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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 09-08-2008, 09:59 PM   #1
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Default flange anyone?

Ok i just orderded my BP manifold today, and the welder needs a good exhaust flange. i used the search feature and came up with

http://weirtech.ca/
which has mild steel 3/8 flange

http://www.etdracing.com/flanges.html
mild steel but no idea on thickniess?? any one know??

and
http://www.jgstools.com/turbo/mx5bp.html
i was told to stay away from there flange poor round to oval design.

is there any other componys who make flanges? has anyone had any experience with them? the welder wants a 1/2 flange and i think he said it would be better in mild any opinions?

Thanks
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Old 09-09-2008, 02:04 AM   #2
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just stick with wier, you'll be fine with 3/8's
ask the welder to brace the flange, maybe bolt it down to your stock manifold while welding, and have him weld short 1'' lines at a time and you don't have to worry about warping
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Old 09-09-2008, 03:10 PM   #3
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For some reason I'm having a similar issue. For a mild flange I'd recommend Wier. Good guy, and he'll take care of you. I just wish my welder would agree to use a mild flange.
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Old 09-09-2008, 06:49 PM   #4
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Quote:
Originally Posted by Hot_Wheels View Post
Ok i just orderded my BP manifold today, and the welder needs a good exhaust flange. i used the search feature and came up with

http://weirtech.ca/
which has mild steel 3/8 flange

http://www.etdracing.com/flanges.html
mild steel but no idea on thickniess?? any one know??

and
http://www.jgstools.com/turbo/mx5bp.html
i was told to stay away from there flange poor round to oval design.

is there any other componys who make flanges? has anyone had any experience with them? the welder wants a 1/2 flange and i think he said it would be better in mild any opinions?

Thanks
Edit: I missed that the OP is looking for a BP flange. This is a B6 flange. I'll leave it here for future reference.

Full-race.com

Head flange for 92-93 Mazda Miata motors. Laser cut from 1/2" 1018 Mild Steel. $50.00


Last edited by JKav; 09-09-2008 at 07:10 PM.
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Old 09-09-2008, 06:55 PM   #5
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Uh, you do know the difference between the B6 and the BP, right?
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Old 09-09-2008, 07:08 PM   #6
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No, I've never heard of either of them.

I missed the BP part.
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Old 09-09-2008, 10:17 PM   #7
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my ETD manifold has a 1/2" flange. presumably their flanges are also 1/2".

http://jgsturbo.com/index2.html has half inch flanges. $78.50
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Old 09-09-2008, 11:42 PM   #8
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Maybe you can get Aaron (wier) to make a one of 1/2" if thats big of a deal.
Or just use the 3/8".
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Old 09-10-2008, 03:07 AM   #9
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doe doe doe people on other boards where saying "3/8 is more then enoguh" i rather go thicker to, i did order the weir one today but maybe ill odred the etd if i can verify that it is a 1/2 in i rather have thicker neukin is building my manifold.
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Old 09-10-2008, 09:14 AM   #10
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To the OP: Go with the Weir for flanges.

Quote:
Originally Posted by skidude108 View Post
For some reason I'm having a similar issue. For a mild flange I'd recommend Wier. Good guy, and he'll take care of you. I just wish my welder would agree to use a mild flange.
I will weld a mild steel flange to your stainless primaries.
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Old 09-10-2008, 09:18 AM   #11
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Quote:
Originally Posted by Hot_Wheels View Post
doe doe doe people on other boards where saying "3/8 is more then enoguh" i rather go thicker to, i did order the weir one today but maybe ill odred the etd if i can verify that it is a 1/2 in i rather have thicker neukin is building my manifold.
The way I sometimes think about it (maybe incorrectly) is that the thinner 3/8 flange is closer in cross section to the pipe you are welding to it, so you have more even penetration of the weld, and it's just easier to weld if you're new at it.
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Old 09-10-2008, 01:52 PM   #12
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ok i called etd today and at first the guy said there 3/8 and i asked him to check (he wasnt happy) but it turns out the b6 is 3/8 and the bp is 1/2!! so i ordered that one so now i will have the weir one as a paper weight and the etd for te manifold
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