Lucky Phil

Original oil pressure relief valve spring on the left and replacement on the right. Original wont get you past 55psi crack pressure, new spring takes you to the 70psi required. Heads are on, just sump to fit, prime the oil system then fit the oil pump drive, front cover and do the cam timing. Ciao

Thanks antmanbee, very kind of you. Ciao

Thanks Pete, much appreciated. Ciao

I'm with you Pete if someone could add me to your order I'd be greatfull and could help out with the shipping of course. Ciao

Hi Meinolf, is there any difference between the old large style TPS voltage profile and the later smaller version. I'd like to use the Centauro throttle bodies with the larger style TPS when I fit the engine to my 2000 V11 greeny which uses the 15RC ( I think?) ecu and smaller TPS. Thanks Ciao

What about the ignition pickup/pickup gap? Ciao

If you need to use a hose clamp around the filter then there's something wrong with the filter the filter threaded adapter or your installation technique. I dont feel the need for a hose clamp around any of the other 6 vehicles I own apart from the Guzzi why should it need one? Ciao

I just do it through the round port access cover, and yes it can be tricky to get the thread started. Ciao

Just some feedback on the timing gears. Rode into the city yesterday for lunch with my wife which entailed about 60klms of freeway riding at 100 klm/h in 26 degC heat at around 2900-30000 rpm indicated. It still coughs and stumbles at around 3000 rpm occasionally. So the gears aren't the answer to that it seems. looks like mapping. Ciao

Well its been a busy time with other stuff unfortunately such as my lathe breaking down and requiring motor disassembly and centrifugal switch work and a new start capacitor. Its still a work in progress as I await the new capacitor.The rocker shims arrived and a new learning in the form of a rocker arm with end faces that aren't machined perpendicular with the pivot axis so getting the end float right is a matter of using the smallest gap. Its too awkward to hold in the lathe to machine the faces and I dont think it will be an issue so I'll leave it as is. The new Oil pressure spring also arrived so it was onto testing the crack pressure with that fitted. It wasnt a successful outcome I'm afraid. The new spring is around 2 mm longer than the old spring but its still not enough to get me the required 70psi crack pressure. Even if I shim the spring to a silly amount its still not enough. So after time spent lapping the valve and getting the sealing faces as perfect as they are ever going to be I'm here to say that there is no way 70 psi of oil pressure is possible with this spring. I figure that the valve will need a minimum of 6mm of stroke. The spring with 18mm of preload will accomplish that but all I can achieve is 55psi crack pressure. The new std spring is in the 10.8lb of seat pressure at 18 mm of preload. So either I accept 55 psi or look for a heavier spring. So here's one for the more knowledgeable than I. I have tested the new springs at 0.6lbs/mm ( I know mixed parameters) so at 18mm of preload I'll have a seat pressure of 10.8 lbs. My calculation for spring pressure required is as follows. Assuming I need 70psi, for crack pressure and assuming I had 1 sq inch of piston/valve area then Id need a spring that provides 70lbs of seat force. What I actually have is a valve that presents 95.4 sq/mm to the oil supply which is 14.8% the area of 1 sq/in (which is 645.16 sq/mm) so 14.8% of 70 pounds is 10.36 pounds of seat pressure required. The new spring is giving 10.8lbs of seat pressure and I'm nowhere near the 70psi crack pressure. Any Ideas? Is my spring rationale calculation lacking? Spring tester. New spring Old spring New spring Old spring Ciao

Thanks Kevin, I'll go with .2. I managed to juggle shims around as they are all a little different and got 2 rockers in tolerance but 2 are nowhere near. It seems the inconsistency is in the rocker length not the carrier Ciao

Do you mean that because technically the V11 pictured here is below sea level, its like a boat anchor docc Ciao