Originally Posted by meno222 (Post 7091729)

do you guys know if the low end needle they sell at amains is the long or short version.iam already used to the long needle and i would like to get another long needle for 3pr that came with the short one, thanks
here is the link for amain needle
http://www.amainhobbies.com/product_...hrottle-Needle

Originally Posted by MassiveMods (Post 7095876)

Hang on .. What type of plug are you using ? what sort of fuel are you using ? what pipe are you using ? Is the engien rich ? is there a bit of fuel coming out the pipe un burned ?

If the engine is fluffly and rich then just lean the LSN about 1/4 turn , chances are you wont get it to run till it gets a chance to burn the fuel properly , the other problem is with new engine you are fighting a war on 2 fronts.IF The engine is tight and its rich .. This is a shitty combo to keep running , rich settings will constrict the sleeve ie it wont expand through heat.

SO

recommendation is

Run a med to hot plug

about 20 % nitro

Originally Posted by vmlopes (Post 7097829)

Hey Mike, I am running the EFRA 2072 that came with the engine as a combo and a T3 plug, fuel is Byrons 25% I also have fitted the extra shim......no fuel coming out the pipe, which surprises me!! it does have smoke.

Will have a another go today and get another plug...........the leaflet that come with the engine states HSN 1-2 turns out? thats a hell of a variable one whole turn?

Anyways will try again with both needles flush and go from there, thanks for your help and anything else you can think of is appreciated

Originally Posted by Gizmatron (Post 7097904)

1-2 turns out from what?...I should ignore that and go with both needles flush.Then lean the LSN just until it idles properly.This is the standard way to start with these motors.Again..and this can't be said enough..check the idle gap BEFORE anything else!

Originally Posted by chevydc44 (Post 7099296)

I was wondering what is the difference between the old with the silver head and the new one with the orange head the 5 port motors

Originally Posted by losi_alaska (Post 7099363)

Hey guys I have 2 Go motors 2 /21's They both have the red head and they are both 3 port engines. one of them has a silver crank case and the other is black. The serial numbers are US0000470 silver case and the other is US0000566. Any idea why they changed colors??? Which of these 2 motor's would benifit best with some mod work done to it. Or should I sell these 2 and get a new one.
Thanks Jim

Originally Posted by Gizmatron (Post 7099418)

well apart from the crank,gudgeon pin and carb slide being TiNi coated,the new lighter con rod,carb completely revamped, and I guess port timings changed (not an expert on this) it also depends on which gen the silver head is....there were some differences between gen 3,4,and 5 engines too..

Originally Posted by chevydc44 (Post 7099561)

How do you know what gen it is I got the motor from a friend

Originally Posted by Gizmatron (Post 7099766)

Ummmm somewhere in this forum there was a list of the changes to identify different gen motors..best way is to post a couple of pics here..make sure to get both the crancase and the carb clear in the pics and one of the GO specialists will tell you what you have for sure..

Originally Posted by chevydc44 (Post 7099830)

I have this GO TECH MOTOR can anyone tell me what generation this motor and will I have to change the carb on this motor cause i read in the forums that the older motor the carb is not that good

Originally Posted by bigmatt (Post 7100341)

that looks like a gen 5 engine,with a different carb? Not a go-tec carb.

Originally Posted by chevydc44 (Post 7100366)

It has a Go carb just wondering how this will run since it's the older model and does anybody know what are the stock settings are for the carb