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Rb20DET high flow upgrade or newy?

negativecamber
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negativecamber Collaborator

negativecamber

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hey guys/gals

i don't know a lot about the skyline motors and since i have just converted my S13 silvia to rb20det, i just had a few questions to ask...

what is the stock turbo on a silver top rb20det?

is it easier (or much less) to high flow a R33 turbo or just buy a second hand 2530 turbo?

is there a lot to be gained by high flowing the stock turbo's? i did a search but it came up with a lot of side tracked posts.

thanks

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https://www.sau.com.au/forums/topic/68395-rb20det-high-flow-upgrade-or-newy/
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Sydneykid Grand Master

Sydneykid

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Ball bearing hi flow is the best for all round performance and obviously it bolts straight back up from whence it came. No aftermarket turbo will do that. The ball bearing hi flow from GCG will reach the power limit of the standard engine ineternals. I have used a number of them and they are the ONLY turbo I have found that I can get more power EVERYWHERE than standard.:rofl:

inissane Proficient

inissane

Posted
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Ball bearing hi flow is the best for all round performance and obviously it bolts straight back up from whence it came.  No aftermarket turbo will do that.  The ball bearing hi flow from GCG will reach the power limit of the standard engine ineternals.  I have used a number of them and they are the ONLY turbo I have found that I can get more power EVERYWHERE than standard.:rofl:

to clarify, if you will, do you mean high flow the stock rb20det turbo through say GCG? Is this turbo ball bearing stock or is that done when high flowed?

also i thought the rb20det internals would handle something like 250rwkw (is that right?, though i know injectors, afm, ecu etc need modding), surely the high flow doesn't get that much??

Sydneykid Grand Master

Sydneykid

Posted
Posted
to clarify, if you will, do you mean high flow the stock rb20det turbo through say GCG?

Yep

Is this turbo ball bearing stock or is that done when high flowed??

Both

also i thought the rb20det internals would handle something like 250rwkw (is that right?,

Yep, but it does very much depend on the condition of the engine.

though i know injectors, afm, ecu etc need modding), surely the high flow doesn't get that much??

The GCG ball bearing hi flow produces enough airflow for 265 rwkw out of an RB25, done it quite a few times. There is no reason why an RB20 would be any different, as long as it has the right mods and the engine is in good enough condition.

Hope that answered your questions.:rofl:

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