i use thick zipp ties with a bit of oil on the pin after sleeve is out, never use a metal tool on your rod !!!

AARCMCC 2009 Truggy Nationals Adelaide 15+min

then packed away to run MG66 full time.

Just 2 weeks ago MG66 finally died after 62 litres on the original rod so pulled out trusted old 5 port to finish the meet at LRRCC NSW, did a 1 stop 25min Amain. with a GO 2072 pipe.

on C2AmainBlueDot 25%.

Your a legend Flanno

hobdog - sounds like you have a Gen5 or 5.5 5 Port. Other than the GO 2072 pipe which would be the recommended choice, the 086 pipe you have will work great on the 5 Port, with good milage too. Give it a try and report back.
The 053 pipe you have is better suited to the GO 7 Port motor.

Thanks guys, I will give the 086 a try.

I find a thin cable tie works really well for getting the rod off too.
Plastic won't damage anything if you have a little mis-cue

Getting the rod back on can also be a bit tricky. If your doing the bearings as well, what you can do is fit the main bearing only then install the crankshaft.
Now without the front bearing in, you can get the little bit of movement you need to pop the rod back on easily. Once the rod is fitted and sleeve put back in fit the front bearing using the crank as a guide. Install the new bearing after heating the crankcase by placing a used bearing on top of it, then tap the new bearing home with something suitable (hollow tube placed over the crank end with the same diameter as the bearings is cool).
Of course if your just changing the rod and not doing the bearings, this is of little use - so you just have to get that rod back on as carefully as you can. I have toyed with fitting the wrist pin and clip through the exhaust port, but this is very tricky, and I really do like to make sure the wrist pins are fully seated with a magnifier - just to be 100% sure, because we all know what happens if they come out .

I got the rod off, thanks for the help guys. In the end I basically just had to man handle it a bit. Putting the new one back on was even more of a challenge. I figured out that tapping it back on using a wodden dowel was the ticket. I really dont like putting anything to a rod but damn, it was starting to get really irritating.

I was really surprised that after sitting submerged in water for 4 hours that there was no rust. Regardless I changed the rods and bearings. I also took the carbs apart and cleaned them out with fuel. they are both running like new again.

I am looking for the factory settings for the 5 Port.


Thanks !!

Glad your motors where all OK

I think a gentle tap with a wooden or plastic dowell is how most of the new GX rods go back on until around the 2.5 - 3 gallon mark when the tolerances are a little more forgiving So don't feel too guilty.

GX factory settings are

Idle gap .7mm - 1mm
HSN flush
LSN flush

For a base tune, go in .5 of a turn on the LSN and start tuning from there.
Don't adjust the idle gap if the motor won't stay running - lean the LSN until it will idle at the idle gap recommended.

You will most likely have the long needle carb. If you want tuning tips on this please PM me for details.

It's a zip tie for me from now on . Great idea.
See old dogs can learn new tricks LOL!!

When taking a rod off a fairly new engine make sure you have a clutch on it to hold the crank back, it will try to come out with the rod.

Rex

Hi Rex, do you plan on having a web site with pricing and such?

If any one can help I need a new rod for a GO7.

need to know what gen go-tec 7 port your running. 22 racer has a email address on the go engine usa web site, there are some others here that sell also

Yes I have rods.
Matt, I would like to get a site up but I'm pretty bad at that sort of thing. I actually just do it for some side money for racing. If I got too busy it probably would take too much time and be no fun.

Rex

Hi Rex.
With your expertise, and the number of guys in your neck of the woods wanting GO parts all the time I reckon a small do it yourself web site woud be fantastic for you. There are plenty of companies offering simple 5 - 15 page sites that you can put together and edit yourself, with no more computer experiance needed than posting text and pictures on here.
I used Vista Print, an international company for my do it yourself site. Cheap, effective, and I would say after 6 months that 70% of my business either comes directly from, or is refered to me by web site visits from customers, old and new.
I am in a similar situation where I work a full time job (shift work) and the business I run on the side pays for all my racing and a little bit more on a good month It's still fun at the moment, but I do know where you are coming from after running other businesses in the past. If it's not fun anymore, then it's time to move on