|
|
Post by stepthrutuner on Mar 11, 2011 23:36:57 GMT -5
Could use some good vibes. ThanksTim. Should be a great time on the run I'm sure! Take care. :riding:
|
|
|
|
Post by Fox on Mar 12, 2011 0:01:25 GMT -5
I don't know how I missed this topic. Very cool ideas indeed. Mcgyver ain't got nuthin' on you.  When the reserve fuel tank gets low does the oil light come on? |
|
|
|
Post by stepthrutuner on Mar 12, 2011 10:20:52 GMT -5
No. I can't remember the reason why but the 'low oil' light doesn't work. When I swap over I know it's time to get gas ASAP.
|
|
|
|
Post by stepthrutuner on Mar 13, 2011 1:59:37 GMT -5
Broken lower ring, chipped piston between lands.  Could not find the rest of the ring. :jaw: Where ring snagged ex. prt. maybe from running too hard too soon.... piston expanded before iron cyl. had a chance to.  Underside  Was ready for rings. 0.030" gap on remaining top ring.  Asso piston #2853.   Carbon deposits.   Cyl. views.    I'm going to go with a new pist., rings and little end bearing. Where is a good place to find these? |
|
|
|
Post by 190mech on Mar 13, 2011 5:44:15 GMT -5
It looks like the lower ring maybe was getting thin and finally let go,look carefully inside the pipe for that missing ring part.If you cant find that exact piston perhaps it can be crossed over to a more common type..47mm,10mm pin?What is the pin height?
|
|
|
|
Post by 90GTVert on Mar 13, 2011 6:48:44 GMT -5
|
|
|
|
Post by stepthrutuner on Mar 13, 2011 10:11:48 GMT -5
It looks like the lower ring maybe was getting thin and finally let go,look carefully inside the pipe for that missing ring part.If you cant find that exact piston perhaps it can be crossed over to a more common type..47mm,10mm pin?What is the pin height? As the second photo perhaps doesn't show so well there was heavy pushing of metal on the bottom edge of the ex. prt. Something interesting is that I could not find back clearance anywhere in the lower groove with the broken piece. The same broken piece showed back clearance in the upper groove. |
|
|
|
Post by 2strokd on Mar 13, 2011 10:22:16 GMT -5
I think your right about the "cold choke" or running WOT too soon. The combo of that with tired rings got ya all snagged up!
|
|
|
|
Post by 2strokd on Mar 13, 2011 10:22:52 GMT -5
Im sorry to read this......
|
|
|
|
Post by stepthrutuner on Mar 13, 2011 15:22:22 GMT -5
It looks like the lower ring maybe was getting thin and finally let go,look carefully inside the pipe for that missing ring part.If you cant find that exact piston perhaps it can be crossed over to a more common type..47mm,10mm pin?What is the pin height? As the second photo perhaps doesn't show so well there was heavy pushing of metal on the bottom edge of the ex. prt. Something interesting is that I could not find back clearance anywhere in the lower groove with the broken piece. The same broken piece showed back clearance in the upper groove. Checking clocer today with the ring turned the normal way I find back clearance. |
|
|
|
Post by stepthrutuner on Mar 15, 2011 21:01:06 GMT -5
It looks like the lower ring maybe was getting thin and finally let go,look carefully inside the pipe for that missing ring part.If you cant find that exact piston perhaps it can be crossed over to a more common type..47mm,10mm pin?What is the pin height? This kit has a slightly wider bore than usual - 48mm. This TP piston won't even go into the old 47.6mm AIRSAL jug I have. |
|
|
|
Post by 190mech on Mar 16, 2011 5:47:37 GMT -5
Autotech355 sells 48mm pistons,they are for a Mina,but might work..
|
|
|
|
Post by 90GTVert on Mar 16, 2011 6:56:47 GMT -5
|
|
|
|
Post by stepthrutuner on Mar 16, 2011 7:39:00 GMT -5
My TP kit piston has a compression height of 26mm. That piston seems to have a bit higher ch. Where are the numbers when you need them?
|
|
|
|
Post by 90GTVert on Mar 16, 2011 8:13:47 GMT -5
Yeah, that does look a bit taller. Sorry, just not coming up with much for 48mm piaggio.
|
|
