Leaderboard

I did figure out a way to display this illustration, but not from the Triumph site; from the source they referenced on Quora. Seems Lucky Phil knew all of this already. No surprise, it's all news to me . . . https://www.quora.com/Why-do-BMW-brake-calipers-have-multiple-pistons-that-are-different-sizes-in-the-same-caliper/answer/Vk-Gopalakrishnan

My silver V11 & a friends new acquisition, a 1963 Ariel Golden Arrow, a 2 stoke 250 twin, built in Small Heath Birmingham nearly 60 years ago. By the time the Ariel Arrow stopped production in 1967, the British bike industry was almost finished with Small Heath itself closing in 1973

Just thought I would share my habit of looking for bikes for sale. https://www.facebook.com/marketplace/item/806948087386049/

I never listed this bike on CL and continue to ride it. Still technically available if someone who wants it contacts me. I am in Seattle (link to pics above). Cheers! Bob

So yours doesn't look like a sink faucet, clear stream? If it looks like the picture and they say that's good, it's good.

Until someone pulls a real-life example to present, I'll say that there is *no* case in which an injector should have a steady stream. The entire fuel mixing scheme demands atomization, whether gasoline or diesel. It sounds like the pintles are stuck wide open, which makes no sense unless the computer is demanding it, and not possible on a bench without a signal connection. Here's a video showing how to test the signal to the injectors using a 'noid' light- back in the early days of EFI we made our own with a 3- or 6- volt dc light bulb, soldering wires to it to shove into the harness plug. Edit; sorry I missed the previous mention of noid lights. You can simply make your own from a 6v taillamp bulb or flashlight bulb and some thin wire.

I believed you, I just wanted to learn more about it. As they say, sometimes a picture is worth a thousand words. And I had to "unlearn" some things I thought I knew.

Yes docc you have it in reverse. I actually know this stuff and I have a calliper in my hand but you and scud might want to check some Yamaha or Honda forum or something. Phil

Made in USA. I'm in. Even if Valpolini is better, I've never put a second set of paper valve cover gaskets on any of my bikes.

it sure would've been easier if Guzzi just made the newer gaskets as superseding the old ones. And to think, this forum has been going for years and we didn't discover this until now.

Yup. Weird thing with the CARC bikes though. If you use the stock, *Paper* gaskets they will fail. No ifs or buts. Why these later models can't cope with them I have no idea. All I can assume is it has something to do with the overall shape of the rocker cover. They certainly seem *Taller* than the earlier ones up to the V11 but whether that allows more or different expansion I have no idea. Thing is though no matter how careful you are they will split and squeeze out. The Valpolini gaskets can't tear and are a 100% reliable fix.

Thanks for the clarification. Just talking gasket compatibility here. If I carry these spare V11 "square fin"(silicone) gaskets for someone's bad day, what will they seal (if even temporarily)? Sure: V11 (Sport/LeMans/EV), but also earlier square fins? Later BigBlocks (1100, 1200 2Valve? 4Valve? "8Valve?") All of these valve cover gaskets are interchangeable?

@Goofman knows of this thing he speaks . . . South'n SpineRaid, 2015

And the valve cover gasket thickness could compromise that reach? Wow, that is tight tolerance!

Really? Then tell me the ones I took off my EV don't look like rolled up caterpillars. Perhaps if I put them in a book and closed the cover?

I wasn't going to post again, but, the PRV release pressure can be adjusted by shimming the spring to compress, making the valve lift at higher pressures. With the HiCam engine my own experience was the OEM spring acuation wasn't all or nothing, it partially lifted, prior to full lift When I conducted static tests on the valve I found the lift pressure with cold oil on the bench was higher than the pressure when I ran the valve in the engine. My best guess why this occurs (and it's no more than that) was the valve cycling inside the running engine. The result was the running pressure in the engine was lower than the lift pressure obtained on the bench. I also want to thank @Lucky Phil for all the time and help he generously gave me and the solution of installing the Griso spring into the PRV in the HiCam. Without it I'd still be groping around in the dark. The aforementioned results were with the 4v/v engine and it's different to the 2v/v engine. I've never had the need to conduct any tests on a 2v/v engine as I've never experienced any problems with the 2v/v bikes. On both of mine the pressure is stable at approximately the PRV lift pressure of 60psi once the engine is up to temp and revs over 2ks. No idea if that's any help or not but thought I'd add it just in case

More required reading . . . http://archivio.animaguzzista.com/page_builder.php?fileindex=maestri/maestri_index.txt&filebody=maestri/carcano/carcano_body_e.htm

I had always thought Carcano's hotrod FIAT 500 was a "Topolino" that was produced from 1936-1955: Easy to see a Guzzi V-Twin behind that grill! Yet, in the 2002 Anima Guzzista interview with Ing. Carcano, he is quoted: "At that time I also built a V, 500 cc first and then a 600 cc. I put it on a Fiat 500. I remember that it gave me a lot of satisfactions. It was a motor, the 600, giving 36 or 38 HP. Exactly twice the output of the original Fiat engine, giving 18-20 hp. " Since the 1936 -55 FIAT 500 "Topolino" only made 13 hp, Carcano's hotrod 500 must have been a Nuovo 500 or a 500D:

I don't understand that. If a V11 valve cover gasket, of whatever type (Silcone, metal, OEM) is fitted to a later BigBlock, it will seal the valve cover? Yet the plug lead will no longer reach?

I count three different gaskets in the discussion. The originally posted silicon gaskets ("Real Gasket"), the highly recommended metal gasket with self bonding surfaces, as well as references to the OEM "paper" (actually composite) gaskets. Frankly, I've found the thread hard to follow.