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.
I doubt they ever used pure aluminum ever. It's too soft. 356 aluminum which is commonly used for casting is only 0.2% iron with silicon and manganese.. 319 does have 1% The castings still look like aluminum.
an aluminum steel alloy?.. i didnt know such an alloy was possible but im not a metallurgist so... interesting.
.. if it walks like an aluminum head, & talks like an aluminum head what else would you call it besides an ironhead?. lol. i think the lingo that lots of riders use to describe the two is 'shovelhead'.. ive heard it used to describe iron xl's often..
". ive heard it used to describe iron xl's often.."
Only by the ignorant!!!!............And there are many of them that show up at the bar in new leathers and boots trying to impress. Used to love watching them leave the bar, ride around to the back parking lot, then load up on their trailers.
The old castings had so much impurity in them I've actually seen rust specs on some cases & heads for the 40's & early 50's stuff that had been sitting for years. Also why they coated the inside of the engine & trans case with the red based sealer back then, so porous they'd weep oil.
Last edited by TwiZted Biker; Feb 11, 2022 at 11:58 AM.
I've repaired the left front motor mount on a couple panheads and one knuckle using a 180 Lincoln AC welder with HF start and Tig torch. In order to get enough heat into the cases, they need too be heated with a rose bud. When doing do, the case will ooze oil out of the pores and burn.. IIRC the left front breaks when top mount comes loose.. The buildup process is a PITA as all kinds of crap comes bubbling up.
I've repaired the left front motor mount on a couple panheads and one knuckle using a 180 Lincoln AC welder with HF start and Tig torch. In order to get enough heat into the cases, they need too be heated with a rose bud. When doing do, the case will ooze oil out of the pores and burn.. IIRC the left front breaks when top mount comes loose.. The buildup process is a PITA as all kinds of crap comes bubbling up.
Yup done a few old trans cases & inner primaries, same issues. Got fixture plates around here somewhere I made for the mounts and the kicker cover side to hold things square during the repair. Used to have a 35 gal drum 1/2 full with methyl ethyl ketone I'd soak the old stuff in for a few days to leech the oil out, worked rather well. EPA killed that long ago. Then there was an auto engine shop that had a power hot soak I'd use occasionally till they closed.
Was looking at my torch bottles the other day, gotta be 10+ years since I used them last. Gonna have to go through all this stuff and start getting rid of it, not doing this kinda work anymore and I'm not a youngster these days.
I used to daydream about owning a nice example of each of my favorite bikes; Flathead, Knucklehead, Panhead, Shovelhead, Gimmehead.... (Posted in case 2 or 3 people on the planet never saw the t-shirt.)
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.