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Garrett Gt2860 -5 Or Gt2871r

Phantom Snail
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Phantom Snail

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Hi guys .... need some info, input, graphs if possible on the following question ...

Tried to search up some info ... found stacks of gt2860 -5 threads .. not many gt2871r threads ...

Base -

1 - R34 rb26dett engine standard internals

2 - poncams stage 1, 800cc injectors, 044 fuel pump, fpr, aftermarket exhaust, boost controller, aftermarket ecu, twin plate clutch

3 - R34 standard fmic, R34 standard oil + water pumps

Which 1 -

1 - Garrett GT2860 -5 aka gt2530

2 - Garret GT2871R aka gtrs

Which turbo would you choose and why ... from what i have gathered so far -

1 - gt2860 - 5 is responsive and makes about 350awkw on a stock rb26dett motor with supporting mods .. however the power is linear, so doesn't feel as though its moving as fast as it really is in conjunction with the weight of an r34, and feels as though its not pushing real hard towards the red line ...

2 - gt2871r is a little bit less responsive, however makes an easy comfortable 370awkw with a lot more potential however its not soo good to push a healthy stock rb26dett engine too much past this power level, otherwise you can kiss the motor goodbye in the near future .. Power is more aggressive and you can feel it .. and pulls effortless all the way to redline ..

- What is the max healthy power figure and boost figure that an unopened r34 gtr motor can handle without much issues?

- Roughly what rpms do each turbo make full boost by [about 20psi]

- Does any1 have graphs of a gt2860 -5 vs gt2871r on unopened rb26dett motors?

So yeah .. basically which turbo is better and why ... comparisons .. pros and cons .. do's and dont's

Cheers

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Hi Jase

Please have a go @ the search button.

-5's (2530 eqiv), -10's (GT-RS equiv) and -9/-7 (GT-SS equiv) are so well covered in depth, as are the limits of the stock motor and so on.

There is a RB26 dyno thread with result upon result, please have a look and a further go at searching as there is only so many times people can answer the same questions.

Thanks

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