Got torque? 345ft/lbs - NO LOSS IN SPOOL :D

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Nov 22, 2006 | 03:17 PM

#16

CBRD

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From: york, pa 17402

doesnt look like a boost spike to me....

its pretty noticeable on the MD

cb

Nov 22, 2006 | 05:45 PM

#17

Gruppe-S

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From: Santa Ana, California

Quote:

Originally Posted by TTP Engineering

Interesting.

Maybe we should overlay this STOCK 2005 TURBO with this 42lb turbo dynosheet.

Somehow I am not seeing the benefit.

This was done a year and a half ago.

I'm not sure I can comment on your car. I know it's incredibly fast, but to hit 400whp on our dyno here - even on C16 race gas - you're talking GT3076 or GT3037, no less. I have lined up quite a few power curves with the 42lbs there is no spool loss over the 16G and an extra 30-40ft/lbs of torque. Having done quite a few 5 blade and 6 blade 20G's, I would say this turbo makes the midrange torque than the 20G's make, but with less lag. It won't make the same top end though, for obvious reasons.

Cheers,

Gary
Gruppe-S

Feb 8, 2007 | 06:26 AM

#18

Evo8Master

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From: Cali

What happend to this turbo??? Is it going to be available???

Quote:

Originally Posted by Gruppe-S

Hey guys,

Just wanted to give you guys a quick glimpse of a 42lbs turbo we are testing. This turbo is going to be great for you guys wanting stock turbo spool-up and boost response. The turbo is based off the 16G platform with a larger 42lbs compressor wheel. Unlike the larger 20G-5/6, this turbo has a much smaller exducer diameter which means better response and spool up but better midrange than the stock turbo (even the EVO IX!).

Here's the graph on ~98 octane mix @ 1.8 bar. Was breaking 355ft/lbs on a few pulls, but we were getting an occasional misfire in the midrange so we backed it off a bit. More details to come

For reference a stock turbo at @1.8 bar will do about 310-315ft/lbs and about 320whp. While the top end is not substantially difference, there is a huge difference in area under the curve.

Sorry our scanner is out of commission

Cheers,

Gary
Gruppe-S

Feb 8, 2007 | 06:42 AM

#19

bigric09

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From: Spec-Ops Motorsports, Fayetteville, NC

the numbers just arent impressive with those mods... i have the HP beat myself and i hit full torque 305 by 3000 to 3200 rpm's. we also have a guy down here running a 20G who put down over 400 tq on buschurs dyno and i think 375 hp.... again, not to say this turbo is crap, just seems a bit low to be boasting about not losing spool.