That's what I need run time run time run time. Our track has 47 second laps!! Run time please!!!

like we have said before if your looking for run time get the 7port. Normally the more ports the better the fuel usage meaning better fuel mileage. You will definitly want the 7pt for longer tracks lol

You'll love the 5 port JP!!!

our track is approx 340 metres and a lap will take you approx 45-50 secs averaged.

i've got 4 mates and myself all running Go's 3/5 and 7 ports and we all complete 10 minute heats with no fuel stops.

as grizz said before, if you adjust the Exp and Travel on the radio not only does it increase the run time but it also reduces your lap times through you being more consistent and controlled.

Mike

O.k. Thanks for the help!

So many choices JP

You won't go wrong with either the modded 5 or 7. The Stage 5 5 Port has greatly extended top end when modded to this spec. In fact, it is safe to say it pretty well has the top end of a 7 Port. I run both motors so can get a very good comparison. The other beauty of getting a modded motor (other than they go like stink ) is the increased economy. If you get a Stage 5 motor and run the 6.5 restrictor and set up epa and expo like described previously, you should be getting 12 - 13 min without running it on the ragged edge.
If you go ahead and get the GO, PM me for break in method and a few tips for care and maintenance. Hope you join the GO fraternity.

Grizz, again you was right
Removed hsn and blowed out some debris what I found+turned lsn almost 3in and hsn little more than .5 and got another engine yesterday was great also I changed pressure pipe to about 24cm(before I had about 21cm).
The truggy was running very well,power all around, only now it sometimes flame out when you push throttle at very beginning, (let say after few meters) after you have been idling for longer on track.

Hey, thatīs great news Spura

With the take off thing - sounds like it is a little rich on the bottom end (LSN).
The crankcase will load up with fuel when the motor sits at idle for a little while. The richer the LSN the more it loads up. Then when you go to take off this excess fuel extinquishes the glow plug.
Even a well tuned motor will load up eventually and stall on take off.
Just lean the LSN a little at a time until it will idle cleanly at the same idle speed (no sudden drop in revs as it loads up) and will take off clean and fast after sittng for 10 - 15 seconds.
You can use the pinch test also - bring the buggy in after a short burst. Pinch the fuel line about 1 inch back from the carb fuel nipple.
What you are looking for with a good bottom end tune is for the revs to rise up only slightly (about 500rpm) and the motor to cut out between 4 - 5 seconds after you pinch the line off. This means the LSN is pretty much spot on.
If the motor does not increase in revs and just dies quickly - the LSN is too lean.
If the motor revs up quickly to a fairly high rate, and/or takes longer than 4 - 5 secs to die, then the LSN is too rich. Cheers

Spura - you got PM

you mean with 6.5 restrictor to put lsn 3 turns in ( i think it will be about 3.25..)
isn't too far in?

Thanks, got one

The info what really I have not found is what is "correct" lenght for fuel tube and pressure tube for Go engines for buggy and truggy. Some years ago I had fantastic OPS(Radical) engine, and when I spoke with some people from OPS factory in Italy, they said the lenght of tubes is very important...

So, what you have found for Go engines?

Thanks.

P.S. I found a post that pressure line would be about 7-9inches, that was one opinion...

Hmm - I didn't notice yur needle settings in your last post. They actually seem a little on the lean side. Does it splutter a bit when it stops or just cut out ?
Get your HSN back to .25 in from flush. The HSN setting is very sensitive with the long needle carbs. Once you go just a little too far it will lean bog and start cutting out. Take the LSN back to 2.5 turns in from flush and see how that runs. Make sure idle gap is correct too.
Never worried too much with fuel tubing length. It will change your tune settings because of fuel pressure differences, but as long as you tune the motor to suit the length of tubing I don't think it will make much difference, but I don't know for sure. Is there an optimum length, anyone ??

Well i gave it an honest go and i can say that my first go engine ever purchased is my LAST go engine ever to be purchased.

14 tanks in and it would not tune, i asked numerous questions here about tuning this particular carb and got many thorough answers and i followed the advise to a t. yet this mill still would not tune at all.


The kicker happened just a few moments ago, removed the engine from my buggy and noticed the engine no longer had any pinch (14 tanks old) and the carb which i was going to replace with a os vspec carb is completely siezed in the engine, it will not come out or budge at all! i removed the pinch bolt assembly to make sure there was nothing holding it in place.


I gave it an honest go, i gave go engines a chance and they failed me miserably.

So now i have a very expensive paperweight, or i could recycle it and get .25 back.

BUMMER Sorry to hear that.

If you have followed all the advice given on here as regards break in, long LSN tuning, shortening LSN needles, etc, etc then there isnīt much more advice we can give you.
No pinch after 14 tanks would suggest something is not right, either with the motor itself, or it has been run very lean (not saying itīs your fault ) but if the long lsn carbs are not set right on the hsn, they will run very lean, and with a new motor you might possibly end up with that sort of result. Just my .02c worth. Itīs a pity it didnīt work out for you, because everyone else seems to have huge success with the GOīs. Seems you have made your mind up about them though, so not much point trying to convince you otherwise.

i have read a while back the length is just around 12 inches as this affects the pulsing in the fuel tank and pressure i cant remember if its to short it can give to much pressure and cause flame outs after refueling something but around or just under 12 inches is what you want thats what i have read and told to hope that helps

Sorry, 12inches for fuel line?