dans93z28

step 1: buy a 1/4-32 tap and some carb jets (about $20 shipped from amazon)
step 2: drill open the hole in the TB with with 7/32 drill then tap it.
step 3: deburr/clean out chips and insert jet of your choice.

This way you can swap in a new jet with the TB on the car as long as you're careful and don't drop it into the IAC passage in front of the hole.

I did this because my 52mm TB had dropped my IAC counts down to the 10-15 range. My mild head/cam build did not need the excess air the larger bore was flowing at idle. and no it wasn't open too much.

Hoping someone will find this useful.

96capricemgr

iTrader: (1)

Really good idea, thank for sharing.

stevo9389

Glad to know that actually works because I had the same thought the other day while a friend was drilling his TB.

Puck

iTrader: (17)

That's actually a great idea for someone who has over drilled the IAC hole .

myltwon

iTrader: (1)

Great idea!