I found a Sportster engine for sale. What are the first things I should check or replace?

When starting with a used engine of unknown history, it's wise to at least perform a top-end refresh. This typically includes new gaskets, checking cylinder and piston tolerances, and inspecting the valve train. This gives you peace of mind and a reliable starting point.

What are the easiest ways to get more power from my stock Sportster engine?

The most common and effective "Stage 1" upgrades are improving airflow. This means installing a high-flow air cleaner and a less restrictive exhaust system. These two changes allow the engine to breathe more freely and will deliver a noticeable performance gain without ever opening up the motor itself.

I'm rebuilding my engine. How important is it to replace all the hardware?

While not always strictly necessary, it's highly recommended. Engine hardware is subject to countless heat cycles and stress, which can cause it to stretch and weaken over time. Using new, high-quality head bolts, case bolts, and other hardware ensures proper torque specs and a leak-free, reliable engine for years to come.

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SRM Engineering SRM Oil Pressure Release Valve for unit Triumph & BSA Motorcycles
11 reviews $114.90

British Standard Rod Bearings for Triumph 650 and 750 c.c. Motorcycles - Standard OEM # 70-3586
19 reviews $91.75

British Standard Metric Timing Side Crankshaft Bearing for 1972-80 Triumph 650 750 Unit Twin Motorcycles OEM # 70-3835
$87.90

British Standard Rotor Key - Triumph Unit 650 750
2 reviews $8.37

Kibblewhite Precision Machining Connecting Rod Wrist Pin Bushing for 650/750 Triumph 1963 - 1983 OEM # 70-0459
3 reviews $16.50

British Standard Sludge Tube for your 650cc 750cc Triumph Motorcycle OEM # 70-3903
6 reviews $27.52

Hawg Supply "Swirl" Engine Cover 1936-1954 Harley-Davidson Big Twins - Machined Finish
$99.99

Award Cycle Finned Timing Cover - Triumph Pre-Unit Generator Models
$749.99

Cannonball Harley Flathead Engine Crankcase 1937-1948 - Replaces OEM# 24515-37
$3,652.49

Cannonball Crankcases 1948-1952 Harley-Davidson Panhead - Replaces OEM# 24520-48
$4,265.75

Cannonball Crankcases 1941-1947 Harley-Davidson Knucklehead - Replaces OEM# 24520-41
1 review $4,295.10

Kibblewhite Precision Machining Outer Camshaft Bushing for Triumph 500 / 650 / 750 Twins OEM # E10286
1 review $17.77

British Standard Main Roller Bearing for 1966 - 1972 Triumph 650 Unit Twin Motorcycles OEM # 70-2879
13 reviews $198.47

British Standard Triumph Crankshaft Main Bearing- Right Side- OEM part# 70-1591
3 reviews $84.22

SRM Engineering SRM Oil Pressure Release Valve for pre unit Triumphs
5 reviews $120.99

British Standard Allen Sludge Trap Plug for your Triumph Motorcycle
9 reviews $22.33

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