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Bits in sump pan.

  • Thread starter Thread starter Froudster
  • Start date Start date
A work collegue who has the same bike as mine (he's owned it for 28 years!!) is going to let me borrow the rotor locking tool and the puller tool to get it off, so I can investigate the starter clutch.
I'll let you know what I find:)
 
Froudster said:
What sort of mileage would be needed to wear the starter clutch to that extent, as this one has only done 25000?
Click to expand...

The actual mileage might not be important, it's how many times the starter has been used. eg if the bike was used to commute to and from work which was only a mile away the starter has been used 25,000 times, if it's been used mostly for cruising 100 miles at a time then the starter has only been used 250 times.
 
Very true Flying Fish:p

I have just had a look at the starter clutch from an 80's GSXR 750 and the set up is the same as the GS one. What concerns me is that the GSXR one is cast and riveted steel construction with the rollers and springs and the piece I have found in the sump is aluminium. I cannot believe that the GS would have used an aluminium construction....but I'll find out later in the week when I strip it down to investigate.
 
The aluminium isn't from your starter clutch - that's all steel. A wild guess is that it's a bit from inside your stator cover but it could be from a few places other than that.
 
Yes, and that bit of aluminium looks like it's from some piece of engine casting that's suffered a whack on one side (small circular side) that has taken out a much larger diameter area on the other side... :confused:

I'm wondering if it's from an event unrelated to the starter clutch. [Perhaps the drive chain has broken at some stage in the past, knocked a hole in the crankcase, then the PO has repaired it without bothering to remove the fragment from inside the engine? That would be daft I know... but with some PO's all crimes are possible...]

Sorry, that's enough speculation! I should take up writing for the tabloids at this rate. :oops:
 
The large piece looks to me as though it is a piece of crank case where a blind hole was located and the PO put too long of bolt in it. then when tightened down it popped the back side of the case out. It appeas to be about a 10mm bolt that was threaded in there going by the diameter of the machined circular spot. Well, that is what ir looks like to me anyway. I don't know which spacific bolt that would be but if I come up with any ideas i'll post them.
 
Based on the BLACK colour of the backside of that large piece, the fact that there was some sort of bolt in it apparently, and the other items involved, i am still of the opinion it is part of the CAST STEEL (which has that rough black texture on the inside) rotor. Could be wrong, but bottom line is no matter what, you're not going to know untill you pull that stator cover off and have a looksee.
 
76FJ55 said:
The large piece looks to me as though it is a piece of crank case where a blind hole was located and the PO put too long of bolt in it. then when tightened down it popped the back side of the case out. It appeas to be about a 10mm bolt that was threaded in there going by the diameter of the machined circular spot. Well, that is what ir looks like to me anyway. I don't know which spacific bolt that would be but if I come up with any ideas i'll post them.
Click to expand...

Alrighty then, just stripped the starter clutch out and it's as fresh as the day it was fitted. No sign of any wear at all:D
I'm gonna go with what you said above. Without stripping the entire motor we're never going to solve the mystery 100%. I suspect the bolt in question could have been the r/h side bottom sprocket cover bolt as the one I removed was far too long and the piece of aluminium pushed out would have dropped straight into the sump pan. The enclosed pic shows the mark left by the bolt when it was screwed in too far.

Thanks for all your help and suggestions.....And now I'm going to just ride the bike and enjoy the experience:p
 
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Haha, glad to see I'm not the only one to pull mystery meat out of the sump!
 
Definitely a starter clutch part in that lot, though. So what this now must mean... :-k ... is that a PO went and fixed a stuffed starter clutch, but never cleaned out the debris.

So it looks like we're back to SqDancerLynn's original advice: just ride the bike! (aka 'don't worry, be happy'). :)
 
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you may want to pull the oil every few thousnad miles to just keep things in check. also might not be a bad idea to cut apart your old oil fillter when you change you oil and inspect it for debris too.
 
Those are definately NOT starter clutch bits. The SC is made from cast iron and steel, the parts in the sump apart from the pin are aluminium. I changed the oil and dissected the filter and it was clean.
 
another possibility

another possibility

i think someone just threw in those few bits of scrap while you weren't watching, so to give you a scare, just for fun :rolleyes:
 
Froudster said:
Those are definately NOT starter clutch bits. The SC is made from cast iron and steel, the parts in the sump apart from the pin are aluminium. I changed the oil and dissected the filter and it was clean.
Click to expand...

This is a picture of the starter clutch repair kit. You may recognise a bit or so.
 
Matchless said:
This is a picture of the starter clutch repair kit. You may recognise a bit or so.
Click to expand...

Thanks Matchless.
I had the starter clutch apart yesterday and none of the bits I found in the sump were from it:D
 
Froudster said:
Thanks Matchless.
I had the starter clutch apart yesterday and none of the bits I found in the sump were from it:D
Click to expand...

When removed my sump I actually found 3 springs and two of the rollers as well as one backstop from a starter clutch. The one installed was also faulty and I found a 4th spring and roller inside the rotor attached to the magnet. It had cracked one of the magnets and damaged a stator coil. So I know now that my bike is on its 3rd starter clutch!
Those are definitely then from your starter clutch's predecessor.
I agree with that other piece, definitely an overlong bolt that pushed a bit out somewhere, sometime maybe long ago.:)
 
Guys if you check the picture in post #12 you will see that the part in the sump was a roll pin, not a part out of the starter clutch. The hollow pin in the starter clutch that houses the small spring does not have a slot from end to end. Not on my GS anyway.
 
Suzuki_Don said:
Guys if you check the picture in post #12 you will see that the part in the sump was a roll pin, not a part out of the starter clutch. The hollow pin in the starter clutch that houses the small spring does not have a slot from end to end. Not on my GS anyway.
Click to expand...

Don,
My eyes are going! Did not see thatin the picture.:oops:
 
Matchless said:
Don,
My eyes are going! Did not see thatin the picture.:oops:
Click to expand...

We're ALL getting older. I had been watching this thread for a while and wasn't able to agree with other's opinions, but did not want to spoil the thread. Cheers.
 
:D Not only that, but the bit of roll pin I found is only about 5mm long and 2mm in diameter. The starter clutch "Pins" are about 13mm long and 4mm diameter....and hollow:confused:

I've just been out for a 40 mile blast and it was a hoot.........I've still got a silly grin on my face as I'm typing this:p
 
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