650 Timing Chain - Is it easy?

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G0FHM

650 Timing Chain - Is it easy?

Post by G0FHM » Thu Apr 17, 2014 11:03 am

At some point I want to put a new chain on the 650, as it has a small slack spot.

I can get a chain easy enough (DID - £30), but I'm wondering about fitting it.

Could I link the 2 together and run it through? Or is it going to be an engine apart job, bearing in mind it's a rivet link and not a fishtail link, and there is a danger of it coming out when I turn the engine over!

Cheers,

J

bobster

Re: 650 Timing Chain - Is it easy?

Post by bobster » Thu Apr 17, 2014 7:14 pm

Not an engine apart job.............bit fiddly but can be done by attaching new chain to old chain and turning engine over! once youve split the old chain. Just make sure you remove both the cams and all the plugs, so you dont bend any valves!

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Re: 650 Timing Chain - Is it easy?

Post by johnr » Fri Apr 18, 2014 7:56 am

yes, its a doddle.
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G0FHM

Re: 650 Timing Chain - Is it easy?

Post by G0FHM » Sat May 03, 2014 12:28 pm

It may well be a doddle (have changed drive chains that way before).... But I need to find a tool that will crimp the ends of the pins on the master link!

My chain tool will split the old one and rivet a new one.... But the pins on the master link are solid, and have to be crimped :evil:

I'm currently locked in a "discussion" with somebody on the GS resource forum who reckons the existing chain is ok, and bets there will be nothing wrong with it!

I haven't measured the 20 links yet, but there is a noticeable slack spot. Get the good area between the cams and there is minimal up and down movement. Get the slack spot between the cams, and there is a good half inch up and down movement on the chain. You can hear it slap on the top guide as it comes tight, and there is definately a slight fluctuation in engine note at idle everytime it comes round.

I don't think I need any vernier calipers to tell me what I suspect!

Harrumph!

J

bobster

Re: 650 Timing Chain - Is it easy?

Post by bobster » Fri May 09, 2014 7:41 pm

Use 2 hammers....rest the soft link against the face of one hammer and pien the soft link pins over with the ball of another hammer.........Its as easy as that!

No special tools needed!

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Re: 650 Timing Chain - Is it easy?

Post by johnr » Sun May 11, 2014 4:10 pm

i agree, 2 hammers, but the one used as the 'anvil' is better if its a bigger hammer with more weight to it, that way the peening on the link doesnt result in the anvil hammer moving about as much.
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