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The common valve replacement option is using new valves and springs from a suzuki gn250 correct?
Search for “ why do Larios drop valves ” thread on here for some of it, if you’re up for a proper build, it’s doable but not as easy as quick net search makes you think
This. That said, it's worth it. The Lario is a hoot.
Or you can use Guzzi Nevada springs.I suggest that you check the camshaft. You can do that by measuring how much the valves opens. It should be something like 8mm. If it is much less, you will need a new camshaft.
hardening on cams/ tappets only a few thousands of an inch, use dial gauge not ruler ! 8mm not a number that’s relevant
i have been running nevada springs in mine too. i cant claim complete success, it still dropped a valve , but that is another story.
Haha, brilliant, I struggled with wording for a while but get it nowOnly one of 8 valves nevada’d broke, therefore 7 of 8 didn’tSo the optimist might say 87.5% successful !!Guess we’ve scared the op off by now
To be precise, the valve did not break, the collets came out due to the spring seat wearing through. not sure if that qualifies as a dropped valve. having said that , i've got more than 100.000 miles on my lario, most of them as daily transport. I would still be riding it if i could find a servicable cylinder head.
If worst comes to the worst, the modern 2 valve smallblock engines fit. For that kind of money, a lower mileage modern smallblock (say, the V7) would be an viable option, although not the cheap historic registration. Happy hunting.
OP, there is another guy on the site as well as Martin, Mike and Mal who have some experience with these grenades fine machines. Brian, who goes under the name of Iceblue (he lives in one of the Scandinavian countries) is a smallblock man and has a few 4 valvers.There was anther guy whose name escapes me at the moment, who was a bit like Martin and warmed one up a bit. Managed to get it reliable. Mal, can you remember who it was? He was working on it at the same time as Mike Wrenn.
....I’ve seen the engine swap mentioned before, but no descriptors on WG that I’ve seen. Anybody describe the mate up?...and would a V85 swap be feasible? - asking for a friend.
Looks like there are many fixes here for the valves. Is it possible to just ride the bike with it's original valves and new springs and keep it well under the red line assuming you keep the valves adjusted to spec. I mean if this bike as the owner said is still running well, may as well just keep those valves adjusted and ride until it blows up one day. Then just replace the engine with one from a v7 or nevada. I mean the styling particularly the instruments and the cockpit are what is really drawing me to this bike. If I ever get out of this bloody hotel quarantine in Sydney I reckon i'll just drive up to the gold coast with a trailer to see it. If it is still around.
For those curious here is the add by the way. I think for the price and all that has been discussed it is a bit too much money for all the potential work. There is a Guzzi Breva 750 for way less hanging around I might check out. Should be a much more reliable mount. https://www.gumtree.com.au/s-ad/hemmant/motorcycles/moto-guzzi-v65-lario-1985/1238306091
I know that rack looks bloody awful right.First thing to do would be to take that off. Fit some nicer panniers later if touring.