Stripped caliper threads

[KennyKak]

Got a set off nissin calipers for the Gay 7/11 but the arse that sold them to me didn't tell me 2 of the mounting holes have stripped threads. Been in a cubard for months  so lost they guys details so they will have to be fixed if possible. Can I use a helicoil or is there a safer way to save the calipers

[Ivan]

Quess nothing wrong with helicoil, stronger than original? Something like this otherwise?

[TonyGee]

if theirs enough meat then helicoil or go up a thread size, but that would mean drilling the mounting holes out. 

[Swiss Toni]

Normally, I'd say a helicoil, but as we're talking brakes here, I'd opt for Timeserts. Dearer, but in my opinion, a lot safer.

[TonyGee]

25 minutes ago, TonyGee said:

if theirs enough meat then helicoil or go up a thread size, but that would mean drilling the mounting holes out. 

feck im loosing it !!!!  i was meant to say Timeserts    i never use helicoils anyway. 

[KennyKak]

Timeserts look a lot better but over 200 quid for a fitting kit!!!!

Could buy new calipers for that or is there a cheaper kit out there?

[TonyGee]

43 minutes ago, KennyKak said:

Timeserts look a lot better but over 200 quid for a fitting kit!!!!

Could buy new calipers for that or is there a cheaper kit out there?

Yeah their way to expencive 

[wraith]

You could have them welded up, then drilled and taped. Be cheeper than Timeserts 

Timeserts are good but unless you're a garage they are expensive for a one off job. 

Or if you have room between the calipers and discs just put a lock nut and bolt on, with thread lock. It's a bodge 

[DAZ]

5 minutes ago, wraith said:

Or if you have room between the calipers and discs just put a lock nut and bolt on, with thread lock. It's a bodge 

No it's a creative engineering solution  ...... Ok yes it is a bodge but it sounds better 

[bunk]

Personally i say just get new calipers. They have already been in the hands of a incompetent person, who knows what else is wrong with them.

[dupersunc]

Heli coils fitted correctly will be more than adequate for the job.

[Fazz711]

Helicoils are fine if done right.

I would use them.

 

Timesert are bit more suited to the application but as said expensive for a one off.

 

[Upshotknothole]

Get new calipers or take them to a machine shop to get Timeserts installed. Discovered on one of my bikes that someone had stripped a caliper bolt and then drilled the fork lower to fit a larger bolt. Pain in the ass later if you want to run different calipers.

[TLRS]

AP calipers have some kind of insert in them from stock so if there's enough meat, go for it.

[R1guy]

5 minutes ago, TLRS said:

AP calipers have some kind of insert in them from stock so if there's enough meat, go for it.

He’s right you know.

I also stripped a thread in a Nissin 4 pot caliper.

@Pegleg( at the time) had the correct timesert kit to very kindly help me out. If you speak to him nicely he may be able to assist you.

The repaired caliper only ever saw track use and was all good for the remainder of my custodianship of the bike.

Edited April 23, 2024 by R1guy

[Dezza]

I had some caliper brackets expertly made by Spondon in the mid-80s to fit their 4 pot calipers to Suzuki forks. The brackets were made from 10mm ally and the threaded bits were helicoiled, not cut directly in the ally. Mr Bob told me these were "fuckin' stronger than threading directly into the ally" .

Edited April 24, 2024 by Dezza