clutch slave cyl bolt

[ean]

Vitesse Con 2L. The thread in one of the holes(?) on the bell housing to retain the clutch slave cylinder has been stripped (not quilty)

I have a Clarke RAD-2 right angle attachment and a 210mm long drill bit and, combined, their total length means that I might have to remove the shift mechanism to get the drill in to bore out the hole to fit a helicoil. Which is a bit of a pain.

The drill diameter is 21/64, is it possible to get a shorter drill bit, say half the length. This would allow the combined pieces to fit in the space, between the housing and the shift mechanism, to allow a straight drill into the bell housing hole.

As an extreme measure I could cut a bit of the current drill bit but the owner would not be to chuffed about that.

Any advice would be appreciated.

[Pete Lewis]

have you considered a self threading bolt to work probably need to go to 8mm metric or even tap it 8mm metric and  fit a normal 8mm setscrew

see it that will hold  ..it saves  the angle access problem 

 

bit of a bodge but can be successful.

 

Pete

[ean]

Like the idea of a self tap bolt BUT I assume the bolt will be steel and then being forced, to a certain extent, into aluminium the two different metals are very likely to weld togther and difficult to remove at a later date?

Taping an 8mm new tthread might be better.

Thanks for the comments, though.

Iain

[Pete Lewis]

we used thread cutting bolts on battery leads into chassis frames ,  never tried on alloy, but reckon it wold work ok 

 

https://www.orbitalfasteners.co.uk/en/categories/taptite-alternative-screws

 

pete

[dave.vitesse]

Should work with a course thread and the right size bolt. Just careful, careful! Not just strip out but too large a bolt may crack the metal.

 

Dave

[68vitesse]

Have you checked to see if there is still thread below the stripped portion? a longer bolt or a length of studding with a nut would then work.

 

You can get stub drills. https://www.cromwell.co.uk/shop/cutting-tools/stub-drills-hss-uncoated-and-coated/39150901

 

 

Regards

 

Paul

[GT6M]

Tap it wider wid a metric 9 MM 1.50r a 10 MM 1.5

or a 3/8th UNC or WHIT

 

thee,s if taper taps,will fit in wid oot needing being drilled

 

goingtoo deep, then the threads can come thru the other end

let water / moisture in, and it seizes,  been there fun it oot

 

And, use a wee bit of thread lok,

then ye no gotta tighten as much, and it wont come loose

 

M

[ean]

Gents

Thanks for all the advice, a lot to work through and consider the best route.

Paul - yes and no, the thread is all gone. Thanks for the website for the stubb bit

Dave - note your comment on over sizing the bolt

Iain