Spool time ??????

[zimmer0924]

Any body have an idea on when a GT42-76 & GT47-80 would start to spool and also top out. I would be going for the smallest turbine A/R for both. I think the GT42-76 smallest A/R is .81 and the GT47-80 is .96. Stock engine for now, want room to grow in the future. I understand this is a hard question to ask because so many things come in to play. So if any one has a really rough answer that would be great. I'm stuck between these two.

Thanks to everyone for your help.

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[batman]

id say around 3K-3,200

 

[Bigturbonotch]

go with the 76 mm for now....

 

[zimmer0924]

id say around 3K-3,200

Is this for the GT47-80 with the .96 A/R too? Or just the GT42-76 with the .81 A/R?

Thanks again guys.

 

[Bigturbonotch]

go with the 76mm with .81 a/r

the spool will be good, there a a lot of guys running that turbo on mod motor cars.

The 80mm is a little large and the spool with the .96 wont be until around 4k.....

 

[batman]

Is this for the GT47-80 with the .96 A/R too? Or just the GT42-76 with the .81 A/R?

Thanks again guys.

smaller turbo

 

[zimmer0924]

4K.....Crap

 

[Slow99x]

Going with the "R" version should drop spool rpms by 500.

 

[Bigturbonotch]

no it will not.......plus they are more costly to repair and not worth the $$$$$$$$$$$$$$$$ spend it somewhere else. You will have no problem spooling that 76mm turbo and it will be plenty for your stock motor (assuming)

 

[Bob_Kurgan]

ive done a few on the dyno... call me tomorrow night and ill look at the dyno sheets.. ill be on the dyno from 6-9pm doing a twin turbo mustang (1100rwhp) deal..

 

[IZZy]

ive done a few on the dyno... call me tomorrow night and ill look at the dyno sheets.. ill be on the dyno from 6-9pm doing a twin turbo mustang (1100rwhp) deal..

can i come over and get some training for fri.?

 

[Bob_Kurgan]

can i come over and get some training for fri.?

call me tomorrow but i dont think so... its kind of a closed session LOL..

 

[IZZy]

call me tomorrow but i dont think so... its kind of a closed session LOL..

ohhh ok I see, I call u

 

[Slow99x]

no it will not.......plus they are more costly to repair and not worth the $$$$$$$$$$$$$$$$ spend it somewhere else. You will have no problem spooling that 76mm turbo and it will be plenty for your stock motor (assuming)

I had a Garrett GT30R on my Eclipse and it reached 27psi earlier than a smaller 50trim by more than 500rpm. The center section of a dual ball bearing turbo is MUCH more reliable than a thust bearing turbo. I don't know where you are getting your info.

 

[zimmer0924]

Fantastic. You all are all knowing.

Thanks.