Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Chevy 383 Roller Build (cont.....)
View Single Post
  #89 (permalink)  
Old 02-17-2013, 08:18 PM
vinniekq2's Avatar
vinniekq2 vinniekq2 is online now
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 7,803
Wiki Edits: 0

Thanks: 312
Thanked 749 Times in 720 Posts
oil pressure at idle,,,

Quote:
Originally Posted by barry425 View Post
Small Block Chevys seem to run okay as long as they have 40 psi at hot idle. I had a machinist make a mistake on a crank once, and the hot idle was only 25. It went downhill little by little, and by the end of the month only had 10 psi at hot idle. I gave the machinist Hell over that and also gave him some not-so-good PR. Some speed shops took my word for it and took their business elsewhere after that.
.
Small Block Mopars like higher oil pressure, such as 60-80 psi at hot idle. It is because of the way the oil passages route inside the block. There is a fix that involves putting an oil bypass line in the valley, but I don't like doing that. If anything breaks, you can't see it until the engine goes south on you. I still remember the external copper top end oil line on the old "Y" block Fords that would work harden and break. Oil went everywhere. What a Mickey-Mouse outfit that was. "Have you driven a Ford lately?" lol
how is that possible? I would think that on a test fit that the crank was measured? The mistake on the crank ,,,how did that get missed by the guy assembling?
Reply With Quote