Lotus Elan and Lotus Elan Plus 2 Forums

SJ Lambert wrote:How much torque do the best camshafts produce days?

I'm planning on using a TILTON clutch with a 200 ft/lb capacity, I reckon that in an open wheeler, that it will be fine. I don't want to use a heavier clutch because besides being "heavier" I'd have to move the slave cylinder from a remote mounted one to a bobbin replacing one.

rgh0 wrote:

SJ Lambert wrote:How much torque do the best camshafts produce days?

I'm planning on using a TILTON clutch with a 200 ft/lb capacity, I reckon that in an open wheeler, that it will be fine. I don't want to use a heavier clutch because besides being "heavier" I'd have to move the slave cylinder from a remote mounted one to a bobbin replacing one.

I think 200 ft/lb sounds plenty. You will be struggling to get 140 ft/lbs out of a 1600 twin cam

rgh0 wrote:...................

I recently did some back to back tests on 2 otherwise identical race engines one running 45DCOE's with 38 mm chokes and one running 36mm chokes and had no difference in maximum power output. I would only consider going to 38mm if you have a very light car (seven or open wheeler) as the risk of low speed response loss possibly balances any potential for top end gain.

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Rohan