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.
Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Doing valve guides for the first time (in my life) and determined to go back with cast iron. Seems the OEM style are out of stock most places for the sizes I need.
Here's my question - what's with the lock rings on some of the cast iron guides? Just a stop for depth?
And some (manganese bronze) have an o-ring and lip. Looks to me if they are fitted correctly in a good bore, no way they can leak.
I realize some photos don't exactly match an item for sale, and the Twin Cams that use 7mm valves do use a guide with lock ring. Don't think the lock rings on an Evo guide would matter even if they were removed, so long as the it's pressed in the correct depth. Anyone know?
just different designs by different manufactures.as far as material,we like the C630 nickle bronze here.before doing your own guides,make sure you have the proper equipment to size them (we prefer honing over reaming) & cut seats when guides are installed
Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.
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.
Valve guide types EVO
