Think i have jammed my turbo!

Post Fri Jan 11, 2008 3:04 pm

I'm re building a turbo but the cold side wheel wont come off, nut is off all bolts holding the oil chamber to the front housing are off but i just cant get the wheel off! it will turn independantly but only just.
I need help its currently sitting soaking in oil to try and free it!

Thanks

Post Fri Jan 11, 2008 3:14 pm

how did you get the nut off the wheel? is it a reverse thread on the inlet side? i cant budge mine. are you getting it balanced by a professional before use?

Post Fri Jan 11, 2008 3:34 pm

A little HEAT maybe in order, I know mine needed to sit on the gas hob for 10 mins before it all came apart.

Nothing seized but the crap that builds up inside them can cause them to stick.

A little heat and a BFH should see it open up for you.

HTH, Mark.

Post Fri Jan 11, 2008 4:07 pm

Fuzzy, Yep mine is reverse thread as are all turbos i think i've already had it apart once but just bought the tool to remove the split wasters and now can't get it back apart!! i'm looking to try and balance it myself but might resort to finding some one if the price is right.

Post Fri Jan 11, 2008 7:06 pm

FIREBREATHER60 wrote:! i'm looking to try and balance it myself

You ar joking, right?
Jan

Post Fri Jan 11, 2008 8:22 pm

Yaninnya wrote:
FIREBREATHER60 wrote:! i'm looking to try and balance it myself
You ar joking, right?
Jan

Why?

It's not hard to do, although i have never done it i have seen friends building model jet engines using car turbo compressor's, they have to be ballanced at least as well as for a turbo.

What they use is a simple piece of alloy bar and a bearing.

http://www.5bears.com/bal.htm thats how a model jet company (Wren) recomend to do it

Post Sat Jan 12, 2008 3:55 pm

ok every thing has failed!!! the only thing left to try is heat so what do we recomend? fuzzy monster recomended the cooker but would a small blow torch be any better?

Post Sat Jan 12, 2008 3:58 pm

stonesie wrote:
Yaninnya wrote:
FIREBREATHER60 wrote:! i'm looking to try and balance it myself
You ar joking, right?
Jan
Why?

It's not hard to do, although i have never done it i have seen friends building model jet engines using car turbo compressor's, they have to be ballanced at least as well as for a turbo.

how come the professionals use machines that balance them at 100000rpm?

Post Sat Jan 12, 2008 3:59 pm

because they do it the proper way fuzzy

Post Sat Jan 12, 2008 5:30 pm

WAHOOOOOO done it! and with no damage well sort of...... tiny tiny mark on the little nob that is raised above the fins where the nut tigntens too, which i think i will get a way with ( i hope) thanks for your help guys, incidently does any one know some one who can ballence it?

Post Sat Jan 12, 2008 5:36 pm

blitz877 wrote:because they do it the proper way fuzzy

thats what i thought. ive got a spare t34 turbo with a larger .63 housing hotside and a 34mm restrictor on the inlet .i changed it for a .48 housing for better acceleration but i was wanting to rebuild it as a spare. it was smoking badly before i removed it on over run and when left idleing for more than a few minutes so would it be something best left to a pro or should a semi handy spanner man like me be able to fix it up before getting it balanced by a pro?

Post Sun Jan 13, 2008 7:01 pm

Yes ok, the pro's use high tech equipment costing thousands, the method i put up is a diy methad that is accurate enough for the small scale gas turbine engines that rev to well over 100K rpm.

It would be interesting if you tried it fuzzy, then sent it away to be done by a pro and get them to tell you how far out it was.