damage to the head casting. But I got lucky and instead of a crack, just a small chunk broke off. Nonetheless, I took it back and they offered to add material by welding, and not knowing any better, I agreed. Well it's been installed and running fine for years. Just a data point.
Did you break a mirror at the beginning of this project? It seems you keep running into problems! I hope it's all smooth sailing from here man!
I had the same problem happen to me once, where valve guide replacement caused damage to the head casting. But I got lucky and instead of a crack, just a small chunk broke off. Nonetheless, I took it back and they offered to add material by welding, and not knowing any better, I agreed. Well it's been installed and running fine for years. Just a data point.
#30
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Glad you got that sorted out.
Did you break a mirror at the beginning of this project? It seems you keep running into problems! I hope it's all smooth sailing from here man!
I had the same problem happen to me once, where valve guide replacement caused damage to the head casting. But I got lucky and instead of a crack, just a small chunk broke off. Nonetheless, I took it back and they offered to add material by welding, and not knowing any better, I agreed. Well it's been installed and running fine for years. Just a data point.
Did you break a mirror at the beginning of this project? It seems you keep running into problems! I hope it's all smooth sailing from here man!
I had the same problem happen to me once, where valve guide replacement caused damage to the head casting. But I got lucky and instead of a crack, just a small chunk broke off. Nonetheless, I took it back and they offered to add material by welding, and not knowing any better, I agreed. Well it's been installed and running fine for years. Just a data point.