stripped rc8t rcm motor mount, which tap to get?

[squeeforever]

Use a helicoil.

[JThiessen]

Originally Posted by squeeforever

Use a helicoil.

Unless you have the equipment and knowledge to correctly put those in, don't bother - you'll just end up pulling it out. Helicoils usually only work ok if you can counterbore the hole, and end up with the pulling direction being such that you would be trying to pull the helicoil through the counter bore.....hope that makes sense....

[georgec]

Call me Mr Obvious, 3.5mm!

[simplechamp]

Originally Posted by georgec

Call me Mr Obvious, 3.5mm!

3.5mm is not really a common size. They can be found but probably better to go up to 4mm, more readily available.

[JThiessen]

Originally Posted by simplechamp

3.5mm is not really a common size. They can be found but probably better to go up to 4mm, more readily available.

Ditto that. If you can find a 4mm tap somewhere. I've only been able to find metrics in complete sets so far (locally). Make sure you get the correct drill size for it too.
There are two 4mm fine thread sizes 4x.5 and 4x.35, I dont believe the latter is very common. The 4x.5 requires a 3.5mm drill, your hole might already be over that size, but if you can find one, it'll be worth having around.

Originally Posted by JThiessen

Unless you have the equipment and knowledge to correctly put those in, don't bother - you'll just end up pulling it out. Helicoils usually only work ok if you can counterbore the hole, and end up with the pulling direction being such that you would be trying to pull the helicoil through the counter bore.....hope that makes sense....

we use small helicoils at work, not me personally, yet; is this a standard install?
are helicoils tuff, i like the idea of keeping original size screws all around.
thanks