At the races I was dynoed at 56 hp. My mods then were the following:

1) 11.5:1 Piston on 1/2 Prem / 1/2 race gas
2) Lift .425 in. duration 260 degrees (Intake & exhaust).
3) Ported Head

What do you think my horsepower will be if I get these...

1) RWR Head with Large Valves
2) Reported for the large valves
3) 14:1 Piston
4) Twin 39 carbs
5) 110 Race Gas

 

Enough to make the competition stand up and take notice[img]i/expressions/face-icon-small-happy.gif[/img][img]i/expressions/face-icon-small-cool.gif[/img].

 

I look forward to you finding out! especially with all the new talk of decreasing port size to increase velocity for higher hp #'s.
I hope you hit 65 Mark!

 

You will probably get around 62 h.p. Marky.

 

Now, I just don't know what to do with my old 11.5:1 piston - I know ... EBAY!

 

49-50 hp you've described mine and km's bikes too the "T" the freaky thing is mine is on nitro.but thats what we pulled on kenz dyno [img]i/expressions/face-icon-small-blush.gif[/img] but if it makes you feel better they hang with or beat raptors with considerably more hp????

1.woods head finish porting
2.13.5-1 piston
3.425/260 cams
4.large valves
5.dual carbs
6.vortex cdi
7.16-43 gearing
8.22" tires
9.nitro 20% mix
10.=49 HP

 

Hmmmm. Well I am 56 HP now.

 

were you on the frist night or the second??

 

What was the difference?

 

It was the same night that Scooby was dynoed.