Gen1 65mm throttle bodies trying to port intake to the same?????

[VIPER BAZ UK]

Just bought some Accufab 65mm throttle bodies (WOW they look the muts nuts thank you Sean Roe) and i am trying to open out the intake to the same.
Is there an easy way to do this,Been using a dremmel getting there very slowly but neetly...
Has any body done this if so please tell me there is a better way
MANY THANKS
BAZ

 

[Bill B]

Die grinder and a carbide tool.

 

[James Bell]

I have a Gen-1 ported and polished intake manifold for sale. The manifold is only polished above the injectors so the fuel does not stick to the sides. I had all the casting lines smoothed out inside the length of the runners. The plenums were opened up to fit 65 to 70mm throttle bodies. The manifold is a early (1991-1993) 4 row manifold, which has the biggest plenums. The finish has been smoothed/polished then Jet-Hot coated silver. Let me know if you are interested, James Bell.

 

[VIPER BAZ UK]

You have a PM

 

[jp]

It is extremely important tha you leave a sharp edge inside the plenum when you open up the TBO hole.

 

[VIPER BAZ UK]

Hi JP
This sharp edge is it the inside of the opening so the inside and outside are the same diameter???

 

[jp]

BAZ, it is the inside of the opening. Never try to smooth that edge out. If so will the air velocity get bad.