anyone have any extra head bolts for the GX series? i was tightening one and the hex slipped and rounded one off a tad, just want to be safe and replace before it gets to bad and cant get it out. i could use 4 to 6 of them. i could send a few bucks!

Guess who has 'em....................
pm or email me


Moto

pm sent

We need to get Speed demin onto our proprietary PURE Race Fuel. You can strip a motor after several gallons on this and the insides are like new. Just a nice clear oily glaze over everything. We have converted a lot of racers to this fuel from "name" brands, and they love the crisp performance and clean running. Just thougt I would get a plug in for the local NZ racers on here

Think you can help him out? Maybe a quart (liter?) or something. Maybe make a video of it spewing out deposit mud when the PURE fuel cleans it out! haha

i wont name my fuel i use but i will say i have just switched to 30% pink colored fuel yeh i think i will have to try out some of grizz1 pure race fuel i wondered why the inside of the block was a pinkish color the p/s and crank dont look to bad but im no expert this is only my second season racing so have a lot to learn

Here are some photos of my internals and my filter




-Grizz1, thanks for all ya help man been great and cant wait till i can get a GO GX11-5R am looking forward to feeling the power the GX-5R has been great had a hole season of racing out of it without any problems at all apart from my error!

-Flanno, yah mate love my truggys a, would love to get over there but hard enough to get to races over here one day i hope

Cheers Runne next time i see Grizz1 i might just have to purchase a litre of fuel to see what it is like, the top of piston has quite a lot of build up on it but i think its best to leave it there and hopefully it will burn of.

This might be clearer to see

Those are some pretty bad deposits. Glad to hear you are changing fuel. I would clean off those pieces with some denatured alcohol and a soft towel before putting them back together.

Wow, yeah that is pretty mucked up! Just a heads up, but you're prob going to need to change the tune once or twice as the new fuel cleans out the deposits. Also, have grizz1 check the play in your conrod... might be time to swap it out.

seems every other engine i rebuild for people look like yours,its usually byrons that does that.

A lot of our team guys run byrons with great success, and dont get that kind of deposits... but this isnt a fuel thread.

Anyways, this is my prototype GXII after 3 gallons. For the record, this is using VP powermaster 30%. I've literally abused this thing post break-in. This motor has been run fat, VERY lean (both on accident due to a pressure line split, and on purpose). I've run it anywhere between 160 and 290 degrees fahrenheit. I believe I had it over 300 on one occasion, but didnt temp it until it had a few mins to cool.

Anyways, the proof is in the pudding:







(white balance is a little off, but you get the idea)




(overexposure to show detail inside the sleeve)










UNCOATED prototype crank. Production has black coated counterweight.


New, HARDER piston


NO play in conrod after 3 gallons

sweet trey!...looks good

thanks. BTW I was too lazy to pull the crank out. FWIW, I'm trying to see how long the GO clutch shoes last. So far 2 gallons.

very impressive Trey. Your just teasing the crap out of us aren't you!