Dedicated Subsystem WorkbenchPlatform Gen: 1984–1999

1998 Harley Davidson Evolution 80ci (Dyna / Softail / FXR / Touring) Valve Clearance Specs & Shim Calculator

Cold valve clearance specs for 1998 Harley Davidson Evolution 80ci (Dyna / Softail / FXR / Touring): intake mm, exhaust mm, inspection intervals and replacement shim calculator.

Technical PassportOEM VERIFIED

Engine

1340cc

Cooling

Air-Cooled

Final Drive

Belt Drive

Engine Oil

2.84 L (3.00 US qt)

Spark Plug

HD 5R6A / Champion RN12YC / NGK BPR5ES

Front Tire

MT90B16 (Touring) / 100/90-19 (Dyna) / MH90-21 (FXST Softail)

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Gen 1984–1999

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 1984 through 1999.

Select Model Year:(Active: 1998)
16 Production Years (1984–1999)

1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999

Suggested Items4 Verified Workshop Consumables Available for this Job

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Factory Valve Clearance & Shim Calculator

OEM Workshop Tolerances

Cylinder head valve lash specifications, timing TDC mark alignments, and interactive replacement shim calculation engine.

Adjustment Mechanism: Hydraulic Lifters (Zero Valve Lash)

Active Valve Range (INTAKE)

0.00 mm (Zero Lash / Hydraulic Preload 0.100 in / 2.54 mm)

0.000 in (Hydraulic Self-Adjusting)

Nominal Mid-Spec Target

0.15 mm

Ideal cold lash assembly setting

Shim Diameter / Tappet

Hydraulic Lifters (Zero Valve Lash)

Bucket-and-shim interface

Measurement Condition

Cold Engine (≤ 35°C / 95°F)

TDC compression stroke only

Interactive Shim Sizing Calculation Engine: New Shim = Current Shim + (Measured Clearance - Target Clearance)

1. Feeler Gauge Measured Clearance (mm)

Factory intake tolerance: 0.00 mm (Zero Lash / Hydraulic Preload 0.100 in / 2.54 mm)

2. Currently Installed Shim (mm)

Measured with micrometer or read laser-etched face

TDC Crankshaft Timing Index

Crankcase timing hole TDC mark aligned; pinion gear punch dot aligned with single camshaft gear punch dot.

Feeler Gauge Technique

Hydraulic roller lifters; zero lash feeler gauge. Pushrod preload calibrated by turn count on adjustable pushrods.

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 1998 Harley Davidson Evolution 80ci (Dyna / Softail / FXR / Touring) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

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Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

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Subsystem Guide/fluids

Fluids & Capacities

Oil: 2.84 L (3.00 US qt) • Coolant: N/A • Brake: DOT 5 Silicone-Based (Purple) - strictly NEVER mix DOT 5 with glycol DOT 4

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Subsystem Guide/fuses-relays

Fuses & Relays

Main: 30A Main Thermal Circuit Breaker • Location: N/A

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Subsystem Guide/compression

Compression & Leakdown

Ratio: 8.5:1 • Std: 140-160 PSI • Limit: 120 PSI

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Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

Idle: N/A • Rail Pressure: N/A • Vacuum: N/A

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Subsystem Guide/electrical

Charging & Battery

Battery: YTX20L-BS (Dyna/Softail) / Y60-N24AL-B (Touring) • CCA: 310 • Regulated: 13.8 - 14.4 V DC at 3,000 RPM

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Subsystem Guide/tires

Tires & Gearing

Front: MT90B16 (Touring) / 100/90-19 (Dyna) / MH90-21 (FXST Softail) • Rear: MT90B16 or 130/90B16

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Subsystem Guide/suspension

Suspension & Sag

Front Travel: 120 mm • Rear Travel: 76 mm

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Subsystem Guide/maintenance

Maintenance Schedule

Oil: Every 2,500 - 5,000 mi (4,000 - 8,000 km) mi • Valves: N/A • Plugs: Every 5,000 mi (8,000 km) mi

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