It's a sad day....

[Dave63]

I yanked the SE1 cam out of the Dyna today, and replaced it with an Andrews EV27 cam of equal lift, (.495) however, it has more duration, changing the power band to the low to mid range, and less of the mid to high ranges.

The saddest part of this is, (despite the money I spent on some of this crap-o-la) that this cam is no more special, then the cams they were sticking in Triumph Bonnevilles in the late 1960's.

We've become so used to swollowing the EPA BS we're fed, that all of a sudden, "High Performance" is just the HP and torque that bikes used to have, we just forgot about it.

Since I'm also chasing a top end noise at the same time, I ended up installing all new lifters, pushrods, larger cam gear to reduce gear lash and another inner cam bearing. I'll find out more tomorrow when I throw the lifters in, and adjust the pushrods and take it for a ride.......

[gruss]

holy cow dave.....hope all goes well for the dyna....thats a bunch of work....as you know...good luck brotha.....g

as far as that front tick........

still got mine...... and i've decided i'm gonna live with it....

[Motive]

More duration lowers the power band? Intake or Exhaust?

[chris_lacey]

Dave, buddy, I gotta disagree with you just a little bit here.

While the normally compared specs of these cams is similar to what you stated the actual cam profile is totally different and is nothing like what came with those bikes in the 60's and 70's.

The ramps are very fast which means the valve is close to wide open much more quickly and is held closer to wide open much longer. Even though the open close spec seems the same, the time at or near wide open is much longer. Instead of a triangle shape, the cam is much more egg shaped. This is what builds torque and keeps it on curve longer.

The part about EPA mandates not allowing us to run cams like this stock is totally true though.

[Dave63]

Originally Posted by Motive

More duration lowers the power band? Intake or Exhaust?

Both. The lobe timing and overlap are factors as well.

Originally Posted by chris_lacey

Dave, buddy, I gotta disagree with you just a little bit here.

While the normally compared specs of these cams is similar to what you stated the actual cam profile is totally different and is nothing like what came with those bikes in the 60's and 70's.

Specifically, I was referring to the 1965 Triumph Bonneville, Thruxton, that had high lift cams, from the factory and although limited, was available to the public. The HD cams of the late 60's were STILL better then the 1991-1999 Evo EPA grind cams.

I understand what you;re getting at though, Chris. You're right.

[rickytasker]

dave was the cam or the bearring making any noise before you repaced them i have a 96 dyna -conv at the front of the lower block has a wineing and it gets louder as i give it more gas thinking it might be the bearring or cam or both and has a small knock in the front jug just wondering if you had the same sound good luck on yours

[Dave63]

Originally Posted by rickytasker

dave was the cam or the bearring making any noise before you repaced them i have a 96 dyna -conv at the front of the lower block has a wineing and it gets louder as i give it more gas thinking it might be the bearring or cam or both and has a small knock in the front jug just wondering if you had the same sound good luck on yours

I replaced my cam bearing (and cam) about 60 days ago with an SE1 cam. Not thrilled with it and went with an EV27. You have an INA inner cam bearing that is failing. At a minimum, it'll ruin the cam, but if let go, it'll come apart and drop needle bearings into the oil pump and then it's major.

Today, I just swapped the cam, lifters and went with a different, tapered pushrod. (lighter)

You'll need a blind puller to get the cam bearing out, or the special tool, which is about $120 from HD, or $159 from Jims.

The knocking isn't indicative of a cam bearing, but the front exhaust lifter is usually the first to go, on an Evo, and noises begine from there. You could have a worn rocker shaft bushing. hard to tell, but knocking isn't one of the inner cam bearing failure signs. Whining is.....

[chardhin1999]

Originally Posted by Dave63

I yanked the SE1 cam out of the Dyna today, and replaced it with an Andrews EV27 cam of equal lift, (.495) however, it has more duration, changing the power band to the low to mid range, and less of the mid to high ranges.

The saddest part of this is, (despite the money I spent on some of this crap-o-la) that this cam is no more special, then the cams they were sticking in Triumph Bonnevilles in the late 1960's.

We've become so used to swollowing the EPA BS we're fed, that all of a sudden, "High Performance" is just the HP and torque that bikes used to have, we just forgot about it.

Since I'm also chasing a top end noise at the same time, I ended up installing all new lifters, pushrods, larger cam gear to reduce gear lash and another inner cam bearing. I'll find out more tomorrow when I throw the lifters in, and adjust the pushrods and take it for a ride.......

way above my skills.
EPA is so f'n retarded. and I am a dem. the climate problem doesnt start with vehicles. I believe there are a lot of pussy libs out there whom have eatn the globalwarming hype till were chokin on there shite. sorry guys I think we have a issue with global warming but, since they have turned it in to a marketing sceme, its lost its merit.

[chris_lacey]

Originally Posted by Dave63

You'll need a blind puller to get the cam bearing out, or the special tool, which is about $120 from HD, or $159 from Jims.

....

I use a small slide hammer puller with an expanding internal claw attachment. About $40 at Princess Auto here in Canada. I'm sure Harbourr Frieght has something similar. I use it for oil seals and bearings in blind holes.

[Dave63]

Originally Posted by chris_lacey

I use a small slide hammer puller with an expanding internal claw attachment. About $40 at Princess Auto here in Canada. I'm sure Harbourr Frieght has something similar. I use it for oil seals and bearings in blind holes.

I wasn't aware I could do that..... I ended up paying the $159 for the JIMS tool.

Damn............