Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

horse power = how many cc's ??????

2944daniels's Avatar

Join Date: Mar 2008
Posts: 16

07-22-08, 03:46 PM   #1  
horse power = how many cc's ??????

hello. what is the formula for converting hp to cc,s ? for example i want to figure out what is the horse power on a 70 cc engine. thanks

Sponsored Links
Pilot Dane's Avatar
Group Moderator

Join Date: Mar 2003
Posts: 16,683

07-22-08, 04:35 PM   #2  
If only it were that simple. Displacement is only one factor that affects the amount of power an engine produces. Your engine can make different amounts of power depending on; fuel, carburation, rpm, ignition timing, cam profile, valve size, exhaust design, smoothness of the intake and exhaust passages, weather...

the_tow_guy's Avatar
Group Moderator

Join Date: Feb 2001
Posts: 11,475

07-22-08, 04:48 PM   #3  
For instance, the 3.5L Honda Indy car engines put out roughly 750HP, about three times the HP of the same size engine in a Honda Accord.

Measure it with a micrometer; cut it with an ax.

rogerflies's Avatar

Join Date: Jun 2008
Posts: 150

07-23-08, 03:26 PM   #4  
And a LOT depends on how long you want it to reliably produce that amount of power.

Search this Thread