My 1911 has got a Eurorace II cam in it at the moment, which gives good power but a torque curve as steep as a Swiss mountainside. I'm looking to get something more sensible, as my longer ratio gearbox means there's a bigger gap to bridge between 3rd and 4th and it's not that easy as it stands when going up hill. What are the options to look at?
I asked the same question of the rolling road guy and showed him the previous dyno plot. I asked him what options are available in terms of carb setup including vent sizes. He said that with the torque curve being so steep, the cam is likely to be a big limiter in terms of low end torque and so trying to set up around the same cam wouldn't make a huge change to the driving characteristics. I don't want to spend money and time trying to make something work if it's unlikely to succeed.
Eurorace II what? should have a letter after. I'd guess E which is 280 x 430" and similar to the cam in mine which had bags of torque with ICT (28mm vent) carbs.
I think it's H, but @Paul Weeding will be able to confirm. H is 286 x 485", so more lift and a bit more duration. The Webb 494 mentioned by @masterjedi is 280 x 465". Does 6 degrees of duration really make such a difference?
They are the letters @zed They do an I and an II, it's not Roman numerals 281° & .475 of lift, so essentially the same as the 494... We'll need to shorten the duration, which will drop the torque band down the rev range.... We could drop in a C that would give 270° & .425 of lift, it should give you loads of bottom end torque... changing the box has made a big difference to how the engine performs on the road!!
