Just purchased this for a low price, only has a gallon on it.

Can someone identify which Gen this would most likely be and if it uses the long LSN like the newer GO's?

I did have one of these once when I first got into the hobby. Used to run one in a hyper 7 pro which is a heavy buggy and the thing ripped!
Can't imagine what this will be like with a JP1 pipe!?

Thanks
Rob

Sorry had forgotten to post pictures. Uses a turbo plug. Was still sealed the plastic.

Not sure bout the gen, but this moto is ripped if tune right. Just harder to tune

I think what you have is an "older" engine. I have a 2009 price list and while it has silver heads in it the orange heads are also there and are labeled as "new." Also, the exploded parts view of the GX-5R shows it stock with an orange head.

My guess is you have a pre-2009 engine. I hope you don't end up needing parts for it. They might be hard to find.

guess it is an old stock, here there re-sell it with orange head stated as limited edition lol

If you got it for a good price, who cares about parts. Just break it in nice and easy and than let her rip. I don't rebuild engines. I just replace them. Just really wish GO would get there act back together. I still have one of there engines that is running great as a back up motor. I switched to novarossi when all the issues with the business happened last year. Their motors aren't bad, but when I can get a Italian made motor for about the same price or maybe $20 more. It's a no brainer to go novarossi. If Go ever get their crap together again, I would consider buying one of their new GXII plus motors. My back up motor is the original version and it keeps up with my buddies bonito.

Rebuild or replace, it's all good.

If you have any suggestions about how GO can gets its "crap" together I am willing to pass on suggestions to the factory. Just send me a PM or email.

break them in easy..pre-heat them...they were really tight. Replace the crank rod after a few gallons...they were both kick ass engines. picture was taking in 2009

Is the latest gx series with combo 2013 pipe a competition engine? Hows the power compare to old gx series?

Yep. It's the GX II Plus (with 2103 pipe). It's the newest in the line of GX models. It replaces the very popular GXII 5RHO. It is 2 models newer than the basic GX Series motors.
More linear power band with more top end than the previous 5RHO model.

Edit: See here for pictures and details www.go-racing.vpweb.co.nz/GO-GXII-Plus--21.html

Finally got my GO 7 port going. Some of you may remember I posted pics in this thread of a nitro package I bought for a steal that came with two GO 7 ports.

I decided to try and fire it up awhile back. Set everything back to stock settings, new plug, and fresh fuel. Hit it with the heat gun for a few mins,Plopped it on the starter box and brraapp. Fired right up and idled great.

Let it warm up a bit more and ran it up and down my street for almost a tank to fine tune.

Very happy. I just bought another nitro package for a steal...yes, again.

I got a Caster Racing nitro buggy and truggy, buggy has a Reds R5 engine and Savox servo set up. Truggy has an Ascendancy engine and Savox/HiTec servos.

A spare OS .25 XZ

Also got a Caster Racing ebuggy and truggy rollers.

Tons of spare parts, two Orion RX packs, starter box with 3s lipo, a bunch of tires/wheels...the list goes on.

All for $400

http://www.ebay.com/itm/GO-GXII-Plus...item233bb555bb

Holy cow! This is a great price for anyone looking at a go motor. It's nice to see we have a US distributor again.

Frankly is cheap. Here in MYS best price is usd250 (3.3exchange rate) with no free shipping lol

Guys, i been running go engine for a year and i did put the .2 shim for break in and still using it. Is it:
1. Better to take it out and it will only have total .5shim?
2. Will the power slightly increase and have better response.

Always run 25% nitro so need clarification on the standard shimming is it .5mm?

Currently running a new technical track n struggle on the jump. Most ppl there running picco, orion, os and is a pain in the @##...

Plz advise. Thanks

Get rid of the .2mm shim. It's a break-in shim, and is only meant to be used for break-in to ease up on the compression (first 12 - 15 tanks).

Running it will be decreasing the compression ratio of the motor.
These motors have a reasonably low compression ratio compared to some others to start with, so you will be losing a lot of power and punch - especially running like this in conjunction with using 25% fuel.

If you want peak performance with reliability and a reasonable tuning window - run the stock factory .5mm shim stack, and run 30% fuel.
These motors love the higher nitro percentage, as it effectively raises the compression ratio, and they really perform.
The .5mm factory shimming is suitable for up to 30% fuel - you don't need to change anything (just get rid of that extra break-in shim).