Daniel,
I'm not sure than I agree that the same theory can be applied to the Z18,
because remember the CA is a 16 valve head and will flow much better at high
rpm, so I doubt we would get the same results with the 8 valve NAPS/Z heads
unfortunately
Again the white circuit racer (it must be my favourite Z18 car or something
:)- it produces peak power at 7000rpm with linished crank, stock rods, stock
rockers, 125lb springs..... (same bottom end as a L18) Whether or not you
want peak power at 7000rpm is another story hehe
I still reckon the roller bearing RB turbo would probably not be the best
bang for buck though. as it will cost a lot lot more than a older VG T3.
The r/b turbo is obviously better for the long run though so if you got the
cash then spend it for sure!!
We need somebody who has a stock cam and a Fury copy and before/after dyno
sheets hey :) Wade do a Fury copy so I might have to ring and ask their
opinion unless any other listers have some more info?
Anyway enough ranting from me :)
- Tom
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Daniel Kroehn
Sent: Tuesday, 20 February 2001 6:50 PM
To: [EMAIL PROTECTED]
Subject: Re: Z18 turbo (was RE: Turbo'd L series (my s4 rx7 turbo))
The one off the RB25det is ball bearing from memory and according to the
zoom tests it spools up and is producing about 1 bar of pressure at about
5000rpm on the CA18det. The T3 however is non ball bearing and they reckon
that on the CA, the T3 starts to produce good power from 4000 rpm all the
way up to 8000rpm. If I'm not mistaken a standard z18et is only good up
until a bit over 6000. May have to invest in a turbo cam as well to make
use of this? Anyway that was my reasoning behind the one off the RB rather
than the T3 from the VG30det.
Daniel Kroehn
Recommending Datrats, supplying quality Datsun performance parts
www.Datrats.com.au
----- Original Message -----
From: Tom Richardson <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, February 20, 2001 2:17 PM
Subject: Re: Z18 turbo (was RE: Turbo'd L series (my s4 rx7 turbo))
> Daniel,
>
> The CA has a T2 style flange so you will definately need a custom manifold
> to use one of these. In my humble opinion, one of the best turbos to use
on
> a ~2L four would have to be the cheap and cheerful ex-CA18/SR20 T25 or
T28,
> they ought to be quite plentiful (I should think more so than RB turbos)
> because of the number of S13 & S14 (& S15!?) owners chasing more power via
> larger turbos. The ball bearing T28 (late S14) apparently flows enough
for
> approx 170kw-180kw at the wheels- is this enough for you? If not (!) then
I
> agree- go for the big gun RB25DET unit! Is this a ball bearing RB25
turbo?
> Sounds like low end response might be a little weak with a normal turbo
this
> big on a 1.8L? Also, I thought the (R33) RB25 turbo was a T03?
>
> I picked up a stock Z18ET manifold for $50, so I will be running a T3
sized
> turbo on my Z20ET. One possibility is the T3 from a VG30ET, it should be
> plenty big enough for a 2L! Easy to find and cheap too, hopefully. I
doubt
> the stock manifold will pose that much of a restriction, because with the
> relatively high N/A compression ratio I will only be able to run around
6-7
> psi of boost..... bring on the 29mm forgies :)
>
> - Tom
>
> PS Are you planning to keep the standard camshaft or use something like a
> Fury copy? Any thoughts on the gains available from such a change Daniel
(&
> list)?
>
> ----- Original Message -----
> From: "Daniel Kroehn" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, February 20, 2001 1:09 PM
> Subject: Re: Z18 turbo (was RE: Turbo'd L series (my s4 rx7 turbo))
>
>
> > I don't know about modifying the cylinder head and intake jsut yet, but
I
> > plan to in the future. As for turbo's I want to use the turbo attached
to
> > the Nissan RB25. It's produces the same power as a T3 but comes on a
bit
> > earlier in the rev range, so that might be the go. Check out the latest
> > zoom, it has a good tech article on the CA18det and appropriate turbo
> > upgrades!
> >
> > Daniel Kroehn
> > Recommending Datrats, supplying quality Datsun performance parts
> > www.Datrats.com.au
>
--membersozdat-------------------------------------------------------
OZDAT Mailing List Please Note:-
Send (un)subscribe requests to [EMAIL PROTECTED]
Send submissions to [EMAIL PROTECTED]
No unauthorised redistribution of this email
http://www.ozdat.com/ozdatonline/index.htm
http://www.ozdat.com/ozdatonline/listindex.html
http://www.mail-archive.com/[email protected]/
---------------------------------------------------------------------
