The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-22-2009, 06:29 PM   #1
John Pasinski
Registered User
 
John Pasinski's Avatar
 
Join Date: Aug 2007
Location: orlando
Posts: 456
Rocker oil pressure

I just had my 402 engine overhauled (well pretty much). (1) new piston (cracked). Reman 402 crank kit, all rings, all lifters, new oil pump. The engine developed a lifter clack (driver side). I pulled the valve cover, and #1 intake rocker, and #5 intake rocker are not receiving oil through the push rods. I checked the push rods for blockage, both clean and clear. I haven't checked the pass. side. The others are kinda drooling the oil up through the push rods EXCEPT for the #3 exhaust rocker that one is peeing out the oil onto the inner fender. This is of course while the engine is idling @ 650 RPM (standard trans.). What should be proper amount of oil be at the rockers at an idle? Does this mean I have at least (2) defective lifters? I appoligize for the disertation, but I have to figure this out without help as I am all alone. No old timers around to help. Thanks...............
John Pasinski is offline   Reply With Quote
Old 09-22-2009, 06:49 PM   #2
mclairmo
Registered User
 
Join Date: Jan 2006
Location: Take Off
Posts: 1,908
Re: Rocker oil pressure

I remember that they (if not clipped) will squirt far enough to go past the engine and get on the exhaust manifolds, etc. Are you sure the oil pump is ok? Was the block properly cleaned? All oil passages feeding lifters cleaned well? What weight oil are you running?
mclairmo is offline   Reply With Quote
Old 09-22-2009, 07:01 PM   #3
John Pasinski
Registered User
 
John Pasinski's Avatar
 
Join Date: Aug 2007
Location: orlando
Posts: 456
Re: Rocker oil pressure

The engine block was cleaned when it was disassembled. I'm running 5W30 oil because everythine's so new. Pump is new. ALL parts were purchased through NAPA. Is it possible these are the incorrect lifters for a 402? Maybe there are others that will fit but not be able to pump up or line up with the oil galleries. I'm just throwing out guesses. I really have no idea what may be causing this.
John Pasinski is offline   Reply With Quote
Old 09-22-2009, 09:49 PM   #4
71 super
Registered User
 
71 super's Avatar
 
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,079
Re: Rocker oil pressure

My 402 has had a slight tick in it since it was rebuilt. I replaced cam and lifters twice thinking cam/lifter issues and still have not cured the problem.
__________________
67 blue step side- bb
68 gold and white swb cst anniversary
68 custom swb hot rod Ls swap
69 swb cst 6 cylinder/ overdrive
69 black/black cst bb swb
70 orange and white cst Canada built truck swb bb
71 black and white super swb bb
71 red and white super swb
72 green and white super swb 4x4
62 nova wagon 400 series Ls swapped
68 Camaro 327/4 speed- 1 owner, original paint
66 Volkswagen bettle
69 auto stick Volkswagen Beetle
71 super is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:12 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com