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#11 Re: twin turbo ca18det
dattodude Posted on: 2004/11/14 5:01
I saw a dodgy import ca18det that had twin turbos in a car magazine. I think they were Cappucino 600cc turbos.

I don't think there was ever factory twin turbo. Not on a Nissan 4 cylinder.

Prove me wrong, and we can all look at the pictures and be amazed.
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#12 Re: twin turbo ca18det
dattodude Posted on: 2004/11/14 5:08
Quote:
what does a stock CA hit full boost at?
and what does a t28 CA hit full boost at? (being the obvious turbo upgrade)

if putting a t28 on results in lots of lag, i could see the need for going twin to get extra boost up high but keep low rev boost also

if the t28 spools early then there may be no need to go twin

i think i was told yesterday the t28 has the same exhaust housing as a t25 (maybe got it confused), so it would spool at the same time as stock

then theres the fact it's roller bearing so it may even spool earlier?

but then i dont know when a stock spools up at anyway???


The T25 and T28 turbos spool the same, within 500revs. almost no difference. At about 2800rpm. (load dependant).

All of the SR20DET and CA18DET have very similar exhaust housings, 0.63AR T25 flange. Although the T25 has a slightly different dump pipe flange bolt pattern.

A small GT25 turbo is much better than any T28, but I've seen guys use a healthy T28, getting 170kW at the wheels on a CA18DET.

Twin turbo is increasing the points of failure, not worth the effort on a street car, IMHO. It's very hard to justify.
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