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1000SP Progress(?)

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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 2019 at 08:00
On my SPIII a past owner had removed the sprung Guzzi one and fitted (badly) the Stucci one. I even got the sprung one included in a bag of bits, so it went back in.
The whine of the other one was excessive and then I found the broken spring.
Brian.

Better 5 minutes late in this world than years early in the next.
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iceni View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iceni Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 2019 at 08:07
I've decided to exercise caution at this stage and stay with the standard cam chain tensioner, which isn't a sprung one, being in a fixed position locked by two bolts. Previously, when I removed the alternator cover, one of the M6 bolts sheared off so, with the cover off I've been able to effect a mechanically sound and acceptable repair, so its not been a waste of time at all. With the heads off again, I filled the chambers with white spirit and left them overnight which indicates there's a slight leak on an exhaust valve, so I'll re-lap that.
Pardon my ignorance, but how do you do a leak down test?


Edited by iceni - 19 Apr 2019 at 08:10
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 2019 at 13:09
To be honest I have never done one.
But the idea is you put compressed air into the cylinder via a modified spark plug at TDC and listen to where the leaks are.
You could then tell if a valve is leaking or the bores.
Brian.

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