HarleyTechTalk

Technical Forums => Twin Cam => Topic started by: xlfan on February 17, 2021, 04:12:47 AM

Title: Hastings 2M 4805
Post by: xlfan on February 17, 2021, 04:12:47 AM
Does anyone know if inside taper of 2nd compression ring is facing up or down?

There is no dot marking on this Hastings 2nd compression ring, and I can't find any info.
Title: Re: Hastings 2M 4805
Post by: rigidthumper on February 17, 2021, 04:38:42 AM
Second ring should have a dot (faces up), but if not, orient it bevel down, so it acts as an oil scraper on the way down. \
Title: Re: Hastings 2M 4805
Post by: jsachs1 on February 17, 2021, 01:19:20 PM
Quote from: xlfan on February 17, 2021, 04:12:47 AM
Does anyone know if inside taper of 2nd compression ring is facing up or down?

There is no dot marking on this Hastings 2nd compression ring, and I can't find any info.
Are you sure it's a second ring? I've seen Hastings rings packaged wrong now and then. Should NOT have a shiny face. Are there any markings at all on the ring? Does its mate for the other piston have a dot ?
Title: Re: Hastings 2M 4805
Post by: xlfan on March 21, 2021, 12:54:22 AM
I didn't want to take any chances, ordered a new set of rings and this set had a dot mark on the 2nd ring, and as suggested, bevel down. Thanks👍