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General Category => General Discussion => Topic started by: Guido Valvole on September 04, 2019, 04:53:49 PM
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Update and something new. Update: a couple of weeks ago, m V50ii's oil light came on in 100ยบ+ weather. Most of you who responded thought it was the oil sensor. New sensor and the 21mm deep-well socket to replace it and back to normal. Thanks, and a big sigh of relief.
New: I'm helping a friend resurrect a V50iii. It has sat, inside, for 20 years. 20,000 miles on the odometer. Engine didn't turn over at first, so he dropped a bit of Aero Kroil through the plug holes and let it sit a while. Turned over no problem after that. I pulled the heads off to see how it looked inside. Some light visual scoring but both bores feel smooth, nothing I could feel with my finger. When I had to pull the heads on my Monza at 25k (stretchy exhaust valves), I could still see the cross-hatching on the bores. Not here. Still, looks good to me. Anyone think otherwise? If that's ok, next step is a new wiring harness (hello Greg Bender) and ignition switch since the switch is missing and the harness shows ugly mutilations.
Thanks! CR
(https://i.ibb.co/PhqdKK6/IMG-0946-full-Res-Detail.jpg) (https://ibb.co/PhqdKK6)
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Is that cylinder still usable? Kinda looks like the chrome bores in my loop with 22K miles. It had what some refer to as the "starry night" look to the chrome plating. I assume your cylinders are iron, or nikasil.
Rick.
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V50iii should have nikasil cylinders not hard chrome.
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Nikasil, or nigusil, Guzzi equivalent. Bores feel smooth to the touch. Mangled wiring and lack of ignition switch mean turning it over on the battery for compression/leakdown testing will be difficult. I think only the very early V50s (mk 1, so to speak) had chrome bores. Guzzi did learn a few things before making the smallblock engine, even though quality control can be spotty.
cr
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You can do a leakdown without a battery/starter. That cylinder? Hmmm. Maybe it "looks" worse than it actually is? Dunno, but I think it bears investigation.
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Thanks Chuck! So next step would be to put it back together (won't expect perfection with old head gaskets) and do a leakdown test. My friend has a small compressor and I have no way of getting my compressor to his house as current transportation is two old smallblocks. Shouldn't need too much pressure, though.
cr
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Thanks Chuck! So next step would be to put it back together (won't expect perfection with old head gaskets) and do a leakdown test. My friend has a small compressor and I have no way of getting my compressor to his house as current transportation is two old smallblocks. Shouldn't need too much pressure, though.
cr
80 psi. You *do* have a leak down tester, right?
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I got a leakdown tester when the same bike mysteriously puked about half a quart of oil out the breather a couple of years ago. Didn't solve that mystery, everything checked out ok. I'll see what my friend has for a compressor, probably just a tire inflation thing. We'll figure it out. Will use it on the 4-wheeled MG, too. Bikes are so much easier!
cr