Six Hundred and Sixty

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Evilchicken0
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Bike owned: Bimota SB6 Yamaha FZR 3TJ x2
Location: Lundin Taan
Re: Six Hundred and Sixty

Post by Evilchicken0 » Tue Nov 07, 2017 1:36 pm

Have you torn it down ? is it from all 4 pistons .... etc

mark28
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Re: Six Hundred and Sixty

Post by mark28 » Tue Nov 07, 2017 5:02 pm

Yes the front piston skirts on all 4.The lower edge is very thin so I'm going to grind them of and then it won't protrude below the barrrel at BDC.There is no contact anywhere so must be piston rock.It is a track bike so lives at high rpm.

Evilchicken0
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Location: Lundin Taan
Re: Six Hundred and Sixty

Post by Evilchicken0 » Tue Nov 07, 2017 5:23 pm

They didn't pick up on the barrels then.
It might be a high rev thing then. I was looking for other people to commission Wesco pistons but didn't find enough people

mark28
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Re: Six Hundred and Sixty

Post by mark28 » Tue Nov 07, 2017 5:37 pm

Engine only wants to go to 12000,no benefit in going higher.Wiseco's and other aftermarket pistons ae shorter too so I may have to replace rings more often with the skirts reduced.

Evilchicken0
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Posts: 9352
Joined: Tue Apr 29, 2008 8:59 pm
Bike owned: Bimota SB6 Yamaha FZR 3TJ x2
Location: Lundin Taan
Re: Six Hundred and Sixty

Post by Evilchicken0 » Wed Nov 08, 2017 11:16 pm

If I ever get my arse in gear I'll bear that in mind


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