462whpGTI

Are the motors in the GS 300/400/430 interference or non interference. I recall my dad's old '94 LS400 was non-interference, but i'm sure things may have changed since that version of the 4.0L v-8.

Conceptvip

pretty much every motor 98+ are interference. unsure about the v6 though

ksu1998

iTrader: (1)

Almost the blind leading the blind here (j/k)
just noticed you are from KS. where at?

Search is also a sweet tool. ...The 400/430 is interference the Staight 6......300 is .... I forget.

Conceptvip

the straight 6 is a interference motor

gs-ireland

Last I heard:

VVTi (98+) = Inteference
Non-VVTi (pre 97) = non-interference

TRD911

The V8 is an interference motor. No doubt. You would be better off to change the rotating components, pulleys pump tensioner than the belt itself. Most of the times it is a rotating component that fails
BP

ElitistK

iTrader: (4)

a general rule to this question: as long as it has vvti, it should be an interference engine.

462whpGTI

that's kind of what I was thinking but wanted to make sure.

I'm looking at a few 8X,000 mile GS400's and wanted to make sure I took care of the timing belt if the new 4.0 motors were interference.

how many people know of someone who's had a timing belt go on these motors? I'm used to getting worried around 70k miles on my VW because of weak tensioners.