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Old 06-08-2011, 05:39 PM   #1
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Default Need Turbo Head Flange

Hello everyone, I did an extensive search and couldn't find any useful info on where I might find a Miata Head Flange. I am making my own Turbo Manifold and have yet to find a source for the head flange for a second gen 1.8 miata engine. Thanks in advance, any and all helpful info is greatly appreciated.
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Old 06-08-2011, 07:50 PM   #2
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http://www.absurdflow.com/flanges.html

weirtech if you like **** in your welds.
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Old 06-09-2011, 04:46 AM   #3
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if the head flanges are the same for all BPs you could get an escort gt header manifold and cut the pipes off it to use the flange... thats what im using and ive had no problems so far.
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Old 06-09-2011, 08:33 AM   #4
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You could also find a chunk of metal somewhere on the side of the road and cut out the holes and ports with a dremel. It all depends on how much your time is worth.
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Old 07-16-2011, 01:10 AM   #5
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Dragging this back up to see if anyone knows a source for a pre-cut head flange for a 1.6L? Tim, do you make one?
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Old 07-16-2011, 01:18 AM   #6
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If you have a cad drawing of it I could get some made.
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Old 07-16-2011, 01:26 AM   #7
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JGS Precision Turbo sells BP and B6 flanges. The ones in the previous post look nicer, FWIW
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Old 07-16-2011, 01:37 AM   #8
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Sorry, I meant to include I'm looking for stainless (SS304 specifically), I found the mild steel ones at JGS Precision.

And if I had all the dimensions, I could get one cut too... was looking to save the trouble of measuring it all up...
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Old 07-20-2011, 05:36 PM   #9
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Quote:
Originally Posted by Rara View Post
Dragging this back up to see if anyone knows a source for a pre-cut head flange for a 1.6L? Tim, do you make one?
No sorry, I don't.
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Old 08-17-2011, 02:07 PM   #10
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I'd always use mild steel. I've found stainless usually warps and you have to get the manifold decked to get it to seal to the head.
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Old 08-19-2011, 10:46 AM   #11
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vibrant also sells head flanges for 1.6s and 1.8s.
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Old 08-19-2011, 11:21 AM   #12
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Quote:
Originally Posted by natedawg View Post
I'd always use mild steel. I've found stainless usually warps and you have to get the manifold decked to get it to seal to the head.
you can "deck" a manifold with a large industrial belt sander with the proper belt for metal. not a home handheld belt sander PS.

any shop should be able to do this cheaply.


Its more of the fact that when the manifold gets red from driving, and then cools down again it will warp more than steel.
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