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Large out of spec tappet clearances

  • Thread starter Thread starter KiwiGS
  • Start date Start date
I have found Z1enterprises.com postage charge quite reasonable to OZ and their shims are about 1/2 the price of shims from dealer. However you will be waiting a week or two using the cheapest postage option (that's to Australia, guess NZ is similar).
 
KiwiGS said:
I know this is going to cause much wailing and gnashing of teeth but here goes.
Is there an "engineering" reason why I shouldn?t use shim stock to bring my tappet clearances back into spec?
I would be putting the stock under the hardened OEM shims.
There are a couple of reasons I am considering this.
None of the wreckers or stealerships I have spoken to are interested in selling or exchanging shims.
Yes I can get shims from overseas but it will take a while and the exchange rate and freight make this much more expensive than it should be.
Finally because the gap is too large at the moment and the clearances tend to get tighter over time then next time I have to adjust the clearances I would likely be taking the extra shim out. So it would not be a permanent situation.
Cheers
Click to expand...

NO,NO,NO The shim stock could get dislodged during high rpms causing damage to your engine. It's nowhere near hard enough either, to withstand the hammering it would endure, even for a 10 minute run.

What sizes do you need? I have some spares that I may be able to help you with. Send me a PM with #'s and sizes. It will only cost you a thrashing on that machine when you get it up and running.:lol:
 
49er said:
NO,NO,NO The shim stock could get dislodged during high rpms causing damage to your engine. It's nowhere near hard enough either, to withstand the hammering it would endure, even for a 10 minute run.

What sizes do you need? I have some spares that I may be able to help you with. Send me a PM with #'s and sizes. It will only cost you a thrashing on that machine when you get it up and running.:lol:
Click to expand...
Thanks I did suspect that but you know number eight wire and all that.
I sent you a PM the other day. I'll send another.
Cheers
 
KiwiGS said:
Ok I may not be a GSR superstar but I do know how to check my tappet clearances and have done so before.
I gave this info so that you would know that I wasnt just ignoring your suggestion out of hand.
"The bike ran ok and was quite easy to start, it was standard when I got it. The Plugs were the right heat range and the carbs, airfilter and airbox were all standard.
Also the exhaust ports did not appear to have any more carbon than I would expect.
So it seem unlikely that it is carbon, but never say never I guess."

How with that info do I give the impression that I am looking for a work around to avoid setting the tappet clearances.
Click to expand...
It didnt give me the impression that you were looking for work. Read again what I said. The bike may have run well when you got it, but with valves that out of spec, what did the PO do to get it that way?? Bikes with valves that out of spec are NOT easy to start, unless they've been fiddled with to correct for the out of spec valves....
 
TheCafeKid said:
It didnt give me the impression that you were looking for work. Read again what I said. The bike may have run well when you got it, but with valves that out of spec, what did the PO do to get it that way?? Bikes with valves that out of spec are NOT easy to start, unless they've been fiddled with to correct for the out of spec valves....
Click to expand...

Tight valves would be hard to start, an engine with loose valves should start very easily.
Noisy, perhaps down on power but very easy to start.
 
TheCafeKid said:
It didnt give me the impression that you were looking for work. Read again what I said. The bike may have run well when you got it, but with valves that out of spec, what did the PO do to get it that way?? Bikes with valves that out of spec are NOT easy to start, unless they've been fiddled with to correct for the out of spec valves....
Click to expand...
Read again what I said, apart from the large clearances the the bike was STOCK the PO hadn't done anything to get it that way. FWIW the bike did start easily and was not even that loud in the valve train.
I am not looking for work, but I can not just go around the corner and get shims or any other parts for that matter. Necessity is the mother of invention.
Cheers
 
Coady said:
I have found Z1enterprises.com postage charge quite reasonable to OZ and their shims are about 1/2 the price of shims from dealer. However you will be waiting a week or two using the cheapest postage option (that's to Australia, guess NZ is similar).
Click to expand...

definitely a way to go. ask for usps first class postage, it's the cheapest option to the nz - would cost only a few bucks and you get NEW shims in the exact size you need for the price the wreckers here want for used unmarked shims that you have to measure yourself, with your own caliper, out of a bucket with a hundred shims in it... customer service :mad:
 
Before swapping all the shims out please re check your settings.

On the second time around you can the swap some of the shims around to get the clearance's.

It does seem strange that the bikes that far out and runs out without noise.
 
psyguy said:
definitely a way to go. ask for usps first class postage, it's the cheapest option to the nz - would cost only a few bucks and you get NEW shims in the exact size you need for the price the wreckers here want for used unmarked shims that you have to measure yourself, with your own caliper, out of a bucket with a hundred shims in it... customer service :mad:
Click to expand...
I think you are right mate.
Just had some cowboy try to sell me some oversized shims for $14 each which he told me I would then have to get ground to size.:eek:

Suzuki mad said:
Before swapping all the shims out please re check your settings.

On the second time around you can the swap some of the shims around to get the clearance's.

It does seem strange that the bikes that far out and runs out without noise.
Click to expand...
Trust me I have checked them more than once, and I will do them again before I order some.
I even used two different sets of feeler gauges, If I had a mic' at home I would have mic'ed my gauges as well.
I didn't say there was no noise, just that *I* didn't think the valve train was unexpectedly noisy
GregT said:
If there are any shims 49er can't supply, email me

Greg T
Click to expand...
PM sent mate.
 
KiwiGS said:
What confuses me is why are they so far out.
Click to expand...
Shane, the only thing that I can otherwise think of as a reason for the excess clearance, is when the valves were last adjusted the owner didn't depress the shim to squish out the excess oil before measuring the clearances.
 
rustybronco said:
Shane, the only thing that I can otherwise think of as a reason for the excess clearance, is when the valves were last adjusted the owner didn't depress the shim to squish out the excess oil before measuring the clearances.
Click to expand...
That is a possibility.
I am trying to find out who did the last clearance check, Dunedin is a small town so it shouldnt be too hard. Then I will know for sure.
Cheers
 
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