Offenhauser intake ?
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Cargo Master
Joined: Sep 2007
Posts: 2,095
Likes: 2
From: Wahpeton ND
I got to wait for a manifold to be priced right. Then I will buy.
Elder User
Joined: Feb 2004
Posts: 830
Likes: 0
From: Indiana
I thought about the water set up too. My intake had been ground on were the water plate would have to hook up. So I went for the hot air type instead. I got most of it done except for the heat shield around the headers. Here's a picture of what I made up. You can't use the stock air cleaner it will interfere with the heater box. I just attached a 4" dryer hose (the aluminum type) too the front of the snorkel and down to the headers. I ran hot air all the time, I could tell it made a difference.
I have a electric fan I want to get installed this summer and it should help with getting more heat into the carb.
I have a electric fan I want to get installed this summer and it should help with getting more heat into the carb.
Fleet Mechanic
Joined: Mar 2004
Posts: 1,529
Likes: 35
From: Kansas
I've got this setup in my garage taking up space.
It came off of an F-600 grain truck with a 360 engine.
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Cargo Master
Joined: Sep 2007
Posts: 2,095
Likes: 2
From: Wahpeton ND
I am going with a 2 barrel setup and have a heated water spacer for it.
I dont know how many of you have been in ND but I have actualy been outside at -41F.
-36F is the coldest temp I had to drive in last year.
I also intend to install a hot air hose to my exhaust manifold to aid in the heating of my fuel/air. But at -20 or less heat is what keeps you alive. Screw performance I just want to get home.
I dont know how many of you have been in ND but I have actualy been outside at -41F.
-36F is the coldest temp I had to drive in last year.
I also intend to install a hot air hose to my exhaust manifold to aid in the heating of my fuel/air. But at -20 or less heat is what keeps you alive. Screw performance I just want to get home.
Tuned
Joined: Nov 2009
Posts: 407
Likes: 0
From: Rochester
Hey I was thinking...kinda scary! But I'm sure someone has thought of this. But could you use the threaded port on the efi manifold I think it's where the egr tube Hooks up. Use that and run braided flex line and hook it up like the coolant hookup on the bottom of the offy intakes? Use hot air? Then just dump it back into the exhaust pipe. Just a thought might be more of a pain then just hooking the coolant lines up.
Thread Starter
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Cargo Master
Joined: Sep 2007
Posts: 2,095
Likes: 2
From: Wahpeton ND
Hey I was thinking...kinda scary! But I'm sure someone has thought of this. But could you use the threaded port on the efi manifold I think it's where the egr tube Hooks up. Use that and run braided flex line and hook it up like the coolant hookup on the bottom of the offy intakes? Use hot air? Then just dump it back into the exhaust pipe. Just a thought might be more of a paint then just hooking the violent lines up.
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Tuned
Joined: Nov 2009
Posts: 407
Likes: 0
From: Rochester
I was thinking you could have a tube going from the exhaust manifold and then have a outlet tube dumping into the other down pipe. Use the same setup as the coolant line hookup. Idk, I was just thinking. I don't know if it would even work. Just though someone could go that way if they dind't want to run the coolant through it and have to worry about leaks.
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Cargo Master
Joined: Sep 2007
Posts: 2,095
Likes: 2
From: Wahpeton ND
Might work? I dont know. I just think you would suffer poor flow if at all. As the gas flowed under the intake it would cool and loose volume. This would cause carbon to buildup in my mind.
They used to use a choke this style back in the 50s and 60s and this is what happened over time.
They used to use a choke this style back in the 50s and 60s and this is what happened over time.
Moderator
Joined: Dec 2007
Posts: 7,987
Likes: 104
From: Boise, Idaho
This'd take a bit of fab work, since yeah, I think the only way to make it work would be to have a continual flow. If it just went straight there, it'd fill up, and hot exhaust would only slowly work it's way in.
However, if someone were to build something that bolted underneath the offy (or stock) intake that had an in and out port, you could have the exhaust exit the EFI manifold through the EGR port, up underneath the intake, and then run back down to the Y pipe. Get an exhaust shop to weld in another O2 sensor port up high (I think the one on the Walker pipe would be way to far away.)
It'd give a loop, and the pressure coming right out of the manifold would push the exhaust in, and the high speed of the exhaust down in the Y-pipe would create a vacuum on the other end that would pull it back out. Give it a nice loop and keep the intake toasty.
However, if someone were to build something that bolted underneath the offy (or stock) intake that had an in and out port, you could have the exhaust exit the EFI manifold through the EGR port, up underneath the intake, and then run back down to the Y pipe. Get an exhaust shop to weld in another O2 sensor port up high (I think the one on the Walker pipe would be way to far away.)
It'd give a loop, and the pressure coming right out of the manifold would push the exhaust in, and the high speed of the exhaust down in the Y-pipe would create a vacuum on the other end that would pull it back out. Give it a nice loop and keep the intake toasty.
Tuned
Joined: Nov 2009
Posts: 407
Likes: 0
From: Rochester
Hey AB that's what I was talking about but u put it into better words! I was thinking u could use the same setup as if u were putting the coolant setup on the bottom of the intake. I might try it and see I'll just weld a nipple in the pipe close up to the y. I've got the piece all made up for the coolant setup. But never put it on cause I had a hairline crack where they stamped the serial number on the bottom of the intake! So went the heated spacer route.
That's skill!
Lead Driver
Joined: Mar 2008
Posts: 7,177
Likes: 377
From: Near Los Angeles
Yeah, and we know they will flow well....
And just to help you out, Flip, we'll even drain them for ya....