Are there any worse years for Evo than 1989?
Yes, all of them and none of them. Pretty much any specific year you pick out there is some sort of issue or something worth noting. It comes down to what you want and what you are willing to put up with. Strictly based on the engnes, if I had to pick a specific year/years to stay away from I would say 1989-91.
When did the Evolution engine stop being made?
The larger Evolution engine, however, was replaced by the Twin Cam 88 engine in 1999. Before production of the big Evolution engine ceased, it was commonly found in dozens of Harley-Davidson’s 1340 displacement models over the years — most notably the Softail Springer 1340.
What was the time frame for the Evo L92?
In the 95ish time frame the rear cylinder spigot area was machined a little thin and often cracked in on stock engine. Big bore kits are out of the question for those engines. I am not sure of the exact time frame, 94 and 95 maybe 96. Also L92 and up all had caged inner cam bearings.
When did the Harley Davidson Evolution engine come out?
Harley-Davidson Evolution engine. Also available in the Sportster model beginning in 1986, it was made in the 1,100 cc (67 cu in) displacement until 1988 and is still made in the 883 cc (53.9 cu in) and 1,200 cc (73 cu in) displacements for the Harley-Davidson Sportster, replacing the ironhead Sportster engine.
The larger Evolution engine, however, was replaced by the Twin Cam 88 engine in 1999. Before production of the big Evolution engine ceased, it was commonly found in dozens of Harley-Davidson’s 1340 displacement models over the years — most notably the Softail Springer 1340.
What was the problem with my 87 Evo?
The ’87 developed a crank shaft/ main seal leak that could not be fixed. Pushed oil from the engine into the primary. Replaced the seal twice, but couldn’t fix it. Was told there were problems with the cases for that year. I have a 94 ultra, 73000k.
In the 95ish time frame the rear cylinder spigot area was machined a little thin and often cracked in on stock engine. Big bore kits are out of the question for those engines. I am not sure of the exact time frame, 94 and 95 maybe 96. Also L92 and up all had caged inner cam bearings.
Why was the EVO engine important to Harley Davidson?
Many old timers give AMF a bad rap, but the $$$’s they plowed into the EVO development paid big dividends later, saving the H-D company from “extinction” and eventually it’s success enabled the H-D family to “buy back” the company and field a whole generation of engine designs that exist today…