Re: Edmunds manifold

Posted by Rusty O\'Toole On 2011/8/16 16:20:00

A twin carb manifold was usually the last step in a hop up program that would include higher compression head or milled head, hot cam, and dual exhausts.

The twin carbs by themselves will do little or nothing if the engine is not modified. A stock engine cannot take advantage of the extra breathing.

The disadvantages are the cost of a new manifold and second carb, the problems of tuning and synchronising, and lousy mileage.

Incidentally it is a mistake to hop up an old motor unless you tear it down and at least do an overhaul. An old motor may last for years if you baby it, but blow up in a month if you hop it up. I have seen this happen more than once. The bearings, crankshaft, oil pump, pistons, rings etc have to be in good shape. If your motor has more than 25000 miles since the last rebuild you would be asking for trouble.

If you are interested in a real hop up I can tell you some of the tricks to rebuild your motor for a 50% increase in power.