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May 18, 2018 11:54 am
May 18, 2018 11:54 am
Subject: Re: Tappet clearances - why the variation?
Good point Hugo and thanks for the interest. I still think there's an arbitrary look about the doubling of the tappet clearance but I chickened out in the end and went for the 8 thou recommended for my LMB cams. This despite Tim Wadsworth's wise words and his engine throws out about double the horsepower of mine.
Incidentally, the other day I put my car on a local dyno and was a bit disappointed that, despite a higher CR and fancy cams, the peak output calculated back to the flywheel was just the 60 bhp claimed by Lagonda in 1927. Torque fell off a cliff at about 3200 so Tim's downdraught head must be very, very effective to let him rev to 5000.
Best of luck with the project, it sounds a great buy. I look forward to admiring it at Wisborough Green before long.
Good point Hugo and thanks for the interest. I still think there's an arbitrary look about the doubling of the tappet clearance but I chickened out in the end and went for the 8 thou recommended for my LMB cams. This despite Tim Wadsworth's wise words and his engine throws out about double the horsepower of mine.
Incidentally, the other day I put my car on a local dyno and was a bit disappointed that, despite a higher CR and fancy cams, the peak output calculated back to the flywheel was just the 60 bhp claimed by Lagonda in 1927. Torque fell off a cliff at about 3200 so Tim's downdraught head must be very, very effective to let him rev to 5000.
Best of luck with the project, it sounds a great buy. I look forward to admiring it at Wisborough Green before long.