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+--- Thread: Shim Change and Mileage (/showthread.php?tid=64530)
Shim Change and Mileage - N A Chess - 18-07-13
On 48,000 miles on my '99 FZS600 and engine sounds sweet still. Any ideas at what mileage the shims normally need changing?
I commute on urban roads mostly and so never really get the chance to open her up. Serviced every 4000 miles. I'd be interested to hear other riders' mileage when shims were changed.
Ride safe
Re: Shim Change and Mileage - Paul - 18-07-13
Assuming you mean the valve shims.
I've done 70,000 miles on mine, never re-shimmed them and it still runs o.k.
Re: Shim Change and Mileage - Dead Eye - 18-07-13
88k on mine and to my knowledge its never been done
I don't think it has any issues relating to the shims
Re: Shim Change and Mileage - Fazerider - 18-07-13
There needn't be a caliper fault, though an overhaul is a good idea anyway. A bent disc can be caused by incompetent drivers giving the bike a nudge when parking… if they get the angle right they can easily apply enough force to bend the right disc without knocking the bike over if it's on the sidestand.
Whatever, it certainly sounds like you need a replacement. I get about 40k from them and have bought second-hand ones on ebay several times without a problem, though splashed out on some new EBC discs about 18 months ago.
If your bike is still on the originals then the bolts will be a bit stiff. I prop the wheel up over a low flame on the stove for twenty minutes until the alloy is getting uncomfortable to touch, then they can be undone without any drama because the heat weakens the thread lock and expands the screw holes due to the different coefficients of expansion of steel and aluminium.
Re: Shim Change and Mileage - N A Chess - 18-07-13
Great. Sounds like I have plenty of mileage left then.
I love my Fazer, me.
Re: Shim Change and Mileage - Dead Eye - 18-07-13
(18-07-13, 06:21 PM)Fazerider link Wrote: There needn't be a caliper fault, though an overhaul is a good idea anyway. A bent disc can be caused by incompetent drivers giving the bike a nudge when parking… if they get the angle right they can easily apply enough force to bend the right disc without knocking the bike over if it's on the sidestand.
Whatever, it certainly sounds like you need a replacement. I get about 40k from them and have bought second-hand ones on ebay several times without a problem, though splashed out on some new EBC discs about 18 months ago.
If your bike is still on the originals then the bolts will be a bit stiff. I prop the wheel up over a low flame on the stove for twenty minutes until the alloy is getting uncomfortable to touch, then they can be undone without any drama because the heat weakens the thread lock and expands the screw holes due to the different coefficients of expansion of steel and aluminium.
Pretty sure this was supposed to go in to the Front Brake Discs thread that FizzyPies started...
Re: Shim Change and Mileage - Fazerider - 18-07-13
(18-07-13, 09:29 PM)Dead Eye link Wrote: [quote author=Fazerider link=topic=8909.msg88643#msg88643 date=1374168114]
There needn't be a caliper fault, though an overhaul is a good idea anyway. A bent disc can be caused by incompetent drivers giving the bike a nudge when parking… if they get the angle right they can easily apply enough force to bend the right disc without knocking the bike over if it's on the sidestand.
Whatever, it certainly sounds like you need a replacement. I get about 40k from them and have bought second-hand ones on ebay several times without a problem, though splashed out on some new EBC discs about 18 months ago.
If your bike is still on the originals then the bolts will be a bit stiff. I prop the wheel up over a low flame on the stove for twenty minutes until the alloy is getting uncomfortable to touch, then they can be undone without any drama because the heat weakens the thread lock and expands the screw holes due to the different coefficients of expansion of steel and aluminium.
Pretty sure this was supposed to go in to the Front Brake Discs thread that FizzyPies started...
[/quote]
I was just looking back at that thread and wondering where the hell my post had gone. :lol
Clearly one glass of wine is too much...
Re: Shim Change and Mileage - His Dudeness - 19-07-13
You won't be able to tell if there's an issue by listening to it. With the older style tappets you could because they tended to loosen over time so you'd the clicky clicky sound. Loosening is not a problem. Shims on the other hand are more stable than tappets so they don't need to be adjusted as often but the clearance tends to tighten on them as the valve wears into the head so the gap gets smaller and they stay quiet rather clicking so you're not going to hear anything and if you leave it to the point where performance is effected then its probably already damaged them. If in doubt always check them is the way I'd look at it.
Re: Shim Change and Mileage - N A Chess - 19-07-13
Cheers Dudeness - useful to know. I was obviously showing my age - coming from the days when you adjusted 'em with a spanner and feeler guage...........
No performance issues and so I assume everything is as it should be.
FZS 400 ??? :eek [size=78%] Grey import??[/size]
Re: Shim Change and Mileage - unfazed - 20-07-13
Foolish thinking and false economy for the sake of a few hours work. I have checked many over the years and whereas most are fine there have been the odd few which are tight and loose. A Fazer 1000 I checked recently at 20000 miles required 9 to be changed, 8 were tight. Had to buy 3 shims and managed to get others close to specifications by swapping them around. My own 600 needed three changing at 50000 miles and will be checking it again shortly before it reaches 80000.
Alway work on the basis: A loose tappat annoys the rider, a tight on annoys the engine.