XP_Slinger
They’re Just Saws
- Local time
- 8:22 PM
- User ID
- 845
- Joined
- Feb 9, 2016
- Messages
- 6,089
- Reaction score
- 27,523
- Location
- Central NY
Without warning I got the urge to tear down my 357 and do some grinding yesterday. Over the winter it got a muffler mod and base gasket delete and it responded very well.
So my thinking on porting was not to go extreme, but rather make some small changes that bring port height closer to where they were prior to the gasket delete. Timing before grinding was 108 / 122 / 72.
Not wanting to go crazy in an attempt to learn what this saw likes I put them at 106 / 120 / 73. Since intake gained from the gasket delete I only changed it by 1°. I also widened the exhaust by 1mm and advanced the timing by roughly 1/4 width of the key.
So what ya think? I'd like to get some discussion going on this saw...it's one of my favorites. With any luck I'll get a video up later today running it against my brothers 357 (@RIDE-RED 350r) that has no gasket and a MM. Now that I've done some grinding on mine I'm sure his will be destined for the bench very soon...lol.
So my thinking on porting was not to go extreme, but rather make some small changes that bring port height closer to where they were prior to the gasket delete. Timing before grinding was 108 / 122 / 72.
Not wanting to go crazy in an attempt to learn what this saw likes I put them at 106 / 120 / 73. Since intake gained from the gasket delete I only changed it by 1°. I also widened the exhaust by 1mm and advanced the timing by roughly 1/4 width of the key.
So what ya think? I'd like to get some discussion going on this saw...it's one of my favorites. With any luck I'll get a video up later today running it against my brothers 357 (@RIDE-RED 350r) that has no gasket and a MM. Now that I've done some grinding on mine I'm sure his will be destined for the bench very soon...lol.