Bluebird

[P10DET]

Originally posted by APEXSER
I can not recall a single person who has dynoed 250 hp with a T25 or 370cc injectors.

Ditto. It would be very dangerous for the engine.

Originally posted by APEXSER
Anything past 10 psi on a T25 becomes very inefficient!

And how! Rob did some calculations of compressor discharge temps and they were downright scary above that level.

1 Bar + T25 = BOOM

Originally posted by APEXSER
The 370cc injectors max out at 230 hp! You would run *EXTREMELY* lean if you try and push those injectors past 10-12 psi with a T25. The factory MAF is maxed out right around there also! I am not sure where you are getting your information, but by stating that 250 whp is attainable with 370cc injectors on an SR20 is just plain ignorant! That would be a very costly mistake!

Thanks for the back-up Louis. I've been telling everyone here that very same thing since day one.

Most of you guys are not familiar with Louis, but y'all should be very glad he's here. Louis is very knowlegeable about the SR20, and turbocharging it in particular. He has not only build a couple of fast SR20 powered cars, but has been involved with some really wicked-fast SR20 powered cars.

[P10DET]

Originally posted by APEXSER
I don't mean to sound like a dick....But it sounds to me as if you haven't done any research. Research is very important when trying to turbocharge a vehicle!

I agree with Louis. There is a lot of good information here, on SE-R.net, and in the SE-R Mailing List archives. A little reading up before asking questions is a really good idea. A lot of time simple questions may be ignored if folks feel the information is already out there and readily available. Don't forget to keep an open mind. And don't believe things just because you want to believe them. There is a lot of misinformation out there, but fortunately, the SR20 community is filled with some pretty knowledgeable folks when it comes to forced induction, including an engineer for Garrett.

[Atdogg77]

by mailin list you mean that huge document that has a bunch of months etc. right? sorry i'm new...well i've been trying to read up on that, but that thing is so big, that i really dont know where to start! Researching your questions seems to be a big deal in this forum. Although there is just a TON of information on the web, that you and past members have accumulated, some of this is hard to find, especially when trying to find very specific subjects. I know repeating things over and over with can get extremely annoying, but i ask that you elder, or more experienced people bear with us newbies. thx

[AznVirus]

how many lbs of boost would 1 bar equal?

[APEXSER]

Originally posted by AznVirus
how many lbs of boost would 1 bar equal?

1 Bar = 14.5psi

[P10DET]

Originally posted by Atdogg77
by mailin list you mean that huge document that has a bunch of months etc. right? sorry i'm new...well i've been trying to read up on that, but that thing is so big, that i really dont know where to start!

Sometimes if you just ask where to start doing research, you will get great links and references.

Actually, I mean the SE-R Mailing List. Here his the homepage and the archives:

http://www.se-r-list.org/

http://www.se-r-list.org/archives/

Originally posted by Atdogg77
Researching your questions seems to be a big deal in this forum.

Yes it is, if you want to get folks with the most knowledge to respond. Sometimes you will get a response that just points you somewhere on the web because the info already exists.

Originally posted by Atdogg77
Although there is just a TON of information on the web, that you and past members have accumulated, some of this is hard to find, especially when trying to find very specific subjects. I know repeating things over and over with can get extremely annoying, but i ask that you elder, or more experienced people bear with us newbies. thx

No sweat. Believe me, I understand. I'm a total newbie on the subwoofer mailing list, and now I'm going through the same sort of thing you are with the Porsche 944 list. I'm trying to research and get knowledge from those folks.

So, please be patient with us too. Many of us (and most of the most knowledgeable folks) have our own projects that we are doing our own research on. That is one reason you're more likely to get a response if you've done some research or at least attempted. We all know what it's like to need info and not know where to start. It just really helps when you can be more specific with questions.

[G-Forces]

Originally posted by P10DET
Actually, I mean the SE-R Mailing List. Here his the homepage and the archives:

http://www.se-r-list.org/

http://www.se-r-list.org/archives/

Man if I got paid for every hour I spent in those archives....I'll have a couple hundred bucks.

Seriously guys it's a great resource and you should really look into it. There is a little bit of a learning curve for finding things but it's well worth it.

[lloyd_nickens]

I'm trying to read it now, boy it does have a pretty steep l curve. But I think I'll be okay.

[G22DET]

a bit of confusion i guess...if you are talking about whp, then yeh, no way you can achieve 250whp from a factory DET motor.
I dont know about boosting 1bar would be unefficient for the SR...at least I know that's not the case for the RWD DETs.

[APEXSER]

Originally posted by G22DET
a bit of confusion i guess...if you are talking about whp, then yeh, no way you can achieve 250whp from a factory DET motor.
I dont know about boosting 1bar would be unefficient for the SR...at least I know that's not the case for the RWD DETs.

I think you are missing the point entirely! Teh factory Bluebird T25 becomes very inefficient at those boost levels. The temperature of teh compressed air becomes very hot also, since the turbo is spinning so fast, even a front mount intercooler has a hard time chilling the air!

The S13 turbo is the same turbo as teh Bluebird, so results will be the same.

The S14 turbo is actually a Ball Bearing T28 very similar to the GTiR turbo, except the GTiR turbo isn't ball bearing. The S14 turbo also has a T04B compressor housing rather than a T3 housing like the GTiR. The GTiR Turbo can support 15-16 psi, but it becomes very ineffiecent as well with anything past 17 psi.

Teh S15 turbo is identical to the S14 turbo other than a different brand turbine!

[G22DET]

i have seen s13s and s14s running 1 bar at road tracks with no problem!
perhaps it does become inefficient, i am not telling everyone to boost that much, just pointing out that it can boost up to that much, max!
no one asked for the turbine configurations for the silvias but since you know, i guess you like to share!
here's something you might have missed! the first years of the S14 did NOT come with a ballbearing turbo. I believe Nissan implemented the ballbearing turbine starting 96 if i remember correctly!
S15 turbines are NOT identical to the S14 turbines, i dont know the exact specs right now (i'll post after some research if you are intersted)...there are some tuners in Japan switching to S15 turbines on the s14 to get extra power at a lower cost. Thus they aren't identical, as you mentioned.

[G-Forces]

S14 SR20DET: T-28, 60 trim 60 mm BCI-1 compressor in T-04B housing,
*********** 62 trim 53.8mm T-25 turbine.* .64 A/R turbine housing.
*********** Ball bearing center section.

S15 SR20DET: Same as S14, but with Inco turbine wheel (instead of
*********** GMR), cast divider wall between turbine discharge and
*********** wastegate.

[P10DET]

Originally posted by G22DET
i have seen s13s and s14s running 1 bar at road tracks with no problem!

Well, are they running stock turbos? That is very important to know. Running 1 bar with a T25 or T28 is very different from runing 1 bar with a T04E or similar large turbo.