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Turbo Rebuilder - Who?

Chris Rogers

By Chris Rogers,
in Queensland

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pipster11 Grand Master

pipster11

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Posted (edited)

Fair enough. But no one had done the R & D that hypergear has and he makes everything in house. Still supporting an Australian business. Just not Brisbane.

Edited by pipster11
TREGTR Grand Master

TREGTR

Posted
Posted

Buying a used RB25 turbo for the 31. Who rebuilds these things locally. Want a steel wheel on it and a decent rebuild?

Chris the most important part is the balancing. GCG although not local (Sydney) have a Schenck balancing machine that is one of the best. They are very good and price competitive.

http://www.youtube.com/watch?v=_DtpNHkHYRQ

Chris Rogers Grand Master

Chris Rogers

Posted
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Posted

So there is no one local that does this?

Aware of the balancing of these things. Given the speeds they see if they were out a fraction all hell would break loose.

Trying to support local business for a change.as most of you are aware I spend a lot of money overseas on bits for these things

Thought I would give local business a chance at it.

hypergear Grand Master

hypergear

Posted
Posted

The harmonics on the CHRA assembly of a turbocharger would be only out balanced at certain shaft speed and then balances it self out in neutral, just like as if your front wheel is out of balance and that vibration goes away before and after certain speed.

So regardless of whom ever has what ever balancing equipment, as long as its accurate you can only balance it to a certain point. That does not determine who's high flow job performs better, last longer or provides the best $=HP value.

Any way. Some information for the OP to compare with.

Our high flow out of 21U R33 turbocharger makes 320rwkws on E85 internally gated on a bolton setup with 22psi reached by 3500RPMs. and been in 5th in World Time Attack Sprint class 2013.

atr28ssRB25233kw.jpg

This service is for $850 including braided oil line.

hypergear Grand Master

hypergear

Posted
Posted

Out of interest.. what machine do you use?

We use Hiens dynamic balancing systems. never had issues with any turbochargers that we've balanced.

Get the balancing right is only a small section of the map. There is shaft tolerances, clearances, machining tolerances of the housings, bearing housings, bearing housing bore, fluid dynamics in side the bearing housing, wheel materials, wheels sizes, blade profiles, waste gate assembly and more. Now high flowing factory turbocharger to suit a specific engine requires lots of knowledge and experiences working with that engine, to understand how the customized profile behaves in terms of generating power, boost and efficiency range with limitation of stock housings, in which we've spent lot of time on.

Having a reliable balancing machine can only result a well balanced shaft assembly. Once all criteria mentioned above meets, you have a good turbocharger. So the best way of making better choices is by comparing results.

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