Porting a Throttle Body!!!!!!
Porting a Throttle Body!!!!!! I want to port my throttle body and I need just a little help. " I hope that's all I need". I need to know what type of tool to use for the porting and also what holes need to be drilled in the throttle body after the epoxy is placed in the throttle body. Any help would be greatly appreciated 
Staging Lane
Joined: Dec 2003
Posts: 62
Likes: 0
From: Eden Prairie, MN/ Glendale Heights, IL
Check out www.installuniversity.com, they did a write-up on how to do it. A dremel with the sanding drum works great.
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I just ported my TB a couple weeks ago too, that was my favorite article! A couple other words of advice:
- If you have access to a die grinder, use that for the porting instead of a Dremel. It will go much faster!
- Remove the IAC valve, coat a AA (I think that will fit) battery with Vaseline or something similar, then insert it into the IAC bore so it blocks off the hole and won't let epoxy get in there.
- Use an epoxy that's thick so it doesn't run all over the place while you are waiting for it to set up. After I did mine, I found some stick epoxies that you knead until they are ready then you just stick them in place and let them set up. Those might work well, I haven't tried them though.
- Make 100% absolutely positive that you remove any and all traces of epoxy from the IAC bore. My car wouldn't idle right at first and I had to go back and clean the area up. For this I used a dental scraper and an Xacto file set.
- I rounded off the edges of the holes that I drilled into the epoxy to reduce the whistling sound I was getting at around 2800-3000 RPM. Think of blowing across the top of a beer bottle to make it whistle. It was the same type of noise just VERY high-pitched since the holes are so small in the TB. The same Xacto file set worked great for this!
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On The Tree
Joined: Jun 2003
Posts: 103
Likes: 0
From: Waco, TX
Originally Posted by Chili Pepper
I just ported my TB a couple weeks ago too, that was my favorite article!
So did you get any SOTP gains, and how long did the process take you (not counting the second go around/cleaning IAC bore)?
Originally Posted by Bigvic
So did you get any SOTP gains, and how long did the process take you (not counting the second go around/cleaning IAC bore)?
If I were to do it again: porting time < 15 minutes with a die grinder; epoxy < 10 minutes with the stick stuff; drill and shape holes ~15 minutes still. About an hour total including removal and re-install of the TB, but that takes into account that I did the TB bypass mod at the same time and don't have to fool with the coolant lines now.
