Hks Gt2835 Pro S Not Sounding Good

[R31 POWER]

Car is a R33 GTS-T with a HKS GT2835 Pro S kit, built motor 270rwkw on about 1.2bar. I bought the car about 3/4 weeks ago and it has always had a bit of engine noise at idle. I passed it off as it has forged pistons and thought it was them. Motor has'nt used any oil since ive had it.

Lately when i turn the car off it does'nt have that trade mark ball bearing turbo wind down, instead it has what sounds like crunchy bearings lol. Today as i just got it onto boost it made a scraping noise so i backed off. Then later in 3rd gave it half throttle and it could barely boost . Tried second and it was spooling ok but then that scrape noise again. Babied it home and now it's reasting.

Here's a vid

http://www.youtube.com/watch?v=GK__sdPQcz0...re=channel_page

It has shaft play up and down, back and forward.

How much would a new core be for this turbo?

[Tangles]

gone.

could be seals etc, but now will need new wheels, shaft, seals and balance.

ie a genuine BB garrett core (no front/rear comp covers) is around $800USD

for a rebuild expect around $800 to $1300

good luck, and yeah go a rebuild after getting as many quotes as possible. interstate quotes arnt an issue, honestly

GCG sydney

ATS or MTQ adelaide

Hypergear in melbourne

[R31 POWER]

It does have light scoring on the comp cover, just weird that it's shit it self since i have babied it since i got it.

Comp wheel doesn't look the best

[hypergear]

Normally the grinding noise came from the bearing cartridge, Its a common issue with BB turbo caused from engine oil contaminations. If your wheels and shaft are in good condition its just matter of replacing the bearing cartridge and seals. The small chips on the comp wheel can be machined off. cost wise is about $800AUD for every thing. You are likely needing a inline oil filter before fitting the turbo back on.

[discopotato03]

If you look on the turbos ID tag it should show a model number and or a cartridge number .

A HKS GT2835 Pro S turbo is basically the cropped 84 trim version of the GT30 UHP turbine with a 71.1mm OD GT35 series compressor in 56 trim .

According to my notes its cartridge number should be 700177-3 , or in long number speak 700177-0003 .

My list shows the unit number as 700382-19 for a 2835 56T , but this may not necessarily be a Pro S unit number because they have RB specific turbine and compressor housings .

Cheers A .

[The Dan]

A new cartridge is only about $800Aud, it has new wheels on it, get the CHRA number like Disco said and we can let you know exactly what it is, what's available and how much.

[R31 POWER]

Champions! I just had a quick look but the oil feed is in the way. After work tomorrow i will take it off.

Cheers guys

[R31Nismoid]

I'd be wondering what's made its way inside to damage the wheel in that manner.

The outside of the wheels are perfect so if the cartridge/bearings are failing its not major yet as the wheel hasn't touched the sides.

It more looks like bits of debris/dirt or similar has been in there at one or more points in the turbo's life.

You would replace that wheel too

Perhaps the turbo was swapped out just before you purchased

Make sure you pay some $$$ to find out what the failure was before getting too excited with the new turbo. If its lack of oil and so on there could be slightly blocked lines/pressure issues and other similar problems that if not fixed, will kill the rebuild turbo as well

[R31 POWER]

HJ 6027J

GT2835-56T

700177-5003

What does it mean?

[R31 POWER]

Edited July 20, 2009 by R31 POWER

[The Dan]

It's actually the smaller 3071 Garrett turbo

[R31 POWER]

Is that a good or bad thing? Also i noticed the oil from the oil line had a strong burnt smell to it. Im guessing there is a block in the feed somewhere.

[hypergear]

There there's oil feeding pin under the oil feeding port. The end pin size on it is 20 thou which delivers oil to your bearings. Normally that gets blocked with all sort of dirt. Your turbo starvs from oil and cook the bearings.

[wolverine]

It's actually the smaller 3071 Garrett turbo

The HKS 2835ProS is a cropped turbine version of the GT3071 so it looks correct.

[The Dan]

The HKS 2835ProS is a cropped turbine version of the GT3071 so it looks correct.

What looks correct?

[wolverine]

Hi Daniel

The ID tag should be the same as a GT3071 as far as i understand.

56mm cropped turbine and 71mm compressor.

[R31 POWER]

So does that mean i can get a GT3071 core and put my covers on? Will it still perform the same? Cost?

[The Dan]

So does that mean i can get a GT3071 core and put my covers on? Will it still perform the same? Cost?

Yes

http://www.turbobygarrett.com/turbobygarre...1R_700382_3.htm

[The Dan]

Same turbo

[R31 POWER]

Excellent. Does that cartridge already come comp/ exh wheels attached? Will it need to be balanced? I should just PM you haha. Cheers for your help!