Farmall M Starter Problems

Hi, I recently replaced the rings in my M, and I tried to use the starter after the replacement but it wouldn't turn the engine over fast enough. I just assumed that the lose bolt that the wire attached to was making a bad connection. I have tried replacing the starter on the M with the starter on my H, which works fine. I assumed that this would fix the problem but the H starter acts just like the starter on the M. I put the starter from the M onto the H and it worked perfectly. Are the new rings just to tight for a starter to crank the pistons over, or is their something wrong with both starters?
 
Did you before installing the new rings clean the grooves out well if you used your old pistons?? Did you also put the rings in and check end gap before installing them in the engine?? Did you also use pre-lube on all the new parts?? If you can not answer yes to all of those questions then good chance one or more is where your problem is
 
There could be issues with the engine. Assuming the starter cranked the engine to begin with and nothing changed in the starting system, meaning the same battery same cables and same starter switch, the fact of new rings should make little difference in cranking speed. If the cables are Ogauge or )) gauge, and the battery is solid and charged, it should crank well. I will assume you make the starting components "good". Rings if not gapped can cause dramatic drag. The ring gap should be about .006" to .007" per inch of cylinder bore. If tighter than this it can and will cause seizure of the engine. If the ring gap is correct (and not guessed at) I would pull start it and let it get broken in a bit before getting worried. If it stops after 20 seconds of pull starting, I would begin to think about the rings.
I also assume you used abundant engine oil on the piston/rings and sleeves when installing the pistons. Jim
 
Ya I have built enough engines over the year to learn things the hard way. I have round into all those being problems in the past
 
Not uncommon with newrings both of your starters are probably needing to be refreshed. You know the engine is free because you turned the engine over somehow when you installed the new rings. You could pull the tractor to get it started and get it running after a good warm-up then your starter mite work. Is the battery up to snuff and are the cables and the sw up to snuff. I find the same problem sometimes after a new engine is finished. You also could use a 12v batt to start. You know the engine is free cause it does turn oever just not fast enough to start.
 
I have already started it multiple times. There is probably around 5 hours on the new rings. I am having to crank start it right now. It has a new six volt battery and new wires.
 

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