Guess it depends on the dyno. The dyno I have been using seems pretty close if you account for drive train loss of 15%. Given 63 crank HP no way you are.going to make more than mid 50's at the wheel.My antique DR should make just over 50 at the tire. That thing is gonna make considerably more.
Really? I just would have assumed they would make alot more than my old SOHC DR that is ABSOLUTELY a longevity built motor. lolGuess it depends on the dyno. The dyno I have been using seems pretty close if you account for drive train loss of 15%. Given 63 crank HP no way you are.going to make more than mid 50's at the wheel.
A fully done up & bling'd out race 450 doesn't make much more than that. LC4 is a motor tuned and built.for high mileage and longevity.
An internally stock LC4 will never make over 60 at the wheel IMO
you can get the 690 lc4 engine to 70 hp without touching the engine.... its been provenAn internally stock LC4 will never make over 60 at the wheel IMO
i had mine dyno'd at 56hp with just the sc-project with baffle in... and the airbox lid off... im going through all my papers trying to find it so i can show you guys...to put it in perspective, on the same day and same dyno after I put down 55 rwhp with the 690, my brothers mildly uncorked DRZ400SM (screen removed from exhaust, and airbox opened a little bit) made 35 rwhp.
I just don't see how you could get 15%-20% increase in power with an air filter and open exhaust on these motors. KTM claims the 690 LC4 put out 63 hp. So to get near that number at the rear you need to increase power to overcome drive train losses by at least 15%. That kind of power is usually made with internal engine mods (pistons, cams, port work, etc..) Also, what gearing changes & what trans gear were these alleged 60 rwhp bike in?
All on the same dyno, in 4th gear with stock SMC gearing, I went from 51 (open airbox, open FMF exhaust, and akra map) to 55 (close to perfect dialed in fueling with the vortex ECU).
So with nearly spot on fueling I gained 4 hp but still no where near 60 hp at the wheel. I just can't see there being that kind of discrepancy bike to bike where some would be nearly 9% more powerful with no changes.
Please share how its been done
Looking forward to seeing some data myself!
l was pretty stoked about the numbers that were mentioned by the previous owner... however there are guys over at Thumpertalk who are singing the praises of their near 60hp DRZs. Made me wonder if l would have been better off throwing in a stroker crank etc. into my old Dizzer.
Anyway.. that isn't the argument as l know the SMC has better suspension, brakes, clutch... and COLOUR (^_-)