Putting R33 Gtr On A Weight Loss For Superlap

[Travis Trayhern]

Well thought my r33 gtr was abit fat for superlap so i set out this weekend on ripping out everything not need and removing last sessions sponsor stickers off the car.

started with the stickers and cracked it about halfway threw as its most of the car was wrapped lol

so started on the engine bay removing all the aircon bits got to the compressor and had to remove the front turbos intake piping.

i almost fell over backwards with what i found.

aaaahhhhhh!!!!!

front turbo

rear turbo

Now this engine and turbos are only 2000km old!!!

using garret -5 turbos

What should i do guys any ideas on cause and what am i looking at for a rebuild of the turbos? should i get bigger compressor wheels fitted while im at it for abit more puff?

well there goes my superlap entry money maybe next year

[R31Nismoid]

-5's are capable of 400rwkw easily enough, do you really need more than that?

As for rebuild, $1200ea would be my guess. Cartridge is around $1000, then you need new front wheel.

Rear side will all be ok. Same for the housings front/rear.

Prices are estimates only, also good luck with actually getting parts to rebuild them with, that could be an issue seeing as though -5s are always in short supply.

Cause - obviously debris. Poor air filter, or poor pre-assembly with something getting inside.

[PM-R33]

Wow very unfortunate man. What filters were on there?

[bradsm87]

My GT2871R wasn't that bad but it was noticably worn. That was after 10000km and have always used Apexi air filters. Very bizarre. I just pulled the compressor housing off and cleaned the wheel and smoothened the rough bits on the fins with wet n dry. I'd just do that and spend the money elsewhere on the car.

[Travis Trayhern]

brand spanking new apexi filters where used when it was built, but i have a good idea what has caused this and where the debris as come from.

run in tune i didnt have a bov setup with my hard piping kit and it would carry on not ide properly so i gave the std bov's to my tunner and he welded them in and made up a full return (metal) piping back to the turbo inlets like factory.

and turbos where fine after the run in tune........... im guessing some welding slag wasnt removed from the custom piping made what do you guys think? how should i go about it aswell?

cant see anything else causing this as the chances of debry going threw 2 differnt filters to damage both turbos is very unlikly.

if its going to cost $1000 a turbo to rebuild whats the point? might as well just go single setup what do you think just t04z?

[R31Nismoid]

Well...

Manifold - $1200

Ext Gate - $600

t04z - $2000

new piping, lines, dump, fittings - $700

So its either 4.5k or 2.2k... plus a t04z IMO for a stock capacity is to big to be competitive for any tarmac/circuit stuff.

[Travis Trayhern]

im just sick of working on the stupid low mount turbos i have had enough of pulling them on and off.

yeh -5 are great though

surely it couldnt be that expensive just for a compressor wheel.... is there other options other than genuine garrett replacement parts?

and should i be footing this bill to be rebuilding them?

Well...

Manifold - $1200

Ext Gate - $600

t04z - $2000

new piping, lines, dump, fittings - $700

So its either 4.5k or 2.2k... plus a t04z IMO for a stock capacity is to big to be competitive for any tarmac/circuit stuff.

[R31Nismoid]

Well im assuming worst case. The wheels look rather damaged, there could have been some cartridge damage internally with it being off balance.

Problem is though, once you pull them apart to find out, you have to rebuild them anyway.

So you could gamble it i guess, but if you gamble wrong then it could be turbos out again soon after installation.

As for who should be footing the bill - thats an argument for you and the fabricator.

Trying to prove such i think i'd imagine to be rather difficult.

[saliya]

Now this engine and turbos are only 2000km old!!!

using garret -5 turbos

What should i do guys any ideas on cause and what am i looking at for a rebuild of the turbos? should i get bigger compressor wheels fitted while im at it for abit more puff?

The most economical option is probably to find someone that's had something similar happen to one of their turbos and buy the other; but then you have to go through the figuring-out-if-it's-ok process.

$1000-$1200 is probably close to the money; but for those kinds of dollars I wouldn't be looking at a rebuild at all.

http://www.horsepowerinabox.com/HPIAB2/category12_1.htm

Cheers,

Saliya

[JAGR33]

Travis - seems like you need to look at 'other' options when it comes to the tuner/mechanic working on your car. Firstly melting n0.6 piston from a bad tune and then stuffed turbos for whatever reason.

Its best tu use the standard blow-off valves/piping/return etc.. Don't understand why one would have that all custom fabricated.

Well it's happened now so I would recommend you rebuilding the -5's, T04Z will not suit your application.

Good luck with it all....

[Travis Trayhern]

tuners was changed after melted piston, even changed state. also all my pipe work was fabricated to be used with out a std return sytem to the bovs, so the wheel had to be re invented in this case and everything custom made.

[bigmikespec]

Surely you can have them rebuilt with new wheels only and not have to change cartridges. If so you should be right otherwise I would go single too, sell off the dumps, front pipes, manifolds and turbos and you should recoup some of the cost.

[Travis Trayhern]

have contacted garrett and they can supply new compress wheels for $800 the pair.

[Travis Trayhern]

they can also supply larger front compressor wheels for the same price but would require machining to fit so there would the extra cost there. might just get replacements and get it balanced up, my tuner recons it might be peices of the apexi filters being suked through, also said if it was welding slag it would have totally minced the wheels.

[gtr fan]

What do the filters look like? Any noticeable holes etc?

I am no expert but given the number of people that run these filters you don't really hear of them coming apart.

Would it be possible that some material maybe left behind the compressor blades and you may see whats in the once the covers are off?

[Travis Trayhern]

just got my mate back home to take the filters off the afm and check, when pulling it apart had a nice rattle inside the afm with a few shakes a 1mm bit of welding slag came out, also the afm's mech where riddled with hole and the hole had been made by the material trying to exit rather than coming from the filter side.

[R31Nismoid]

they can also supply larger front compressor wheels for the same price but would require machining to fit so there would the extra cost there. might just get replacements and get it balanced up, my tuner recons it might be peices of the apexi filters being suked through, also said if it was welding slag it would have totally minced the wheels.

nah, not totally minced the wheels.

depends on the size of the metal pieces etc. That looks like minor bits as you've found out

[GTScotT]

have you contacted hypergear? he may be able to replace the dusted wheels for a better price, he seems to be that way.

im guessing that metal is either lodged somewhere int he intercooler or injested by the motor.. yet if on a budget if look at removing and cleaning everything and perhaps running with the turbos as is, as im sure you have been already for quite some time.. dont miss out on superlap... but make sure you flush the entire system out before you go any further..

i dont see the harm in using that turbo for now, provided its solid

[bigmikespec]

$800 a pair... plus labour to rebuild/balance. Maybe you can fit MHI wheels in there they are half that price!

[Travis Trayhern]

Mate just sent me a few pictures that shop the material was trying to get out b4 it was suked back down into the turbos and a peice of slag that was still rattling in the afm.

the only place this could have come from is the bov returns?