X-man said:
Once the Motec is installed, I am thinking end of Jan ish
Jake: The 42 will put out a lil more power than the T88 I have and should spool similar too.
Duane
GT42 build done and running.
- Thread starter X-man
- Start date
Once the Motec is installed, I am thinking end of Jan ish
Jake: The 42 will put out a lil more power than the T88 I have and should spool similar too.
Duane
Reign_Maker said:
I'm worried it's too small and I've got about the same setup.
It's looking great Sean, you're a couple months ahead of me :-(
NashMan said:
I've set the rev limit on my AEM to 7500 rpm. If it makes full boost at 5000 to 5200 rpm this will be about a 2300 to 2500 rpm power band. My SP67 made full boost at around 4600 to 4800 rpm and the factory rev limit was 6700 rpm, so it won't be much of a trade off as far as that goes.
As far as the turbo being to small as said before I eventually want either a GT42 with an 80 mm inducer wheel in it or a GT45R with the 80 mm option. The GT45R is about a 2300.00 to 2400.00 dollar turbo where as the GT42-80 is about 1500.00. The GT45R has a different designed turbine wheel also. This is down the road alittle ways though.
Sean
sean, although you are talking about powerband.. believe me your first gear will suck.. .the fact that you have to rev the piss out of it to go anywhere blows.
you may want to consider a 4:30 gear to get you moving in to the powerband off boost faster.
you may want to consider a 4:30 gear to get you moving in to the powerband off boost faster.
Zazzn said:
probably not.
a higher (numerical) gear will only make appearant lag WORSE. lower gear = more load = faster spool.
buckshotglass
I love all your sounds.
Ho-le shit! That's big. I promise to watch the video when you post it, can't wait to hear that thing.:icon_bigg
Zazzn said:
There is always the antilag feature on the AEM where I can launch at 30 psi if I want to kill the life of my turbo.:naughty: My car has 3.90's in it now so if anything as Dr.J stated I would probably go to with 3.73's.
Sean
boostadikt said:
Do it X-Man!! With 637rwhp on stock internals and still going strong you're re-writing the book on the 7MGTE. Tells me every component of your build-up has been carefully thought out, and executed. Best of luck to you!
Im looking forward to your dynograph - it will be interesting to compare your curve to the 2j world.
drjonez said:
yes but it takes SO long to get in to boost that actually having the lower gearing helps because his turbo probably won't make any significant boost in first gear.
:aigo:
Believe me first gear with my 3.9 was faster when i finally got to boost but with the 4.3 it made it so much more reponsive on the engine.. The faster I got though first to get 2nd or 3. The better it was because the car was a snail until i hit boost.
I mean SNAIL 80 WHP according to the dyno lol. cams on a 1jz which loose low end really doesn't help since the engine has no low end to begin with.
X-man said:
I have anti lag on my aem as well, I guess it's just that I want something diffrent. I'd rather more low end mid range and have to add nitrous ontop of my turbo if i needed extra power, rather then spooling the turbo with it.
Gt42 spools faster then one would think though... It's suprisingly fast on my friends 7m compaired to the size of the housings.
Zazzn said:
yep and thats great. everyone wants something different in what they want the car to do.
myself, i really dont care what kind of power im making down low on the street. heck it takes 2k rpm just to get my car to move w/ the high stall converter. 4k+ is where its at for me. but see with my setup i didnt want to run too big of a turbo because i have stock redline and while my converter is pretty loose, running too big i cant spool like i want when i stall it up.
sean is somewhat similar in his views. he isnt one to get real excited about low end power. he would rather the turbo hit like a hammer and make the passenger puke lol. if you remember, he liked the .81 housing on his sp67 vs the .68. it was a little softer on the bottom end, but the turbo hit harder and made it more manageable to drive/launch in low rpm.
but like i said, everyone wants something different and even w/ the same turbo 2 cars arent gonna behave the same. a lot comes into play.
Zazzn said:
you have your exp, i have mine. i can post up dyno graphs showing a 200+ RPM difference in the entire curve just based on a diff ratio change.
it's a matter of actual spool vs. appearant spool- a higher numerical diff will make it FEEL like you're getting into boost faster....
I'm not sure which one would be the bigger accomplishment: Making 639rwhp on stock internals with a stock ECU. Or potentially making 700+rwhp on stock internals with AEM ecu. Either way, 630+ rwhp is pretty incredible for a stock internaled engine; Something many import and domestic engines can not acheive without blowing up on there first dyno tune.