Offenhauser intakes
Postmaster
Joined: Nov 2012
Posts: 2,806
Likes: 8
From: Langley, BC
Here's a thread about it. It's actually a sticky in this forum. Why your intake manifold requires heat.
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Fleet Mechanic
Joined: Aug 2008
Posts: 1,446
Likes: 9
From: NE Iowa JD Country
I appreciate the effort folks. Yes, I have read the "sticky"...I understand the importance. My question is more about the finer details of how it get s done
I was prompting those who have already plumbed coolant to the under side of their Offy "C" series intake and hopefully show or discribe where the porting is placed....in the shallow end (outward )or the deeper end ( nearer the engine).
I chatted with Offenhauser and they were not very receptive to the idea of plumbing coolant there.
I was prompting those who have already plumbed coolant to the under side of their Offy "C" series intake and hopefully show or discribe where the porting is placed....in the shallow end (outward )or the deeper end ( nearer the engine).
I chatted with Offenhauser and they were not very receptive to the idea of plumbing coolant there.
Last edited by enriched&beyound; Oct 10, 2014 at 04:16 PM. Reason: better info
Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
Offenhauser's attitude might be because the manifold was designed to work with the stock log exhaust manifold. But most of the folks are using EFI exhaust manifolds and some use headers and neither have the necessary configuration to hook up like the stock exhaust manifold does.
The plumbing is easy with a plate to cover the cavity that is plumbed with two hose fittings...water in, water out and it works by splicing it inline with one of the heater hoses...really quite simple.
The plumbing is easy with a plate to cover the cavity that is plumbed with two hose fittings...water in, water out and it works by splicing it inline with one of the heater hoses...really quite simple.
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Fleet Mechanic
Joined: Aug 2008
Posts: 1,446
Likes: 9
From: NE Iowa JD Country
Offenhauser's attitude might be because the manifold was designed to work with the stock log exhaust manifold. But most of the folks are using EFI exhaust manifolds and some use headers and neither have the necessary configuration to hook up like the stock exhaust manifold does.
The plumbing is easy with a plate to cover the cavity that is plumbed with two hose fittings...water in, water out and it works by splicing it inline with one of the heater hoses...really quite simple.
The plumbing is easy with a plate to cover the cavity that is plumbed with two hose fittings...water in, water out and it works by splicing it inline with one of the heater hoses...really quite simple.
and from the few Pictures on the last page....most seem to run the porting left to right (orientating to the engine) ...so that makes one port to the deeper side of the intake and one to the shallower side.
Some of my dilemma was what size to use 1/2" or 3/8"?? looks like 3/8" is the choice?
My intention is to use a 1" thick alum block ( leftovers from work)...& maybe make a sightly deeper cavity and perhapes better cooling compassity. With the thicker block then affords the ability to machine porting on the side and eliminate the need for the 90 degree elbows
Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
Sounds like you are heading in the right direction. Please post pics of the plate you are making when it's done!
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Lead Driver
Joined: Jul 2009
Posts: 6,477
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From: Sheffield, AL
After some refined "searching" I found >>https://www.ford-trucks.com/forums/1...g-plate-4.html
and from the few Pictures on the last page....most seem to run the porting left to right (orientating to the engine) ...so that makes one port to the deeper side of the intake and one to the shallower side.
Some of my dilemma was what size to use 1/2" or 3/8"?? looks like 3/8" is the choice?
My intention is to use a 1" thick alum block ( leftovers from work)...& maybe make a sightly deeper cavity and perhapes better cooling compassity. With the thicker block then affords the ability to machine porting on the side and eliminate the need for the 90 degree elbows
and from the few Pictures on the last page....most seem to run the porting left to right (orientating to the engine) ...so that makes one port to the deeper side of the intake and one to the shallower side.
Some of my dilemma was what size to use 1/2" or 3/8"?? looks like 3/8" is the choice?
My intention is to use a 1" thick alum block ( leftovers from work)...& maybe make a sightly deeper cavity and perhapes better cooling compassity. With the thicker block then affords the ability to machine porting on the side and eliminate the need for the 90 degree elbows
That is a great idea! Bravo!!
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Fleet Mechanic
Joined: Aug 2008
Posts: 1,446
Likes: 9
From: NE Iowa JD Country
the test fit of intake and headers for us had plenty of room for most any kind of block for coolant.
what brand of header are you running?
