PDA

View Full Version : 397cc = what amount of HP on the 400


Lowcountrydave
08-30-2006, 01:09 PM
Usually with a car you get both the cc's and HP. Are there any charts/graphs that convert them to HP. Just wondering what my stock 400 is pushing. How many cc's in a HP?



Thanks Dave:confused:
400exmkt
08-30-2006, 01:21 PM
From what i here stock is around 27-28 maybe closer to 30
400exrider707
08-30-2006, 01:41 PM
Originally posted by 400exmkt
From what i here stock is around 27-28 maybe closer to 30

more like 25-26. Usually with a pipe/filter and jetting its closer to 27-28 and this is at the wheels.
GPracer2500
08-30-2006, 01:49 PM
Originally posted by Lowcountrydave
....How many cc's in a HP?....

You can't make a direct correlation between HP and displacement alone. Displacement is only one of many characteristics that makes an engine what it is (and determines how much power it produces).
krt400ex
08-30-2006, 04:43 PM
Originally posted by 400exrider707
more like 25-26. Usually with a pipe/filter and jetting its closer to 27-28 and this is at the wheels.


ya, about 26
Lowcountrydave
08-30-2006, 06:28 PM
Thanks for the replys. I know one thing it sure moves my @rse down the track and trials well.

Dave :D
downeyballz
08-30-2006, 06:34 PM
yeah theres no real way to tell the hp by cc. compression, head design, cam, rpm, timing, have alot more to do with horsepower. for example chevy 5.7l motors out of the 80's made like 150hp, wile turbocharged 1.5l F1 motors made over 1000hp.
TRXNIGHTRIDER
08-31-2006, 07:04 PM
stock is about 27hp on all the dynos ive seen comparing stock and aftermarket
Lowcountrydave
08-31-2006, 07:26 PM
Kinda impressive such a small amount of HP, could move a 400lb machine and a 250lb rider.


Dave
krt400ex
09-01-2006, 07:35 AM
Originally posted by Lowcountrydave
Kinda impressive such a small amount of HP, could move a 400lb machine and a 250lb rider.


Dave



ya, and they move along pretty good too
pual0101
09-01-2006, 07:40 AM
1 hp = 33,000 ft·pound-force|·min−1 = exactly 0.74569987158227022 kW

it doesn't take much hp to move ya round, maybe 2or3hp, but to move round n' accelerate at that speed is where the other 20+ or so come in to play hehe
Lowcountrydave
09-01-2006, 08:33 AM
Thats interesting to know. I never thought about it but years ago I was riding a go-kart. It only had a 5HP engine on it.


Thanks for the info
Dave