Funky sawman
Pony Power
- Local time
- 2:26 PM
- User ID
- 2609
- Joined
- Feb 10, 2017
- Messages
- 2,377
- Reaction score
- 9,496
- Location
- North idaho
I had an engine builder come by my place today, to cheer me up and swap lies about engines lol
I showed him the crosshatch pattern that was still present on the bottom of that old 371 jug. I will state, this guy builds car and truck engines, and some race atv 2 strokes, he knows nothing of chainsaws, and he owns a very nice cnc honing machine and boring machine.
Well i asked him what kind of ring did the factory crosshatch pattern intend to use. He said given the pattern it would be for cast iron or cast iron alloy. I said what about a chrome faced ring, he said no way. Chrome requires different grit and pattern angles for proper and quick break in. That was all we talked about, really. He has like 20 different grits he uses, and also every ring alloy requires different crosshatch to ensure proper sealing. Just my findings and trying to makd sence of low cranking compression. He agreed that one thin ring was risky for proper seal but when i said they have a 1.2mm single ring he said great, much better, sounds likd the perfect harmoney between the 1.5mm and 1mm.
Look at the old huskys thin rings, always 2 thin rings, which also made perfect sence to me and he explained it. All about some gas that floats the ring and stuff i dont understand
I showed him the crosshatch pattern that was still present on the bottom of that old 371 jug. I will state, this guy builds car and truck engines, and some race atv 2 strokes, he knows nothing of chainsaws, and he owns a very nice cnc honing machine and boring machine.
Well i asked him what kind of ring did the factory crosshatch pattern intend to use. He said given the pattern it would be for cast iron or cast iron alloy. I said what about a chrome faced ring, he said no way. Chrome requires different grit and pattern angles for proper and quick break in. That was all we talked about, really. He has like 20 different grits he uses, and also every ring alloy requires different crosshatch to ensure proper sealing. Just my findings and trying to makd sence of low cranking compression. He agreed that one thin ring was risky for proper seal but when i said they have a 1.2mm single ring he said great, much better, sounds likd the perfect harmoney between the 1.5mm and 1mm.
Look at the old huskys thin rings, always 2 thin rings, which also made perfect sence to me and he explained it. All about some gas that floats the ring and stuff i dont understand
