2.9 Vr6 throttle body.

[VEEDUBBED 0]

Allright chimps,

Who know's if the ABV vr6's throttle body is bigger than the 2.8 AAA's version??

I seem to recal the 2.9's was bigger but i don't remember..

Cheers.

[Dox 22]

Allright chimps,

Who know's if the ABV vr6's throttle body is bigger than the 2.8 AAA's version??

I seem to recal the 2.9's was bigger but i don't remember..

Cheers.

 

Yes 2.9s have a larger throttle plate and will fit OBD1 2.8s only

[hibberjo 10]

Yeah 100% bigger! I did some Google searching a while back and found some good info on this. Can't remember for the life of me what website though!

[VEEDUBBED 0]

100%??? You sure? wow, that's quite a difference..

Mate of mine in the states has a golf vr 2.8 AAA mill, he wants to fit a complete ABV inlet set-up off my spare engine. Is it just a simple bolt on job, swap one for another?

[hibberjo 10]

100% the 2.9 is bigger as in the butterfly and bore. But the 2.9 tb will fit a 2.8 inlet.

At the moment I have a 2.8 tb on a 2.9 inlet and it works fine

[Kevin Bacon 5]

From what I remember from my TB dabblings back in the day:

 

2.9 & OBD1 2.8 are the same diameter plate, but the 2.9 does not have the ramp in the housing. Instead it has a 2 stage opening mechanism, slow, then faster. Both of these can be bored out and larger plates fitted.

 

2.8 OBD2, same size again but cannot be enlarged due to the way it's constructed. Also has the ramp in it to speed up gas flow at small openings, for better response at low speeds.

 

I used all 3 in mine, standard and modified (except the OBD2 one) and I preferred the 2.8 throttles. The ramp works well at low speeds and the 2.9's linkage gives quite a heavy and lethargic pedal feel.

[VEEDUBBED 0]

Interesting kev, i'll inform him.