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R34 N1 Chra Same As R34 Gtr Chra?

drew6

By drew6,
in Engines & Forced Induction

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drew6 Rookie

drew6

Posted
Posted

I asked this on the Canada forum but I thought I should ask this here aswell:

I'm hoping someone has some experience with this...

I have a pair of R34 N1 turbos (14411 AA402), one in great condition and one that is very tight. No damage on the compressor wheel or turbine. I was looking at replacing the CHRA on the tight turbo but prices are outrageous and to be honest I'm unsure that I can find the right part. However, I also have a pair of regular R34 GTR turbos (14411 AA300) that are both in great condition. I am wondering if it is possible to use one the CHRAs from the regular R34 GTR tubos and replace the turbine/compressor wheel from the N1 turbos. Does anyone know for sure if this is possible? If it's possible it sure would be great lol.

Thanks in advance.

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

CHRA: 14411

It's the same. So of course it is possible...

However you are going to put steel wheels onto a 10yr+ old cartridge. In all honesty that's an absolute waste of time.

Going to all the effort to change turbos and then having two in varying condition on the motor...

And ole saying the poor man pays twice rings very true here. If just one fails you are going to spend more than you would have initially.

Don Dada Mentor

Don Dada

Posted
Posted

CHRA: 14411

It's the same. So of course it is possible...

I dont think that is the CHRA number because if so then the oem R32/R33, Nismo R32/R33 etc would have ball bearing cores too as they carry this same 5 digits at the beginning of the number.....and we all know for a fact they are journal

I think the chra is the other number under this number on the tag...???

drew6 Rookie

drew6

Posted
  • Author
Posted

Thanks for the replys.

The reason I'm doing this is because I'm doing a major engine rebuild and couples with some other things I have going on right now new turbo(s) arn't in the budget right now. Within the next year I hope to have new turbo(s).

Don Dada is correct that all the GTR turbos started with 14411.. So, I'm not sure that could be the CHRA number. Although, it sure would be great if it was haha.

discopotato03 Grand Master

discopotato03

Posted
Posted (edited)

I think the ball bearing Garretts are turbo number 702987-3 with cartridge number 446179-42 . They seem to be an OE spec turbo , well wheels anyway , and the thing to know is if their turbines are ceramic .

A .

Edited by discopotato03
sucram Rising Star

sucram

Posted
Posted

Im in a similar situation except mine are hks

First thing you have to figure out would be if garrett sell N1 chra's. Easier said then done. Matching wheel size's is one thing, profile is another.

You cant really ring someone up as I doubt they will know for sure.

If you use turbos that are slightly different it could surge.

You may or may not be able to get the turbo rebuilt. As far as I know Garrett Australia can balance them but rebuilding it seems costly and

most companies will suggest replacing the core. If it doesnt spin easily, it might be the bearing, but could also have damaged the shaft.

Best bet would be to send your turbo away and get them to quote on repair and let them know what it is and that its a PAIR. You might

get lucky and after they strip it and balance it could come up good (debris in bearing etc). Its a gamble cos it could come back stuffed

and you still need to pay for labour

Or you could look for another R34 N1 turbo

Or you could sell the one good one you have to recoup some losses and buy another pair

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