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Gt55 Or Gt60?

TwinTurboM3

By TwinTurboM3,
in Engines & Forced Induction

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STATUS Grand Master

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thank you very much. RB family has been helpful and also was a source of inspiration.

i will test different A/R s on the exhaust side, different cams and try to find the best combo on my Dynamics. BTW you Aussie people have a wonderful Dyno, and i am also a lucky owner of dynamics dyno as well.

dyno dynamics are ok but if your serious there is only one dyno and that is DYNAPACK..... far less hollywood, far more accurate and repeatable (especially at the kinda power you are talking 800hp and up) and no harder/longer to setup than a roller.

fkn sweet cars BTW i would love to drive that twin turboed bimmer.

Slide Grand Master

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Posted
Posted
dyno dynamics are ok but if your serious there is only one dyno and that is DYNAPACK..... far less hollywood, far more accurate and repeatable and no harder/longer to setup than a roller.

fkn sweet cars BTW i would love to drive that twin turboed bimmer.

Not harder or longer to set up then a roll on dyno??? lol

Ill stick with the rollers.

HP on dyno's is Hollywood full stop regardless of the type.

Nice setup on the M3 :)

TwinTurboM3 Contributor

TwinTurboM3

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I'd be having a look at what borgwarner/airwerks have to offer. They do a 91mm turbo and a few other sizes between that and the gt60 sized compressor which is huge.

Precision has a range of 91 - 94 - 98 - 101 mm compressor wheels but i want to stick to Garrett.

A 98 mm falls between a Gt55 and Gt60, but i insist on Garrettt.

TwinTurboM3 Contributor

TwinTurboM3

Posted
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Posted
dyno dynamics are ok but if your serious there is only one dyno and that is DYNAPACK..... far less hollywood, far more accurate and repeatable (especially at the kinda power you are talking 800hp and up) and no harder/longer to setup than a roller.

fkn sweet cars BTW i would love to drive that twin turboed bimmer.

Thanks mate.

I drove the 2.8L twin 2871 for 10 kilometers, then we decided to change the ex manifolds, and i fabricated tubular manifolds. as it is a hobby, it took some time. And a bigger intercooler is in place.

first minutes engine did not pass over 5000 rpm. I was shocked. Boost was 3 psi. Then i realized the ECU had a safety rpm cut at 5000 rpm. Removed the limiter.

During that 10 kilometers test drive, it was like sex driving twin 2871 2.8L

Now, with the 3,2L and 3,9L capacity, the feeling (power) may be amazing, assuming all go well.

Dynapackk, more time involved for wheels etc.

But you guys should be proud of Dynamics, what a consistency and quality.

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