Turbo Blow Job...

[Medium Dave]

Ok this may seem like a silly question, but I blew my turbo this week, and while I wait for the replacement 2nd hand unit to arrive (thanks Odessa) I decided to pull apart the old one to see how it works (its a rainy sunday in Tas, Im bored) and I discovered that the compressor wheel looks pretty untidy, the fan blades are ground off to the right shape, leaving the edges all messy, I have seen photos of compressor wheels with sharp fan blade edges so I wondered if I could tidy it up a little with some sandpaper, so I set about cleaning up a few blades...

Im not really expecting any gains, but I figure if I am trying to flow 165'ish kw through this little wheel a bit of a tidy up couldnt hurt? am I gong to do it any harm by doing this to the replacement turbo? is this part of what happens when a turbo is 'high flowed'?

[Suspense]

i thought u reverted to getting blow jobs by sticking it in the turbo

[Medium Dave]

Yeah, ok before this thread gets silly , I dont have a lot of cash -hence the standard replacement, but what I do have is patience, and if this will give the new turbo a bit easier time of it then I will do the job...

Edited July 30, 2006 by Medium Dave

[Mr. Oizo]

if you sand the blades, they will be uneven and unbalanced wont they?

[Munkyb0y]

good point. if u take a bit off here and there it'll affect balance.

not that i know what i'm on about, but after dark pointed it out, it's obvious.

lol

[Medium Dave]

I was thinking that too, but it dosent seem like they have gone to any great lengths to balance it from the factory, plus im not taking all that much off, just the dags from the grinding process...

Edited July 30, 2006 by Medium Dave

[Slide]

If you modify the compressor wheel in any way its a sure fire way to cost yourself a turbo.

Balancing is the most important part of making the turbo and the slightest imbalance will cause it to die.

If the replacement turbo has damaged or worn blades it wont last very long anyway.

[Medium Dave]

Cheers, I will leave it alone then

[FATGTS-R]

In which way did your turbo give up? Maybe the rough edges came from excess shaft play causing it to slightly catch on the housing?

[Medium Dave]

Yeah, it was too much shaft play, I could move it enough to touch the exhaust side but I wasnt able to make it touch the inlet, hmm it seems it was on a bit of a self distruct mission

So what happens when a turbo gets a 'high flow' job?

[geno8r]

So what happens when a turbo gets a 'high flow' job?

The turbo blades get grinded down, not the compressor blades. Don't touch the compressor wheel!

Edited July 30, 2006 by geno8r

[DVS-31T]

Yeah, it was too much shaft play, I could move it enough to touch the exhaust side but I wasnt able to make it touch the inlet, hmm it seems it was on a bit of a self distruct mission

So what happens when a turbo gets a 'high flow' job?

a gcg hi flow which in my mind is the best (only) option due to the the fact of the use of ball bearing! new wheels which are larger about t4 size i think, shaft gets ground down a tad and new oversize bearings and cartridges. heaps bigger on the turbine side same size as the housing, everything gets machined cleaned rebuilt everything is new pretty much. im runiing one of these and found it to the best option for the cost $1650 trade price and now running 240 rwkw on 16 psi with microtech and the usual bolt on stuff

[ODessA]

yeah my gcg highflow is awesome definately a very good option for turbo upgrade

but yeah a healthy turbo comp wheel wont have shavings like that on it dude they would have happened when ur turbo failed or sometime not long before it.

if u opened up the turbo i sent you it wouldnt need to be cleaned up anyway, well i hope it wouldnt ive never opened it

ur like me though, patient and will fiddle around with stuff