Anyone used an FD throttle body on a Cosmo Intake Manifold?
 

I'm using a 13b-re intake manifold for it's much larger intake runners and much sexier appearance (had my rotor housings ported to it.) I am now trying to figure out how to mount my FD throttle body to it. Anyone else done this? Have any advise? Don't guess anyone sells an adapter plate.....I am trying to find someone local to CNC me one, but not having much luck.

I'd love to be able to incorporate my idle air motor into the adapter plate it I can. The REW has the idle air motor on the manifold while the RE has it in the throttle body.

why not use the re throttle body its larger thsn the rew isnt it?

z

20b TB fits the RE UIM, REW TB does not fit the RE UIM w/o adpater plate

Problem is the throttle pulls on the opposite side and in the opposite direction. The TPS is also different.

You'll need to swap pins 2 and 4 on the stock FD TPS plug. The FD is a 0 volts to 5 volts TPS. The Cosmo 20B is a 5 volts to 0 volts. Swap pins 2 and 4 and you now have a cosmo 20B with a 0 to 5 volts TPS

Re-route the Throttle cable.

if you don't want to do any of the above, buy a 20B rotary works TB and have someone weld the bottom of the RE UIM

Is the 20b throttle body different from the 13b that I got with my intake?

Can anyone refer me to a machinist that could fabricate the adaptor plate?

Found a local Water Jet machine shop that is going to make me a 3" adapter plate. This will make up the difference in the length of the Cosmo UIM. I can get more made if there is any need for them. Anyone else interested in doing this Mod?

So I got the cosmo intake on mine and the bolt holes of the fd throttle body are the same and match with the cosmo intake, the adapter plate I had is basically like the comso gasket, but the problem I'm having is a boost leak I'm thinking about welding the adapter plate that I had made to the fd throttle body because the gasket of the cosmo and the adapter plate is slightly longer then the fd and could be leaking air thru the bottle of the throttle body