nomind

I picked up a BBK 52MM TB off eBay for relatively cheap ( >$100). It was used, and the they had started removing the IAC housing, and broken off the heads of a couple of the bolts. I got the housing off the TB, and was able to get the bolts out with some penetrating lube, and vice grips. I picked up some new bolts for the housing (after a thorough cleaning), and put it back together with a new gasket set. The bolts work great on some of the holes for the housing, other ones just stripped out before I could put any torque on them (not even using a socket). I am trying to figure out what other people have done to fix the bolt holes. Did you drill and tap, or helicoil? If drill and tap, any ideas what size?

Bob88GTA

iTrader: (2)

I used a lot of helicoils in aerospace with great success. I personally would start with them.
My opinion.....
Good luck, its just aluminum.

RedLeader289

iTrader: (2)

I second what Bob88GTA said. I've seen helicoils used on aluminum intakes with great results, I imagine they'd work here too.

rusty vango

having just rebuilt my TB I found that the IAC housing screws are not all the same length. and some of my holes were stripped. I used new allen head bolts with lock washers that were 3mm longer to fix it.