What about the old Go 0801 pipe for the new motors? I found one NIB in a drawer in the shop the other day.

I'm running a 0801 in my buggy, only because it fits better in my MBX6 than the 2072, I did notice the tune was WAY different, lost some run time and top end but maybe it's just me not being used to the buggy yet.

Space shouldn't be a prob in the GT2 so I think I'll give the 2072 a go and see what's up.

Speaking of the MBX6, I've been eyeing a new off road buggy with bad intent, and I always loved me some Mugen. last one I had in my hot little hands was an MBX4 and it was some more fun to rip around in the dirt. I promised wifey I'd never go back to dirt racing when I quit last time so I'm not sure how she would feel if she saw an 8th off road buggy on my work bench these days.

I feel like a junkie fighting relapse over (as wifey describes them) a stupid r/c car. She's happy that I'm flying these days, and I'm enjoying it as well, but it's tough to keep saying I don't miss 8th scale off road with a straight face.

Speaking of relapse.................if your wife is like mine she has dieted numerous times. Your relapses are just of a different type. If it's OK for her to need to diet............isn't it OK for you to roost?

She doesn't do diets, just eats well and gets a little exercise daily. As far as that goes I sometimes think the only goofy choice she's ever made was agreeing to partner up with me.

anyone have any info on a u.s. distributor for go engines.

i have 2 gx 5r ho motors and hoping that i could get more.

looks like amain is all sold out.and not selling them anymore.

also nitro north site looks like they are not selling them now.

ebay is the only place.

did i miss out on some info that they have know u.s. distributors now?

A Main is now the US importer/distributor. so until A Main gets more, there's none to be had. (deja vu)


I am no longer an authorized GO dealer.
what GO stuff I have remaining is shown at the webstore.

Hey Matt, how's it going man.

A-Main will be waiting for the improved 3 needle carb (new hard anodised throttle slide). These are slow in coming from the factory, so I doubt A-Main will see a delivery of 3 needle carb motors to re stock until early May.

GO have also released an entry level G5T motor, which will be available here in NZ late April. It's a 5 Port, turbo head. Basically the GX-5R with a different crank. They will be very well priced.
Don't know if A-Main is going to stock those.

You tried one of these grizz?

Silver crank case?


M

You tried one of these grizz?

Silver crank case?


M

I'd been breaking in the engine (GX-5R), and have probably ran 2.5-3 litres of fuel through it, and had it out of the car for other reasons, so I took the time to replace the conrod. When I looked at it, the upper hole in the conrod seemed slightly oval. I measured it at 4.08mm top to bottom, and 4mm side to side.
Was this conrod really in need of replacement or not?

I had bought a new conrod, but it is not exactly the same as the original one.
The original one had two oil holes in the top hole, one from the top and one from the bottom.
The new one only has a single top oil hole in the top. Does this matter? It is a genuine Go Engine part, I figure there are probably revisions of these.

Any ideas?

Next time I was thinking to use the slightly 2nd hand conrod I have now from the break in, for the next break in? would that be allright? Then I don't have to waste another rod?

I'm going to tear down my GX5R in search of air leaks. The tune was all over the place last night, wouldn't idle for anything until it was too rich with an idle gap too large, then would run lean and hot on the track. I know it sounds like the average woman tune, but when I leaned out the bottom and tried to close the gap it died very quickly on the stand. It has been a great motor so I'm sure I have a leak somewhere. Maybe 6.5-7gallons.


So.... I'll start by checking fuel and pressure lines, tank, O-rings in the hsn, lsn, idle screw, pinch screw, carb throat, boot, and the front bearing.

For the Go veterans, are there specific Orings or spots that are the most common where I should give extra scrutiny? Are they the same bearings for GX5R and GXII5RHO?

Hi Travis,

The GO motors are pretty well sealed up, and the O Rings have great longevity.
At 6 - 7 gallons I would say the front bearing might be starting to call it a day. That would be your most common place for an air leak in the actual motor itself.
The bearings and all O rings are the same as the GX Series.

Front bearing 7 x 19 x 6
Rear bearing 14 x 25.4 x 6

When you pop the carb out, check the lower O Ring (OR-0004) that sits in the crankcase.
With the powerful servo's we use on the throttle these days it is possible to get some movement of the carb body when applying the brake hard. This can move the bottom of the carb throat around on this O Ring and chew it up a little.
If it looks a bit chewed or soft I would replace it, and the carb throat O Ring (OR-0014) just to be on the safe side.
The pinch bolt O Rings (OR-0032) are usually sweet, as is the back plate O Ring (OR-0003).

Hell no..... Tell me more Mr M

Travis,
with the engine at operating temp and the glowplug out, check to see how much pinch it has. One of the first things to happen when the pinch is going is, the idle goes away. Then it will only idle with a large gap and rich bottom. I'm not saying that this is what's wrong, but it's worth checking.

I leak check engines by taking the engine out, adding a piece of fuel line to the carb fitting, then cover the carb and exhaust openings with a fingertip over each (glowplug still in place , of course). Submerge the engine in a sink of water and then blow into the fuel hose. The most common leaks I've seen are front bearing seal and low speed needle o-ring. If you manage to blow hard enough, you might see a small leak at the carb boot. If it isn't torn or have holes in it I wouldn't worry about it much. It's almost impossible to get a perfect seal at the slide.

Yes, bearings are the same GX5R and GXII5R-HO.

post with your results please.

Moto