Super C starting issues

Anonymous-0

Well-known Member
I'm putting the finishing touches on a Super C that has undergone a complete restoration. I spent the better part of a weekend trying to get the tractor started after assembly, had gasoline all over my new engine paint, rebuilt the carb, and found out that on the new manifold there wre two holes tapped for bolts. What for?
After putting bolts in those holes it runs perfectly - until you shut it off. When the engine gets warm, the starter will not turn the engine over - like there was too much compression, or low battery voltage. New battery, new cables, rebuilt starter with new switch. Engine cold - starts good with starter. Engine warm - starts good with crank.
 
Where is the ground cable attached to. Is it clean & no paint? How big are the cables? Did you get the battery load tested?
 
Measure your battery voltage during a start and see how far it drops. If you have a hydrometer
check the specific gravity in each battery cell
should be in the 1.280 range on a fully charged battery. Hal
 
Check for good ground if using the stupid in the battery box ground. That was always a source of trouble.
If you have a "hold against" ammeter, see what the draw is when cold vs. hot. If no difference in readings, you probably have a connection problem, or battery trouble.
Like Dave says---tight engine/ rings.
 
When using the crank you're not dropping the battery voltage. If you have no problems hand cranking the warm engine I don't think the ring gap is the problem. Hal
 
Thanks for all the comments. The engine was overhauled with all new components. I noticed that the engine seemed really tight. I am hoping that it loosens up over time. I had the ground in the box cable but took it out because it was too stiff. I ran the ground inside the light pedestal. I'm going to try a different grounding point.
 
The very best place to ground the battery to the tractor chassis is using one of the starter mounting bolts at the base of the starter where it bolts to the tractor. You might have to get a cable made up with soldered terminals using 00 gauge cable at a local NAPA or other good auto supplier. Make sure you have nice bright and clean connections at both terminals. HTH, Hal.
 

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