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From the "One picture is worth a thousand words" file, here are two pictures.
Som ting Wong...sorry about the transmission Found some Lario BUB mufflers if anyone interested https://wildguzzi.com/forum/index.php?topic=109263.0
I had hoped to repair and sell it but, after the financial surprise of the gearbox that is not a viable proposition as I would lose too much so I may as well keep it and enjoy it.
You can check the gear selected spring, if it has one winding it is the original one. These tend to brake at some point, the upgraded guzzi spring has two windings, and solve the problem.
with the right tires the lario's handling is great, i would love a V7-3 engine to fill the gap left by the current 4 valve engine that dropped yet another valve....
my lario did 40.000 miles between dropping valves, i was convinced i had the valve train problems solved until it dropped nother valve. if your conti's are like the pirelli diablo scooter tires on mine i think you will be impressed.
i'm pretty committed to getting it right, the engine is great if it runs well. I just need to locate parts, and think of some extra modifications. I already have the upgraded valves , springs, spring retainers and camshaft. Next on the list are the tappet screws and probably a reground camshaft ( if i can find somebody to do it) ,the lack of quietening ramps on the stock cam might be part of the problem. i am also looking as a oil jets on the cam the lack of quietening ramps is less of a problem with the lighter two valve valve train. i like the idea of having a hot cam anyway , the lario does not run out of breath like the 2 valve engine does, so should benefit from a hot cam.
One of the aftermarket cam manufacturers (I've forgotten the name.. I'm old) did the oil jet thing, but that wasn't the answer, either.[/quoi was thinking of oil jets aiming at the cam from the side, instead of drilling the cam. KTM uses oil jets on its singles shouldnt be too hard to do, adding a oil gallery on the side of the cam i'm not on my first lario rebuild, but i have yet to find the silver bullet modification solving the valve issues i also have a hotrodded 350 engine (550 CC) that is even harder on its valves
QuoteOne of the aftermarket cam manufacturers (I've forgotten the name.. I'm old) did the oil jet thing, but that wasn't the answer, either.[/quoi was thinking of oil jets aiming at the cam from the side, instead of drilling the cam. KTM uses oil jets on its singles shouldnt be too hard to do, adding a oil gallery on the side of the cam i'm not on my first lario rebuild, but i have yet to find the silver bullet modification solving the valve issues i also have a hotrodded 350 engine (550 CC) that is even harder on its valvesSilver bullet is some simple measuring tools, valve spring pressure gauge was only one I had to buyThan abcAssume nothingBelieve no oneCheck everythingIt’s all the misinformation (fake news?) that creates disaster
Silver bullet is some simple measuring tools, valve spring pressure gauge was only one I had to buy
Gentlemen,I am aware this is a change of subject, however the experts appear to be assembled hereI am rebuilding a Lario from a crate with (all) the parts and now I had a good look at the airboxThe airbox has a "sump", before the connections to the carbs branch offI would expect the drain connection at the lowest point of the "sump"Actually there are 2 connections, both same dimensionsThe one at the lowest point is "not open"The other one, next to it, slightly higher up, does give access to the sumpThen, halfway the airbox , there are, at the bottom, two more connectionsThe big one of the two is pluggedI would like to understand this set-upCan you help?Thank you very muchEvert Wijnberg
may be , or may be not , we'll see if you manage 50.000 miles on a hard worked engine. i have seen engines built by professional tuners using nice kibblewhite and carillo finest parts explode. The factory paris dakar efford was not very successfull, despite serious funding. (DNF because of blown engines ) I expect the guzzi factory to have owned a valve spring pressure gauge at some point. i use a digital scale and a milling machine with DRO instead of a spring gauge. works for me.