Here's a page that will tell and show how to set the timing on an EVO and what the timing marks look like too. Setting Ignition Timing on your Harley

TQ did a roller chain conversion, Andrews N21, and installed the Dobeck TFI-1040ST and did a great job with the documentation and the pictures. Roller chain conversion is PN 25284-08; $361 plus shipping and cam spacers from Zanotti's or another online discount dealer. Posted by TQ... Here is the saga of this project. I put it... Read more

When you operate the starter button and it spins over without cranking the engine or grabs and then releases without starting the engine, the starter drive is usually at fault. It operates like a one way clutch and takes a beating after numerous starts over the years. It's not a difficult job to replace but requires removal of the... Read more

The Engine Build Date Determines the Defect First let’s see who is affected by this bearing failure and who isn’t.The build date of your engine, (from Milwaukee’s massive Pilgrim Rd. plant) and NOT the assembly date, (which is done in the York Pennsylvania plant), of the motorcycle is the important piece of information to determine... Read more

For those of you that wish to keep the stock chain setup on the twin cam engines, here's a way to smooth the links so they don't eat the tensioners as fast. Click the pics below for a larger view. Twin-Cam Chain Tip - Tech - Hot Rod Bikes Magazine Twin-Cam Chain Tip How to Make Chain Tensioner Shoes Last Longer ... Read more

If you are running stock air cleaner or any air cleaner set up that routes the head breathers back into the CARB/FI throat than you are going to get some carbon build up from the oil vapor. Carbon buildup can cause pinging in just about any motor and sometimes starting problems because of a higher compression pressure. Remove the air... Read more

Detonation is a common problem on highly tuned cars. What happens when detonation occurs is that a portion of the gas, usually at a corner of the combustion chamber furthest away from the spark plug self ignites but AFTER the spark plug has fired. Detonation is a far more serious problem as it is harder to cure and potentially more damaging... Read more

Are my plugs pre-gapped from the factory? Some are but read on. A spark plug part number might fit hundreds of engines, and although the factory will typically set gap to a pre-selected setting, this gap may not be the right one for your particular engine, and may not take into account modifications that you may have performed to... Read more

A trick that I found when the EVO stator plug starts to leak a bit of oil from between the plug and the case is to get the proper size "O" ring that will fit tightly over the plug and force it down between the plug and the case just below the surface of the case with something like a popsicle stick so you don't cut the "O"... Read more

Posted by "TQ" gives a good explanation of how they operate. I started wonderin' about this when I was having all that noise I thought was valve tapping. So when I changed out the lifters in my UC this last weekend, I pulled one apart to see what was inside. The pix are below. And here is a pretty cool animation that shows a... Read more