When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I've been running one of Fuel Moto's base maps that I auto tuned for about a year now so I decided to have my bike Dyno Tuned last week (FLHTK Stock engine 10,000 miles-V&H Power Duals-V&H HO mufflers-SE High Flow Air-PV Tuner)
About 1/2 way through an oil light came on. Since I don't have the factory HU anymore (Not that it would tell you anything) He pulled the oil sensor and put on a dial gauge. For whatever reason it was reading abnormally high pressure at idle at 30+ lbs and went up to 50 with a very slight twist of the throttle. He stopped and pulled the crank sensor, but no excess oil like sumping going on. Still not sure the only thing to do was to crack the cam chest open and at least look at the oil pump. He found a few burrs but nothing that he believed would have caused what was going on. He had the latest upgraded oil pump so that was a no brainer at that point. Also since he was in there anyway I decided to go with an S&S 465c and S&S lifters since the stock ones looked bad. Runout was .002 so that was ok. He retuned and everything was fine. Not completely sure what happened (Possible Oil pressure relief stuck?) but below are the pics of the stock cam and lifters that was replaced. In the end it was a good upgrade, just wasn't looking to do it at that time.
Last edited by Smittyjf; Sep 12, 2018 at 07:24 PM.
My lifters and cam looked brand new when I upgraded. Granted I only had around 6k on the bike when I had the work done. But still no signs of wear at all.
Your lifters are frosted. Yes its wear. I dont have an M8, but the lifters on my 2016 RGS were replaced at 20,000 miles with the same issue. The problem is the crap quality lifters that Harley uses.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
Stock M8 Cam/Lifter Wear
