[Healeys] Oil Pressure

[Michael MacLean]

 I got this from the archives:
I'm already reading a few contrasting suggestions here regarding your 
initial engine start up. Here is what I always do:

1. fill the cooling system with water rather than antifreeze mixture. That 
way if you find a leak in anything, all you're losing is water. proper 
antifreeze or coolant mixture can be added later.
2. make sure the engine oil has an adequate amount of ZDDP additive for the 
important initial running in of the cam lobes and cam followers
3. temporarily remove spark plugs and spin the engine on the starter motor 
until you have oil pressure showing at the gauge. That ensures the oil 
filter is full and oil has completely circulated throughout the engine. This

may take 30 to 40 seconds of spinning until the gauge needle shows pressure.
4. install spark plugs, pull out choke cable and ensure fuel is present.
5. make sure you are in a well ventilated area with plenty of fresh air.
6. start engine and watch closely for any leaks, oil or water.
7. bring the idle speed up to about 1500 to 1800 RPM and maintain this fast 
idle speed. This is very important to allow the initial bedding in of the 
cam lobes and cam followers.
8. maintain this fast idle for at least 15 minutes, checking the top hose 
and the temperature gauge to make sure that the thermostat has opened at the

correct temperature. I always use a 165 degree F thermostat. If all is well 
with your cooling system the temperature reading during this time shouldn't 
go much over the thermostat rating.
9. during this fast idle running, initial mixture settings and balances can 
be performed on the carbs, checks can be done for exhaust leaks as joints 
heat up and expand, engine paints will start initial burn off and cure, etc.
10. after the 15 minute run, bring the idle speed down to about 900 RPM and 
then gently shut off, again checking for leaks, etc.
11. THE MOST IMPORTANT: go celebrate your achievement!

Rich Chrysler

Mike MacLean


    On Sunday, May 10, 2020, 3:32:42 PM PDT, Bob Spidell <bspidell at comcast.net> wrote:  
 
  Or drunk:
 
 
 
 
 On 5/10/2020 2:50 PM, Mark Fawcett wrote:
  
 
Munted?! That's a new one for me. I had to look that one up. Ruined or destroyed. OK 
  Mark Fawcett  
  On Sun, May 10, 2020 at 2:46 PM Michael Salter <michaelsalter at gmail.com> wrote:
  
 Well that's exactly what I did on the 100R engine after the first build and the cam and most of the lifters were munted after less than 1000 miles. 
  M  
  On Sun, May 10, 2020, 5:23 PM Michael MacLean, <rrengineer.mike at att.net> wrote:
  
Why do I keep hearing on initial start up immediately get it up to approx 2000 rpm and run it 20 minutes to bed in the lifters and cam.  Old wives tale.  I have seen it done. Mike MacLean
  
  
  
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