Club 80-90 Forums

anyone done it?

I have two partially stripped threads , not completely gone, but they could be a lot better.
problem is, they are for the alternator mounting bracket (1.9 dg), and as you know, there isn`t a great deal of surrounding material to drill out and put a thread insert in place, although I suppose I could drill out and re-tap the next size up, but will avoid this if I can.

I have thought of running a tap down the thread to partially restore it.

any thoughts?

m8x1.25mm in alloy casing I use Timeserts to repair this on gearbox cases and engine cases it's stronger solution than a helicoil

yep used epoxy puty heat resitstant to 130c you just have to degrease bolt & threads i use meths small paint brush
let epoxy cure and then run a tap down thread .epoxy puty was a two pack mix £2 from a well know site e***

thanks very much for the replies, this is all good info.

steel putty is another consideration.

I had thought of Nylock bolts, that's if you can still get them.

I think I will experiment with the putty on a lump of scrap ali. first.
I will drill/tap a hole, run the putty down the hole quickly followed by a bolt, remove the bolt and leave to set.
when set, I will run a tap down the hole , insert bolt and torque it down to failure.

if it exceeds thirty Newtons, its good to go.

worth a go, or a daft idea?

Hello,

its only Goop....

Timesert or helicoil..

Buy a kit 8 and 10 mm with taps from a well known....

Cordialement,

to be fair I also use 2 pack putty to repair case where they are corroded including supporting studs where there is some good thread left just the outer most ones that have gone

the alternator bracket is originally fixed with studs in the block this is stronger than bolts as the studs are bottomed out in the thread

I have two issues with using inserts.
first there isn`t a lot of metal around alternator bracket fixings, and I am a bit wary of drilling out of square.
how do I drill a squared hole?
this is why I am considering putty.