cougar

Anyone know what the difference is between the HX35 used on manual trucks vs the automatic? Been on the Holset web site and couldn't find any details other than different part numbers.

gorms

I think just the wastegate, different pressures? Not sure on that. I know the manuals put out a few lbs more pressure stock, could have just been from the pump flowing more fuel.

After 00 I think they started using the HY in auto's, and the HX's got 2 different ex. housing, 9 and 12cm.

cougar

So probably a factory setting kind of deal?
Yes, they went to the HY with a 9cm housing for autos. Mine is shot, so I'm looking into an HX replacement. All of which have a 12cm housing.

gorms

Yeah I would assume its just a different spring in the actuator, as the turbos are all functionally the same from 95-98.

FWIW I rebuilt my HX at 180k as it was leaking some oil, easy to do. Has almost 260k on it now and is still perfect. HE351 might be the way to go though for a stock type replacement...

cougar

I've done a few too, I would have to do a CHAR on this one. I'd have to buy a 4" exhaust to do an HE. Expensive to ship up here.

joem

Anyone know what the average life of the HX35 is?
Reason I ask is because I am following this thread effecting the very same car I paid $30k for

http://forums.tdiclub.com/showthread.php?t=360617

oliver foster

The life of the turbo really depends on the driver.
Stuff like, pulling of the highway, stopping at a gas station and turning off the motor after towing heavy without letting the turbo cool down, will give it a very short life.
I watch my pyro gauge and let it get under 300* before I turn my engine off.
After a long day towing I let mine idle for a few minutes before shutting it down.

cougar

Also neglecting your air filter and going too long between oil changes for the conditions you are driving in will eat them quickly.
Mine was a contractors truck. Fairly well maintained, but worked hard none the less. It has 170K on it. So far i'm into it a lift pump and a turbo.

joem

Yup I agree, I always let my trucks idle a bit or drive easy before shutting them down. I have no idea what to do about my new VW, At idle when in regen I have Pre turbo EGT's of 1350F and post turbo temps at 1050F with the DPF at 900F are very common temps on shutdown- I hope the borg warner BV40 lasts