how much power?
Posted June 08, 2002 - 02:14 PM
Posted June 08, 2002 - 03:51 PM
426's rip it up but I dont know how many HP they put out....
congrates on your new moto!!
Posted June 10, 2002 - 06:22 PM
[ June 10, 2002: Message edited by: blue beast wins ]
Posted June 15, 2002 - 08:17 AM
Posted June 16, 2002 - 02:11 AM
So the moral of the tale is to never read too much into the manufacturer's claimed HP outputs.
Posted June 16, 2002 - 02:48 AM
Posted November 16, 2014 - 07:25 AM
Are there any places I can find dyno sheets on 2002 YZ 426f with a Stage 1 kit..I race a Micro Midget race car with this engine and am trying to match the gearing to the engine. I use Micron 4 plus a data recorder which helps tremendously to 'find' the thing...any help on max torque\rpm is what I am looking for along with HP curves...Also am parting out a 2002 bike that the engine came with...
Posted November 18, 2014 - 10:26 AM
Actual facts are, just for starters, that the current crop of 250 two-stroke MX bikes averages about 43-47 hp, while 250F's are pushing 37-41. None of them are anywhere near 60. The '15 YZ450F is in the stratosphere by itself at 57-59, depending on the dyno, the day, etc. Most MX450's are right at 50 (49-52). Late model WR450's (pre-EFI) came in at around 37. This is rear wheel measured, not imaginary "at the crank" stuff.
The YZ426 typically posted numbers in the 46-47 hp range. Figure the WR426 to be 6-8 hp less than that.
Posted November 19, 2014 - 07:05 PM
Here's a thread about WR HP/ Dyno results.
The 2013 derestricted and tuned WR pulls hard and long. I have not one complaint about the motor. Whatever it would do on a dyno for RWHP I don't know for sure. It's running strong at over 125 hours and has been reliable as an anvil.
Sorry I'm of topic a little
Edited by cubera, November 19, 2014 - 07:08 PM.