Get Your Motorcycles Ready for the Spring

Published on February 12, 2025
Duration: 5:33

This video details the process and components involved in rebuilding Harley-Davidson motorcycle engines from 1936-1999, including Knuckleheads, Panheads, Shovelheads, and Sportsters. It covers new piston installation with specific clearance measurements, rocker arm resurfacing and bushing replacement, lower end assembly with Timken bearings and roller bearings, and head work involving Amco guides, stainless steel valves, and various valve guide materials. Options for upgraded components like high-lift springs, dual spark plugs, and shaved flywheels for faster revving are also discussed, along with the conversion from hydraulic to solid lifters for performance camshafts.

Quick Summary

Dragonman's offers comprehensive rebuild services for 1936-1999 Harley-Davidson Knucklehead, Panhead, Shovelhead, and Sportster engines. The basic 'rebuild your own motor' service costs $1,200, with options for rocker arm rebuilding ($85 extra) and performance upgrades like shaved flywheels and camshaft conversions.

Chapters

  1. 00:00Introduction to Engine Rebuilds
  2. 00:08Engine Models Covered
  3. 00:16Piston and Clearance Specs
  4. 00:37Rocker Arm Rebuild Process
  5. 00:45Lower End Assembly Components
  6. 01:24Cylinder Head Components
  7. 01:39Piston Rings and Optional Upgrades
  8. 01:57Flywheel Balancing and Benefits
  9. 02:22Gasket Set and Support
  10. 02:33Pricing for Rebuild Your Own Motor
  11. 02:47Completed Engine Example and Pricing
  12. 03:07High Lift Camshaft and Duration
  13. 03:13Camshaft Power Bands
  14. 03:33Hydraulic vs. Solid Lifters
  15. 03:48Solid Lifter Conversion
  16. 03:54Solid Push Rods and Installation
  17. 04:28Customer Note Example
  18. 04:37Engine Noise and Rod Failure Risk
  19. 04:51Connecting Rod to Flywheel Clearance Danger
  20. 05:05Contact Information and Shipping Address
  21. 05:21Current Wait Times
  22. 05:27Closing Remarks

Frequently Asked Questions

What Harley-Davidson engine models does Dragonman's rebuild?

Dragonman's offers rebuild services for 1936-1999 Harley-Davidson Knucklehead, Panhead, Shovelhead, and Sportster engines. They handle various engine types from these classic eras.

What is the cost for a basic engine rebuild service?

A basic 'rebuild your own motor' service from Dragonman's is priced at $1,200. This covers the core engine rebuilding process for your provided components.

What are the benefits of shaving flywheels on a Harley engine?

Shaving flywheels can reduce their weight by about 2-2.5 lbs, which helps the engine rev up faster, similar to a stroker motor, without compromising longevity when used with appropriate pistons.

What is the recommended clearance for new pistons during a rebuild?

During a rebuild, new pistons are typically bored to the next size with a clearance of 1.5 to 2.0 thousandths of an inch to ensure proper fit and operation within the cylinder.

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