You would be suprised out how well the little CA18det's like to rev although the one ive been playing with lately is being limited to 8000rpm.They are also quite strong in standard form and with a set of forged pistons will cop a lot of abuse.Anyone that put a 600-700hp turbo on one is just plain mad.We have been using a t25g with a 48mm comp wheel using the .64a/r turbine and the .8a/r comp although the turbine wheel is slightly smaller than the GTiR one the comp wheel is bigger.This one is using a 15psi actuator and is making over 230rwhp and is certainly drivable.The owner is fitting a 75hp nos kit this week which will go well having a nice responsive engine with a bit more punch at the flick of a switch. vu thai wrote:
> well obviously, the CA18 is stock internal and i will not think the factory > ECU or any one would be silly enough to rev way over the factory redline > limits unless they have serious internal, any even if he did, i would not > think that he would want some think this small and restrictive, he would > want some big bertha that can punch some 600-700 hp, what you are mention is > a drag car setup and is not street drivable, even though u could but it will > run like dogs, but until boost come in, the car will be uncontrolable or > very hard to. Have you driven one, cos i have. > > >From: andrew smith <[EMAIL PROTECTED]> > >Reply-To: [EMAIL PROTECTED] > >To: [EMAIL PROTECTED] > >Subject: Re: t28 turbo boost > >Date: Tue, 10 Dec 2002 22:59:41 +0800 > > > >This 1/3 of rpm boost theory is something you would expect from a factory > >setup.Many high performance turbo setups will boost much later.For example > >most > >of the 10sec skylines you see dont boost until over 5000rpm and redline > >around > >9000rpm.With the ca18det being a bit smaller than the sr20det they can take > >a > >bit more rpm to boost the larger turbo from the GTiR which has a turbine > >a/r of > >.86 which is quite a bit bigger than the standard .49 from the ca18det.The > >compressor also has a larger a/r of .6 compared to .48 from the > >ca18det.Combine > >this with larger comp and turbine wheels and you are going to get some lag > >increase.If you were to be running consistently high boost level of around > >20psi > >then i would probably live with the extra lag as these turbos can flow some > >air > >thru them at this level.But if you were to only run say 15psi or less then > >you > >would probably be better off going for the .64 a/r turbine housing off a > >s13 > >sr20det.This would help to spool things up a little quicker.Some people > >even use > >the small .49a/r turbine housings from the ca18det on the larger turbo but > >ive > >never tried this.Creating a volume in the actuator line can help to spool > >things > >a bit quicker as can a 15psi actuator and a gated bleed valve.Its always a > >good > >idea to cheek for wastegate creep on a dyno under load conditions.ive seen > >some > >turbos that wont boost above 15psi simply becuase the back pressure has > >reached > >7psi and just forces open the 7psi actuator. > > > >vu thai wrote: > > > > > by the way u guys descibing how the turbo should work, it's obvious that > >u > > > guy have a very general knowledge about turbo, let me tell u guys that, > >for > > > the turbo to work to it's max efficiency, it's needs to be spooling or > > > making boost by 1/3 of it's redline, eg. redline 7,500 rpm, then boost > > > should be making at around 2,500 rpm. so i assume you tap the wastegate > > > actuator of right at the compressor, that's why boost come in at 4,000. > >now > > > the GTIR making boost at 2500rpm is because the wastegate actuator are > > > control by the car management system, so for you to achieve the same > >boost > > > response, you needs to tap the wastegate actuator of the intercooler > >piping > > > at around near the throttle body, if you desire extra punch at boost > >kicking > > > in, then try to extend the hose to about 2-2.5 metres long and you > >should > > > have some fun. any too much info at the moment, i'll let you guys know > >some > > > more details as i read your mail. > > > > > > >From: "Mark O'Conner" <[EMAIL PROTECTED]> > > > >Reply-To: [EMAIL PROTECTED] > > > >To: <[EMAIL PROTECTED]> > > > >Subject: Re: t28 turbo boost > > > >Date: Tue, 10 Dec 2002 17:58:26 +1100 > > > > > > > >BlankNot sure - will have to check. > > > > > > > >about 3,000 rpm it starts. > > > > ----- Original Message ----- > > > > From: Cleary Signs > > > > To: [EMAIL PROTECTED] > > > > Sent: Tuesday, December 10, 2002 5:32 PM > > > > Subject: Re: t28 turbo boost > > > > > > > > > > > > is the front AR .68 or rear, > > > > should have a .8 front? > > > > does it start making boost around the 2500-3000 > > > > > > > > Heath > > > > ----- Original Message ----- > > > > From: Mark O'Conner > > > > To: [EMAIL PROTECTED] > > > > Sent: Tuesday, December 10, 2002 1:07 PM > > > > Subject: Re: t28 turbo boost > > > > > > > > > > > > 0.68AR I believe. > > > > > > > > It is running 12psi at present. > > > > > > > > Comes on slowly then hits 4,000 rpm and bang - then it goes! > > > > > > > > ----- Original Message ----- > > > > From: Cleary Signs > > > > To: [EMAIL PROTECTED] > > > > Sent: Tuesday, December 10, 2002 1:53 PM > > > > Subject: Re: t28 turbo boost > > > > > > > > > > > > Mark, what;s the A/R's on your T28 off, > > > > if it hasn't redone (stocko), run max 14psi, very safe and works > > > >well at this boost. > > > > > > > > Heath > > > > > > > > ----- Original Message ----- > > > > From: Mark O'Conner > > > > To: [EMAIL PROTECTED] > > > > Sent: Tuesday, December 10, 2002 9:57 AM > > > > Subject: t28 turbo boost > > > > > > > > > > > > Hi there list, > > > > > > > > wondering if antone could shed some light on this problem? > > > > > > > > T28 turbo off a GtiR fitted to a CA18 det. > > > > It comes on boost at approx 4,000 - 4,200 RPM is this normal? > > > > > > > > Some say it is too high - if so why? > > > > > > > > I quite like it this way beacuse it means you can drive in the > > > >city without hitting boost all the time! > > > > > > > > Any suggestions appreciated > > > > > > > > Mark O'Connor > > > > > > > > > > > > > > > > > > > >--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]/ > > > > > > > >--------------------------------------------------------------------- > > > > > > > > > > > >--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]/ > > > > > > > >--------------------------------------------------------------------- > > > > > > > > > >--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]/ > > > > > >--------------------------------------------------------------------- > > > > > > > > > >--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]/ > > > > > >--------------------------------------------------------------------- > > > > > > > > > > _________________________________________________________________ > > > Help STOP SPAM with the new MSN 8 and get 2 months FREE* > > > http://join.msn.com/?page=features/junkmail > > > > > > > _________________________________________________________________ > The new MSN 8: advanced junk mail protection and 2 months FREE* > http://join.msn.com/?page=features/junkmail > --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]/ ---------------------------------------------------------------------
