21-01-2020, 09:34 AM
(This post was last modified: 21-01-2020, 09:35 AM by Ian Williams.)
Quote "One Seven owner I know dyno tested a modified late ruby against a Ricardo and saw a 3 BHP improvement with the alloy one."
Yes but this is not comparing apples for apples is it, the Ricardo has a very different combustion chamber so one would expect different results from a Ruby head. This is the case with almost every Alloy head there has been, although some are good some are bad, as I said the really interesting comparison would be between and Iron and Alloy of identical design. The only ones I have come across which are exactly the same are the pattern 9E sports items, I actually have Iron and Alloy versions of these and there were a few cast in the 80's from bronze. I have never bothered to dyno the two on the same engine, but I have also never noticed a really discernible difference in the performance of either, and even if i did it would probably be subjective.
Yes but this is not comparing apples for apples is it, the Ricardo has a very different combustion chamber so one would expect different results from a Ruby head. This is the case with almost every Alloy head there has been, although some are good some are bad, as I said the really interesting comparison would be between and Iron and Alloy of identical design. The only ones I have come across which are exactly the same are the pattern 9E sports items, I actually have Iron and Alloy versions of these and there were a few cast in the 80's from bronze. I have never bothered to dyno the two on the same engine, but I have also never noticed a really discernible difference in the performance of either, and even if i did it would probably be subjective.
Black Art Enthusiast