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General Information => General => Topic started by: dbk on January 01, 2010, 10:30:34 am

Title: variable displacement turbo
Post by: dbk on January 01, 2010, 10:30:34 am

what year did this turbo come to canada? I hear the vanes seize up and require a tear down to repair. (have been told hosing them down with oven cleaner works)

Title: Re: variable displacement turbo
Post by: Vincent Waldon on January 01, 2010, 11:54:27 am

VNTs first showed up on the early Canadian TDI engines... something like mid-1999 for Golfs and Jettas... perhaps a bit earlier on the Passats.

The vanes and/or actuator can gum up with carbon, especially if the engine is babied... driving aggressively every once in a while is actually a good thing for a VNT.

I personally would not attempt to clean out a VNT any way other than thru disassembly, if some spirited driving didn't do the trick.  ;)

Title: Re: variable displacement turbo
Post by: burn_your_money on January 01, 2010, 08:38:58 pm

Are you sure Vince? I thought the VNTs didn't come out until the ALH engines in 99.5

Title: Re: variable displacement turbo
Post by: Vincent Waldon on January 01, 2010, 09:11:07 pm

Yah yer right... double-checked my Bentley and 99.5 was the crossover year in North America.

Will edit my post above... good catch.

Title: Re: variable displacement turbo
Post by: Street Toys on January 02, 2010, 06:10:02 pm

didn't the 98 NB have a VNT-15? ???

Title: Re: variable displacement turbo
Post by: burn_your_money on January 02, 2010, 10:11:49 pm

Yeah I think you are right. I have no idea on years or anything with NBs but I think that they are all ALH engines.