Valve Train Clacking after startup....
Thread Starter
Pro
Joined: Dec 2002
Posts: 603
Likes: 0
From: 84 383 XFire Chandler, AZ
Valve Train Clacking after startup....
I have run in to a issue with the 383 in my 84 that I can figure out. I have about 5k on the motor. When I start the motor after it has sat for a few days the valve train will clack away for a second or two. The block is a full roller and I have CompCams roller rockers, lifters and pushrods. I have adjusted the valves many times and I have already replaced the lifters once. The oil pressure is fine and I use a Melling high volume pump. I am at a loss. Are there any suggestions as to what I should further investigate?
Pro
Joined: Oct 2007
Posts: 681
Likes: 0
From: Morris County, NJ
Sometimes, the brand of oil filter can make all the difference. Frams are known for their start up rattle, mine quieted down quite a bit when I went to AC DELCO.
I realize you are in AZ, but you 're not using a straight 30 oil are you?
FWIW I'd use 10-30 in your application
Steve
I realize you are in AZ, but you 're not using a straight 30 oil are you?
FWIW I'd use 10-30 in your application
Steve
Melting Slicks
Joined: Jun 1999
Posts: 2,872
Likes: 3
From: Wilmington NC
oil pressure bleed down while sitting, when ya fire it up it takes a few minutes to repressurized the lifters and in that time there is some slack like a solid lifter would have.
good points with the oil filters, if this doesn't cure it I would verifyl that your not wearing down a cam lobe prematurely and if all looks well, then it is what it is or you can perhaps get an oil accumulator for prelubing the egnine before starting.
Chris
good points with the oil filters, if this doesn't cure it I would verifyl that your not wearing down a cam lobe prematurely and if all looks well, then it is what it is or you can perhaps get an oil accumulator for prelubing the egnine before starting.
Chris
