Hitachi 18S-2S Hybrid Turbo- Information?

[DeeUnit]

Hey there,

Posting from NZ, currently getting ready to do a RB25det conversion into my 1991 R32 GTST Type M.

Just a few questions. On my current setup, I am running RX7 550cc injectors, and the accompanying turbo, the HT18s-2s.

It hits 12psi @ 4k and rides solidly all the way to 8k, and seems to want to give more. I am going to be using this turbo on the 25det, due to rotaries flowing copious amounts of exhaust gasses and 25dets doing the same, it should in theory work a treat.

Now I am wondering, what boost is this capable of holding? What rwkw should I expect? I am aiming for 250rwkw, with a Walbro fuel pump, FFP, stock injectors and internals, topmount manifold etc. Has anyone ever dealt with this firsthand, or know of someone who has?

I have used the search function to little avail, as it only returned one thread with about 6 posts.

Cheers.

[Ultimategtr]

Not much on the stock injectors. Around 230kw on the stock injectors before they dip into the danger zone.

[zebra]

RB25s dont flow copius amounts of exhaust gasses lol

and why do you want a top mount manifold and a differnt intake manifold for 250kws and an internally gated turbo?

[Bsa]

^ agreed

[DeeUnit]

Not much on the stock injectors. Around 230kw on the stock injectors before they dip into the danger zone.

Looks tidier?

Always appealed to me as opposed to the usual? Thought it was about personal preferance and how I wanted it to look, not based off of performance gains.

I am not familiar with the whole "top mount with an internally gated turbo" thing, it's just what I envisioned.