What if I...
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Posting Guru
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From: Eureka, Ca.
What if I...
O.K. In retrospect this doesn't seen like it was a very smart thing to do.
I used a drill to run the oil pump. That wasn't the dumpb part. I did not have the pushrods or rockers in at the time. Edelbrock says not to pre-oil the lifters because it will stop them from self adjusting. What do you guys think.
P.S. There was a reason: I wanted to see how much oil came out of the head for the rockers.
EDIT:
Also, I have had nothing but trouble with the preload. It will run then it won't. Put the drip rails back in. It ran great through the entore break in. now it won't start again. I am getting adjustble rockers. But do you think I need to do something about the lifters.
I used a drill to run the oil pump. That wasn't the dumpb part. I did not have the pushrods or rockers in at the time. Edelbrock says not to pre-oil the lifters because it will stop them from self adjusting. What do you guys think.
P.S. There was a reason: I wanted to see how much oil came out of the head for the rockers.
EDIT:
Also, I have had nothing but trouble with the preload. It will run then it won't. Put the drip rails back in. It ran great through the entore break in. now it won't start again. I am getting adjustble rockers. But do you think I need to do something about the lifters.
Elder User
Joined: Dec 2003
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From: Hoquiam, WA
I believe Rat's right. They don't want you to soak them in a pool of oil.
What cam do you have, and were you running the stock rocker assembly.
My understanding is that it isn't recommended to use the stock setup with cams over .520".
What cam do you have, and were you running the stock rocker assembly.
My understanding is that it isn't recommended to use the stock setup with cams over .520".
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From: Eureka, Ca.
Just to be clear: When I did this there was not any pushrods in the engine to keep the lifters from pumping up all the way. I assume that would be the same as pre- oiling on a bench.
Post Fiend
Joined: Feb 2001
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From: Missouri
You are on the right track Randy. The pushrods are normally in place for priming the oil system as this should be done just prior to startup. Once you install the pushrods and torque the rocker assemblies down the spring will gradually compress the lifter.
I would rotate the engine a couple times by hand to make sure all the lifters have compressed. Then prime the oil system and crank her up!
I would rotate the engine a couple times by hand to make sure all the lifters have compressed. Then prime the oil system and crank her up!
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From: Eureka, Ca.
I called Edelbrock yesterday. Explained the symtoms and how I had pre-oiled the engine without pushrods. They said the lifters probly are stuck in the top most position, and I probly wiped out the cam. They want me to pull it and check the lobes and lifters. Replace if needed
If the cam is shot I am going to a roller setup. The same one gtex is running.
If the cam is shot I am going to a roller setup. The same one gtex is running.
FE "Freakin Expensive"
Joined: Dec 2003
Posts: 6,461
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From: Smith Mountain Lake, VA
Hope Randy you find everything is ok!!
Maybe you'll get lucky and only have to replace the lifters?
But it doesnt sound good!!! Good Luck Russ!!
Maybe you'll get lucky and only have to replace the lifters?
But it doesnt sound good!!! Good Luck Russ!!
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Post Fiend
Joined: Feb 2001
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From: Missouri
I hope everything is alright too but if your lifters are wiped you will never get that cam to work right again.
I love the roller lifters but I hate the price. I would be running a solid roller for sure if I had the extra dough when I built mine. There are really no break in issues with rollers. Once the rings have seated in your engine you would be able to go right out and see what it can do.
I love the roller lifters but I hate the price. I would be running a solid roller for sure if I had the extra dough when I built mine. There are really no break in issues with rollers. Once the rings have seated in your engine you would be able to go right out and see what it can do.
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From: Eureka, Ca.
I don't like the price, but I don't like breaking in flat tappet cams anymor either. Besides, I have the exact setup Hotrod used to make 450Hp and 460tq with the Crane roller setup gtex is running in his 446 stroker. And it makes it a couple of hunderd rpm lower thanb the Edelbrock. Hmm... Trying to rationalize the expence ?
Lead Driver
Joined: Apr 2001
Posts: 6,175
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From: Texas
Greg's advice, just click it :-)
Actually, check everything over again in the ignition while waiting for the Ersons. When they arrive, install the pushrods and adjust the lifter preload as instructed and see what happens. You might turn it over by hand with the current valve-train, watching for other issues and getting a feel for things. You might even measure some of the valve movements to see if they are in the .550" range.
My guess, you have not wiped the cam lobes and you'll find the problem soon.
Actually, check everything over again in the ignition while waiting for the Ersons. When they arrive, install the pushrods and adjust the lifter preload as instructed and see what happens. You might turn it over by hand with the current valve-train, watching for other issues and getting a feel for things. You might even measure some of the valve movements to see if they are in the .550" range.
My guess, you have not wiped the cam lobes and you'll find the problem soon.
Post Fiend
Joined: Feb 2001
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From: Missouri
Keep in mind Randy that Greg chose that cam becasue he wanted to tow a boat as well as play around. You can get a bigger cam than he has and not be hurting. If I ever decided to go roller it would be a pretty serious cam!
Lead Driver
Joined: Apr 2001
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From: Texas
Sean has a good point. If you're going to spring for the roller setup, you might consider the next hydraulic roller. You can also look at the solid roller setups. I just like the idea of the hydraulic roller lifters. They seem more forgiving.
Randy, you are building this primarily for drag racing, right?
Randy, you are building this primarily for drag racing, right?
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From: Eureka, Ca.
Well, my overall plan as changed over the last couple of months. I want to drag it on the weekends. But I have also decided to make it streetable. I also am liniting the rpm to 6000. The larger roller cam wants more CR than I have. My CR is 9.68.
Elder User
Joined: Sep 2003
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Pumping up allows the lifters to assume their proper relationship with the cam and valves.
Pre-oiling pumps all the lifters up all the way, thus paving the way for cam failure.
Pre-oiling pumps all the lifters up all the way, thus paving the way for cam failure.
Last edited by Ratsmoker; Feb 29, 2004 at 07:46 AM.
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From: Eureka, Ca.
I pulled the cam today and took it down to my machinist. He said the cam and lifters look fine. I told him about the pre-oil fiasco. He had me use my vice to compress the lifters , thereby removeing the oil and resetting the self adjusting mechanisim. I put it back togheter. Checked the pre-load , too much. Waiting on the ersons now. hopefully everthinbg comes togheter o.k. I really don't want to tear it down again.