Ace, since bullets make make most of their power at relatively low rpm's, has there ever been any work done in the "short rod engine" area? I know years ago it worked well with the harley flat trackers. The penalty is high piston side loading and shorter engine life, but if its a race engine or if you are going for a record, who cares? thanks cy.
Tom:Have you seen any kind of damage in the rocker assembly of REs and if so what was it ? What caused it ? Can engine kick-back crack or damage or loosen any part of rocker assembly ?
Here is another one:.....And I am only asking you to guesstimate (since your guestimate is much more informed than mine) : If the flowed, ported UCE head with the performance valve job was to be bolted back (without high lift rockers) on to the stock cylinder&piston, do you think the stock ECU would be able to keep up......If not, how much performance gain would you guestimate if this was mated with a remapped piggy back ECU that you are developing?
Here's another: Have you had an oportunity to look at the rare, almost mystical, twin exhaust port head. As rare as it is, would it provide with more performance options. This one: http://www.royalenfields.com/2009/04/for-sale-very-rare-royal-enfield-twin.html#comment-form
Tom - I have questions about porting my intake manifold for my twin. Basically I have a Y-manifold that is about 3" long. I'm not exactly looking to go Gung Ho, but I would like to be able to create a better fuel charge. As we all know these bikes aren't power houses, so every little bit counts. Last night I did a light porting job and nice polish. After doing so I discovered this was actually not the correct thing to do. So I did some research, basically freshened up and my P&P education. So, a perfectly polished finish like I did is actually good for forced induction, but as you previously said, a hindrance for N/A motors or anything that isn't direct fuel injection. I'm not going to touch the heads, but I would like to at least gasket match the runners into the heads. Also I noticed that the carb flange on the manifold is actually oval shaped and was thinking about opening up the lower and upper portions of the flange to make the mating surface to the crab more true and less restrictive. Then I'm thinking of going back and resanding everything with 320 grit paper and attempt to sand the runners in a spiral direction to try and achieve a bit of a swirl effect.What are your thoughts Tom?Scottie