throttle body

[JShadzi at aol.com]

<< actually the 90 10v should have the largest Throttle Body available for
that
 particular bolt pattern. >>

All the dual state elongated TB's from the 20v and 10v NA cars are the same
(size wise) after '85, even up throught the V6 cars.

<< The turbo cars use a circular single plate
 throttle body about 55-60mm rough estimate >>

55mm to be exact, 3B is 60mm

<<whereas the N/A motors all use a
 progressive dual plate with 38mm and 52mm I believe.>>

I don't have the exact measurements off hand, but I can guarantee they are
not that big, I'd say more like 25mm and 35mm, but I don't know for sure.

 << They are not interchangeable and even if the bolt holes lined up, the
manifold's port would not be even close.>>

Yup, that is right, no way it'll fit, then there are throttle switches,
linkage issues even if it did "bolt up".

<< If you want to do a throttle body upgrade you could theoretically bore it
 out.  Knife edging the butterflies might give a tiny increase in flow as
 well.>>

The 10v NA cars don't need a bigger TB unless you've really hotrodded the
rest of the motor.  Blau or 2Bennett will bore them out and install bigger
butterfly's, but unless you have a good exhaust, cam and headwork/big valves
its just not necessary.  Don't forget the 20v has no problem getting 160+
high rpm hp out of the same TB, and the V6 cars are in the 170hp range, all
with the same size dual stage TB.

Javad
 80tq.com