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  1. S

    Guzzi cafe racer,LSR racing

    Intake tuned length 13" 7250 rpm. Peak power at 8400 rpm, red line at 9250 rpm. Engines making peak power at lower rpm should have extended intake tuned length for best torque and power curve. Åke Jonsson Engineering.
  2. S

    Intake port air flow figures and valve lift.

    Bill, I like to know the size of your mushroom lifters. Where did you find them? I have been looking at VW lifters. Ernst, if your heads do not flow well over 8mm you sure need a good porting job. The engine in question is putting out very close to 100 whp @ 8400 rpm. I do not know the...
  3. S

    Scandinavian Classic Racing Cup is on the way

    I just got home from the Scandinavian Classic Racing Cup at Sviestad, next to Linköping, here in Sweden. The guys from Norway did well on their Moto Guzzi bikes. Knut Holte (can be viewed here on a picture, red bike no. 14) finished as no. 5 in the Forgotten Era Class in spite of riding another...
  4. S

    Scandinavian Classic Racing Cup is on the way

    The cams from WEB are hardwelded. More information can be found on their web page http://www.webcamshafts.com/ Now I am on to the Sviestad Race Track to see Rolf Johansen and the other guys race. Åke Jonsson Engineering, Sweden
  5. S

    Scandinavian Classic Racing Cup is on the way

    Just took the Knut Holte race engine apart. After four seasons of racing the WEB cams does not show any sign of wear. One lifter showed very minor pitting which a a well known issue on all older Guzzis. The CL77 rod bearings does not look good but nothing bad has happened. Much worse with the...
  6. S

    Scandinavian Classic Racing Cup is on the way

    The Megacycle camshaft 620-X8 mentioned here is actually the famous Norris RR-3 camshaft which I helped Norris develop during the 70´s. Megacycle purchased the cam grinders and most of the master cams from Norris when he retired in 1990. Norris passed away on October 12, 2008 at 80 years of age...
  7. S

    Intake port air flow figures and valve lift.

    Have just finished a 1105cc race engine based on a LeMans IV for a customer. Thought you guys are interested in how much air flow can be attained from a D-shaped intake port having a 50mm valve still keeping the air velocity up. Valve lift 2,5 mm flow 65,8 CFM at 28"...
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