Did I screw something up? - 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
  #1 (permalink)  
Old 03-11-2004, 09:53 PM
79transam's Avatar
Life's 2 short 2 keep it stock
 
Join Date: Nov 2003
Location: Ohio
Age: 28
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Did I screw something up?

I read that post on break in oils... I broke my motor in with 20W50 Syntec blend. I wonder if it screwed anything up?? I'm hoping it will be okay and it only had about 200 miles on it before it went to the body shop/storage this winter. Also I didn't run it above 2,000 rpm for a half hour like the card recommended. It was more like 10 mins, then 15 minutes of idling at about 1500, then break in drive. I'm keeping it under 3500 until after 500 miles. It was only after I had a friend fire it up(that supposedly knew what he was doing) did I later find that cam card that told me to run it at a half hour above 2,000. I'll be pissed if I wiped out that new cam Maybe that part synthetic oil saved it. Should I switch oils then go back to syntec later? I was going to change it at 500 miles. Looks like you guys recommend changing sooner. It ran good.....

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-11-2004, 10:14 PM
killerformula's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Carburetor
Last journal entry: Clean up
Last photo:
Join Date: Oct 2003
Location: Northeast
Age: 34
Posts: 3,485
Wiki Edits: 3

Thanks: 13
Thanked 27 Times in 18 Posts
If something was wrong you'd know by now. The only problem you would run into would be clogging the oil pump, the break in you described isn't perfect but I'm sure it did the job just fine. Some people don't break them in at all and get away with it, your motor is fine, I'm sure.

BTW, you sure you need 20-50?

K
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-11-2004, 10:23 PM
Jared's Avatar
Member
 
Last photo:
Join Date: Feb 2003
Location: Fargo, ND
Age: 29
Posts: 478
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
the cam would have been noticeably bad by now if it was going to go bad, syn oil just doesn't let the metal wear into its self like it should, such as the rings and lifters and such. id switch it back out and run reg oil for first few thousand miles. id also do what the cam card says again with the new oil just in case. cheaper that way.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-11-2004, 11:24 PM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,657
Wiki Edits: 0

Thanks: 15
Thanked 59 Times in 56 Posts
From your post, if I read it correctly, you didn`t change your oil after the break in, always change the oil immediately after the break in, if you leave the oil in for 500 miles, then the particles of the break in and the loose grit get right past the filter since the bypass kicks in at around 17 psi, and the particles make there way to the bearings chewing them up, already seen this in one case of a rebuild I did for a friend of mine, he neglected to change the oil, and well, the rest is already known. when you go back to basic oil, I would run it again for 15 minutes alternating it at 1800 to 2000 RPM`s, just to be sure the cam broke in properly, synthetic oil could have caused it not to set a wear pattern, even so it may have already have, it`s still cheap insurance, better safe than sorry.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-12-2004, 08:22 AM
machineman's Avatar
New Member
 
Join Date: Mar 2004
Location: Baltimore, MD
Age: 45
Posts: 18
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I would think that you may not have hurt anything but I would recommend getting the synthetic out of there and go back to a conventional oil. By the way, is 20W-50 what your engine builder recommended? That seems pretty heavy for a break in unless it has really "fat" bearing clearances.

Anyhow, that break in oil should be out after the first half-hour of running time at approx 2000 RPM.

Just as a side note, a while back on my own truck engine, I put synthetic in right after the half-hour break-in procedure and I did have some ring sealing issues. It went away after switching back to regular oil. That was an experiment that did not go well but it was mine. I don't recommend synthetic till you hit around 2000 miles or so.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-12-2004, 04:28 PM
79transam's Avatar
Life's 2 short 2 keep it stock
 
Join Date: Nov 2003
Location: Ohio
Age: 28
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
When I bought the thing all the guy ran was mobil1 15W50 supposedly. Upon changing the cam I inspected the bearings, which were shot from what looks like running it low on oil/hard/improper break in. It only had 5,000 miles on it so I kept the rings since they were in excellent shape. Everything else was redone: cam, bearings, headwork ect. I figured I'd buy myself some extra protection with 20W50 part synthetic and its cheaper than mobil 1. Its a mid 70's 350 +.030. Should I run a different oil? Its only run in the summer and warm weather so I figured it'd be okay. Also it was a tight motor as far as clearances, .015 on the plastigauge the whole way around. I also need to take off that FRAM filter!! Found out not too long ago they are crap and wix/napa filters are best. What should I finish break in with? Just a normal HD30W or something lighter?
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 03-12-2004, 04:50 PM
Member
 
Join Date: Aug 2003
Location: calgary canada
Posts: 727
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I'm not a believer in thick oils at all. I run all my engines on 5w30 and 0w30. Assuming your clearances are reasonably tight just use a 30 weight and go back till convertional till after the break in
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 03-15-2004, 04:14 PM
machineman's Avatar
New Member
 
Join Date: Mar 2004
Location: Baltimore, MD
Age: 45
Posts: 18
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
A motor that tight should really run no more than a 10W-30 oil.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 03-15-2004, 10:11 PM
Ghetto Jet's Avatar
current hot rod: CTS-V
 

Last journal entry: Lets Get Started With the Improvements
Last photo:
Join Date: Nov 2003
Location: Pennsylvania
Age: 28
Posts: 1,728
Wiki Edits: 0

Thanks: 10
Thanked 5 Times in 5 Posts
Agreed, 10W30. Esspecially with that cold Ohio weather.


Mike
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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

Posting Rules
You may post new threads
You may 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



All times are GMT -6. The time now is 04:58 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.