Originally Posted by fuse01

just ran the mg66rr hand prep and breakin by massive mod on my mbx6t with asend clutch... 1 word.. sWEET!!! More top end then the go.25 and bottom end is a blast! Felt like my go .25 engine. Best money ever paid so far.... Thank u all for such a excellent engine. I bet it flys on a buggy! I could chase a xray 808 on nova toro anytime. Rreally good stuff and i'm impressed.

Originally Posted by MMor101

I purchased a non GX 3 port race last season and I have been having troubles with the low end since. When the motor heats up, the bottom end gets real soft almost like a broken clutch spring. I've replaced the whole clutch setup, sealed the whole motor, and even put in new carb orings! Today I borrowed a friends Nova carb and the bottom end got much better but still get soft at the end of the tank on the track. I KNOW the engine is tuned correctly. I even had Ed Bridges from EB Mods tune the motor and it still eventually got soft on the bottom. I've checked tank pressure and replaced all the lines. What's the deal? This is a pretty discouraging first time experience with GO Engines.

Originally Posted by grizz1

Cool. That pipe hasn't become available here yet to my knowledge. Sounds good. I might have to try one on my GO's . I am told it has a shorter header, which would account for the increased top end. What is the bottom end like compared to the 2072 ?

Originally Posted by MassiveMods

Howdy all after receiving a bazillion emails we have worked out that the MM site has crashed the band width of our server ! we got just under half a million hits this month so please be patient as we get it up again ! WOO HOO !

M

Originally Posted by RyanLopez

Hey guys,

Does any know what the rear bearing size for the GX-5R?

Originally Posted by Dlewis4

I post up an engine seriel number can you tell me what it is?

Originally Posted by Dlewis4

Lol ok. It's odd has a 21 black block and a red 25 head. That's how I got it