92dx

iTrader: (2)

Fair warning: This is a fwd Mazda Protege, I does not has a Miat.

Got this turbo and manifold a while back. One of a few different setups I have around that I may run this year. It is SCH20 SS piping and overall looks pretty well built. 1/2" head flange. The turbo side flange is specific to the 1.8 323 gtr turbo flange, though I may end up having it swapped. The manifold was designed it to fit behind the stock radiator, hence the wild wg pipe routing.

My concern is its design may introduce creep or maybe other control issues at the boost levels I want to run. 20-22psi on the gtr turbo that's attached to it (stock ball bearing, 62mm compressor, modified turbine housing for 3" v-band) or a china 2871 I have, as I'm not 100% sure yet the gtr turbo is good. It spins free and no noise, but I need to run it for myself to be happy. Id ask the seller if they had any boost control issues, but I bought it from overseas more than a year ago, and I'm sure I would get the "I didn't have any problems" type of response. I'd run it and see, but this gets me thinking about the plumbing.

The flow to the wg looks questionable. Also, the wg pipe is on the #3 runner, but is pretty close to the flange. I haven't removed the turbo yet in case I decide to run it all as pictured, so the wg pipe may have access to more than only #3. I just haven't looked in through the flange side to see. The screamer pipe, I may eventually switch to recirculate. I imagine that wound make any creep worse?
Thoughts?

18psi

iTrader: (76)

flow aint great but will probably be fine
I'd be way more worried about cracking. cause that's definitely gonna crack