Liquid thread repair?

[slopster]

Can anyone recomend one of those thread repair products? I've stripped the threads on 2 out of 6 of the holes my rocker cover bolts go into. I was hoping that the other 4 would hold it down enough but unfortunately the oil is leaking under the gasket (and eventually onto the back wheel...) Theres not enough clearance to drill it out for a helicoil without removing the engine from the frame (maybe possible with a 90 degree attachment on a drill but that would be real hard to drill straight with). Would any of those thread repair products work. Bearing in mind that it isn't structural and wont be torqued too tight maybe 15Nm. I've heard of people using kneed-it to fix stripped sparkplug holes so I might give that a go.

[xwhatsit]

Hey very interesting. I'm subscribing to this thread -- my rocker cover (threads in the head of course) is leaking too, as one of the helicoiled threads is fucked (it was helicoiled when I bought it, I helicoiled it again and it worked for a bit). I smeared loctite all over the threads and top and that keeps it oil-tight until the engine starts cooking in heavy traffic or long high-rpm work, then it leaks oil onto the headers causing ghey smoke.

Liquid thread repair. Who can help us! :D

[tri boy]

I have a option for you:
Possibly you can hand tap a 1/4" UNC/UNF thread in. If the hole is in reasonble shape, you maybe able to bypass the drill, and "walk" the tap in. Use a "starter tap" Then purchace a couple of bolts to suit.
I'm assuming the stripped threads are 6mm.

Its a bit rough, but saves removing the engine.
Caution: Keep the filings out of the engine.
Alloy head threads only.

[HDTboy]

Is this on the SRAD? I don't think the motor needs to come out to repair the threads. Will have a look tomorrow, but I think you can get away with just pulling the cam holders off, and re-threading the holes in them with a helicoil repair

[slopster]

Your right Gav I took the cam cover off and I can just pull the cam holder off. Course when I stripped the thread the rocker cover was still on so I didn't notice that it bolted to the cam holder. By the way I found some 2nd hand carbs for that 250 and it runs pretty well now.

[xwhatsit]

For those that are interested, this was recommended to me: http://68.72.74.113/USERFORUM/forum3.htm . Looks like good stuff!

[FROSTY]

Dude for thread repairs you can't go past using GENUINE helicoil.
One trich when using in sensitive areas on a motor is to liberally smear the tap with grease.clean the tap regularly and the swarf sticks to the grease.

[slopster]

Its going to be about $90 for a M7 helicoil kit which has heaps more coils then I'll ever need. What would it cost to get someone to do it for me (I've got the cam holder off now so its a real simple task). I'd do all three threads because two are rooted and the other one is slightly boarderline. Is there anyone on here who I could drop it off to after hours and they do it at work and then pick it up and pay them after hours because I'm real busy at work for the next couple of weeks?

[Pancakes]

Loctite user forum? Crikey!

Frosty's right, grease on the tapping tool has saved me bits in the motor more than once!

[HDTboy]

Ring Dave at engine specialties, he's usually there til 1730 daily

[Crisis management]

Any engine reconditioner should be able to do it for you, there is a guy in Newton that specialises in alloy repairs, the name escapes me but look in the yellow pages under engine reconditioners.

[boostin]

Any engine reconditioner should be able to do it for you, there is a guy in Newton that specialises in alloy repairs, the name escapes me but look in the yellow pages under engine reconditioners.

are you thinking of Jennings?

[Crisis management]

are you thinking of Jennings?

Maybe, how much you paying?

[boostin]

Maybe, how much you paying?

Less than I am charging...

Jennings Engineering are no longer in Newton, now working from Marks home in Albany...still the best in the business.

[roadracingoldfart]

Its going to be about $90 for a M7 helicoil kit which has heaps more coils then I'll ever need.



Are you sure its a 7 mm thread ????
If so then that makes Suzuki the most fucked up brand. I ask , what the hell does anyone want to make a 7 mm bolt for.
If its a 6 mm thread then yes you need a 7 mm x 1.0 mm pitch oversize Recoil tap which is the standard for 6 mm ISO.
Anyone with a kit will have that size and all you have to do is buy a refill pack of inserts to pay them back or just pay the price for the job and be done with it.
Some places sell the cheaper kit made by Recoil with a carbon tap instead of a High Speed Steel one and they have the same inserts but for much less outlay.
Cheers Paul.