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View Full Version : Horsepower...I know its a lame ?


stylenb
02-04-2009, 09:20 AM
So I am just curious, for those who have had this simialar setup, and ideas on HP. I know there are a ton of factors, but just looking for a ballpark.

Pro-x 330, 250lbs compression, sparks mid range port, Cr250 igintion, 38mm airstryker, ESR type 5, no air box lid....
jcs003
02-04-2009, 09:28 AM
i think you are very close to my location. ???

i have a 250R stroked to 265, and some mid-range porting. i am estimated at 37-45hp. there are calculations to better assist you.
Honda 250r 001
02-04-2009, 09:48 AM
58.951 is my guess. hahaha
2-330s
02-04-2009, 10:02 AM
55 rw-67 crank
jcs003
02-04-2009, 12:51 PM
Originally posted by Honda 250r 001
58.951 is my guess. hahaha

lol
jcs003
02-04-2009, 12:54 PM
Originally posted by jcs003
lol

37+45=82/2=41
dunatic
02-04-2009, 01:37 PM
mid to high 40's. Drop that compression down to around 200 and it would perform so much better for ya.
Honda 250r 001
02-04-2009, 01:42 PM
Originally posted by dunatic
mid to high 40's. Drop that compression down to around 200 and it would perform so much better for ya.

actually i agree with ya on that. i honestly dont like the feel of that high of comp motor. 210 is perfect for race fuel and 180 is perf for pump.
machwon
02-04-2009, 06:36 PM
After it was dialed in on a dyno, I would peg it around 33 tq and 54 hp on race gas. Dyno's can be very humbling and the best way to find out is to find a dyno to run on. You are right in that there are many many variables. I had a pv350 on time only make 37 hp on the first pass. Jetting changes made 12 hp, upto 49 before it left, but the lame mx port really ruined the cylinder in my opinion.
stylenb
02-28-2009, 02:28 PM
Thnks for the feedback, I kinda guessed around 50. Thats if it was 76.45 degrees, partly sunny, low humidity and 7.5 days away from an solar eclipse. :)

Not that it matters to me, seat of the pants....bike rips...thats all there is to it :)

I def wanna lower the compression, buying new head with changeable domes real soon!!!
imprezkid
02-28-2009, 02:32 PM
yeah im guessing somewhere around there maybe a little more, before mine broke on the dyno it was about half throttle and made 37hp. almost identical setup besides the ignition