Need suggestions for building a turbo mainfold
Thread Starter
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From: Cecil County, MD
Need suggestions for building a turbo mainfold I could use some input on this one guys. I just got my T-76 today and I'm ready to tackle building the manifold for it. I'm going to put it on the drivers side (in my Chevy II) up around the front of the valve cover.
I'm going to go with a log style, and I'm planning on using 16ga. t-304 stainless to make it out of. Should I use a 2 1/2" log or 3"? should I go with 1 3/4" primarys? Those are my 2 main questions right now. I'm getting really pumped to get this project going!!
Here is the car and the engine bay
[image]
http://benchseatracin.smugmug.com/photos/155838/155838-Medium.jpg[/image]
I'm going to go with a log style, and I'm planning on using 16ga. t-304 stainless to make it out of. Should I use a 2 1/2" log or 3"? should I go with 1 3/4" primarys? Those are my 2 main questions right now. I'm getting really pumped to get this project going!!
Here is the car and the engine bay
[image]
http://benchseatracin.smugmug.com/photos/155838/155838-Medium.jpg[/image]
Thread Starter
9 Second Club
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Joined: Aug 2002
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From: Cecil County, MD
Re: Need suggestions for building a turbo mainfold Sorry I didn't clarify. I do mean exhaust manifold. I talked to a tech a Burns stainless today and he said he would use 304. He seems to think my exhaust temperatures won't go much over 1400* so 304 would be fine.
I think that I might as well spend the extra couple of dollars and get the 321, that way I won't have to worry about it.
Do you think I should make my crossover pipe from stainless also. I was going to use regular mild steel 2 1/2" pipe.
The pic of the motor never showed up, here goes
I think that I might as well spend the extra couple of dollars and get the 321, that way I won't have to worry about it.
Do you think I should make my crossover pipe from stainless also. I was going to use regular mild steel 2 1/2" pipe.
The pic of the motor never showed up, here goes
FormerVendor
Joined: Dec 2001
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From: WWW.SPEEDINC.COM
Re: Need suggestions for building a turbo mainfold FWIW, I used 16 gauge mild steel for my turbo headers (and they were coated), and it's been holding up good so far.
Alot of the Mustang turbo kit manufacturers recommend mild steel for a street/strip car because it is less likely to crack.
Alot of the Mustang turbo kit manufacturers recommend mild steel for a street/strip car because it is less likely to crack.
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Joined: Nov 2001
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From: Indianapolis, IN
Re: Need suggestions for building a turbo mainfold The bigger the log the better. You have plenty of room to make two tubular headers which would flow a lot better than a log on one side with a crossover feeding it.
But if you are dead set, I agree with chris. 3".
And a 2 1/2" stainless crossover will work fine.
Good luck! Thats a VERY nice looking car.
But if you are dead set, I agree with chris. 3".
And a 2 1/2" stainless crossover will work fine.
Good luck! Thats a VERY nice looking car.
Re: Need suggestions for building a turbo mainfold Mild Steel is perfectly fine, just get it coated so it will hold the heat in good. Stainless tends to crack from expansion. Most cars need rewelding done form 6 mos to a year, depending how much the car is run. For a street car definetly go mild steel, just get them ceramic coated.
