I use this
With these
Everytime i ride. Under 50 bucks total. My friends think it's funny they see me bobbing my head while ripping. They just don't understand how i can listen to country while riding.
Chuck Palmucci
@Storbeck
You would want to be around 7.5:1 dynamic compression. To achieve that with your bore size and port timing you'd want your trapped head volume to be 33.5cc. That's assuming your engine is stock stroke. One helpful hint is if your modifying stock head start with a 701 head not 64x...
62t cylinder will work great. Dont raise the top of the exhaust port any. Just follow the template to widen the exhaust. Honestly most 62t cylinder the transfer ports match fairly well so dont go crazy there either. You can cause more harm then good if you get the transfer port exit angles off...
There's a free boat ramp on the west side of the Halifax river in holly hill. It's less then 10 minutes from the event ride zone and has next to no slow speed zone. Great test and tune place if your looking for a closer spot to the ride
Got a min to reread all your numbers. 2 questions.
Does your dome cc measurement include the spark plug hole volume? Spark plug hole volume is 1.5cc but i only subract 1cc for calculation because 1/3 of the volume stays open even after the plug is installed.
You give 37mm as your measurement...
@Zero Client
If you read the text at the bottom of that calculator again it talks about using the intake valve closing to get dynamic compression of a 4 stroke. Not a 2 stroke. You use the closing of the exhaust port for dynamic or trapped compression ratio on a 2 stroke. I can't stress how...
Warning hopefully this doesn't get to long.
The link to the compression calculator above is static compression ratio not dynamic. It doesn't does not factor the exhaust port height.
http://www.torqsoft.net/compression-ratio.html
This online calculator is what you need to live by. Keep in...
Scott
Give me a ring on the phone. You still got my number? I'm pretty sure I didn't deck the cylinder when it was here. Send it over and ill take a cut on the deck surface to make sure its true. Just pay the return shipping
Thanks
Chuck Palmucci
CPT Enterprise LLC
609 510 3062
Reeds are likely candidate but before I did anything I'd throw a compression gauge on it. I know you don't wanna hear that but it's an easy check and a weak cylinder could be the issue.
If not reeds or weak cylinder its plausible to have a crank or drive line bearing tightening up.
Good luck...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.