@grizz1 and Flanno:
Thank you. That looks awesome.

Yep. If you can get your hands on one - do it. You won't be disapointed.
Check out the German distributor at www.buggysport-racing.de

+1 on that

added more clips to original post

run 1 thick and 1 thin! lol...on 30% just try not to run a hot plug and you should be great!....you should only have to richen your needles about an hour each if any at all!

I'm not ignoring ya bud, just don't want to give ya the wrong answer.

ill give it a try tomorrow and see how it reacts, runs pretty good the way it is now, still kinda gettin the 1/2 bog. when i get that right i doesent want to idle as well.

Just remember you have to juggle things to get it right.
If you lean or richen the HSN, you will have to make corresponding opposite adjustments to the LSN most times to reset the balance.
Also if you raise or lower the idle, you will be directly richening or leaning the LSN, so you have to reset the balance there as well.

No one said is was simple , but it's very satifying when you get the hang of it.

Well my MG setup at the moment is 6.5mm venturi, 0.4 shim stack, Amain 25% and just started trying the GO T6 plug, runtimes with this setup has been consistant 11 to 11.5 min(at sea level)....and loving it

Yeh my Mg66 runs 7mm venturi,25% fuel ,go T4 plug,alloy .3mm + one .1mm copper shim...4mm shims total (well it will once I run it in again anyway) and I get regular 12m40 runtimes.I'm fast but very smooth on the throttle though , however even in nutter mode I can get over 10 minuutes .

The fuel thing though..Pretty much all the guys here run the 33% but I hated it when I tried it.Negligible performance increase over the 25% but the tuning was way harder to get spot on and it ate plugs at a frightening rate if I was even a fraction on the lean side.I don't see the need for anything over 25% and according to our French federation they are limiting nitro content to 25% max anyway for 2011.So I guess there will be a lot of 33% part containers being given away this xmas over here

In my 808 with the MG66 I can leave guys running 33% with a 9mm carb,no insert and fuel stops every 6 minutes down the straight ..They don't much like it though! should see the looks on their faces when I say 10 minute stops for me please.Muahahahahaaa

Boooooyeeeeeeh

could use some tuning advice.

I just got a used gx7, compression feels pretty strong.

* what plug should i use?
* what shim combo on 20% ?
* should i tune top or bottom first ?
* only two pipes available (jp-1 / jp-4)
* dare i go as low as the 6mm. reducer or will it be hell to tune ??

Note: weather here is in the high 70s' to mid 80s'

ANYTHING??

For plug the 97t o'donnell is whats recommended and what most of us use. As far as shims, take a look at the go engine usa website. For tuning you need to find which needle you have. If its the short needle you just tune as normal. For the long needle you need to tune the LSN first and then tweak the HSN as needed. Use the guide on massivemods website as a guide. For tuned pipe, the dynamite 086 is cost effective, good looking and does a great job. The smallest reducer i'd mess with is the 7mm, but thats me, you can try the 6mm if you want.

http://www.massivemods.com.au/index....5237dc97b55454

much appreciated!