Manifold Flange
#1
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Manifold Flange
All you guys who make your own turbo manifolds out of weld els, what do you use for the flange on the engine side? Do you re-use the one from the stock headers, or do you buy one, or do you make one?
Short story: I need an exhaust flange, what's the easiest/cheapest way to get one that doesn't suck?
Short story: I need an exhaust flange, what's the easiest/cheapest way to get one that doesn't suck?
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I used WeirTech on my last 2 manifolds. Very nice flanges. Much cheaper than ETD. I've never tried the JGS. I don't like the round-to-oval machining they do, I prefer to make the weld-el oval with a press instead. But if I didn't have a press then I'd probably run the JGS flange.
And I do not know of a source for stainless head flanges unfortunately. From what I found the general concensus (sp?) from "experts" on the internet was that mild flanges are ok if you use the correct filler wire (type 309). I have not tried it yet; my stainless manifold is done except for the head flange, I am waiting to make up my own mind. My very first manifold used a stainless ETD flange and I had no issues with it at all; they no longer make them.
I may have one of the prototype machinists at my work make a stainless flange, or I may decide to use the Weirtech mild flange and try to find someone I trust to test it.
And I do not know of a source for stainless head flanges unfortunately. From what I found the general concensus (sp?) from "experts" on the internet was that mild flanges are ok if you use the correct filler wire (type 309). I have not tried it yet; my stainless manifold is done except for the head flange, I am waiting to make up my own mind. My very first manifold used a stainless ETD flange and I had no issues with it at all; they no longer make them.
I may have one of the prototype machinists at my work make a stainless flange, or I may decide to use the Weirtech mild flange and try to find someone I trust to test it.
#10
tim,
the ms bp and b6t flanges are $22 each. i'm doing a set of headers for a v8 toyota right now, and they are the first i've done with ss flanges. i've sold ms flanges to many many fabricators across the US and they never seem to have any problems. actually, the mild steel flanges have less tendency to warp than stainless. i myself have made probably close to 50 manifolds and almost as many downpipes with ms flanges and 304ss schedule 10 piping without an issue, from bmw's to hondas, to fords and mazdas to bike headers with 16g tubing.
the ms bp and b6t flanges are $22 each. i'm doing a set of headers for a v8 toyota right now, and they are the first i've done with ss flanges. i've sold ms flanges to many many fabricators across the US and they never seem to have any problems. actually, the mild steel flanges have less tendency to warp than stainless. i myself have made probably close to 50 manifolds and almost as many downpipes with ms flanges and 304ss schedule 10 piping without an issue, from bmw's to hondas, to fords and mazdas to bike headers with 16g tubing.
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Ok, now I'm back where I started. Aaron at Weirtech sent me a stainless flange but canada post lost it and he doesn't have any more in stock.
With any luck, Weirtech will have another soon and I will have it before my next install day, but from talking with him it doesn't look good.
I'm going to talk to ETD but I don't have high hopes on them either.
I just wish my friend weren't so stubborn about using a stainless one. Sounds like the mild steel ones don't have any problems, my friend just refuses to use any mild steel on this project and he's the one doing the welding.
With any luck, Weirtech will have another soon and I will have it before my next install day, but from talking with him it doesn't look good.
I'm going to talk to ETD but I don't have high hopes on them either.
I just wish my friend weren't so stubborn about using a stainless one. Sounds like the mild steel ones don't have any problems, my friend just refuses to use any mild steel on this project and he's the one doing the welding.
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