1984 ex-go gas

TECHBOSS · 07-10-2011, 08:24 PM

i just picked up this cart and it won't start,backfires here and there. so far i have checked for spark,clean fuel to the carb,compression is 50 at best. i believe it is overhaul time. where do i find a overhaul kit? anything else i should look at before i pull it out?

Dave Box · 07-11-2011, 05:09 AM

Hi Techboss and welcome to the forum.

As I am sure that you have realised it is time for a rebuild. Your choies are to rebuild the top only or the complete engine. I rebuilt both as my crankshaft had locked and I am glad I did. The top end kit can be found for less that $200 and the complete kit for less than $400. Just surf on any of the forum sponsors, they are all decent people. My favorite is everything carts but you should make your own call.

Here are a few things I have learned.

Before you pull the engine remove the drive belt and holding the clutch try to pull the engine up and down. If the clutch moves but the engine doesn't your bearings need replacement. (Three of them at $7 each)
If you decide to only rebuild the top end you must replace the crankshaft oil seals as well. Getting the clutch and the flywheel off is a bear but I promise that those seals are already on their way out and they dramatcally affect engine performance. Replace them now or weep bitter tears of rage and frustration tomorrow.
When you replace the piston make sure it goes in the right way. The port in the skirt faces the carburetor. As a cruel joke if it is the wrong way the engine will run but only just. Checking the piston will be the thing you after you have tested everything else and eventually torched the cart.
There are many many other tips and tricks so if you do this thing and get stuck, shout out, lots of us two stroke boys are here to help.
Finally congratulations on the new car,t a newly built and well running two stroke will run rings around these four stroke boys.
Dave

TECHBOSS · 07-11-2011, 12:56 PM

looks like the cylinder is damaged. source for that would be helpful, or is their oversized piston's availible?

Dave Box · 07-11-2011, 01:05 PM

You can either take the cylinder to a machine shop and have it rebored with an oversized piston or buy the top end rebuild kit. This gives you a new cylinder, piston, gaskets and everything else you need. As I said before you really should also replace the oil seals while the engine is out.
Just click on the site sponsor tab above and pick one. They all seem to carry the kit.

Dave

TECHBOSS · 07-28-2011, 05:38 PM

IT'S ALIVE AGAIN.
thanks for the advise, bearings were shot like you thought.

Dave Box · 07-28-2011, 05:44 PM

Good job, well done enjoy your cart.

Dave

TECHBOSS · 07-28-2011, 05:57 PM

since your online any suggestion for belt length?

rokcrlr · 07-28-2011, 07:21 PM

This is the belt I used and most other guys also the best price and it will be at your door in 2 or 3 days. Their not a site sponsor but the price can't be beat.
http://www.mfgsupply.com/m/c/HP3004.html

racin161 · 07-29-2011, 06:01 AM

Bought one from them and was very pleased with the service. It also showed up as a goodyear brand but who cares.

07-10-2011, 08:24 PM	#1
TECHBOSS Not Yet Wild Join Date: Jul 2011 Posts: 4	1984 ex-go gas i just picked up this cart and it won't start,backfires here and there. so far i have checked for spark,clean fuel to the carb,compression is 50 at best. i believe it is overhaul time. where do i find a overhaul kit? anything else i should look at before i pull it out?
TECHBOSS Not Yet Wild Join Date: Jul 2011 Posts: 4

07-11-2011, 05:09 AM	#2
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,190	Re: 1984 ex-go gas Hi Techboss and welcome to the forum. As I am sure that you have realised it is time for a rebuild. Your choies are to rebuild the top only or the complete engine. I rebuilt both as my crankshaft had locked and I am glad I did. The top end kit can be found for less that $200 and the complete kit for less than $400. Just surf on any of the forum sponsors, they are all decent people. My favorite is everything carts but you should make your own call. Here are a few things I have learned. Before you pull the engine remove the drive belt and holding the clutch try to pull the engine up and down. If the clutch moves but the engine doesn't your bearings need replacement. (Three of them at $7 each) If you decide to only rebuild the top end you must replace the crankshaft oil seals as well. Getting the clutch and the flywheel off is a bear but I promise that those seals are already on their way out and they dramatcally affect engine performance. Replace them now or weep bitter tears of rage and frustration tomorrow. When you replace the piston make sure it goes in the right way. The port in the skirt faces the carburetor. As a cruel joke if it is the wrong way the engine will run but only just. Checking the piston will be the thing you after you have tested everything else and eventually torched the cart. There are many many other tips and tricks so if you do this thing and get stuck, shout out, lots of us two stroke boys are here to help. Finally congratulations on the new car,t a newly built and well running two stroke will run rings around these four stroke boys. Dave

07-11-2011, 12:56 PM	#3
TECHBOSS Not Yet Wild Join Date: Jul 2011 Posts: 4	Re: 1984 ex-go gas looks like the cylinder is damaged. source for that would be helpful, or is their oversized piston's availible?
TECHBOSS Not Yet Wild Join Date: Jul 2011 Posts: 4

07-11-2011, 01:05 PM	#4
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,190	Re: 1984 ex-go gas You can either take the cylinder to a machine shop and have it rebored with an oversized piston or buy the top end rebuild kit. This gives you a new cylinder, piston, gaskets and everything else you need. As I said before you really should also replace the oil seals while the engine is out. Just click on the site sponsor tab above and pick one. They all seem to carry the kit. Dave

07-28-2011, 05:38 PM	#5
TECHBOSS Not Yet Wild Join Date: Jul 2011 Posts: 4	Re: 1984 ex-go gas IT'S ALIVE AGAIN. thanks for the advise, bearings were shot like you thought.
TECHBOSS Not Yet Wild Join Date: Jul 2011 Posts: 4

Today
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07-28-2011, 05:44 PM	#6
Dave Box Respect the Cart Join Date: May 2010 Location: Rocky Mount, Virginia Posts: 2,190	Re: 1984 ex-go gas Good job, well done enjoy your cart. Dave

07-28-2011, 05:57 PM	#7
TECHBOSS Not Yet Wild Join Date: Jul 2011 Posts: 4	Re: 1984 ex-go gas since your online any suggestion for belt length?
TECHBOSS Not Yet Wild Join Date: Jul 2011 Posts: 4

07-28-2011, 07:21 PM	#8
rokcrlr Gone Wild Join Date: Sep 2010 Location: Decatur,IL Posts: 553	Re: 1984 ex-go gas This is the belt I used and most other guys also the best price and it will be at your door in 2 or 3 days. Their not a site sponsor but the price can't be beat. http://www.mfgsupply.com/m/c/HP3004.html

07-29-2011, 06:01 AM	#9
racin161 Gone Wild Join Date: Feb 2011 Posts: 1,515	Re: 1984 ex-go gas Bought one from them and was very pleased with the service. It also showed up as a goodyear brand but who cares.
racin161 Gone Wild Join Date: Feb 2011 Posts: 1,515

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