View single post by Harkes
 Posted: 10-04-2005 09:17 am
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Harkes



Joined: 03-17-2005
Location: Warmond, Netherlands
Posts: 216
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 Judson, i have some info on the cams for you. Let me tell you first that my aim for the engine (i took Garry's advice) is a fat torque curve throughout the whole rpm range and not so much top end speed (peak power). So initially we were thinking 104 In and 107 Ex

But Garry wouldn't be Garry if he didn't have an even better solution:

To protect low-end torque Garry used 107 cam for Exhaust; 252° and .378" lift and for great performance and peak power his own version of the 104.

The lotus 104 is: 272° and .410" lift. Garry's own 104 is: 268° and .425" lift.

Together with the JE 11:1 pistons and x-drilled lotus 2.2L crank and 45E dellortos with 38 venturis, Garry managed as he already knew and expected the engine to have a very torquey low end (135 lb ft @ 2500 rpm) and a very torquey high end (178 lb ft @ 5000 rpm).

So we concluded that our goal of having a fat torque curve throughout the whole rpm band has been achieved whilst still having 210 BHP at 6250 rpm and 210 BHP at 6750 rpm (curve is practically flat)

I'm now waiting for aluminium fuel tank to arrive and some other stuff (new 3 core radiator, electronic state SU fuel pump) and the engine is coming over very soon, so i'll have lots to do. (i'm waiting for the dyno sheets to be faxed)

talk to you soon

erik