604 DAVISON STREET, RR3 WOLFVILLE, NOVA SCOTIA, CANADA, B4P 2R3
& 146 PORTER STREET, HACKENSACK, NJ, 07601
IMPORTERS AND DISTRIBUTORS OF PARTS AND ACCESSORIES
FOR CLASSIC TRIUMPH, BSA AND NORTON MOTORCYCLES
HELPING TO KEEP BRITISH MOTORCYCLES ON THE ROAD SINCE 1977!
web site: www.britcycle.com
461-01/A AERCO TRIUMPH 750
BIG BORE CYLINDER AND PISTON SET FOR 650 TWINS
Thank you for choosing our 750 conversion for your Triumph 650. Careful assembly and running in will greatly extend
the life of your investment. Assembly is straight forward and well within the scope of the average British cycle enthusiast.
There are a few pointers experience has taught us, and these we would like to share with you. Please read these
directions completely before using this product. If you feel you are unable to install this product properly, please contact
a qualified British motorcycle dealer for installation. If you are unable to locate a dealer in your area please call us for a
This unit is manufactured to the highest standard. It is intended for use on street motorcycles and not intended for
competition. A factory service manual will be most helpful during this procedure.
It is highly recommended that the oil be changed and special â€œrunning in oilâ€ be used with your new cylinder kit.
Step 1. Unpack your big bore kit and inspect the contents. There should be the following:
1. Cylinder x l
2. piston with wristpin x 2
3. Hepolite piston ring set x l
4. Special big bore head gasket
Step 2. Thoroughly wash the cylinder bores with soap and water. Do not use solvent! Dry bores with air or a lint free
towel and let completely air dry. This step is most important and will greatly extend the life of the pistons.
Step 3. Following the procedure outlined in your service manual, drain the fuel tank, remove the exhaust system, fuel
tank and carburetors. Have a catch basin handy to capture any fuel that may spill from the carburetors, as fue