Engine Swap
Thread Starter
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Tuned
Joined: Sep 2013
Posts: 453
Likes: 19
From: Little Rock, AR
@pmuller Is there a way for the machine shop to mill down some 7 degree retainers to be the right ID?
Asking you because you're knowledgeable, but anyone else can throw in. If not, might reach out to a fraternity brother that owns a little salvage yard. Buy a whole Cylinder head. I don't want to, but I can't find anyone who makes these dang things. And my plan for taking them out of the 83 engine isn't gonna work.
Thanks!
Asking you because you're knowledgeable, but anyone else can throw in. If not, might reach out to a fraternity brother that owns a little salvage yard. Buy a whole Cylinder head. I don't want to, but I can't find anyone who makes these dang things. And my plan for taking them out of the 83 engine isn't gonna work.
Thanks!
Thread Starter
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Tuned
Joined: Sep 2013
Posts: 453
Likes: 19
From: Little Rock, AR
Or, going off of @pmuller comment to @jem44357 in the Mushroom Valve thread, does anyone know what the spring pocket measures on 1985 300 I6? Would I have to have them milled out to fit the 942 springs? The 942 are 1.437" vs 1.4" OD with the 903s.
I am sure I can get Summit to swap me out if I pay the difference and buy the retainers and stuff from them.
Here was my chat with Comp:
I am sure I can get Summit to swap me out if I pay the difference and buy the retainers and stuff from them.
Here was my chat with Comp:
Johnathan Martin: Hi Christopher. How can i help you?
Christopher: I chatted with someone last week about my 1985 Ford 300 I6 engine. I am having a difficult time getting retainers that will work. The engine originally had rotators on the exhaust side. All of the springs that came with my kit are the same height. Meaning I have been told that the exhaust rotator style will not work. The gentleman I chatted with said there was no offering from Comp that will replace what was there. None of the retainers offered match the ID of the spring. Someone else suggested that I use a Comp 942 spring. Would this be a possibility?
Christopher: Hi Johnathan, I think it was you and I that chatted last week about this!
Johnathan Martin: As long as you you have enough spring pocket for the spring to fit in, then yes, they should work fine.
Christopher: Hm. I can check with the machine shop. I can't seem to find a spec for that on a quick search. No issues with the higher spring pressure on the 942? I don't know much about cylinder head jazz, so I am trying to get the best solution possible.
Johnathan Martin: That spring has a little more spring pressure and more than what is necessary, but will work fine.
Christopher: Ok, great. So pretty much the only thing to watch for is the spring pocket? Everything else is good?
Johnathan Martin: That would be the only thing I would be worried about checking here. Everything else would be fine.
Christopher: If I went that route, I would be able to use the Comp 768 retainer, I believe. And then would need to verify whether or not my 601-12 valve locks would work too. I assume they would, since they mate to the valve, but, if not, what valve locks would I run with the 942 springs, 768 retainers?
Johnathan Martin: Yes, those would all work together just fine.
Christopher: Great, I appreciate your help once again.
Christopher: I chatted with someone last week about my 1985 Ford 300 I6 engine. I am having a difficult time getting retainers that will work. The engine originally had rotators on the exhaust side. All of the springs that came with my kit are the same height. Meaning I have been told that the exhaust rotator style will not work. The gentleman I chatted with said there was no offering from Comp that will replace what was there. None of the retainers offered match the ID of the spring. Someone else suggested that I use a Comp 942 spring. Would this be a possibility?
Christopher: Hi Johnathan, I think it was you and I that chatted last week about this!
Johnathan Martin: As long as you you have enough spring pocket for the spring to fit in, then yes, they should work fine.
Christopher: Hm. I can check with the machine shop. I can't seem to find a spec for that on a quick search. No issues with the higher spring pressure on the 942? I don't know much about cylinder head jazz, so I am trying to get the best solution possible.
Johnathan Martin: That spring has a little more spring pressure and more than what is necessary, but will work fine.
Christopher: Ok, great. So pretty much the only thing to watch for is the spring pocket? Everything else is good?
Johnathan Martin: That would be the only thing I would be worried about checking here. Everything else would be fine.
Christopher: If I went that route, I would be able to use the Comp 768 retainer, I believe. And then would need to verify whether or not my 601-12 valve locks would work too. I assume they would, since they mate to the valve, but, if not, what valve locks would I run with the 942 springs, 768 retainers?
Johnathan Martin: Yes, those would all work together just fine.
Christopher: Great, I appreciate your help once again.
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