Polini 210 ALU, did your rings need filing?

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Davidsquaredson
registered user
Posts: 222
Joined: Sun Jun 10, 2012 11:41 am
Main scooter: Early Eibar Jet 200
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Sun Mar 15, 2020 9:59 pm

I’ve got 6 scooters, was working on more than one when I put my polini kit on. I have about 500kms on it. Was thinking about it today, and I can’t remember checking the rings in the cylinder. It’s the problem of jumping between several projects on the go. I probably did, but before I open it up to confirm, did people find out of the box are the rings the correct size?

Thx
David
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carpe scooter diem

1974 Rally 200
1965 Li150
1963 TV175
1974 Eibar Jet200

eibargum
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Posts: 368
Joined: Wed Jan 07, 2009 6:38 pm
Main scooter: Vespa PX210 Polini
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Mon May 04, 2020 12:20 pm

Mine were fine, cant tell you the gap as a mate measured them while I was porting the cases, its done a couple of 1,000 miles since without issue, had trouble with the squish being huge, got it down to 1.4mm, the circlips were a tw@7 to get on though, I run timing at 18 degrees & it sits around 320f through a SIP 2.

Davidsquaredson
registered user
Posts: 222
Joined: Sun Jun 10, 2012 11:41 am
Main scooter: Early Eibar Jet 200
Contact:

Sun Jan 03, 2021 5:23 pm

eibargum wrote:Mine were fine, cant tell you the gap as a mate measured them while I was porting the cases, its done a couple of 1,000 miles since without issue, had trouble with the squish being huge, got it down to 1.4mm, the circlips were a tw@7 to get on though, I run timing at 18 degrees & it sits around 320f through a SIP 2.
I know better but just installed the kit and started running it. At 600 kms I opened it up. Rings are fine. I had same squish issue and got rid of the head gasket. This got it down to 1.4. I believe it’s up around 1.8 you get pre-ignition. My piston had too much carbon, I’m running too fat. I was doing 3% for break in, thinking of dropping down to 2%. I’m also running a SIP 2. What jetting do you have?
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carpe scooter diem

1974 Rally 200
1965 Li150
1963 TV175
1974 Eibar Jet200

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