Harley Davidson Evolution Engine Problems

This problem is usually caused by the timing belt slipping which results in a loud rattling noise when the engine is running.

Harley davidson evolution engine problems. As of 2011 the Sportster remains the only model from the Harley-Davidson that still employs the Evolution engine in both 883-cc and 1200-cc variants. What are the changes and their purposes. The Evolution engines not only carried forward Bill Harleys original ideas but they also solved the problems that had beset the earlier Harley-Davidson engines problems caused by heat cooling gasket sealing and oil leaks.

There are things in the auto industry most take for granted. If you have any problems remove the screw for the tappet screen STOP yell back and some pointers will be give DO not strip it or over tighten it. The actual design itself is designed poorly.

Leaned a few tricks over the years to get one out thats to tight. Harley Evolution Engine 1984 - 1999 Overview FMH Video Fix My Hog. Some of the exhaust bolts can also rattle free due to their design.

I had many bikes before it. Japanese Italian and German. It is lockated near your oil pump on the rear of the right case.

The Evolution engine is an air-cooled 45-degree V-twin engine manufactured from 1984 by Harley-Davidson for the companys motorcycles. In my shop now is an EVO engine with a custom cam of just 500 lift it would have been most likely fine except extra long valve springs were installed that coil bound to the point of lifting the rocker boxes up and causing oil leaking on the rocker boxes. A 10 micron filter can cause oil to carry over in an Evo engine before it blows the bypass spring.

DIY Harley motor repair. Although the Harley-Davidson Sportster is fairly reliable there are a few issues worth noting. As you might suspect as Only two model year FXRs 1982-1983 were equipped with the Shovelhead engine subsequent models 1984-1994 were powered by the Evolution motor.