Need specs for pipe design

[CoastalCruiser]

Does anybody know the exhaust timing in degrees for a Grubee GT5 and the max RPMs of said motor? I've found an excellent treatise on 2 stroke performance.

 

[CoastalCruiser]

bump,,,,,,,,bumpity bump bump

 

[wildemere]

Duraton is around 155 degrees

Use a number you like between 6 & 7,000 as the Max RPM

 

[flybytaco]

153 degrees

 

[CoastalCruiser]

Thanks alot guys! Now me and AGB can sit down and talk.

 

[flybytaco]

i have all the specs but i will not publish them publicly lol if u need any other #'s pm me

 

[foureasy]

get it up around 178

 

[flybytaco]

i dont think hes trying to port it four he was just looking for stock numbers i think