HP Calculator

[bobdryerr]

Peak Intake Flow Rate/Peak Horsepower Calculator

dont know how true this is but if someone knows there dyno sheet an can punch in there numbers to see how true it really is this would be a really nice sticky

 

[Awk08]

how would one know what to enter in the efficiency and rpm box's

 

[bobdryerr]

stock ur bike will b 90 - 95 % efficent slightly moded there like 95 % efficinte an then heavly moded is 95 - 100 % effcinte n rpms for the shee i put in around 9000 rpms

 

[1bad442]

my motor will be a lil bit higher rpm than what a blaster usually sees and heres what it came up with for mine

Peak Horsepower 55 crank hp

 

[bobdryerr]

ok i did a lil trial an error on that calc an for me to c what a stock banshee is i had to use 52% an 9000 rpms

 

[blasterracer817]

i got 38 which is close to what the fire breathers make.

 

[1bad442]

ok i did a lil trial an error on that calc an for me to c what a stock banshee is i had to use 52% an 9000 rpms

to get stock blaster hpwr u need to be around 50 percent at 8500

 

[Awk08]

i'd say my porrting, airbox, pro design intake, vf3's and f7 pipe put me in the 90+ range then, and i put 8000rpm, came up with 34hp ????

 

[sheeblast]

using 350, 75% and 9500rpm, i got 59hp. that is close to similar builds like mine.

 

[bobdryerr]

so sheeblast its way off then right lol

 

[sheeblast]

that thing is a joke.

 

[sheeblast]

i know that the efficency of an engine is related to the compression ratio.
iirc, it is 14:1 that is 100% efficent. but at the ratio, your engine doesn't last long.

 

[darederek]

does stock blaster have 17 crank hp or 17 wheel hp

 

[darederek]

oh and a blaster with 5psi of boost should make around 50hp at 8k

 

[79 bronco]

LOL

I did a CT240!!!!! Its 232cc, at 90%, and the Peak Power Engine Speed on the CT dyno is about 8500rpm and i got a Peak Intake Flow Rate of 63 cfm, 30 litres/sec and 42 crank hp...lol and with a 3mm stroker i got 44 crank hp and with a 4mm stroker i got 45 crank hp and with a 4mm and a port job to get 9500rpms Peak Power Engine Speed i got 50 crank hp....lol this was fun.....

 

[79 bronco]

does stock blaster have 17 crank hp or 17 wheel hp

A stock blaster has about 17 wheel hp at about 7000rpm..I:I

 

[darederek]

so these people going down to like 50% efficiency dont need to go down that far. wonder what crank hp on a blaster is?

 

[blasterboy20xx]

I got 21hp so thats about rite ..

 

[motoman9911]

My LT makes peak power around 8400rpm. I had to go down to 75% Volumetric Efficiency to get around what the crank hp should be. It says 74 crank hp.

 

[super noober]

ummm i dunno i just put 218cc's 95% efficiant, and 9000rpms and it came up with 44hp.... no way lol

edit dropped the rpm's to 7500 and still got 37 hp hahahaha