Game ova

Well, my turbo gave up the fight 2 days ago (On3 7875). Was going to just rebuild it and let it ride, but then find out about the On3 Gen 2 unit. Says its good for a little over 1krwhp, anyone here have any experience with this unit? And is the compressor cover the same size as the Gen 1 unit? I ask because the compressor cover is very important aside don't have anymore room before i hit the radiator. I would call, but they are closed....kinda excited about this new turbo.

C5_Pete

iTrader: (8)

Game ova

Their website, no mention about compressor cover being same dimensions as Gen 1 though.

C5_Pete

iTrader: (8)

Game ova

Agreed, not much info. Would be nice if they had something with more turbine but was still a 3 inch turbine/ downpipe exit, so this 6.0 could really cut loose. But i would settle for this, although hard....because I can get the rebuilt center for under $300 for the Gen 1.

ls3fox

have you looked at the 79/78 from vs racing it has a 78mm turbine with a 1.15ar t4 and a 4" v band

MY_2K_Z

iTrader: (1)

What about the 8883, the exhaust side would need a little work but the compressor side looks to be the same size.

Game ova

Not downing the product, but is a bit price prohibitive for me.

This is doable, although I really don't want to pull the downpipe to re flange. I just got done studying it, and I just might be able to get it off without pulling the radiator. That would be primo.

RICE ETR

iTrader: (3)

If you are talking about the BMF, a guy local to me made 742rwhp through a TH400, built 5.3, lil John cam and I think 25lbs of boost...using a Huron speed kit.
I think the only comments were it spooled stupid fast (as in too fast and not rod friendly) and seemed to take a lot of boost to make power. He may be on this forum and able to give you more info.

RICE ETR

iTrader: (3)

Oh and the power did carry to 6800-7k where he left I off I believe. Car went bottom 9's at 147ish I think. It's a full weight fbody with cage, chute, etc.
edit it's an ON3 kit. No times in this video but I think he is on the limiter up top due to rear gears.

C5_Pete

iTrader: (8)

Game ova

Hmmm, that does seem a bit high (boost wise) for the power. But then again, I guess there are other things to consider, timing, DA, so on and so forth. But after seeing this vid, I wonder if it would be worth it. I've got decent rods, so the quick spool up doesn't scare me to much. Need to get out there and pull the old unit to see if i can pull the downpipe without pulling the radiator, but this heat is brutal.

RICE ETR

iTrader: (3)

Let me see if I can get the exact details, don't want to lead anyone wrong.
The dyno was through an unlocked 400 & ET Street R's, so his weight and mph matter most, which I am also unsure of the most lol.
The fact that it carried the power to the limiter with that turbine says to me it's working, just maybe not as efficiently as we'd like to see.

RICE ETR

iTrader: (3)

9.2@ 148, 3750lbs, 24-25 lbs.
My old-age-itis is showing through

Game ova

Man, that car is nearly identical to mine. Weighs the same, same trans, same tires, same power. His is just faster lol.

MY_2K_Z

iTrader: (1)

That's also on a 5.3 where the 75mm turbine is better suited. I'd seriously try to find a turbo with a better suited turbine for a 6.0 I'm sure the back pressure at 20 psi is unreal and killing the power up top. I know I can feel the power nosing over on mine around 5800.

C5_Pete

iTrader: (8)

Game ova

Not necessarily, I've watched another f body run 9 teens @149.... showed 735whp on the dyno. My car doesn't make 750 either, but leaving in boost, I think it would get close on the trap.

NicD

iTrader: (7)

A 7675 that is good for over 1000 rwhp on an LS? Nope, not unless it's one of those happy dynos that's for sure. Only 76 that will do that is a fancy new Gen2 GTX Garrett or a cut down race class spec 76mm, both of which are 3 times the price and for good reason.

sbcgenII

iTrader: (1)