10-30-2022, 05:25 PM
(10-30-2022, 10:49 AM)Mark Loraine Wrote: West Bend engine difference between the 610 and 820, like bore size and possibly a way to tell through the exhaust port with a pair of digital calipers? I'm trying to avoid disassembly but will likely have to pull the head off.
So anyways, bore size is needed indeed.
Thank You,
Mark L./SWNY
610 bore is 2.187, 820 bore is 2.531. Magnet test works, 610's have a cast iron sleeve, there are a few late 610's that have a chrome bore so the magnet test will not work on those. A rough measurement through the exhaust port: from the exhaust gasket flange the 610 measures 2.991, the 820 measures 3.154, mind you these are rough measurements with a digital caliper but are close enough to tell a 610 from an 820, all this is with stock bores.