Converting g1 cart to sawmill any help

rib33024 · 04-28-2015, 02:05 PM

What is the compression on this engine?. When is the last time the engine has been rebuilt? have you ever changed the crank seals ?

georgia088 · 04-28-2015, 02:22 PM

I haven't done a compression test. I've had the cart for about 4 years and 2-3 of those it has been parked not being used. I don't know prior to that what had been done to the motor, but I would guess it has never been rebuilt. If the crank seals are bad would it make the motor run bad or just lose horsepower? How difficult is it to change the crank seals? How can I test the crank seals? I have read a few posts about it but how time consuming and difficult is it to do? Thanks again!

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georgia088 · 04-29-2015, 06:40 PM

Alright. Looking for more help. I am still unable to get motor to run like its supposed to. I'm about ready to give up on the motor and buy a harbor freight motor and put in its place. But, this is what all I've done. I did hook up a fuel pump to rule out the gravity feed problem and it runs the same (lot of popping from exhaust). I ordered a carburetor and put on and it; no change. I reconnected the oil reservoir/pump and ran gas with no oil; no change. I checked the compression and it was around 125 psi. Both the new and old carbs are spitting gas out where the breather goes instead of sucking. I keep reading about the crank seal but would they be bad with compression reading 125 psi? And two. Don't know that I would want to spend time or money to fix them if they were bad. How difficult is it? I am beginning to lean toward putting new horizontal shaft motor on, and will probably need tons of help if I go that route! Thanks for all of your help!

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cgtech · 04-29-2015, 07:25 PM

A 2cycle "reed" motor spitting fuel would send me right to inspecting/replacing reeds.

georgia088 · 04-29-2015, 07:40 PM

If reed valves need replacing would that make compression be lower that 125 psi? Thanks for answering.

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cgtech · 04-29-2015, 07:43 PM

Quote:

Originally Posted by georgia088

If reed valves need replacing would that make compression be lower that 125 psi? Thanks for answering.

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I dont believe so.

georgia088 · 04-29-2015, 07:46 PM

How difficult would it be to replace reed valves? For someone that isn't a mechanic.. Lol

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cgtech · 04-30-2015, 01:11 AM

Quite easy, the 4 bolts that hold the black rubber intake and carb onto the engine also hold the reeds.

georgia088 · 04-30-2015, 02:39 AM

Thanks! Is there a way I can check to see if the reeds are bad?

Also, just to be sure I have everything connected right; when oil injector pump is bypassed, (I'm running at 50::1 when oil pump is bypassed) I have the fuel supply line to carb and small oil line that's on the same side of carb connected. That's it. Other than throttle and choke connections. There is a place on the opposite side of carb for a hose connection, but I have nothing hooked to it. Is this correct?

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cgtech · 05-01-2015, 06:40 PM

Look around here for the G1 service manual, it tells the inspection procedure i think.

04-28-2015, 02:05 PM	#11
rib33024 ...................... Join Date: Apr 2009 Location: FT Lauderdale FL. Posts: 16,416	Re: Converting g1 cart to sawmill any help What is the compression on this engine?. When is the last time the engine has been rebuilt? have you ever changed the crank seals ?

04-28-2015, 02:22 PM	#12
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527	Converting g1 cart to sawmill any help I haven't done a compression test. I've had the cart for about 4 years and 2-3 of those it has been parked not being used. I don't know prior to that what had been done to the motor, but I would guess it has never been rebuilt. If the crank seals are bad would it make the motor run bad or just lose horsepower? How difficult is it to change the crank seals? How can I test the crank seals? I have read a few posts about it but how time consuming and difficult is it to do? Thanks again! Sent from my iPhone using Tapatalk
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527

04-29-2015, 06:40 PM	#13
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527	Alright. Looking for more help. I am still unable to get motor to run like its supposed to. I'm about ready to give up on the motor and buy a harbor freight motor and put in its place. But, this is what all I've done. I did hook up a fuel pump to rule out the gravity feed problem and it runs the same (lot of popping from exhaust). I ordered a carburetor and put on and it; no change. I reconnected the oil reservoir/pump and ran gas with no oil; no change. I checked the compression and it was around 125 psi. Both the new and old carbs are spitting gas out where the breather goes instead of sucking. I keep reading about the crank seal but would they be bad with compression reading 125 psi? And two. Don't know that I would want to spend time or money to fix them if they were bad. How difficult is it? I am beginning to lean toward putting new horizontal shaft motor on, and will probably need tons of help if I go that route! Thanks for all of your help! Sent from my iPhone using Tapatalk
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527

04-29-2015, 07:25 PM	#14
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Converting g1 cart to sawmill any help A 2cycle "reed" motor spitting fuel would send me right to inspecting/replacing reeds.

04-29-2015, 07:40 PM	#15
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527	If reed valves need replacing would that make compression be lower that 125 psi? Thanks for answering. Sent from my iPhone using Tapatalk
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527

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04-29-2015, 07:46 PM	#17
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527	How difficult would it be to replace reed valves? For someone that isn't a mechanic.. Lol Sent from my iPhone using Tapatalk
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527

04-30-2015, 01:11 AM	#18
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Converting g1 cart to sawmill any help Quite easy, the 4 bolts that hold the black rubber intake and carb onto the engine also hold the reeds.

04-30-2015, 02:39 AM	#19
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527	Converting g1 cart to sawmill any help Thanks! Is there a way I can check to see if the reeds are bad? Also, just to be sure I have everything connected right; when oil injector pump is bypassed, (I'm running at 50::1 when oil pump is bypassed) I have the fuel supply line to carb and small oil line that's on the same side of carb connected. That's it. Other than throttle and choke connections. There is a place on the opposite side of carb for a hose connection, but I have nothing hooked to it. Is this correct? Sent from my iPhone using Tapatalk
georgia088 Gone Wild Join Date: Jul 2012 Posts: 527

05-01-2015, 06:40 PM	#20
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Converting g1 cart to sawmill any help Look around here for the G1 service manual, it tells the inspection procedure i think.

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