Sbc very low oil pressure. Use thicker oil? - Page 3 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #31 (permalink)  
Old 01-30-2013, 01:31 PM
bigdog7373's Avatar
Of course it's fast
 
Last photo:
Join Date: May 2010
Location: florida
Posts: 2,661
Wiki Edits: 0

Thanks: 13
Thanked 48 Times in 48 Posts
Alright so I put 4qts 10w40 and 1qt 20w50, then my zinc additive which was surprizingly thick.
Cold idle neutral: 50psi, in gear 45psi
Hot idle neutral 10psi, in gear 6psi
Crusing at 50mph 23-26psi.
Not too bad. Obviously there is something wrong but at least I can drive it without worry now.
I'm thinking in the near future I will pull the engine and trans and sell them. Ive wanted to do an ls swap for a while plus I have a 4speed muncie that I'm dying to put in.
Reply With Quote
  #32 (permalink)  
Old 01-31-2013, 05:10 AM
Richiehd's Avatar
JS-70
 
Last photo:
Join Date: Jun 2011
Location: Jupiter FL
Posts: 658
Wiki Edits: 0

Thanks: 73
Thanked 17 Times in 17 Posts
Why are you mixing oil weights? You live in Florida, you have a motor that probably has a little extra clearance in the bearings. Use a 20-50W Brad Penn RACE oil if you need the ZDDP. or Valvoline VR1.
Reply With Quote
  #33 (permalink)  
Old 01-31-2013, 06:17 AM
bigdog7373's Avatar
Of course it's fast
 
Last photo:
Join Date: May 2010
Location: florida
Posts: 2,661
Wiki Edits: 0

Thanks: 13
Thanked 48 Times in 48 Posts
Im pretty sure 5qts of 20w50 is going to be wayyy to thick. That's what we use for hydraulic fliud in our commercial mowers and the stuff is very thick.
Reply With Quote
  #34 (permalink)  
Old 01-31-2013, 08:40 AM
Richiehd's Avatar
JS-70
 
Last photo:
Join Date: Jun 2011
Location: Jupiter FL
Posts: 658
Wiki Edits: 0

Thanks: 73
Thanked 17 Times in 17 Posts
Quote:
Originally Posted by bigdog7373 View Post
Im pretty sure 5qts of 20w50 is going to be wayyy to thick. That's what we use for hydraulic fliud in our commercial mowers and the stuff is very thick.
Whatever.....read my last post!
Reply With Quote
  #35 (permalink)  
Old 01-31-2013, 08:54 AM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 27
Posts: 7,068
Wiki Edits: 0

Thanks: 7
Thanked 90 Times in 86 Posts
Quote:
Originally Posted by Richiehd View Post
Why are you mixing oil weights? You live in Florida, you have a motor that probably has a little extra clearance in the bearings. Use a 20-50W Brad Penn RACE oil if you need the ZDDP. or Valvoline VR1.
I agree, no need to mix a magical concoction, but I'd go with 5W40 Mobil 1 unless you have an aggressive flat tappet cam. Also, think about changing your pump if you didn't when you rebuilt the engine, the pumps can wear a lot depending on the oil/filter you used in the engines prior service life.
Reply With Quote
  #36 (permalink)  
Old 01-31-2013, 08:59 AM
lg1969's Avatar
Google "Tunnel Ram 406"
 
Last photo:
Join Date: Oct 2007
Location: Bohemia, L.I.N.Y.
Age: 63
Posts: 982
Wiki Edits: 0

Thanks: 1
Thanked 11 Times in 11 Posts
Before you start taking it apart try to fine another distributor and replace it.
Reply With Quote

Recent Engine posts with photos


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Low oil pressure on SBC lg1969 Engine 30 05-30-2013 05:00 PM
Low oil pressure sbc 350 Lightspeed Engine 2 10-16-2011 01:25 PM
sbc low oil pressure 1967chevelle454 Engine 5 02-27-2009 06:02 PM
SBC HVP oil pump, low pressure tnsmith10 Engine 14 01-12-2009 05:28 PM
305 sbc with low oil pressure??? Help 91olds305 Engine 17 10-14-2002 06:57 PM


All times are GMT -6. The time now is 02:11 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.