HKS Cast manifold users - what wastegate are you using?
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Joined: Aug 2001
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From: Santa Monica, CA
HKS Cast manifold users - what wastegate are you using?
Apparently HKS no longer makes their Standard wastegate, and I am loathe to spend $6-700 on their racing gate. What wastegates are you guys using on this manifold? Do any of the tials/turbonetics/etc fit on this flange? I would rather not get it cut and welded if I can avoid it.
Thanks in advance
Thanks in advance
Joined: Mar 2001
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From: https://www2.mazda.com/en/100th/
Apparently HKS no longer makes their Standard wastegate, and I am loathe to spend $6-700 on their racing gate. What wastegates are you guys using on this manifold? Do any of the tials/turbonetics/etc fit on this flange? I would rather not get it cut and welded if I can avoid it.
Thanks in advance
Thanks in advance
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thats weird, my hks 40 has not crept on me yet. i also haven't driven it when it was really cold out yet, the coldest it has been is in the 50's. when it was warm out it held boost consistently.
^ it may depend on your spring pressure. You can also detect small amounts of boost creep if you datalog a lot of pulls under different ambient conditions. You will see a little creep in the boost curve at the end.
anyone know if this HKS --> Tial adapter flange from ATP will work?

"Adapter Flange, Allows [Tial] 46mm wastegate to be used with HKS Flanged Manifolds, Adapter bolts onto the 46mm wastegate using 4 countersunk allen bolts (8mm x 1.25 pitch) and has 4 tapped holes on adapter to bolt to HKS flanged manifold using studs and nuts (8mm x 1.25 thread). HKS manifold must have bolt pattern of 2-3/16" bolt-center to bolt-center spacing for side to side adjacent hole measurement and 3" bolt-center to bolt-center spacing for diagonal holes."

"Adapter Flange, Allows [Tial] 46mm wastegate to be used with HKS Flanged Manifolds, Adapter bolts onto the 46mm wastegate using 4 countersunk allen bolts (8mm x 1.25 pitch) and has 4 tapped holes on adapter to bolt to HKS flanged manifold using studs and nuts (8mm x 1.25 thread). HKS manifold must have bolt pattern of 2-3/16" bolt-center to bolt-center spacing for side to side adjacent hole measurement and 3" bolt-center to bolt-center spacing for diagonal holes."
Last edited by arghx; Oct 22, 2008 at 05:49 AM.
I've used a Tial 44 on a couple and a Tial 38 on another. Easy enough to make adapters out of steel. Pic below of the 38 adapter. I have an FD HKS manifold, Tial 44, and adapter FS if anyone is interested.
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