i was installing a new slave cylinder and stripped out the threads in one of the holes. any way to fix without having it machined.

 

Sucks to be you. I did something similar. This what I did, first I ran a tap down the hole . Then went to the hardware store and got bolts in different lenghts. Mine stripped out because of that stupid shim from spec it didn't allow enough threads in the hole the tighten up. Once I found out which bolt went in the deepest (with washer and lock washer)without bottoming out. I applied alittle blue lock tite and tighten them up this time with a torque wrench ( don't remember tq spec wasn't much). No problems so far (beating on wood). If that doesn't work you could always tap the hole to the next biggest size

 

You will be fine with one bolt. If you think about it the system holds the slave in place and the only thing the bolts do is keep it from rotating. If it makes you feel better, rework it as was said above but you do not need to.

 

its only 6 ft/lbs of torque on those bolts. retap and loctite.

 

Tap the hole a little deeper and use a longer bolt may help.
The definitive solution is to use Helicoils.

 

Helicoil to the OE 6mm size, or here even taping it to a larger size bolt may be an option.

 

I thought helicoils are one shotters. Hard to get the bolt back out with those.

 

I agree use a helicoil. No, their not one time use. You can use them untill they start to pull out again. Just don't use stainless bolts in them and you'll be okay. Stainless bolts get stuck in the helicoils because their similar. At least according to the manufacture. I use them all the time at work.

 

Done properly helicoil's are a perment repair. They wont back out or strip if not overtightened that is.

 

Someone already said it ....just use a longer bolt....unless it just bothers you, then step up a size or two with a drill, tap, and new bolt.