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Old 08-30-2012, 04:38 PM   #661
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Quote:
Originally Posted by Braineack View Post
wanna race?
i'm only racing your altima. in my jeep.
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Old 08-30-2012, 04:40 PM   #662
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Old 08-30-2012, 04:47 PM   #663
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I also got these goodies for free, because Borg Warner is awesome.
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Old 08-30-2012, 05:55 PM   #664
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Sweet. I know I am a long way out from turbo-ing my car, but I am very interested to see how the BP spools the 6758. We have lots of disco potato and T25 spool numbers, but not many EFRs.
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Old 08-30-2012, 06:26 PM   #665
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Yeah that's my biggest question too. I already know the 6258 spools like a GT2554. 6758 is same turbine wheel but completely different compressor wheel. Weight difference is negligible between the 2 wheels but the design is different. 6258 uses a 14 blade wheel where as 6758 is a 12 blade wheel.
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Old 08-30-2012, 06:32 PM   #666
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Correct me if I'm wrong but you're the 1st to try the 6758 right?

Thread status: STILL WINNING
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Old 08-30-2012, 06:38 PM   #667
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yep i'm the first.
the only point of reference of 6758 vs 6258 I have is some greek guy with an Audi TT who commented on my

Quote:
Originally Posted by dem crazy greeks
Yes I've tried both in the same car and setup. The 6258 makes much more power in the low rpm, it spools like a VF34. The 6758 is suitable for your setup since you need 400 WHP but you should expect later spool.
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Old 08-30-2012, 06:53 PM   #668
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Quote:
Originally Posted by dem crazy greeks
Yes I've tried both in the same car and setup. The 6258 makes much more power in the low rpm, it spools like a VF34. The 6758 is suitable for your setup since you need 400 WHP but you should expect later spool.
Lol, this guy is a genius.

Of course it will spool later. How much later is the question. Will it spool like a 2860? Or worse, closer to a 3076?

Also, is there any way to compare theoretical spool times via compressor maps?
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Old 08-30-2012, 07:03 PM   #669
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It cannot possibly spool like a 3076. That would be beyond fail and unlikely.
I'm going to randomly predict somewhere between 2860 and 2871.
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Old 08-30-2012, 07:15 PM   #670
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GT25 and GT28 have different turbine wheels.
6258 and 6278 have same turbine wheels.
GT2554 and GT2560 have same turbine wheels.

therefore, it should spool like a GT2560.
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Old 08-30-2012, 07:34 PM   #671
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therefore if it spools like a 2560 but makes 400, then
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Old 08-30-2012, 08:38 PM   #672
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I was talking to fullrace about which to use in a twin setup (6258 or 6758) for a different car. They said spool difference is negligible between the two
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Old 08-30-2012, 08:47 PM   #673
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Quote:
Originally Posted by gorillazfan1023 View Post
I was talking to fullrace about which to use in a twin setup (6258 or 6758) for a different car. They said spool difference is negligible between the two
But that doesnt mean power wont be different at low RPM between the two.
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Old 08-30-2012, 08:50 PM   #674
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True, I was speaking specifically about spool and didn't think that they also meant power
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Old 08-30-2012, 09:00 PM   #675
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I don't really care about spool on a dyno.. I care about transient response. As long as this one has the same "ready to go, anytime, anywhere" super-awesome feel that the 6258 had, I don't care.

Oh and I wonder if it whistles differently....


Quote:
Originally Posted by gorillazfan1023 View Post
I was talking to fullrace about which to use in a twin setup (6258 or 6758) for a different car. They said spool difference is negligible between the two
Indy car?
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Old 08-30-2012, 09:04 PM   #676
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I bet it will spool about 200-300 rpm's later, just a wild speculation from all the EFR research I have done in my life.

But you won't be spoolin at all until I fix up the manifold!!! Mani should be all fixed and spiffy on Sunday, and shipped on Monday (tuesday probably because labor day). I am going to add some gusset plates to the affected area as well, just like absurdflow does on their long sections. I will put some pics in here of the glory
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Old 08-30-2012, 09:16 PM   #677
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Quote:
Originally Posted by soviet View Post
Indy car?
I wish. It is a 370z though. So still pretty sweet.
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Old 08-30-2012, 09:27 PM   #678
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Twin 6758s on a V6? Sounds like an Indy car to me!
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Old 08-30-2012, 09:44 PM   #679
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I'm actually going to Baltimore Indy this Saturday (because ALMS race is on Saturday, lol). I'll bring my EFR so it can hang out with all the Indy cars
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Old 08-31-2012, 01:55 AM   #680
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double post every time i post a million images **** yeah!!!

Last edited by soviet; 08-31-2012 at 02:07 AM.
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