My S13 SR20 blacktop... Can I go 13's?

Kingtal0n · Jan 5th, 2005, 03:55 PM

Just want to know if I take it to the track, should I be going 13's?

1992 240SX, S13 SR20 Blacktop, Type X J4 ecu;
Front mount, 1Bar of boost, ACT Street clutch, Open diff, Stock 195's. Stock T-25.

And how much power should I be making, around 250 right?

TheVodKA · Jan 5th, 2005, 05:03 PM

I'd put a better set of tires on there, but the only way to know is to take it to the track. Also, higher elevation leads to higher 1/4 mile times, so keep that in mind.

Joel · Jan 5th, 2005, 06:55 PM

250? dont think so. More like 210 hp

Marblecake · Jan 5th, 2005, 08:31 PM

You dont think he would gain more then 5hp with double the boost? 1 bar is 14.5 or 14.7 Stock psi is 7 if i remembr correctly.

asleepz · Jan 5th, 2005, 08:35 PM

Quote:

Originally Posted by vodKA

I'd put a better set of tires on there, but the only way to know is to take it to the track. Also, higher elevation leads to higher 1/4 mile times, so keep that in mind.

Whoa whoa there, you got that backwards. Cars run better at low elevation (such as me -9 ft. sealevel.) Much more dense air and more for the turbo to push.

OPIUM · Jan 5th, 2005, 11:03 PM

^^^ He didn't get anything backwards. You misunderstood

re-read what he wrote.

You need a good LSD and probably slicks to be in the consistent 13's with those mods. I'd say get a 1 piece driveshaft too

Joel · Jan 6th, 2005, 03:12 AM

Quote:

Originally Posted by Marblecake

You dont think he would gain more then 5hp with double the boost? 1 bar is 14.5 or 14.7 Stock psi is 7 if i remembr correctly.

All measurements are done in HP to the wheels or hubs. From factory the SR is around 140hp at the wheels.

ckykm · Jan 6th, 2005, 08:23 AM

yeah you should be running 13's...my friend was running 13psi on a stock T-25 turbo

-FMIC
-Intake
-Exhaust
-Short shifter
-and basically the other things you have

best he ran was a 13.2... I believe they were drag radials on the back

mille-16i · Jan 6th, 2005, 10:52 PM

Quote:

Originally Posted by Joel

All measurements are done in HP to the wheels or hubs. From factory the SR is around 140hp at the wheels.

The stock SR20DET was doing 140whp? my sentra book puts the crank Hp on a SR20DE at 140hp I think your numbers may be off. Also a good set of drag tires will do wonders as will a LSD other wise you will spend a second or two just making pretty blue smoke.

Kouki S14 · Jan 6th, 2005, 11:25 PM

Stock KA dual cam makes 120-130 rwhp. The SR should be around 165-180 rwhp. My friends 89 hatch with a stock SR and a front mount has gone 13.0 without slicks and a decent amount of wheelspin. Your open diff may be hurting you alot but you should be around there with some good tires.

Joel · Jan 7th, 2005, 02:30 AM

Crank HP is not wheel HP.
Ive seen a lot of SR's dynod.

Kouki S14 · Jan 7th, 2005, 11:12 PM

Are you sure you dont mean kW? for a motor rated at 205hp to lose 65 hp through the driveline seems a bit steep. I know it all depends on the conditions and on which type of dyno you used. Also 140kW is about 187hp. That doees seem a little high for stock but it makes more sense to me.
The KA24DE is rated 155hp and every dyno i've seen is 123-132hp for a stock motor at the wheels.

mille-16i · Jan 8th, 2005, 11:42 PM

you should only see a max of 20% power drop through the drivetrain if you get more you may want to look into it. so 205 crank Hp should yeild you atleast 164 whp

Joel · Jan 9th, 2005, 10:22 PM

It all depends on the dyno you are using.

s10cky · Jan 29th, 2005, 09:40 PM

I might as well add this. my buddy has an se-r with the bb det in it. 211whp with tuning. motor is completely stock. rated at 205. so...the exhaust helps. 3 inch