Mr Kay Posted February 21, 2009 Share Posted February 21, 2009 Nice bike What are the valve sizes of V11 lemans heads. If I remember correctly, from the Sport 1100 carb onwards inlet and exhaust valves are 0.5mm smaller than earlier big valves. I believe this is to allow clearance with the more extreme standard cam in the 1100s. I'm tuning a Sport 1100i engine to stick in my old LMII and I've gone the other way - my HSR45s arrived this week Link to comment Share on other sites More sharing options...
Greg Field Posted February 23, 2009 Share Posted February 23, 2009 Thanks Greg, I'll take that as a complement! This thing has been a love / hate relationship for years! Nobody in sound mind would spend the time I have in this bike! I guess I enjoy the challenge of constantly trying to make it better. I could easily replace it with something far superior and begin to sleep at night but I dont need to explain this to all you Guzzi guys as you all get it. You might hate it from time to time but nothing stirrs the soul like a Goose! Greg, tell me which way would you go, EFI or Carbs. EFI. You will almost certainly need a PCIII and custom map. Link to comment Share on other sites More sharing options...
1100sport Posted February 23, 2009 Share Posted February 23, 2009 We want to see this!! Who advised you on HSR45? I would have thought that 42s were enough on a 2V engine I'm tuning a Sport 1100i engine to stick in my old LMII and I've gone the other way - my HSR45s arrived this week Link to comment Share on other sites More sharing options...
Mr Kay Posted February 23, 2009 Share Posted February 23, 2009 We want to see this!!Who advised you on HSR45? I would have thought that 42s were enough on a 2V engine My own tiny mind The EFI throttle bodies were 42mm if I remember correctly and the heads will be having a load of work done before the engine is finished. I figured that along with the better quality and consistency of the Mikunis over the usual Dellorto crap I stand half a chance of making the thing run right. Might be an expensive mistake, might not - either way, it'll be interesting to see how the 110 back tyre puts up with it I'll put some photos up when I've got a bit further with it. Link to comment Share on other sites More sharing options...
Greg Field Posted February 24, 2009 Share Posted February 24, 2009 45s won't be too large. Do a little porting work. Do not open up the ports at all. Rather, experiment on a bench, filling in with clay to eliminate all the dead space, to increase port velocities. Link to comment Share on other sites More sharing options...
Mr Kay Posted February 24, 2009 Share Posted February 24, 2009 45s won't be too large. That's lucky Do a little porting work. Do not open up the ports at all. Rather, experiment on a bench, filling in with clay to eliminate all the dead space, to increase port velocities. Heads will be going to Raceco for the porting, I'll be twin plugging them myself. Link to comment Share on other sites More sharing options...
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