Twin t25's w/street ported intakes and race port exh.
10-01-2006 | 05:57 PM
#1
Thread Starter
Senior Member
Joined: Jul 2003
Posts: 105
From: Barrie, Ontario, Cananda
Some of you might remember my thread when I was building the car. I'm running 7lbs of boost(for now) with twin t25's(sr20 black top turbo's) rtek 1.7 and an safc2. The car dynoed at 255hp and 208lbs of tq. That was with a t2 block, street ported intakes and lrg exh. ports(5mm down,4.5mm up and about 3mm wider).
Brent
Brent
10-02-2006 | 08:22 PM
#5
Thread Starter
Senior Member
Joined: Jul 2003
Posts: 105
From: Barrie, Ontario, Cananda
Originally Posted by j9fd3s' post='839230' date='Oct 2 2006, 08:41 AM
nice! its got a fat tq curve.
Thanks, the tq is really nice for 4th and 5th gear pulls. I can't wait to see what she does at 12psi in the spring. Of course I have a lot to do between now and then.
Brent
10-05-2006 | 07:58 PM
#7
Thread Starter
Senior Member
Joined: Jul 2003
Posts: 105
From: Barrie, Ontario, Cananda
Originally Posted by Midnightdriver' post='839748' date='Oct 5 2006, 02:06 PM
very nice for only 7 psi..some pics of the front end please....just thinking here but a polished fd uim would look reallly good on that.
The al. intake pipe going to the tb in those pics is just temporary. I used the na one that I made yrs ago and hacked it up. All I had time for.(and money)
10-05-2006 | 08:10 PM
#8
Thread Starter
Senior Member
Joined: Jul 2003
Posts: 105
From: Barrie, Ontario, Cananda
Originally Posted by Midnightdriver' post='839748' date='Oct 5 2006, 02:06 PM
very nice for only 7 psi..some pics of the front end please....just thinking here but a polished fd uim would look reallly good on that.
The al. intake pipe going to the tb in those pics is just temporary. I used the na one that I made yrs ago and hacked it up. All I had time for.(and money) Here's some pics, obviously there's a lot left to do.
Brent
12-10-2007 | 07:08 PM
#9
Thread Starter
Senior Member
Joined: Jul 2003
Posts: 105
From: Barrie, Ontario, Cananda
Wow, it's been a long time since I've posted on here.
Here's the new #'s running 14-15psi with just an rtek 2.0. I ran out of fuel at 6k and couldn't add any more. I'm running 700cc/1000cc.
Not sure what the new set up will be come spring time. My t25's died shortly after turning the boost up so its time for a new setup.
I'm pretty sure this was made on one turbo but there's no way to be sure now so who knows?
AFR's were mid to low 11's til about 5500 then they just start to lean out fast, I had to let off because it started to knock. After the dyno I turned the boost back to 12psi. Made slightly better torque on my baseline run at 284lbft.
Here's the new #'s running 14-15psi with just an rtek 2.0. I ran out of fuel at 6k and couldn't add any more. I'm running 700cc/1000cc.
Not sure what the new set up will be come spring time. My t25's died shortly after turning the boost up so its time for a new setup.
I'm pretty sure this was made on one turbo but there's no way to be sure now so who knows?
AFR's were mid to low 11's til about 5500 then they just start to lean out fast, I had to let off because it started to knock. After the dyno I turned the boost back to 12psi. Made slightly better torque on my baseline run at 284lbft.
01-05-2008 | 11:46 PM
#10
Senior Member
Joined: Aug 2002
Posts: 1,081
From: Reno,NV
nothing wrong with your turbo set up..think about sticking with the silvia twins..but upgrade from the old t-25's from a 180 sx and step up to the s-14 t-28's or the s-15 t-28's. both are physically the same size of you old turbo (or pretty close). Both are BB and spool a little faster and flow better. Again nice ride