auto x!!

zbrown

like faber said, trim is nothing more than (ind^2/exd^2)*100

57trim is just a common name given to a popular T04E compressor

My gt42 has a 53 trim compressor and 84 trim turbine....

if you have the trim # and either ind or exd it is easy to find the other

DrifterExtreme

revolutionz_s13;196277 wrote:
well, fabers turbo(AMS GT32) is roughly equivalent to a garrett 50 trim, .60 a/r. Which is smaller in size and probably less efficient (AMS wont give out the exact specs) than a GT3076R, .82 a/r. Faber has no problems up top, I dont think I will have to worry about that. There is a guy on ka-t.org that is making 417whp with a similar setup to mine @ 19psi with a gt3076r .82 a/r.

now see i'm running the same turbo same specs, i got the atp 3" v-band.

now with my motor i should see full boost buy say 4800ish give or take based on my monster manifold. now i rev to 9k so i will have a power band.

but unlike you i will not make near the torque you will, so all i'm saying is that you need to look at the fact that it will just make it harder fo ryou to drive the car to it's potential. but i spose we will see next year.

zbrown

kinda curious

so lets say 400whp....

how much boost would it take Matt to make that? and how much torque

vs

how much boost with the KA, and how much torque

with identical turbos; the ones you stated above

DrifterExtreme

gt3076r, 18 lbs , high 200's for torque.

now this is with a small .48 turbine

http://www.s2ki.com/forums/index.php?act=module&module=gallery&cmd=si&img=397509

revolutionz_s13

on the KA, you will see ~400whp @ roughly 19-20psi, hitting full boost by roughly 5k-6k rpms(dont quote me on that....) depending on setup. That should net you depending on tuning, about 350ft-lbs of torque.
this would be the gt3076r with the .82 a/r turbine

here is a dyno from some guy down in georgia that has a similar setup to mine....
legacy image

KA-T_240

revolutionz_s13;196336 wrote:
on the KA, you will see ~400whp @ roughly 19-20psi, hitting full boost by roughly 5k-6k rpms(dont quote me on that....) depending on setup. That should net you depending on tuning, about 350ft-lbs of torque.
this would be the gt3076r with the .82 a/r turbine

here is a dyno from some guy down in georgia that has a similar setup to mine....

Ivan has 40psi on his gt42 sooner then 6k.

you should have around 20psi at like 4k.

revolutionz_s13

eh maybe...like i said not too sure about that...i thought it would be about 4200-4400 from when i did all the calculations from the compressor map, but i wasnt sure if i figured right.

KA-T_240

you do remember how fast my turbo spools. and yours should spool around the same as mine does. The DBB should somewhat make up for you having a .82ar

DrifterExtreme

ball bearing doesn't mean faster spool...... you should know that faber...haha

revolutionz_s13

well in a round about way it does....it takes less force to spin a DBB cartridge than it does to spin a ceramic journal bearing cartridge...which means the turbo wheel will reach higher speeds faster...which means the compressor will flow more air faster = boost faster.

KA-T_240

Yes, i know this. DBB makes the turbo more efficient, also get more devoted lubrication and coolin. and then what nate said.

I would be hard, but if you have 2 identical turbos one with journal bearing and the other with the DBB, 95% of the time the DBB will spool faster then JB turbo,

WITH ALL THINGS BEING EQUAL

DrifterExtreme

borg warner? ....

haha ok now i'm just being diffecult...

zbrown

thats interesting, thanks

for comparison here is what your typical 13b rew will do

here is a graph of a typical single setup.... gt 3582r---1.06a/r

13-15 psi, 320-340lb-ft, 400rwhp, full boost 4k

you need alot bigger turbo for the same power.......

legacy image

nvrdone

Ok, back to the class/setup thing.

1988 RX-7 GXL - Full suspension, coilovers, bushings, sways, everything.. Rebuilt 6-port n/a, itb's, prolly microtech lt8, cage..

guessing sm as its still a dd setup I hope :drunken_smilie:

GarageAlchemist

id like to see that...

nvrdone

Hopefully by next summer you will. Almost have enough saved for the rebuild.

King Ricer

nvrdone;196643 wrote:
Ok, back to the class/setup thing.

1988 RX-7 GXL - Full suspension, coilovers, bushings, sways, everything.. Rebuilt 6-port n/a, itb's, prolly microtech lt8, cage..

guessing sm as its still a dd setup I hope :drunken_smilie:

damn sounds like the nice set-up! what was your name again?

JN210

I will be running my stock setup(as if I have another anyway lol).....I just want to get a feel for the sport first, Im going to have some fun and learn a little bit.

zbrown

nvrdone;196643 wrote:
Ok, back to the class/setup thing.

1988 RX-7 GXL - Full suspension, coilovers, bushings, sways, everything.. Rebuilt 6-port n/a, itb's, prolly microtech lt8, cage..

guessing sm as its still a dd setup I hope :drunken_smilie:

for a whole 180 rwhp if you are lucky on a tuned S4 stock port 6 port......

bubba

Not everyone wants an enourmous turbo that needs anti-lag to spool and a million hp...some want something that'll work good for auto-x

Fargostreet.com

auto x!!