Harley Davidson Evolution Leak

This is a common problem not only on the Evolution Sportster but on the Big Twin Evolution engine as well.

Harley davidson evolution leak. When the company wanted a smaller engine to use in its Sportster family the Evolution 883 was the answer. This construction method had the advantage of. The Harley Davidson Service Checklist is a must for staying safe and keeping your Harley from costing you money on preventable repairs.

Harley Davidson Touring Repairing Gasket Leaks How To Repair Common Gasket Leaks You dont have to put up with that leaky gasket. In 1984 Harley-Davidson introduced the Evolution engine a replacement for its Shovelhead engine. If the compression andor leak down test show that top end needs attention you can address the issues and the only wasted time and cost was the time it took to RR just the head and the cost of the gasket.

The Harley Davidson Z90 motorcycles got famous as the ride of Kelly Leak which was played by Jackie Earle Haley in the Bad News Bears. Put her all back together and call it good. However the gasket works the same way a valve cover gasket works on an automobile acting as a seal between the rocker cover and the rocker box.

To fix the problem youll have to pull the heads and the cylinders off. Originally offered in a 1340 cc version the Evolution engine was manufactured with aluminum cylinders and heads. This article applies to the Harley.

While your bike is idling mist the area around your intake flanges with brake clean. The weeping base gaskets were not a gasketing problem at all but one of engine design. Although the Evolution was praised for its reliability keeping the engine at its operational peak required regular oil changes every 2500 miles.

An intake leak usually occurs when there is a fissure in a portion of the intake tract beyond your fuel delivery system. The information comes to us via a Vehicle Identification Number deciphering guide Harley-Davidson submitted to the US. The Harley Davidson Z90 motorcycles were actually a small series of HDs motorcycles built between the years of 1973 and 1975 by Aermacchi.