TEAM COTTON'S PERFORMANCE TURBO BUICK ONLINE FORUMS  

Go Back   TEAM COTTON'S PERFORMANCE TURBO BUICK ONLINE FORUMS > Technical Forums > Engine Tech

Engine Tech A great place to get info related to V6 engines, cams, pistons, heads... etc.

Reply
 
Thread Tools Display Modes
  #1  
Old 02-08-2008, 02:36 PM
JCotton1's Avatar
JCotton1 JCotton1 is offline
Married Man
 
Join Date: Nov 2007
Location: Paradise
Posts: 1,434
Default Tech Tip - Flat Tappet Cam break-in

Important Camshaft Break-In Information for Flat Tappet Cams

The following information should be considered for any engine that uses a flat tappet design and should be referenced before initial start-up. Current anti-wear protection in today’s engine oils used by engine manufacturers in new car production may not be suitable for initial flat tappet break-in.

These oils are less compatible with flat-tappet designs than older formulations with better wear additives than the current SM category oils. With the advent of roller lifters, and cams, as well as roller rockers, the need for those expensive elements has diminished.

There have been numerous reports of premature flat tappet camshaft failure. This has been an issue of late and not just with one brand or type of camshaft. In almost every case, the hardness or the taper of the cam lobe is suspected, yet most of the time that is not the problem.

This growing trend is due to factors that are unrelated to camshaft manufacture or quality. Changes in today’s oil products and “advanced” internal engine design have contributed to a harsher environment for the camshaft and a potential for failure during break-in. However, there are several steps to counter this trend.

It is recommended that you use oils with higher levels of wear preventive additives that may be more desirable during flat tappet break-in. The higher a motor oil’s Total Base Number (TBN), the more effective it is in handling contaminants and reducing the corrosive effects of acids for an extended period of time. TBN is the measurement of a lubricant’s reserve alkalinity.

Melling and Melling Select Performance offer Mell-Lube, camshaft lube, (Melling p/n M-10012). Use liberal amounts when installing new camshaft and lifters.





Recommended Camshaft Break-In Procedures

In order to give your camshaft and lifters the best possible chance to make it through the first crucial moments of operation upon initial startup and provide a long, trouble-free service life, the following is recommended:

Pressure Tank System: The pressure tank system is by far the best method of making all air is purged from the oil galleys. Prelube until oil is seen at the rocker arms. Use oil that is recommended by the manufacturer, do NOT use a non-detergent oil.

Spinning The Oil Pump: Using a priming tool, turn the pump with a drill until oil is seen at the rocker arms. Priming tools are available from Melling.

Free Spinning The Engine: Remove the spark plugs and turn the engine with the starter until oil pressure is noted on the gauge (Note: not the preferred method).

Before Starting: Set the timing and be sure fuel is in the carburetor or injection before cranking. This will assure the engine starts with the least amount of cranking.

Start The Engine: After it starts, check for oil pressure and bring the rpm to 1,500-2,000. If the pressure is good, run the engine at this rpm range for 20 minutes. After this run in period, final adjustments can be made and the engine put in service.

Source: Melling Engine Parts (www.melling.com)
__________________
Jack Cotton
Cottons Performance
413-789-0531
Reply With Quote
  #2  
Old 02-08-2008, 04:42 PM
rmar rmar is offline
10 Sec GN
 
Join Date: Dec 2007
Location: Southern Illinois
Posts: 19
Default

Is it OK to coat a cam with a dry film lube.
We do it for a lot of customers but I'm the only one
with a GN. And wouldn't it assist in break in and life span.
__________________
Ronnie Martin
http://mypowdercoating.com
10 Sec GN
Will work for parts! Really I will.
Reply With Quote
  #3  
Old 02-10-2008, 06:52 AM
Fartblossom's Avatar
Fartblossom Fartblossom is offline
Inmate of the Month
 
Join Date: Nov 2007
Location: WV.
Posts: 6
Default

What do they suggest using AFTER the cam is broken in for regular oil changes?
Reply With Quote
  #4  
Old 02-11-2008, 10:42 AM
JCotton1's Avatar
JCotton1 JCotton1 is offline
Married Man
 
Join Date: Nov 2007
Location: Paradise
Posts: 1,434
Default

Quote:
Originally Posted by Fartblossom View Post
What do they suggest using AFTER the cam is broken in for regular oil changes?
the new additive... ZZDP...
__________________
Jack Cotton
Cottons Performance
413-789-0531
Reply With Quote
  #5  
Old 03-02-2009, 02:21 PM
BadAssGN BadAssGN is offline
addicted to Boost
 
Join Date: Apr 2008
Location: Near Toronto Canada
Posts: 5
Default

Might I suggest you make this a Sticky Jack..

Far too many Cams are killed due to improper breakin
__________________
1987 GN
235ci, forged pistons,steel caps, race ported irons
PT70 Ptrim 72 lb injectors, extender extreme
ARP everything, 4" intake. ported throttlebody,
Mease plenum, EGR delete race ported and welded
intake. port matched to felpro 1200s , Cotton Front mount,
F body rad, TA girdle on the Diff, Atr bar, Boxed control arms,
Stock headers and THDP, ultra high flow cat (gutted)
Hooker exhaust
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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. The time now is 09:44 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.