Roe Throttle Body Butterfly Mod

[pokeyl]

The Roe Racing supplied throttle is not sized correctly. When I called Roe, the reply was "It's smaller then the bore to eliminate the chance of binding/sticking." That was 5 years ago. This makes the IAC circuit almost useless.

I recently bought a small benchtop CNC mill. After a huge learning curve, I made a new one! Now the plate sits at the correct angle an closes the bore, like stock. Shaft end play is also reduced.

I anyone wants the CNC file I will post it up.

 

[Goggles Pizano]

Please do. Even though I don't have a Gen3-4 I like stuff like that.

What you CNC you buy?

 

[pokeyl]

DMC Mini2

 

[V10Sidepipes]

I have a Roe single blade TB on the car and it went in quite easily with no issues and minimal adjustment required.

What are the dimensions of the blade you got vs the one you made?

 

[pokeyl]

Short answer. Some trigonometry to get a 15 degree seat angle, and .2mm longer.
My stock blade has .1 to .2 mm gape all the way around (second pic).
The IAC did not have a RPM vote at idle.

Works perfect now. Even solved a nasty surge at 2000 RPM in low gears.

I am running a 710r cam, BB headers, bowl port heads, and tune: springs-lifter-pushrods to support the rest.

 

[pokeyl]

Please do. Even though I don't have a Gen3-4 I like stuff like that.

What you CNC you buy?

Do you want G-code or SLT?

 

[MoparMap]

Very cool! I recently saw the ads and video reviews for the Carvera Air and have been tempted to one day try to dip my toe into the CNC game. I have been messing with my 3D printer for probably over a decade now, but never played with metal stuff before.