Kendall just got his new Gx 5 ports yesterday, awesome looking motor. Pinch appears to be less, we'll find out this weekend I plan on breaking them in.

Rex

Man i cant wait to get mine

Motor tuning
 

Hi guys I got a 5 port in a eight t, I am not sure, but I thi k I got a lean bottom end. The temps are 200* please tell me about a lean bottom end.

Depends if you have long or short low speed needle fitted, as they differ in tuning method a little.
If you have the long needle and you are getting lean bog and high temps, it's a sure bet you have leaned the HSN too much, and this is causing the lean bog.
Have a look down the throat of the carb when you have the slide at full throttle. If the needle has a thickish rounded end and is out of the spray bar completely, you have a short needle. If the needle is a long tapered one and the tip is still sitting in the spray bar at full throttle, you have a long needle.
Let us know which one you have and then we can give you the appropriate advice - hopefully !! :D

Yeah, the new GX motors look the part eh Rex. You will find break-in a breeze.
It will be loosening up and feeling like it's ready to get up and go at around the 10 tank mark.
From what we have seen with the first batch we got here, performance is up a little on the Pro Series motors. The 5 Port in truggy is a killer combo as usual. The GX and MG66 motors like the 2072 pipe a lot, so if you got 2072 pipes with the motors, give them a go for sure.

i have been testing the the the OS speed 2060 pipe on my mg66 and moded 7 port , i like it alot ..... i will know after our next race meet when i will be racing against others , my 2072 for some reason the spring has pulled through which im not to chuffed about i will be repairing it for sure :D

i sent ya a pm trey

There was a batch os pipes that had slightly too soft material + the original springs were a tad too short. I repaired mine by drilling new holes and installed longer Hobbytech springs and it's been all golden since

making an engine change Allan?

who dat?

i've seen some guys having problems with the thicker rb gaskets with the os = too tight and the springs end up pulling harder because the pipe is trying to move away from the motor.

brian i race at leisure hours

not sure who you is, but im the worst with names.lol

no problem, i race with Patrick the mugen guy with the green and orange fastlane wraps, i use to race mugen till i won that losi 2.0 buggy last year at the horizon race

sharp point