149.99 for the go gx5r ho is a pretty sweet deal

GXII-5RHO 5+2 Port .21 Buggy Engine Combo w/EFRA 2072 Pipe (Turbo Plug)
[GOTGXII-5R+PI2072_OLD]

Low Price: $249.99
Special: $179.99

that's insane Amain

Sounds like a plan to me. I'll dig out my stuff and get a fresh look at it first. I gotta admit though, after seeing the prices on Amain I'm tempted to just grab up a new one.

Yep. To be quite honest, it would be silly to miss out on a deal like that.
The GXII-5RHO is a sweet motor, and at those prices it's an out and out steal.

Just one ????
At that price it's one Mamba or two GXII's with pipes !

sold off my werks engines and picked up a couple used gxII ho's.

and couldnt pass up the amain prices.so i picked up another.thanks for the heads up on that deal.

so it looks like im all in on the go engines.

i did replace the rods on both the used motors,since the previous owner stated he had a gallon thru each.

after doing some reading on here i also am using the od 97t plug.much better price than the o.s. p3 plugs.

other than following the tune guide that is listed on the thread.
is there anything else i need to check out on the used engines.
any help would be great...

oh and i just picked up a competition heat engine warmer from nitro north.
best price i found anywhere.

the od97t plugs are the way to go, i also use the 87t and 77t in mine with no problems. you will like the engines, very durable with tons of power. with only gallon on the used ones you have......they will get better as you go.

I already have pipes, and the only electrics around here have wings.

Damn those A-main prices.. but US shipping only.. time to get on my knees to the mother in law and beg the use of her address then A GXII at those prices isn't to be missed..that's not much more than a PRS set normally for the entire engine.

That really is a great price. Unfortunately Greece is making it more expensive for those of us on this side of the pond by the day..(OK, only slightly.. But still.. )

I would give them both a good check to see everything is done up tight and the bearings are good, something we do to the head is fit a 7-8mm strip of fuel tubing between each fin on each side of the motor, helps with vibration and fins comming away in the middle area, works on the GX1s as well.

just bought one of amain couldnt pass it up its the gxII 5r ho has anyone tired the werks 2013 pipe with it , i am coming from a werks b5 had an issue with it so wanted to try something else, also i am breaking it in the sidewinder 30 percent anything special to be done ?

The 2013 goes very good on the GXII. The only down side is the run time is not quite as good as the 2072 etc. The Werks 2013 pipes have a wonderful bark to them

Just use any reputable run in method. We prefer the heat cycle method keeping the motor as close to 200 - 230 F as you can on every tank by foiling the head etc.
This will result in a relatively fast and smooth run-in and a long lasting motor as well. If you have a spare .2mm head shim, pop this in to relieve the compression for the first 12 - 15 tanks then remove it. Makes it easier on the motor and you .
I wouldn't recommend breaking the motor in on 30%. Get a couple of litres of 25% for the first 15 or so tanks. Once things start to loosen up a little and you remove the .2mm shim, then switch up to 30%.

Read the run-in section on our website if you want more info on the method we use. It's on the Tech Tips page at http://www.go-racing.co.nz

i did check the bearings and put a new rod in them.
thanx for info on fuel tubing.

all my lhs has is 30 percent at the moment or realy old quarts of traxxas 20 percent dont wanna run that and can i use a shim off a werks b5? so i can use 30 percent and no shim if i have to? it will just be alittle harder on the rod?