Originally posted by desert_450r@Aug 10 2004, 01:00 AM
Can you explain what you mean by this? --- Maybe the Mai Tais are clouding me noodle right now :wacko: :wacko:
[/b][/quote]13:1 could use a more agressive cam to help bleed cylinder pressure.
I have almost the same set up as you, except I have the 13.8:1 JE. I gained a lot of bottom end and didn't lose any top end. I have a 182 main, 14/39 gearing, and 113 octane VP Late Model +. Awesome increases all around. What race gas are you using? Depending on your elevation, you may be too rich.Originally posted by 04450r@Aug 11 2004, 10:17 AM
I think I created some confusion here. I have a sparks pipe, sparks air filter, no air box lid, 190 main jet, HRC cam, 13.1 pistion, and the head has been ported. To me the bike doesn't perform the way it should. I thought that by adding the piston I would get back the bottom end I lost with the HRC cam and still have top end, but the bike seems worse all the way around. I am running a 13f and 36 rear. Thanks
I had the 13/38 w/ just the HRC kit. Now, w/ the 13.8:1 I went to the 14/39 because it added so much on the bottom that I could go back to the stock front tooth. I guess it all depends on the terrain you ride in as to what works best for you. When we go to Little Sahara, OK in October, I'm going to try the 13/38 again because of the drag of the sand.Originally posted by 04450r@Aug 11 2004, 04:36 PM
29FTEX, what set up are you running? Does the 14f 39r seem to be a good all around gear for you? Is there a big difference between the 13.8 and 13.1 pistons? These are probably stupid questions to you but just curious
i was doing a piston search and found this............is it me or does this not sound right..........actually most of this thread sounds WRONGOriginally posted by Black450R@Aug 9 2004, 09:17 PM
I am sure it would be hard on the bottom end, make a lot of heat, require race fuel. I would not do this on a recreational bike. Also the HRC cam is designed for stock compression. 13:1 could use a more agressive cam to help bleed cylinder pressure.