another oil sump threaded thread

DrSnoosnoo · World Chat Champion Joined: 28 Mar 2012 Karma :

Yep, I threaded it I think. Now ive used the search the function so my question is regarding the repair:
Do I do the helicoil idea providing I've only got access to a basic drill and limitted bits OR just try to screw in a slightly larger thread to use an oversize bolt for the future?
It's these or I try get it to an engineering place and pay them, FSM knows how much that will be though.

Can I have your advice please BCF?
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I'm Sam; Northern, Ginger, Lover
Did have: '95 ZZR600 '83 CG125 '97 ZZR1100 '15 Hypermotard 821 SP Do Have: '10 ZX10R

Islander · World Chat Champion Joined: 05 Aug 2012 Karma :

Get it helicoiled.

ian505050 · Traffic Copper Joined: 27 Oct 2010 Karma :

drain oil, remove sump plate, drill new hole, tap new hole, put new sump bolt in hole, make sure you use copper washer.

or..

Replace sump plate with a new sump plate off a bike that is being broken on ebay.

_Iain_ · Banned Joined: 01 Feb 2012 Karma :

How do people do this?
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kestrel · Nearly there... Joined: 04 Sep 2006 Karma :

On aluminium sumps with damaged threads I usually remove the threaded hole with a holesaw then weld in a new threaded boss and fit a new sump plug.
Threaded aluminium bosses and plugs are available from many motorsport suppliers and it shouldn't cost any more than about £10-15 to have it TIG welded in. We've done a few of them at work and usually charge a tenner for the tea kitty.
There are other methods of repairing sump plug holes but this is the one I prefer as it's a permanent good as new repair.
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DrSnoosnoo · World Chat Champion Joined: 28 Mar 2012 Karma :

Been ringing around and im gonna get a new sump.
As for the comment of how do people do this?
My answer is just, not all of us have worked with mechanics for years, in my case ive only been fiddling for a year and not had to do this before. I very much believe in the idea of learn from your mistakes which I have so I wont make the mistake again. I know it was a silly mistake and I knew I had to be careful.
When cracking the sump plug off to drain, I had to give it some force then when putting the plug back in I gave nowhere near the force it took to get off, it just went. Thats as much as I know.

I'll be much more careful in future because I dont fancy changing the sump everytime
____________________
I'm Sam; Northern, Ginger, Lover
Did have: '95 ZZR600 '83 CG125 '97 ZZR1100 '15 Hypermotard 821 SP Do Have: '10 ZX10R

Islander · World Chat Champion Joined: 05 Aug 2012 Karma :

Buy a torque wrench. It'll teach you how much pressure to apply to a bolt/nut.

Turkish · Crazy Courier Joined: 09 May 2012 Karma :

It's possible it was cross threaded, either when you put it back in, or when the last person put it back in.

Tip for the future; on a fastener with clean (and/or lubricated) threads, it should be possible to get said fastener most of the way home with fingers only. if it tightens up in the few couple of turns suspect the fastener is cross threaded. This is especially important with spark plugs.

Good luck!
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CBR125R RW6

Timmeh · World Chat Champion Joined: 01 Nov 2006 Karma :

IMHO the far biggest cause of people stripping the threads (bar basic stupidity) is because they re-use the copper crush washer.
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