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When you have done a proper job bringing the bike back to life after following all the great advice here you will have a truly special motorcycle. I have always thought the 73 V7 Sport is more desirable than the 73 Ducati 750SS. For some reason the $$ market fawns on the 750SS and I have no idea why it does to such extreme. The V7 Sport has rarity, performance, and style!
My almost 19 yr old daughter could care less about my bikes in general, Guzzis included. She’s btdt and seen enough. If your daughter finds greater interest, especially in Moto Guzzi, she might like this Moto Guzzi Portraits video about “The Girl by the Lake”- https://www.youtube.com/watch?v=trX0KdIWR60
I have many years experience in the area of automotive repair, especially in engine rebuilding. If this was my engine I would start out by pulling it completely apart and assessing the total condition of all the components. At the moment you are focusing on only one area that needs attention, sure the cylinders need to be repaired, but how about everything else? You are starting in the middle and that is a mistake, take the engine out and strip it down, you may find that it needs everything or if you are lucky, very little. In any event you should pull the crank and clean the sludge trap, while there measure the journal dimensions etc., inspect the oil pump as well as the cam and followers and be prepared to spend some cash. DonG
Do you have a shop manual? https://www.thisoldtractor.com/mg_manuals/workshop_manual_v7sport_750s_850t.pdfPiston specs are on (pdf) page 21 of 135, paper manual page 19. The drawings of how to measure and dimensions is on 98 & 99 of 135.
The two World Record bikes (each approx 750 cc displacement) had SS1-38 carbs, with only intent to run WOT top speed. The 850 LeMans have bigger valves and more to fully exploit 36mm carbs. I would expect 36 carbs on a relatively stock small valve 750cc V7 Sport street bike to be overkill and more trouble than benefit in regular traffic situations. The VHB 30 carbs do hit the wall, but not until you get into 100+mph range.
While I’m managing to get these things off and haven’t sent to Millenium, if anyone has a source or suggestion on how to get a Gilardoni set I’d appreciate it. It would be easier and less to worry about and measure as far as the old pistons. Very low miles and almost none since it was brought back to life after sitting… so hoping for the former. And I may reach out to you if that’s ok once I get it apart to see what I should be measuring and what those dimensions should be. Thanks
I will pile on with all the others. I assumed you were in for a total engine strip, and inspection when deciding to plate the cylinders. If that wasn't your plan, please listen to the sage advice given.
Before I go to get the piston ring out... are these smaller on one side the the other or can they be removed in either direction?Thank you!!
The pin bore? Same diameter the whole way through. Can be removed either direction.
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