Threaded Spark Plug

[jaxx]

I've just come to change the plugs on the bandit, and found that the far right hand plug felt a little loose in its housing.

After taking it out, very easily..., I tried to replace it, and the new plug wouldn't tighten up...
I've been very easy on it, and not forced it, as I dont want to make it any worse. Previous owners obviously didn't share this attitude...

Someone I know, fairly unreliable, has suggested Blue Loctite as a quick fix. Just wanted some opinions on this and other remedies. Obviously I know that the right thing to do would be remove the head and get it tapped, but I doubt I could afford that right now.

All help gratefully recieved
Jack

[Paxovasa]

Would helicoil be any good?
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Suzuki GSF600 K3 (in the fastest colour, black).

[The Artist]

Really need to remove head and tap.

You can bodge with loctite but it won't hold forever and will be a PITA to get out when you need to.

You could do it in a day if you wanted.

[jaxx]

[Paxovasa]

It is a thread repair kit.

https://www.google.co.uk/search?aq=f&sourceid=chrome&ie=UTF-8&q=helicoil
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Suzuki GSF600 K3 (in the fastest colour, black).

[ms51ves3]

[N cee thirty]

hmm i heard somewhere the helicoil comes out with the plug alot of the time.

would be best to get it tapped,maybe even clean the valves up while your doing it
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[jaxx]

[Paxovasa]

As long the plug has a decent seal and it doesn't get blown out, you should be ok until you get a proper repair done.

I guess the previous owner tightened the plug too much and has stripped the threads.
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Suzuki GSF600 K3 (in the fastest colour, black).

[hmmmnz]

if you are going to go down the heli-coil route, i recomend time-sert or the wurth time-certs
they are far better than heli-coils or re-coil etc,

you can use standard taps, and you will struggle to break the little tab off on heli coils, time serts actually seat on the top edge and not on the bottom, so won't just thread right through into the cylinder
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the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[jaxx]

[Pete.]

Timeserts are superior to helicoil but sometimes it's not possible to get the tool in on cylinder heads. Helicoils have been used millions of times and you do sometimes have trouble with them winding out but I bet the ratio of it occurring is hundreds if not thousands to one. I've done a handful and none have come out yet.

Forget the loctite, it'll most likely just blow the plug out one day when it gets hot.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[chris-red]

What version bandit is it? it may be cheaper to get a replacement cam cover than repair the new one.
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Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
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[Pete.]

[N cee thirty]

theres head's on ebay for £60
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Peterthepillo...]

Ok it's a botch, but loctite will actually work. I had a plug blow out of an aircooled beetle engine, loctited it back and it lasted three years. It all depends how proud you are I suppose.
I have known friends use araldite with good results too, but that was on a watercooled Hilman Imp which might be a bit cooler.
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A passage broad, smooth, easy, inoffensive down to hell.

[temeluchus]

+1 on the timeserts.

timeserts are a solid steel collar, whereas helicoils are basically tightly wound springs.

its much easier to get timeserts to stay in place and they are mechanically stronger than the original ally thread.

I have a time sert in one of the heads on the mt11, never had to look at it since it was installed.
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Some shite cruiser. Now with guns and FREEDOM!

[BIG ZOOK]

Quick fix wack the threaded end of the spark plug ,several times with a chopping axe,then you will be able to tighten it up to the correct torque,without damaging the cylinder head.You can fix it with a time/cert at a later date.Ps ran the same chop method in a 99 plate gsxr 600 for 10,000 miles no bother.

[Noxious89123]

[fiery tupp]

[LongJohn22]

Wurth Time-Sert is the Rolls-Royce repair. The threads are syncronised so they take up no more room than a helicoil, they also lock themselves in position where a helicoil will relax and eventually come out with the spark plug, sometime in the future. There really is no comparison between the two systems. If you are really careful, it is possible to repair the thread without removing the cylinder head.

[Ed Case]

I've had a Timecert fitted in the plug-hole of my old 250RSA, it's the only real permanent answer but the head really needs to be off, s'pose it could be done in situ but I personally don't like the thought of that.

[Vincent]

+1 for timesert if you can get one in. It might be just as cheap to get it done profesionaly than buy a kit. You won't be able to retap it unless it's drilled out and resleeved and I'm not sure I'd like to rely on loctite with a bike, I've seen bikes where the plug has blown out and through the tank (you are sure that it's the thread on the head that's gone and not just the plug?)

[chris-red]

[temeluchus]

i think you can get kits for one spark plug hole, they consist of one insert and a special tool that is a thread chaser and reamer in one. sure ive seen em on fleabay.
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Some shite cruiser. Now with guns and FREEDOM!