Hey all, trying to repair threads on an exhaust bolt hole on my 20R head(M10 x 1.25, or 1.5, can't remember at the moment). The hole is so stripped that a standard size helicoil won't work. I heard keenserts are a bigger insert requiring a bigger pilot hole, so I want to try that. Problem is I can't find the things for sale anywhere! I did a pretty fair amount of googling, and searched around the Grainger website, I got nothin. Anyone have any ideas?

thanks in advance

 

you might want to check with some machine shops. They must have to use them!

 

Thanks for the tip. I can't believe how incredibly hard these are to find. It's like no one wants to sell them.

 

http://www.pointe-products.com/itemc...ic-Key-Inserts

First page, right on top.

 

Thanks! Called them, they said they had to contact the manufacturer to see about the 1.25 pitch. Gonna e-mail me back.

Also found that heli-coil makes an oversize insert, but those seem just as hard to get. Just got off the phone with a fastener company called Olander, he said they had NEVER sold one of these before, and that if the Mnfr didn't have them in stock the lead time was 15-18 weeks! Although I don't want to it looks like it might be a lot easier to just go to an 11 or 12 mm bolt.

Sheesh.