Author Topic: Turbo balancing (Read 2286 times)

dillenger1 · « **on:** January 18, 2008, 03:14:03 am »

I read somewhere that t3s are balanced internally,meaning that if you rebuild them and put them back together then they dont need rebalanced?As long as you scribe the housing and return it to original when assembling.Is this true?

TedV · « **Reply #1 on:** January 18, 2008, 08:24:01 am »

I marked both the turbine and compresor wheel with sharpie before dissasembling, then shipped it off to G-Pop shop for balance check. It came back with a few new grindings meaning it needed balancing. Since I purchased a kit at same time, they reduced the balancing charge. for the price of a tank or 2 of fuel, is it really worth it to risk not doing it?

do ya feel lucky? :wink:

instruction say finger tight on the shaft nut, then 1/4 turn on my turbo. I put the compresor wheel mark 1/4 turn off the turbine mark so that when turning the nut the lines ended up matching. Seemed obvious to do that to me, but might not be to others.

myke_w · « **Reply #2 on:** January 18, 2008, 08:25:07 am »

you can tell by looking at the nut on the compressor side, if part of it is ground away, then it is externally balanced and you have to scribe locations, if not then generally each piece is balanced and it can be bolted back together to anyway you like.

914turboford · « **Reply #3 on:** January 18, 2008, 09:13:32 am »

If you mark it before disassembly then reassemble to the mark it will be balanced the same as it was before the rebuild. Turbo rebuilders will tell you no but they want your business. I asked a turbo builder why you need to rebalance and he said it was to correct for turbine wear. If it was in balance before the rebuild then it will be in balance after. If you file or grind any fins then all bets are off. I rebuilt my Holset HX35 (for my Ford 2.3t powered 914) and have had no detectable imbalance issues.

dillenger1 · « **Reply #4 on:** January 18, 2008, 03:37:54 pm »

Ya know what your right.Why would I even chance it .Why put all this money in to something ,just to have catastrophic failure,trying to save a humdred bucks

jtanguay · « **Reply #5 on:** January 18, 2008, 06:11:01 pm »

just scribe the parts and you'll be okay. its not like you're working on a jet engine :shock: :lol:

dillenger1 · « **Reply #6 on:** January 20, 2008, 04:53:04 am »

or am I?

:shock:

Author Topic: Turbo balancing (Read 2286 times)

914turboford