Transmission Oil Leak

[Stein]

Helicoil will work fine. Don't worry. Just be really careful as you're drilling. Otherwise a painless process

Cheers Gavin.

Any recommendations on where to get a Helicoil like insert? The bolts look to be M7s and there's a lack of them at the usual suspects. Come across a few on Ebay but with the world the way it is it'll be July/August before something out of China will get here.

[JTop]

Hi Stein,

If you were in Melbourne there is a shop called costlessbolts. they have everything thread related.
Not sure which bolt shop in qld would help you. Hope this is an idea.
Cheers

[h100vw]

Don't think they are m7. More likely M6. That is commonly available. Trade tools would sell that

[sambb]

yeah any engineering outlet will sell what you need, doesn't have to come from OS.

[Stein]

Don't think they are m7. More likely M6. That is commonly available. Trade tools would sell that

OEMEPC list it as a M7x20 so that's what I went and got. No one had anything locally and wanted ~$140 to get one in. Ended up getting one from an online shop for $75. Its a Recoil kit and made in Australia so that's was a bonus.



Had my last exam today and did a test run on some mild steel I had laying around. Went well so I'll see how I go tomorrow when there's some sunlight. Fingers crossed.

Edit: For anyone who might need the info I pulled out the die set and checked that it is indeed an M7 with a 1mm thread pitch. Probably should have do that before I went and ordered it.

[sambb]

oh ok I think I see the confusion. The helicoil itself is M7 outer, so that its inner will accept an M6 bolt yeah?

[Stein]

oh ok I think I see the confusion. The helicoil itself is M7 outer, so that its inner will accept an M6 bolt yeah?

I thought the same thing when I first started looking into this. The size they list on the packaging is for the inner diameter, the kits come with a specific size drill bit and tap that's not standard metric.

Don't quote me on this because the good ones are flat and these are the, umm, "marking" calipers. The drill bit measures ~7.1mm and the tap about 7.5mm. I'd measure one of the coils but when you screw them in the torque applied compresses it so that it bites the thread a little more and isn't very useful.



Tiny little bit more play then I thought but it takes the M7 bolt no worries, should be just fine for 18nm.