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post #1 of (permalink) Old 10-26-2002, 11:08 PM
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Offy intake and header .......... problem

Ok I think I have got a pretty good illustration to accompany this post. I have a Offenhauser 4 bbl intake manifold and a set of headers that came with the motor which is a 4.2L 258. The motor is completely rebuilt and I was adding the headers and the intake I have no mounting hardware with either and the problem is the depth between the header and the intake are different. Has anyone got this setup and what did you do to fasten the intake and header to the head? Is there a special adapter? I would appreciate any help? Please see the attachment The arrows point to the areas of problem.
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File Type: jpg 928426-jeep 001.jpg (45.0 KB, 33 views)
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post #2 of (permalink) Old 10-27-2002, 02:37 AM
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Re: Offy intake and header .......... problem

I really need some help here PLEASE!!!
post #3 of (permalink) Old 10-27-2002, 12:21 PM
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Re: Offy intake and header .......... problem

i think the bolts use sleeves to fix that, cant remember, i had a clifford on my first 78 and i think that is how it worked.

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post #4 of (permalink) Old 10-27-2002, 04:09 PM
 
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Re: Offy intake and header .......... problem

A friend of mine had the same problem when he did a mix and match intake / exhaust system on his 258. He doubled up on the intake gasket, and that gave him the extra 1/16" to make the two parts line up.
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post #5 of (permalink) Old 10-27-2002, 09:29 PM
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Re: Offy intake and header .......... problem

If I double up on the intake gasket it will put the intake even further away from the header. I am considering just to mig a half washer to the header to take care of the difference in thickness. What do you guys think is that the way to go?
post #6 of (permalink) Old 10-28-2002, 07:22 AM
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Re: Offy intake and header .......... problem

I had the same setup, though now I am working on the 4.0 head with the same intake.
Did you buy the header used? Mine came with a set of sleeves that fit over the bolts and had a spacer welded to them to hold the header. See the attached pic, sorry for the quality (or lack thereof) of the drawing.
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post #7 of (permalink) Old 10-28-2002, 07:36 AM
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Re: Offy intake and header .......... problem

yeah, that's what i was thinking of :-) i knew i wasn't crazy

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