-
09-26-2009 01:30 PM #1
Small block oil pressure problem
Hey!
I am new to this forum and glad to be here. Got a .040 over 350 SBC. Everything is brand new. Pistons, rings, bearings, etc, etc. I plastigauged all of the rod and main bearings. The crank was new and .010 under with a matching set of bearings. Everything was within specs.
The motor runs very strong. When I first start the motor, the oil pressure is around 60 psi at idle. Then I drive the car and it warms up and then the oil pressure drops to around 25 psi. And along with the pressure drop I get a lot of valve train noise from both banks and it is pissing me off to no end ! I gave the valves a second adjustment and the problem still exists. It sounds like an oil pressure problem to me. The filter is a FRAM and the oil is Castrol GTX 10-30. Looking for some advice here. Thanks in advance.
John from NC
-
Advertising
- Google Adsense
- REGISTERED USERS DO NOT SEE THIS AD
-
09-26-2009 01:41 PM #2
What oil pump??? or maybe the relief spring is weak or bad???? New cam bearings on the build too????Yesterday is history, tomorrow is a mystery, Live for Today!
Carroll Shelby
Learning must be difficult for those who already know it all!!!!
-
09-26-2009 01:51 PM #3
New Melling oil pump and new cam bearings too
-
09-26-2009 01:56 PM #4
whats the oil clearance on main and rods ? what pump stock ? spec is 001.5 to 003. on rods and about the same on mains.what brand of bearings? .i will tell you if your past 2.5 on the rods and mains with a stock pump she will be low .but valve train should not be making noise did you drill the lifter galley plugs with a030 drillIrish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
-
10-22-2009 08:36 AM #5
By any remote chance.... Did you put screw in oil restrictors in the lifter supply rails in the rear of the block?
Welcome to Club Hot Rod! The premier site for
everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more.
- » Members from all over the US and the world!
- » Help from all over the world for your questions
- » Build logs for you and all members
- » Blogs
- » Image Gallery
- » Many thousands of members and hundreds of thousands of posts!
YES! I want to register an account for free right now! p.s.: For registered members this ad will NOT show
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance