How can you say that when you don't know my background????
It’s easy. When you blame a cam lobe for something that isn’t true, you are pedaling BULLSHIT.
If the valve is bouncing, it’s not the lobes fault. Are you so silly to to think that say, from .100 lift to the base circle the cam designer just drops the valve at maximum acceleration? You can have a very fast closing valve and still not have the lash ramp slam the valve shut.
In fact, I have NEVER seen such a lobe. Not even on the stuff that was netting .900 plus lift. Ever. If you have valve train control issues, it’s always the usual suspects. Heavy valves. Wrong spring rate. Wrong spring pressure on the seat. Flexible pushrods (this is a big one, as most guys still think a 5/16 thin wall pushrod works for everything, but it doesn’t and guys fail to use the biggest, thickest pushrod they can get) that bend like a noodle. I’ve pulled junk down that had .080 even .100 clearance between the pushrod and the head and you can see witness marks of them rubbing, and the pushrod is still straight.
Again, the issue isn’t the lobe. It gets blamed because it’s easy, but it’s incorrect.
Again, all this nonsense started when the big springs came out. What was that...1984??? When you called a cam grinder and said I’m seeing evidence that I don’t have enough spring load and I’m going to up it from 180 on the seat to 260, they’d claim any cam that took that spring load was junk. I had a Crower cam and was killing lifters. It got better every time I upped the spring load. Crower was concerned but said it it helps them you are going the right way. My dad wants sold. He was of the school the cam was junk. So I called every cam grinder I could think of and every single one of them assured me if I bought their cam, I could run 180 on the seat and still shift at 8200. Every one of them said the Crower cam was a parts breaker. And, they all either didn’t know ****, or they were lying to sell a cam.
Either way, like a dumbass, I fixed everything except what was really failing. All the hero’s claimed my ductile iron rockers were junk. Because I’d fail a rocker, bend the pushrod, kill the lifter and knock the lobe down and fill the engine with all manner of trash.
So I bought Crane rockers. Now I was bending pushrods and killing the lifters.
So I bought Smith Brothers 7/16 .120 wall pushrods. I still have them. Never bent one of those seal clubbers. But I was STILL killing lifters. So, I was going to quit. No one had any answers nd I was tired of adding to the wall of shame in my shop. It was covered with broken parts because to this day, I doubt anyone who says they were shifting at 8000 plus back in the day and ran the same junk I couldn’t.
One morning before work, I decided I’d give it one more try, and I called Jesel. Got Wayne Jesel himself on the phone. I was going to order their $100 dollar EACH lifters and give them a shot, because that’s all that was left that was failing. Of course, Crane said their lifters weren’t the issue, it was my parts breaking, junk cam. So like I said, I have Wayne Jesel on the phone.
We go over my combo and all the details and I tell him to send me a set of his lifters. He said NO. I said why not. He said because that is massive overkill. So I said them pick me a cam that won’t kill my parts. He said there is NO SUCH THING as a cam that breaks parts. Now I getting pissed. And since I’m throwing everyone under the bus, I will name names.
Jesel told me to call Crane, and get Chase Knight on the phone. And you tell him that I said his junk lifters are failing, and HIS people should have told me that a long time ago. You tell him I said that, and if he has a problem, you call me back and I’ll deal with it. So I said what lifters? He says you should have been running their Pro Series lifters from the very beginning. They shouldn’t even make that lifter with the .750 wheel for a Chrysler.
I called Chase Knight and told him exactly what Jesel said. And that day, I had a set of Pro Series lifters in the overnight mail for less than half of what they cost. And he sent a call that to get that junk set of lifters back. And guess what? Zero lifter failures. And I used the when I was shifting at 9000 for a short time. But it was always 8500-8800 and never a failure.
So I didn’t make this up. I lived it. I learned from MY experience and Wayne Jesel. If you want to argue with Wayne Jesel then knock yourself out. You’ll continue to sound ignorant.
