Tuning tips & Tricks

THE FOUR CYCLE ENGINE Indeed, cam degreeing is simple, but first let’s make sure you have a good understanding... read more

This article will touch on motor vehicle fuels and how changes effect our vintage motorcycles. Technical Report on Oxygenated (Ethanol... read more

This size list is for reference only. Cylinders are bored based off the actual piston measurement using a micrometer and... read more

If you have owned a British motorcycle for any time you will be familiar with the term “wet sumping”. This... read more

Motorcycle Oil and Clutch Friction: Q: What oil do you recommend for my primary chain case? A: We recommend using ... read more

We often get questions about Triumph cam gears and which marks to line up during engine assembly. To put it... read more

Frequently asked piston questions: What is the recommended cylinder to piston clearance? For cast aluminium pistons we recommend .0035 –... read more

Lucas Energy Transfer (ET) ignition unraveled Lucas AC or Energy transfer ignition was used on many competition motorcycles among them... read more

The neophytes guide to Triumph motorcycle Tappet Blocks, and their applications made easier. The Triumph twin cylinder engine began life... read more

Click Here to download JRC Carb Tuning Guide Click Here to Order JRC Carb Spares INSTALLATION GUIDE FOR THE JRC... read more

Click here to download the PDF Needle, needle jets, and the Amal Concentric The Amal concentric carburetor was introduced as... read more