Lotus Elan and Lotus Elan Plus 2 Forums

Engine back from Dino yesterday , 146 bhp @ 6800 the graph rpm is not printed correctly

Dam that predictive text

Looking good Shaun.
Anouther stage completed on your restoration.

Can you remind us what the specs of the engine are-cams, capacity etc?

Engine spec
Bore 83:65 x stroke 77
420 cams
1.625 valves
1.400 valves
Race springs
Light weight cam follewers
Combustion chamber head work
Mallory distributor
Je pistons
Forged rods
Crossflow crank
Twin 45 dcoe

Very nice specification and good power but I think I am more impressed with the torque figure!

I?m sure someone else has noticed this, but the torque curve looks curious. Should intersect horsepower at 5252 rpm.

The rpm scale is stated as being off (shifted?). But, regardless the torque curve shown is way too high at 170+. From the hp curve the torque is more like around 120-125. Still decent as this is a stroked engine after all.

I think the torque is measured at Newton metres which as you said is around 125 feet pounds

Thanks for clearing that up. I should have thought about the units.

What is your cam timing?

Glad we cleared that up.

That was a good torque reading for 2 1/2 litres !