What are ports?

[savage24x]

I have a Hyper .21 and want to figure out if it's 3 or 4 port. No difference in crankcase or head from the pictures. Needs new sleeve and piston, might just throw a 4 port in there and see what happens.

What is a port and how does it affect performance or efficiency?

 

[savage24x]

Gonna bump.

 

[Reddog]

The ports are basicly the passages that the intake fuel/air mix and the exhaust go through to enter and exit the cylinder. If you use the wrong cylinder sleeve then it will not work right.

 

[Nitro4910]

Intake & exhaust ports in the engines sleeve.

 

[Alexander_0_1]

The ports work in conjunction with the machined grooves/tunnels of the engine block. You have matching grooves for every port in the sleeve.

I agree that if you use a sleeve that doesn't match the block, your gonna have a heck of a time making it work for you, if it starts.

 

[mrbones]

I have a Hyper .21 and want to figure out if it's 3 or 4 port. No difference in crankcase or head from the pictures. Needs new sleeve and piston, might just throw a 4 port in there and see what happens.

What is a port and how does it affect performance or efficiency?

Found something for you to read about ports. Here's a link.

http://www.beatyourtruck.com/forum/showthread.php?31248-Understanding-nitro-engine-ports