Re: Engine startup and break in (long)

[Jon Pike <jhpike@xxxxxxx>]

> >Like the breaking in new cams..  I've never heard about that.  
>  
> This is for new cams or followers, if you're reusing the old stuff in their 
> original positions, you can skip this step. 
> The new cams and followers need to get used to one another (that's a 
> technical term) so one usually starts the engine and keeps it at about 1500-2000 rpm's 
> for about 20 minutes. The "high idle" speed is because the engine oiling 
> system isn't efficient enough for this purpose at regular idle speed (about 900 
> rpm). Use plenty of cam lube before the engine is started.
>  
Not an issue for me, since the cam's and followers are not new.   I can 
understand that such a run could have that desired effect.  But,  I also 
have heard from several sources that the one guaranteed way to get your 
rings and liners to glaze and then forever burn oil,  is to start the 
new engine and let it idle (slow idle?) without load for a length of time. 
I have no idea how accurate that information is. 
Hmmm... went to the Hastings ring company site, which I remembered to 
have a lot of tech info: http://www.hastingsmfg.com/service_tips.htm  
and they mention a procedure for ring seating that has a similar 
sounding startup procedure..  with a fast idle to warm up.  They then 
have you go to driving it at a moderate speed with short cycles under 
full throttle to put load on the pistons and rings. 
So it would seem that the fast idle isn't a bad thing.

I'd appriciate info from any pro builders out there on the subject..

Jon
77 Spider
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