G35 Twin Turbo Project
12-23-2010, 03:25 PM
#63
good deal. instead to tubular manifold like my SFR kit, you are just bolting to the stockers. i wish my wastegates were that accessible for sure!
like i said, its not rocket science. you are limited to the size of the turbos you can use, but this a very nice presentation!
The real race now would be to get jigs to beat anyone else to market!
like i said, its not rocket science. you are limited to the size of the turbos you can use, but this a very nice presentation!
The real race now would be to get jigs to beat anyone else to market!
Last edited by str8dum1; 12-23-2010 at 03:26 PM.
12-24-2010, 10:08 AM
#64
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Thanks! Finished dyno tuning this morning, made 341whp and 339wtq at only 5psi! After all of the runs the cooler was still really cold to the touch, even the intake tube! Air/Fuel ratio above 4K was a nice straight 12:1. Next week I'm tuning it to 8psi.
Here is a pic of the dyno sheet:
My buddy took some video, trying to get him to send it to me.
Here is a pic of the dyno sheet:
My buddy took some video, trying to get him to send it to me.
Last edited by Jattus; 12-24-2010 at 10:12 AM.
12-24-2010, 12:24 PM
#66
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could you post a boost curve? it seems kind of laggy for those size turbos. They are 46 inducer with 57 exducer.
VR3's build with twin 5557 (55 inducer, 57 exducer) was 19psi by 4k rpms and put down over 500ftlbs of torque by 4300rpms. it's a larger turbo and spooling to a higher boost even sooner than your 5psi. weird.
his dyno for reference: https://my350z.com/forum/shop-builds...-on-93oct.html
VR3's build with twin 5557 (55 inducer, 57 exducer) was 19psi by 4k rpms and put down over 500ftlbs of torque by 4300rpms. it's a larger turbo and spooling to a higher boost even sooner than your 5psi. weird.
his dyno for reference: https://my350z.com/forum/shop-builds...-on-93oct.html
12-24-2010, 12:24 PM
#67
jeff, of course a load based dyno like a mustang is going to show better spool than a dynojet. At 5 psi, i think thats a pretty solid curve.
that AFR is just fine for those HP levels. very nice, even better to silence the nay sayers!
that AFR is just fine for those HP levels. very nice, even better to silence the nay sayers!
Last edited by str8dum1; 12-24-2010 at 12:27 PM.
12-25-2010, 12:34 PM
#74
12-25-2010, 01:13 PM
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We were getting full boost (so 5psi at the moment) at 2500rpm, and it would hold that 5psi all the way up to redline. They spool very fast.
We are near the westminster/broomfield area, what about you guys?
We are near the westminster/broomfield area, what about you guys?
12-25-2010, 06:01 PM
#79
I'm curious to know if that 7th injector was used... and I checked out the shops webpage... I noticed the BOV's for sale... I'm assuming they are ebay BOV's because of the price... so then i took a glance at the twin Big16g's... are these ebay turbos also?
But new to the VQ and coming from the DSM world of the 4G63 with 7+ years, the Big/EVOIII 16's are def. fun turbos... but 2.0L on a single EVOIII16G did not give full spool up till about 3500-4K RPMS on my DSM... but pull all the way to Redline... i can only imagine a twin set up
One thing i did notice that no one brought up... we are talking about full boost at lower rpm's... what about the practicality when it comes to traction? I have experience with MR2's and 16G's but with the weight in the rear... traction at low rpm's was not an issue.... I have noticed how easy it is to loose traction in my 350z. I have the track edition and the LSD still trips the trac control
... If i have shown any ignorance, please do not mind. Just trying to get into the VQ world
-NissanTracker
But new to the VQ and coming from the DSM world of the 4G63 with 7+ years, the Big/EVOIII 16's are def. fun turbos... but 2.0L on a single EVOIII16G did not give full spool up till about 3500-4K RPMS on my DSM... but pull all the way to Redline... i can only imagine a twin set up
One thing i did notice that no one brought up... we are talking about full boost at lower rpm's... what about the practicality when it comes to traction? I have experience with MR2's and 16G's but with the weight in the rear... traction at low rpm's was not an issue.... I have noticed how easy it is to loose traction in my 350z. I have the track edition and the LSD still trips the trac control
... If i have shown any ignorance, please do not mind. Just trying to get into the VQ world
-NissanTracker
12-25-2010, 06:11 PM
#80
I would like to also add, being an engineer myself that i gave an A+ on the enginuity he has presented to us. We gain first hand on these forums without the failures. I just consider it a unique build that will give him the experience... regardless of the failures he should, if not at all, encounter. I will be looking forward to the progress! GOOD WORK 
-NissanTracker
-NissanTracker