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FE Power Forums => Non-FE Discussion Forum => Topic started by: bsprowl on April 18, 2023, 09:38:43 PM

Title: Need Offy Tunnel Port intake manifold bolts and gaskets
Post by: bsprowl on April 18, 2023, 09:38:43 PM

I purchased a Cleveland Offy tunnel port intake top use with Jay's adapter.  When I got it I discovered that it didn't include the bolts (or gaskets) to fasten the top to the base.  Their web site is poor (at best) and I haven't been able to register to ask if the gaskets (part number 5936 or 5938) are available.  This is not a big deal if they are not, as I can make gaskets.

The bolts are a bit of a problem.  Seems that 1" is too long to fit and 3/4" only given me two turns before they make contact and I'm concerned because two threads seems awfully short in aluminum.  Will someone check their intake and give me the bolt length. 

Thanks

Title: Re: Need Offy Tunnel Port intake manifold bolts and gaskets
Post by: FrozenMerc on April 19, 2023, 02:33:08 PM

I can't help you with much other than to say that 7/8" long bolts are readily available through places like McMaster-Carr in a wide variety of sizes, materials, and styles.

https://www.mcmaster.com/products/screws/length~7-8-2/alloy-steel-socket-head-screws-8/ (https://www.mcmaster.com/products/screws/length~7-8-2/alloy-steel-socket-head-screws-8/)

Title: Re: Need Offy Tunnel Port intake manifold bolts and gaskets
Post by: thatdarncat on April 19, 2023, 05:10:16 PM

I have an Offy 351C Tunnel Ram Intake, mine uses studs to fasten the top to the base, with just a washer & nut, not a bolt. Maybe that could solve your issue? Here’s a picture.

(https://i.postimg.cc/tJwQnVry/F1-F4-BD92-B9-BD-448-D-95-D8-A63-A35-C8-A9-C0.jpg) (https://postimg.cc/RJ7bjq5b)

Title: Re: Need Offy Tunnel Port intake manifold bolts and gaskets
Post by: bsprowl on April 19, 2023, 07:57:55 PM

Studs - why didn't I think of that.  Perfect solution...
Thanks

Title: Re: Need Offy Tunnel Port intake manifold bolts and gaskets
Post by: Falcon67 on April 20, 2023, 11:35:45 AM

I have two Wieand intakes (302 and 351C) and I made studs from all-thread for both top mounts. 

Title: Re: Need Offy Tunnel Port intake manifold bolts and gaskets
Post by: Joe-JDC on April 20, 2023, 11:44:57 AM

I think you will find the carb studs for mounting a carb flat on the manifold will work.  That is what came in my TR box from Summit.  Joe-JDC