Generally the weight is removed from the back side of the flywheel by drilling holes , bolting a weight to a flywheel is friggin dangerous , can you imagine if it came off at 6000 rpm , it would land in the next county !
Fair point, I would rather not start a war with New Zealand! I do not intend to keep the cast crank in the 340 indefinitely. I am looking at options for replacing the engine internals and I will have the system neutrally balanced then.
Order up the correct flywheel and make sure you have the correct "cast crank only" balancer. McCLeod, LSC, Ram and Fidanza are good sources for the correct flywheel. Use only a qualified shop that has done the drilling of the holes in a neutral balanced (read zero balance) flywheel. I've had a bunch of customers attempt to get this done and the results were never good as the holes were either drilled in the correct location or installed on the engine incorrectly and a nasty vibration and poor idle occurred. Remember the flywheel is your "Mass" the forces the rotation once overcome by inertia.
The flywheel is from American Power train, it is pre drilled for mount holes and supposed to be neutrally balanced.
Australia imported 340 engines in the early 70's for the VJ Charger and I can't remember their exact specifications but I believe there some difference to the Dodge 340. This is the problem I was having at the engine shop while trying to purchase the correct weight. Shelby Dog sent me the attached images below, even after showing them to the guy at the shop he was still sceptical. I only posted on the forum because these guys are normally on top of things.
Found this on brewers performance, a couple hours after I got back from the engine shop. That would have saved a whole lot of hassle upfront.
http://www.brewersperformance.com/proddetail.asp?prod=FWCB007A&cat=213Cheers for the assistance.
