Pocket Bike Forum - Mini Bikes - View Single Post - Cag port timing
Thread: Cag port timing
View Single Post
post #8 of (permalink) Old 03-19-2019
CAM2
BUILDEM,WRECKEM,REBUILDEM
 
CAM2's Avatar
 
Join Date: Mar 2008
Posts: 20,789
Re: Cag port timing

Quote:
Originally Posted by edek91 View Post
So if my working out is correct

Exhaust duration is 160

Transfer duration is 110

Boost port duration is 120


I have got .65 squish so I'll matching .15 off top of the cylinder to get the .5 squish
0.5mm is roughly 20 thousandths of an inch..That would be a compression ratio of about 17:1.Better get a welding glove to pullstart it if you go that route

At .050" squish youll get about 140-150psi......I run my squish mainly at .030"...Ive run them as tight as .024" and got piston to dome interference and had to modify the pistontop on a mini lathe to true the top up..




Cut
Up
Stuff
To
Obtain
Masterpiece

Last edited by CAM2; 03-19-2019 at 03:53 PM.
CAM2 is offline  
 
 
For the best viewing experience please update your browser to Google Chrome