How hot does a Shovelhead engine get?
It should be hot, but not scalding hot like 250. Hell, that’s over boiling for water. Your cylheads will easily go past 250 and even 300 (over 400 for flatheads) but I doubt your oil in the tank will ever get to 250.
How many cc is a 74 Shovelhead?
The nickname “Shovelhead” was adopted shortly after it was introduced. The rest of the Shovelhead motor, essentially a carryover, had a 74 cubic-inch displacement (1208cc advertised as 1200cc), which was the same size as the Panhead it was replacing.
How tall are the Pistons on a Shovelhead 74?
The 74″s are 3 7/16″. The 74’s can be bored to 3 1/2″ but I think that the height of the cylinders is slightly shorter. This could be addressed with shims or by getting a set of 80″ jugs to match the 80″ pistons. The pistons come in “low compression” (7.5:1) and “high compression” (8:1). I have the low compression in mine and I prefer it.
What was the first year of a Harley Davidson shovelhead?
Harley-Davidson Shovelhead (1966-1983) First-year Shovelheads were essentially Panhead motors with a new top end. Redesigned cylinder heads were aluminum versions of the Ironhead Sportster heads, and gave a 10% increase in power.
How to install a Harley-Davidson 1340cc Shovelhead?
INSTALLATION INSTRUCTIONS FOR HARLEY-DAVIDSON 1340cc SHOVELHEAD ➙ ➙Top View of Piston MINIMUM RING END GAP IS .004″ FOR EVERY INCH OF BORE SIZE. Example: 3.000″ Bore = .012″ Ring End Gap Each cylinder should be deburred on top and generously chamfered on bottom for ease of piston and ring installation. Finish hon e with a 280-400 grit hone.
What kind of pistons does a Harley Davidson use?
Piston Kit ?????? Wiseco Forged Piston Kit For 1340cc Evo. Big Twin 1984-99 Harley Davidson (Fits: Harley-Davidson) 1 product ratings – Wiseco Forged Piston Kit For 1340cc Evo. Big Twin 1984-99 Harley Davidson
The 74″s are 3 7/16″. The 74’s can be bored to 3 1/2″ but I think that the height of the cylinders is slightly shorter. This could be addressed with shims or by getting a set of 80″ jugs to match the 80″ pistons. The pistons come in “low compression” (7.5:1) and “high compression” (8:1). I have the low compression in mine and I prefer it.
What kind of bike is a 1974 Shovelhead?
1974 Harley-Davidson Shovelhead , This is a 1974 Harley Davidson 1200cc Super Glide with 4 speed trans (1 up 3 down) electric start or if you choose traditional kick start. I’ve owned for almost 30 years.
What kind of engine does a Harley Shovelhead have?
74shovelhead need some cosmetic work have some extra parts. 1974 Harley Davidson Shovelhead Bobber… 77 cu.in. Shovel, Mikuni HSR42, Wiseco .040 over Pistons, Andrews “AB” cam, Sifton Pushrods, custom exhaust with power cones, 4 speed trans, 3″ BDL open primary… KICK START ONLY!!
Is there a Shovelhead engine for Nightrider performance?
At least one Shovel engine has been built using many of the ideas present here, with excellent results. As a favor to the Shovelhead fans that frequent the Nightrider Performance Site, the original text and drawings are being presented. Changes used in the current Shovelhead engine build are also noted.