Definitely go for the GX-5R in your truggy with the 2072 pipe. It will kick butt.
The GX-5R is dominating the truggy class here. If you don't get around 8 gallons or more out the 5R with proper maintenence I would be very surprised.
Visit our website at www.go-racing.co.nz and go to the Tech Talk page from the menu. There you will find break-in, tuning, and on going maintenece tips to ensure you get the best performance and longevity from your new GO motor.
Once it's done a gallon, there are a couple of things you can do to increase power and economy further. Just PM me if you need any further info.
I am not trying to sell you a motor, as you are better off buying from the US in your case, just offering advice to make sure you enjoy your new motor and pass on the good word to others

+1 for Grizz....they know ALOT about these motors!....you will find lots of helpfull knowledge on their site!....

I know this has been talked about but I'm on A main about to purchase the dynamite 086 pipe hard coated. I just wanted to be sure this is a good pipe for this motor? I couldnt find the post where this was talked about. Thanks

the GO 2072 pipe is very good aswell!...but you should be fine with the 086

the MG is as common in truggies as blowies around a BBQ
http://answer-rcusa.com/zencart/inde...ex&cPath=44_43

it's a good pipe but not legal for racing in a lot of countries, if your just club racing u should be fine, otherwise get the 2072 pipe

+1

It was back a few pages. Like Magpie-121 said the 086 is not legal in all countries. If you are running a buggy and it is legal for racing where you live, definitley give it a go. Nice powerband and better economy. If your running truggy on a long open track the 086 will be sweet, but on a tighter track in a truggy the EFRA 2072 will reign supreme.
Basic differences on the MG66 are -

086 gets the motor on the pipe quicker and is better for a point and squirt style of driving. It offers better economy then the 2072.

The 2072 gives a more turbine like spool up on the MG66, so is generally a smoother powerband. A little more bottom end torque, but reduced economy.

Both are excellent on the MG, it just depends on what you are running it in, track layout, and whether you need extra bottom end vs an extra minutes run time.
If you are undecided I would default to the 2072, then you will have no worries about legality etc for bigger events, plus if you tune well the economy with the 2072 is not half bad anyway. It's a win/win whatever you do

I had a few errands to run.... I come back and have several answers on my posts. Nice community! Only other company that has spent that much time talking to me was Neal from CRE. You guys have been great informing me on the product and pointing me in the right direction. That in itself says something for the brand! Thank you all VERY much, let me get my bills caught up and I see a GX-5R in my very near future!

Also, I wanna say Neal at CRE was VERY good to me too. I was not implying anything against CRE.

What are the differences between the 2072 and the 0801? I've read about several engines that run the 0801 so I'm wondering why the 2072 is recommended.

Thanks again,
Rich

I agree the guys on here are very helpful. They are very quick to respond and very informative. Thank you.

The 0801 is the predecessor to the 2072. It is a good pipe, but is very fragile.
It was made of a softer alloy and was notorious for denting and having the stinger bent or broken.
The 2072 is MUCH stronger, made with harder materials and a reinforced stinger etc, plus it has a wonderful powerband on the GX motors (particularly the 5 and 7 Ports). Bottom end to burn, with great top end too. It's only drawback is the bigger volume chamber, which can be a tight fit in some of the modern narrow buggy chassis, but in truggy this is not a problem.
The 2072 on the GX-5R in a truggy is a wicked combo. You will be impressed with the stump pulling bottom end, then by how much it revs out at the top end for a motor with that much bottom. The added bonus is the nice sharp cackle the 2072 produces. Some say it's a bit noisy, but they are just pussies

Those last couple sentences sounded like the climax of a snuff movie to a gearhead! Everything sounds great. I think this is the way to go. I can't wait to order 1!

has any1 ever ran the OS p7 glow plug?....i had to buy 1 as a back up the other day and dont know if i should use it when i need it!

i haven't used this plug, but get yourself the bulk pack of these O'Donnell 97T : http://www3.towerhobbies.com/cgi-bin...&I=LXKAY4&P=ML 6 for $28.92 US, nearly 1/2 the price of the OS plugs & the GOs like them

i usually run the od 77t plugs!....the package on the p7 plug says medium!