do they sound like a nova with bad bearings?...cause thats what mine sounds like!

If you have any doubt about the rear bearing go ahead and change it. Better safe than sorry. I will say that the GO bearings are some of the best ive seen but nothing is perfect.

you know what?....i think this high pitch noise i am hearing is just the tight pinch!....this thing is tight like a dolphins anus! LOL...maybe thats what im hearing!....

I bought a GX-5R to run in my SC8. Wondering what head shim setup to use running Byron's 20%.

G0 3 port. How would it do in a buggy? Too much bottom end? Lmk what you guys think. Thanks

If you are hearing like a pinging noise and it's still tight the motor is not hot enough.

Rex

yeah my temp gun battery just went out so i only ran 1 tank just to make sure the motor was legit!...it still has tons of pinch!...if i dont heat it up before i run it,the piston gets stuck @ tdc!

i think i would be great in buggy! i have a new in box 3 port if your interested

Get racer22 to mod your 3 port,hook a dynamite 086 pipe to it and hang on. even with out the mod the engine is very nice. Great performence and super run time.

i have 3 of them, one in truggy, one broke in ready to go and one new in box, the new in box one is the older one, the 21r with blue head

I love the 3 port in my truggy, i use a 7 port in my buggy. Great engines.

quick question here guys..

I have an old 5 port case(silver head series) anyway I was wondering will the gx series crank,p/s/r fit in it...

lmk

thanks,
Jayson

Yes , the GX c/p/r/s will fit. But it may be worth the few extra $$ to get a new GX5 port

y do you say that? is there something new with the engine case design?

just wondering...thanks,
Jayson

i have the gx 5port and the case got cracked from hard landing so it was all put into the case you are talking about and it runs great!