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o-lad

serious WR mods

14 posts in this topic

i am in just purely curious as to what power i can expect from a fairly heavily moddded 2008 wr450f as i am interested in purchasing one for supermoto.

so i guess what real life hp numbers can i expect from things like a hc piston cams and a little head work and an exhaust?

anyone know the actual figures hp wise of a stock unrestricted wr450f??

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i am in just purely curious as to what power i can expect from a fairly heavily moddded 2008 wr450f as i am interested in purchasing one for supermoto.

so i guess what real life hp numbers can i expect from things like a hc piston cams and a little head work and an exhaust?

anyone know the actual figures hp wise of a stock unrestricted wr450f??

upper 50's

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Stockish unrestricted is around 40hp I believe.

Dirt bike just modded one with exhaust cam and head work by LA Sleeve and I think a HC piston and they were at 50ish hp I believe.

I THINK that if the motor was really built with all the tricks like overbore, head and valve work, both cams, proper jetting, open exhaust etc... one could get 60ish hp.

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I seem to recall stockish is about 50Hp. Do a search, I am sure there are a feew dyno graphs about and the bike specs for the runs.

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Stockish unrestricted is around 40hp I believe.

Dirt bike just modded one with exhaust cam and head work by LA Sleeve and I think a HC piston and they were at 50ish hp I believe.

I THINK that if the motor was really built with all the tricks like overbore, head and valve work, both cams, proper jetting, open exhaust etc... one could get 60ish hp.

A DRZ 400 is 39 Hp at the RW.......

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I was thinking upper 50's modded with a cam, hc piston and p.p. ? How about some nitrous? Anybody heard from the thread about the turbo-ed 450?

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The Sept dirt bike has an article claiming a stock YZ450 at 49hp. They say Valli MX team bikes with piston, cams, headwork, vortex ignition and bored carb at 59.9hp.

Our performance machine shop here in BC claims a 4-5hp peak gain on my WR with no loss of bottom or mid with porting.

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The suzuki sure hides it well.

I would have thought about 34.

..hmmm

35 / 287lbs = .12 drz

48 / 265lbs = .18 wr

54 / 240lbs = .23 yzf

57 / 239lbs = .238 cr500af

59 / 219lbs = .269 modified Maico 501

31 / 174lbs = .22 1972 RH72 factory Suzuki (yes, 174 lbs)

42 / 189lbs = .22 1972 RN72

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..hmmm

35 / 287lbs = .12 drz

48 / 265lbs = .18 wr

54 / 240lbs = .23 yzf

57 / 239lbs = .238 cr500af

59 / 219lbs = .269 modified Maico 501

31 / 174lbs = .22 1972 RH72 factory Suzuki (yes, 174 lbs)

42 / 189lbs = .22 1972 RN72

Awesome ratio for the yzf! Glad I have one.:ride:

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..hmmm

35 / 287lbs = .12 drz

48 / 265lbs = .18 wr

54 / 240lbs = .23 yzf

57 / 239lbs = .238 cr500af

59 / 219lbs = .269 modified Maico 501

31 / 174lbs = .22 1972 RH72 factory Suzuki (yes, 174 lbs)

42 / 189lbs = .22 1972 RN72

31/174 = 0.178.

You know someone was going to check:smirk:

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