Throttle Body Porting And Polishing

[USMC_TOP]

Do they make a kit and a pattern for size to goto for a DIY porting and polishing job? I'm assuming you you use the same die grinder bits I used 25 years ago porting and polishing v8 heads? We use to line up the intake and gaskets to the ports on the head and go from there. How is it done on a throttle body?

 

[digglesworth]

You might wanna go over to 355nation and look up supermodulation. He sells em. I got mine from him for like $100. He may give you some info on how he does it.

 

[Ed's06h3]

You might wanna go over to 355nation and look up supermodulation. He sells em. I got mine from him for like $100. He may give you some info on how he does it.

I did the same thing. Good guy and he'll give all the info you need

 

[Airborne]

+100 James is great, got the package deal from him; delux efan, super sparks, and ported throttle body for $500 shipped to my door. Great guy.

 

[digglesworth]

How does his efan kit compare to the pcmofnc kit?

 

[USMC_TOP]

Sweet! Thank you guys!

 

[benlaud87]

I just drove up to his house which was an hour and a half away. He installed my efan right there for free.

 

[Airborne]

How does his efan kit compare to the pcmofnc kit?

I'm not sure as a direct comparison but some with pcmofnc efan have complaints with noise. Compared it to a leef blower, there is a video on youtube and theirs was honestly very very loud. I posted a vid on here of mine and inside the cab you can barely hear it. Outside the cab the exhaust is louder so it doesn't matter to me at all. Frankly noise was my biggest concern and I was shocked with how quiet mine was. I couldn't be happier with it and it definitely keeps the temps down.

 

[Best4x4]

The PCM fan covers up all the H3 squeaks & rattles. Sound doesn't bother me at all. My Rover's had efan's come on for the HVAC that sounded the same.

 

[USMC_TOP]

I found this on how to DIY........

1. the larger the front is opened up the better.. HOWEVER, be carefull to stay within reason as if you make the TB wall too thin it will crack or break..

2. Once you removed the desired material you can then move to polishing the bore. Avoiding the ventury area.. But you can polish right up to it.. Hand sanding works well moving in a circular motion from about 500-1000-1500-2000 git sand papers. But you can also use a moto tool (be carefull) to remove material and to polish..

3. Never change the ventury bore. It's the area where the butterfly is.. That area is milled specifically for the blade (butterfly) changing its dimensions will cause problems..

4. One thing that is easy to have happen is damaging the ventury bore.. Like said, this will cause troubles..

The other could easily be opening up the rear bore too much..

The rear bore behind the ventury should not exceed the size of your intake manifold inlet diameter..