So this winter when I strip my bike down for paint and rewiring I was thinking of putting a bigger cam in. I've heard a lot of good things about the ev27 cam but was just wondering what everyone else's opinion here is on cams. would probably do valve springs and lifters while I'm at it to get a little more power out of the cam... I don't want to go super crazy where I'm gunna have to bore the motor out and all that stuff... to be honest I'm not even sure I'm gunna do it but I'm just trying to be prepared if I do with what I want and which one I pick.

 

The EV27 or the EV3 have been the go to for EVOs for a while. Great mid range pull on both. If the bike is stock now, you'll like the upgrade. Stock springs will work fine. It's always best to install new lifters when you install a new cam.

 

....and don't forget to replace the cam bearing with a B-138 bearing.

 

yeah I was planning on replacing all the bearings in the motor sense I'm gunna have them out anyways and they probably have never been replaced...

 

I say yes to the cam and to also plan ahead.

Some parts have been difficult to get. For example cometic SLS and MLS gaskets have been tricky to find. They seem to perform the best for these evo engines. The SLS (single layer steel) base gasket and the MLS (multi layer steel) head gaskets have a great reputation. Consider their "top end gasket kit". It includes everything but the camshaft seal.

Get your cylinder bases machined flat. They were never machined from the factory and can be a contributor to the famous cylinder base gasket leak. That and not allowing the engine to warm up a little (cylinders grow in length as they heat up which helps seal/tighten things up before you put a load on the engine).

Consider how you ride and the weight of your bike, your weight and if you carry a passenger. Heavier bikes may do better with the ev13. Take a peek at other manufacturer's besides Andrews,. Not knocking them, just mentioning there are more choices. Maybe find something in between the ev13 and the ev27. Again depends on what you want and how you ride.

The most important thing is finding a good machine shop if your getting cylinder or head work done. "I've got a guy" up here if your having troubles. He is in Commerce Township and does all the machine shop work for most of the dealers in the area. He's not cheap, but he is reasonable, and does quality work. He has been doing it for years.

 

ok I have a machinist at work that has nothing to do most of the time so I can have him do my machining... he's pretty damn good to and I wont have to pay him lol. yeah I was looking at the s and s cams the other night. my problem is I'm not very knowledgeable with the whole performance end of things, cams, gear ratios, compression all that... I can fix almost anything but I just don't have the knowledge to make the best choice... plus I haven't ridden the bike some I'm not sure how it rides yet. that's going to be a big deciding factor on if I cam it or not. I was just kind of figuring sense I'm gunna have the bike in pieces anyways I would put them in lol

 

It's a good plan. The machinist needs torque plates for the cylinders.

A far a cam selection, that's a tough call but you have time to research it and get opinions from others that have a bike similar to yours.

 

I don't have a lot of experience, but I used the EV27 cam on my recent rebuild of my '94 Electra Glide. Very happy with the result.

 

now with machining that down am I going to have to get a shorter stroke piston or anything like that?

 

how much more power did you get from the cam?