ok I dont have the slip with me as im on a friends labtop but heres what i came out with
10psi with a ct26
this was done on a dyno jet and it was done in 3rd gear

the best run was 239.5 hp
351.5 l/b torque
the air fuel was around 11.9 a little on the rich side but not that bad.

Im just wondering why my horse power was so low. the torque was nice but the hp sucked.

 

Wholly Torque!!!! Did you upgrade your fuel pump as well? My guess is for you to try a real dyno soon because those numbers are muscle car numbers.

 

yeah I Upgraded to a 255lb fuel pump. I talked to some other shops and locals and they said the dyno was pertty accurate

 

wtf?



Was it on a dynojet?

 

yes it was dyno jet

 

specs on the turbo? Might not be breathing enough. Sig says you have an IC now, so the piping is probably all different.

Stock cams?


(edit: missed the ct26)

 

yes stock cams it is intercooled.

 

hardly

BTW as an interesting tidbit, muscle cars were considered any vehicle that had a 10:1 weight to HP ratio.
don't ask me where I heard that though, it's been over 10 yrs.

 

No kidding! Your HP barely went up, but your torque is nuts! The last V6 I saw putting out hp/torque numbers like that was the Buick GN turbo 6 back in the 80s.

 

if drivetrain loss is 15% making stock whp 136 and wtq 153 you'd have:

103.5 hp gain and a 198.5 ft. lb. gain torque

when was the hp peak? maybe you were running too rich when the hp peaked dropping power a little bit.

 

get us the curves before you make any assumptions.
you should have also run it in 4th gear.

 

Those are some faking awesome numbers !!!!!!!

 

I did pull in 4th and the numbers were lower. ok the it looks like the peak was around 5000rpms

 

WHOLLY DOG NUTZ!!!!!! I'm sorry but a 103hp gain and your not happy?!?!?!? What pray tell were you expecting? btw I'd take it in half a second!!!

 

i was hoping for about 260 to 275 hp to the wheels

 

from 136whp to 239.5whp with only 10psi boost and uber torque.. i think you should be very happy already.

in my foolish opinion i think hp increases not corresponding with torque increases prolly means breathing restrictions. like MrGone said...

 

I don't think those numbers are too shabby. I have a Tahoe with a 5.7 with a Whipple SuperCharger on it. The numbers are:
Stock W/ SC Gain %Gain
HP (Peak) 245 @ 4600 370 @ 4800 125 51%
Torque (Peak) 328 @ 2800 492 @ 2900 164 50%
Torque (Avg. - 2200-4000 RPM)320 479 159 50%

On a big V8 with 245 stock HP, the gain was barely more than you got with your turbo (and this was with a supercharger that retails for nearly $4,000).
I'd say you got your money's worth.

 

then your clutch was slipping, or those are the true numbers.
you want ACCURATE results, not just the highest number you can find on the car..

It sounds to me like your high end is REALLY falling off and some mods to help the engine breathe would be a very worthwhile investment..
the VG normally peaks around 5000rpm so that seems normal, but your torque numbers are either inflated from the 3rd gear run, or you have a LOT more power available to you with some tuning.

 

do the pull in 1st you'll see your #'s go real high

 

If you are using the stock turbo off a 87-89 z31,(which i think you are) which is a t25, i would say that you are reaching the limit of that turbo, since in stock form they are only pushing 190hp on ~4psi. You should have gone with a t3/t4.
forget to mention the top pic is off of "93turbo gxe" page, and the second one is
the t25 off of my 88t z31.

 

I thought the Z31s had either a T28 or T3?

 

hes using a CT26 turbo off an older supra

if the pull was done in 3rd those numbers are misleading and will read higher than normal so you cant compare them to anything else

go back do it in 4th again and post the dyno graph for us to look at

 

84 to early 87 - T3
late 87 to 89 - T25

 

84-86 Z31 use T3, and 87-96 z31, z32 use T25.
Also i "think" i saw a Nissan logo on his turbo, i don't think Toyota would anything like that in the Supra, would you?
Hey Mark, the rotors are waiting for me a the post office, and stop typing so fast.

 

why do people always pull up the wrong pics if you will look im using a ct26 with toyota on it. I did not use the nissan only had it mount and changed up. Post the other pics on my car domain of the ct26 next time.

 

the 4th gear run was iirc like 231whp and like 330lb of torque

 

So what do you run in the 1/4 mile then, high 13's to low 14's?

 

A stock 5 speed with a good driver can pull about low 16's or really high 15's. So with this upgrade granted that he has 100% traction can do mid to low 14's.

 

first off, those are some pretty good numbers you ever get that video of you going like a bazillion miles an hour?? you can still upload it to my site.


next, off topic
__________________
- VG30DETT engine swap
- RWD conversion
- 11's in the 1/4

 

Just FYI my supra with CT26@10 psi just did 238RWHP and 265RWTQ on the Horsepower Freaks Dynojet with about a 9.0A/F Ratio.... 4th gear pulls.

Whatever this may mean to you I don't know, but I thought I'd throw it out.

 

you're running too lean. remember, you're NOT an all motor car anymore
11.5 or lower a/f
id shoot for 11.2-11.1
just go with me on this one. don't flame me and tell me i don't know what im talking about.

 

Where has he been. Pulls the fastest VE then disappears.

 

Yeah, Bryan.... where HAVE you been???

 

im like a mythical creature. show up, then go back in hiding.
i still lurk these boards sometimes to see what everyone is doing.

on the vg turbo deal, get rid of the ct26. it's not doing you any good.
lower the a/f and be happy!

 

Oh on that case im actualy done with this car not another mod. Not because of the low horsepower its that im tired of no aftermarket surrport. Im hoping to get a 4th gen in the next month and im going to go turbo on this one also.

Ok my pipes that come from the manifold to turbo are about 12inches long and about 1 3/4 round someone said that they could be too small and cutting power. Maybe ill change them pipes and re dyno. But thats it for this 3rd gen. I will be going to the track this weekend and will let you all know what the out come is.

 

14.5to low 14,s?

Ok if I catch traction I should pull high 13,s

Ok take for instant the 350z runs low 14,s like 14.1s

Im lighter than a 350z and have more wheel horsepower and torque than a 350z.

we shall see this weekend. two guys from the fourth gen bored are going to meet me at the track so maybe they can back me up.

But ill post this dyno slip on sunday with the track slips.

 

cool man, put up some good numbers, if you want me to host your pics/vids let me know ill do it for you.

 

350z is also RWD which makes a HUGE diference in traction on street tires

350z dynos at about the same HP (around 230) but about 220tq

you do make lots more tq but lots of tq without slicks is a BAD combination

 

i guess your talking about ricer mods which the 4th gen clearly has way more

 

before you go and blow up the car
add more fuel!