Briggs 6hp OHV 3/4 PTO crankshaft part number?
- Thread starter chrisr
- Start date
Does it look like this?
https://www.partstree.com/parts/briggs-stratton-715240/
https://www.partstree.com/parts/briggs-stratton-715240/
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Only number I know there is the 1.180" clone rod journal. That's good. Reassemble with the crankshaft, rod and piston and measure the stroke. It should be either 54 or 55mm.
There's not a lot of knowledge about the Briggs OHV engine. My guess is that they are just a big bore clone (208) with Briggs stickers and plastic. That would have a 54mm clone crankshaft and a 70mm bore.
I've never measured stroke. The way I would do it is measure how far the piston is in the hole then get the piston at BDC and measure up to the deck. Then subtract the in the hole number to get the stroke.
If the piston is .038" or more in the hole I would bet that it has a 54mm stroke crankshaft.
There's not a lot of knowledge about the Briggs OHV engine. My guess is that they are just a big bore clone (208) with Briggs stickers and plastic. That would have a 54mm clone crankshaft and a 70mm bore.
I've never measured stroke. The way I would do it is measure how far the piston is in the hole then get the piston at BDC and measure up to the deck. Then subtract the in the hole number to get the stroke.
If the piston is .038" or more in the hole I would bet that it has a 54mm stroke crankshaft.
Are you able to measure how far the piston is in the hole at TDC?
I would say that if it's .038" or more in the hole you could use either crankshaft. With .038" or more the 55mm crankshaft should bring the piston up to the deck or a couple thou out of the hole. You would use a .027" or .036" head gasket with that and have more than stock compression.
Only other concern is the taper for the flywheel. I got out a clone crankshaft and have no idea how you got 1.18" on your flywheel measurement.
If it doesn't have a clone taper for the flywheel and has a clone rod journal that would be a first.
I would say that if it's .038" or more in the hole you could use either crankshaft. With .038" or more the 55mm crankshaft should bring the piston up to the deck or a couple thou out of the hole. You would use a .027" or .036" head gasket with that and have more than stock compression.
Only other concern is the taper for the flywheel. I got out a clone crankshaft and have no idea how you got 1.18" on your flywheel measurement.
If it doesn't have a clone taper for the flywheel and has a clone rod journal that would be a first.