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Author Topic: 45 trim t3/t4?  (Read 2414 times)

November 26, 2007, 01:51:31 pm

the4ork

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45 trim t3/t4?
« on: November 26, 2007, 01:51:31 pm »
going to go with a bigger turbo on my diesel... wondering if a 45trim t3/t4 /w .48 and stg1 wheel will be too big...

it will have a giles pump so i have 5k rpm to play with, i'd like to be at least seeing a few psi by 3k rpm, looking to boost 25psi

the 3 turbo's ive had in mind are a t3 .60 on the small side, super 60 and 45trim t3/t4...

oh the choices
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Reply #1November 26, 2007, 08:26:43 pm

vanagonturbo

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45 trim t3/t4?
« Reply #1 on: November 26, 2007, 08:26:43 pm »
you are going to need a ball bearing turbo. Dont waste money on buying a turbo if its not ball bearing. My GT25r sits on my toolbox yelling at me everyday.
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Reply #2November 27, 2007, 03:54:33 am

flapjack

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45 trim t3/t4?
« Reply #2 on: November 27, 2007, 03:54:33 am »
have you tried a calculator like this?
http://www.not2fast.com/turbo/glossary/turbo_calc.shtml
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Reply #3November 27, 2007, 01:56:41 pm

the4ork

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45 trim t3/t4?
« Reply #3 on: November 27, 2007, 01:56:41 pm »
yeah but its hard to say... whats the volumetric efficency? where do you tell it your compression ratio? what air/fuel do i tell it...

its hard to use
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Reply #4November 27, 2007, 02:57:13 pm

935racer

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45 trim t3/t4?
« Reply #4 on: November 27, 2007, 02:57:13 pm »
If you don't want to dish out the bling for a BB turbo than go with .48 ar on the turbine, sgt 1 wheel and a t3 compressor, .42 ar and either a 45 or 50 trim.
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