I know this sounds like a dumbe question, but what does a 90cc engine equate to in HP or for that matter any cc to hp?

Thanks in advance.
Ben

 

CC's have very little to do with hp but most stock 90's put out 5-8hp or so they advertise. Most companies post crank hp though to boost their numbers. Some of the modded 90's put out over 15hp.

 

You're comparing apples to oranges. CC's (cubic centimeters) is a measurement of volume. there are 16.387 cc's per cubic inch. There are 231 cubic inches to the gallon. HP (horsepower) is a measurement of work potential. 1 hp will lift 550 lbs. 1ft. in 1 sec.. 1hp = 746 watts or 42.44 BTU's per minute. Now to really answer your question, because different engines have varying degrees of efficency, no cc to hp relation can be established. A 5700cc chevy may make 150 hp in stock form. Pump it up a little and the 5700cc will make 300 hp. Build it to nascar specs and it will be 700 or so. My 15cc R/C helicopter engine is about 3hp. A 3 hp briggs & stratton would probably be around 200 +or- cc's. About as close as I can come to answering your question would be a guess. A mild 100 cc 2 stroke makes about 5-8hp.. A moderate 100, about 12-14 hp. A hot 100, 20+++ hp. I hope this helps.

crowfly

 

Wow, that's quite exacting info. Did you ever read the posts on "What increases touque"?
It may be right up your alley!

Welcome, and hope to hear more from you!