Dynoed my car tonight: S13 blacktop 370cc's GT28R S15 turbo 270whp 235ft lbs

[supreamS14]

I was very happy with my 3 runs for $40. Well 4 because the guy ran the first run in 3rd gear. I then told him 1:1 was 4th. 1st run @ 10psi made 260whp/ 225ft lbs. 2nd run @ 12psi made 268whp/ 233ft lbs. Made 20ft lbs more @ 3000rpm. 3rd run @ 12 psi made 270whp/ 235ft lbs. Made 20ft lbs more @ 3000rpm. All runs were reved to 6500rpm but looked like I could of went to 7000rpm. AFR looked good at steady mix. about 12:1. I know I need to give the injectors some room so I will back boost back down to 10psi. I will post a pic on Monday when I'm at work. List of mods: S13 blacktop sr20det w/ Gt28R in a 96 240sx Fmic 3" xspower turbo back exhaust Heat wrap stock exhaust manifold / cold pipe/ down pipe N60 maf (maxima) / custom Intake Walbro 255 / 300zx fuel filter / Apexi SAFC2 (un-tuned) / FPR Altima fans / No ac belt / Shaft-masters aluminum Driveshaft NGK iridium plugs / Royal purple oil/trans/diff Greddy oil pan cosworth 1.5 Head gasket with extra coolant holes / ARP studs SS turbo lines Exedy stage 2 clutch I start making boost @ 1300rpm and hit full boost @ 2900rpm


Modified by supreamS14 at 5:14 PM 2/10/2009

[wzntha]

.

[jr_ss]

If you dyno in other gears(before 1:1) it multiplies the actual reading, therefore recording higher numbers than what you may actually be producing. The closer you can get to a 1:1 gear ratio the better off you'll be.

[snake240]

nice

[wzntha]

.

[mRodiek]

Very nice numbers! Im doing something similar, grab some injectors & a tune and crank up the boost

[Sabot]

Nice #'s can't wait I dyno my S14.

[the converted]

All runs were reved to 6500rpm but looked like I could of went to 7000rpm.

Isn't the stock redline 7500 rpm?

[tercel drifter]

ya but you put a lot of strain on ur engine at high rpms. im sure he could of benn going 7k+

[240_SeX]

Very nice, I will be dynoing mine in the spring with very similar setup. I have 550cc injectors tho, and will be shooting for numbers north of 300whp on around 18psi

[newdude1]

When you did your head gasket did you resurface the block or head?

[supreamS14]

When you did your head gasket did you resurface the block or head?

The head. I checked the block with a straight edge. It was flat.

[OneJay]

Nice numbers.

[jr_ss]

Isn't the stock redline 7500 rpm?

No, stock redline is 7k... There's no sense in pulling all the way to 7k rpm if you aren't making power there. I shifted my car at the track at no more than 6500rpm when racing because that's where I could feel the car stop pulling. Over revving a motor when power starts to trail off is where damage is done.

[supreamS14]

The scanner at work is broken so I will try to go to Kinko's or something. By the look of the power-band, it looks like I could of went to 7000rpm. I was also kind of concerned that if they went a little over 7000rpm, a rocker arm might pop off. Plus I'm glad I didn't make any more power as sometimes injectors tend to flow less threw their lifespan.

[the converted]

No, stock redline is 7k... There's no sense in pulling all the way to 7k rpm if you aren't making power there.

With a GT28R you should be making power there. Nissan sets the redline at 7500 because that is where it is safe to take the engine to.

[newdude1]

The head. I checked the block with a straight edge. It was flat.

Did you have to disassemble the whole head to get them to do that?

[david200095367]

+1 with you.

[supreamS14]

Did you have to disassemble the whole head to get them to do that?

No, I took out the cams, rockers and lifters. I forgot to take out the shims in order and the guy put them in a bag for me , So I had to re-shim everything (PITA)! KEEP YOUR SHIMS IN ORDER!!!



I took it to 7000RPM today and it felt like it wanted to go to 7500RPM!

[the converted]

Looks good and healthy! Am I reading it right that your AFR is a little leaner than 13 or is that just the way that the dyno's gauge read?

[newdude1]

did your lines com with the oil restrictors or what did you use?

[supreamS14]

Looks good and healthy! Am I reading it right that your AFR is a little leaner than 13 or is that just the way that the dyno's gauge read?

They read A/f at the tail pipe so its leaner than if I had a wideband installed in my downpipe. After I can afford coilovers I will get bigger injectors, wideband and a tune.

did your lines com with the oil restrictors or what did you use?

They did but it had too big of a hole so I ordered one for the GT28R.

[s13-t]

Hey are you running stock injectors? are 370cc injectors stock on the sr? reason I ask is because im rebuilding my sr and upgrading to a s15 turbo- and I have been wondering if the stock injectors could handle the stock boost from the s15 turbo... I have searched alot and found mixed opinions... sry if this counts as a threadjack

[supreamS14]

Hey are you running stock injectors? are 370cc injectors stock on the sr? reason I ask is because im rebuilding my sr and upgrading to a s15 turbo- and I have been wondering if the stock injectors could handle the stock boost from the s15 turbo... I have searched alot and found mixed opinions... sry if this counts as a threadjack

Yep stock 370cc's. I would say YES but like I also said earlier:

sometimes injectors tend to flow less threw their lifespan.

Some people can run 10-12psi and for some it will melt pistons because the injectors don't flow a full 370cc's. So boost with extreme caution! I would know, I melted a piston 2 different times! Remember These are old motors with god knows how many real miles are on them or what they have been threw. Have your injectors flow tested or you can just

[homeslicej2]

They read A/f at the tail pipe so its leaner than if I had a wideband installed in my downpipe. After I can afford coilovers I will get bigger injectors, wideband and a tune.

Nice numbers on stock injectors and I love the full boost before 3k one thing though and IMHO, I would delay coilovers and get a ROM-tune, wideband, and injectors first. I wouldn't trust an SAFC for tuning since it only affects fuel and not timing. Plus, popping your motor can cost you more than a set of coils and I would rather have a safe motor than a slick stance. Just my .02/opinion.

[supreamS14]

Nice numbers on stock injectors and I love the full boost before 3k one thing though and IMHO, I would delay coilovers and get a ROM-tune, wideband, and injectors first. I wouldn't trust an SAFC for tuning since it only affects fuel and not timing. Plus, popping your motor can cost you more than a set of coils and I would rather have a safe motor than a slick stance. Just my .02/opinion.

Yes I know, I poped it twice. I'm running 8-10psi untuned now.That's all I need for Auto-x and drift. The only thing that's holding me back in my drifting is tires and suspension. I have stock base model shocks and tein s-tech springs. Check me out http://www.youtube.com/watch?v=52BUgvXjuh0 I don't think a 310whp SAFC2 tune would be too bad. Any more power than that I wouldn't trust it ether. If I ever upgrade the turbo it will be Nistune ECU all the way!

[MastaYu]

[homeslicej2]

Yes I know, I poped it twice. I'm running 8-10psi untuned now.That's all I need for Auto-x and drift. The only thing that's holding me back in my drifting is tires and suspension. I have stock base model shocks and tein s-tech springs. Check me out http://www.youtube.com/watch?v=52BUgvXjuh0 I don't think a 310whp SAFC2 tune would be too bad. Any more power than that I wouldn't trust it ether. If I ever upgrade the turbo it will be Nistune ECU all the way!

I can't watch youtube at work and i don't have intrawebz at home either 310whp in an s14 would be fun. one day I guess.