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Converting To Steel Wheel Turbos

gtrboosting

By gtrboosting,
in Engines & Forced Induction

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gtrboosting Collaborator

gtrboosting

Posted
Posted

Hi I just bought a R32 GTR and i dont want to go all out and buy new turbo's. Only want 250awkw. Alot of people have said its worth replacing the standard ones or getting them rebuilt with steel wheels. Has anyone here rebuilt theres with steel wheels? How much did the whole thing cost? Also anyone recommended in the Brisbane area? After rough prices. Thanks!

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Hi I just bought a R32 GTR and i dont want to go all out and buy new turbo's. Only want 250awkw. Alot of people have said its worth replacing the standard ones or getting them rebuilt with steel wheels. Has anyone here rebuilt theres with steel wheels? How much did the whole thing cost? Also anyone recommended in the Brisbane area? After rough prices. Thanks!

Around the same price as what the smallest Garrett upgrades are for the RB26 :laugh:

So considering they only make 40-50rwkw more (with more boost obviously)

Your better off replacing them with those, and just not cranking boost into it. Same response as stock virtually.

MrStabby Grand Master

MrStabby

Posted
Posted

Slide used to do a pair of highflows for $1600, and CRD and others do a pair of garretts for $2500. Non-slide high flows will probably be more expensive, as Slide had good prices.

I have some follow on questions, as my turbos have done 100,000km so i'm looking at these options.

- would a rebuild be about the same cost as a highflow?

- are there other ancillary costs when going to the garretts (mods to reduce oil flow? new lines?)

- how much different is the spool response? Nismoid, does "Same response as stock virtually" mean that the garretts are a tiny bit slower but its barely noticeable?

tacker Mentor

tacker

Posted
Posted

Yep there are a few, but not a great deal of cost in replacing the stock ones which are garrett anyway.

As you will need to remove the exhaust manifold you will need some new gaskets, copper washers for the oil and water lines to the turbos. also you will have to alter the bolt holes in oil return line, as they the new turbos for some reason are a few mm closer than the stock items.

New 2860-5 turbos have oil restriction in place so if you use these that is covered and stock lines match up.

Responce would be relevant to which turbo you choose, either 2860-5 or 2860-7 i believe that the -7 is roughly the same as a GT-SS and the 2860-5 simular to the HKS 2530. I have the 2860-5 and they spool roughly about 500 rpm higher than stock units.

you can pick these up new for about 1200 each with new actuators.

Ohh and about $8 for the largest box of bandaids you can get ( box of 500 will do )

MrStabby Grand Master

MrStabby

Posted
Posted
As you will need to remove the exhaust manifold

Bugger...

Responce would be relevant to which turbo you choose, either 2860-5 or 2860-7 i believe that the -7 is roughly the same as a GT-SS and the 2860-5 simular to the HKS 2530. I have the 2860-5 and they spool roughly about 500 rpm higher than stock units.

500rpm is too much for me. How much are the -7s?

Ohh and about $8 for the largest box of bandaids you can get ( box of 500 will do )

You mean more bandaids than usual.....bugger again.

tacker Mentor

tacker

Posted
Posted

the 2860-7 i dont know, better some one who has installed them comments.

Forgot to mention the $50 for the WD40 to spray the exhaust manifold bolts for a week befor even attempting undoing one of them.

Is a very sad story on here about what i went through doing mine see if i can find it

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

HKS 2530's are a bit more than 500rpm, coming "on boost" is different to delivering peak psi.

They make in excess of 100rwkw more, they are not going to have "as similar" response at all.

GT-SS/-7's are so close to stock, and the 2530 (-5) dont really get going till around 4000rpm.

gtrboosting Collaborator

gtrboosting

Posted
  • Author
Posted (edited)

Ok so what you guys are saying is that you can purchase new turbo's for the same price as having your stock items high flowed or rebuilt with steel weels?

What boost is safe with the standard 130,000km old turbos? around 12-13psi? keep in mind the car isn't being thrashed. Just a squirt now and then.

Edited by gtrboosting
tacker Mentor

tacker

Posted
Posted

mate from what i know and i am sure to be corrected its a lottery. With 130k on them i wouldnt go any high than your current boost setting.

Some get away with running higher boost and there are plenty on here that have not. Scarey part is if they fail it can cost you your engine if you are unlucky.

gtrboosting Collaborator

gtrboosting

Posted
  • Author
Posted (edited)

hmm well i dont like the idea of buying a vehicle and instantly having to replace the turbos haha.. stupid turbos. I don't see why the turbo's go so quickly on the GTR's more then any other car? say a 180sx or gts-t. maybe 10psi will do :)

Edited by gtrboosting
tacker Mentor

tacker

Posted
Posted

not so sure they go so quickly on a GTR, if the boost was left at factory levels i dont think you would have a problem with the ceramic exhaust wheel. Its only when we up the boost that the problems can occur.

aphid Proficient

aphid

Posted
Posted

on any other single turbo car chances are when the rear ceramic wheel disintegrates it's not going to take your engine with it, however with the twin turbo there is a very good chance that parts of the turbine are going to be sucked straight back into the engine, and the price of replacing one turbo skyrockets to the price of the turbine and a complete engine rebuild :)

IanB Veteran

IanB

Posted
Posted

I have a set of R34 standard turbos that might be good for your application. They are a ball bearing T25(? I think) ceramic wheel turbo. They are said to be good for 17 PSI, they have no shaft play at all. Chasing 1k however im open to offers, with a good exhaust they will probably see better response then a rebuilt R32.

aphid Proficient

aphid

Posted
Posted

lol i don't know if i'd risk 17psi through them ian.. they're still ceramic wheels at the end of the day so really they're not that much better than the original r32 items..

from what gtrboosting has said it sounds like he's more after reliability than performance, and the best way to go about this would be either to get the original turbo's rebuilt/highflowed with steel wheels or just upgrade to newer, steel wheeled turbines..

basically what i'm trying to say is, ceramic turbines are shit :)

djr81 Grand Master

djr81

Posted
Posted (edited)

Well unless you want to reach a higher level of hp you are better off selecting the smaller of the two Garrett turbos. Have a look at the compressor maps (turbo by garrett website look up 707160-5 & 707160-7). Now whilst I am no great fan of the -7's efficiency if you want less than 400rwhp the -5 will be largely wasted in this application.

Oh & get some decent dump pipes whilst you are about it. No reason not to.

Lastly, going all out usually encompasses a little more than new turbos. :)

Edited by djr81
MrStabby Grand Master

MrStabby

Posted
Posted
What boost is safe with the standard 130,000km old turbos?

Pretty sure the service manual states that the stock turbos should be rebuilt at 100,000 kms. Not following that is asking for trouble. You wouldnt run the cam belt past its service interval, so why do so with turbos? So i say no level of boost is safe as your operating outside the turbos service life. Of course, its all about risk...

gtrboosting Collaborator

gtrboosting

Posted
  • Author
Posted (edited)

ok theres no way of knowing if my turbo's have already been rebuilt though with out taking them apart right? If i get someone to check the turbo's for me and they are still in good condition i asume it would be safe to run more boost through them.

Edited by gtrboosting
djr81 Grand Master

djr81

Posted
Posted

If you are sufficiently concerned about it you can buy youself some second hand stock turbos off a car that has only ever run stock boost & with fewer kms. They can then be inspected/rebuilt/whatever to within an inch of their lives. Somewhat fortuitously I have some for sale... :(

http://www.skylinesaustralia.com/forums/in...=178971&hl=

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