I was talking to a mechanic friend and he told me after about 100 miles to
start "getting on" my recently rebuilt engine. With the new machining
techniques engines don't need the extended run-in mileage as years ago.
If you have a new car "breaking-in" the engine isn't even mentioned anymore
although everybody I know agrees that the oil should be changed after 100
miles or so although some disagree about that. The Corvettes even use
synthetic oil from the getgo, as do several other manufacturers.
I guess the most important thing to do for a recently rebuilt engine or a
new engine is to vary engine speeds like in everyday driving (at least here
in NY) so pressure is applied to both sides of the rings to get them to seat
better and faster.
My engine rebuilder told me 400-500 miles is more than enough. I have 430
now so my pedal is hitting the metal and leavin my MGB buddies in my exhaust
fumes and noise.
Mike
----- Original Message -----
From: "Gerardo Magana" <gmagana@softcom.net>
To: "Ronnie Day" <ronday@home.com>
Cc: <datsun-roadsters@autox.team.net>
Sent: Friday, July 20, 2001 8:01 PM
Subject: Re: Solex, running rich??
> Ok, good points, but how do you explain the black liquid stuff spraying
from
> my exhaust?? What could be possibly causing this. I have a new engine and
> have driven it easy and not hard as it is going through the break in
period.
> Maybe you can convince Elayne that you need to come to Modesto to look at
> this, hehe.
> Gerardo Magana
> ----- Original Message -----
> From: Ronnie Day <ronday@home.com>
> To: Marc Sayer <marcsayer@home.com>; Roadster List
> <datsun-roadsters@autox.team.net>
> Sent: Friday, July 20, 2001 4:15 PM
> Subject: Re: Solex, running rich??
>
>
> > Good points, Marc. Now..., how do you cross relate those two aspects,
the
> > ignition and the mixture? I know the basic process of tuning the
> Solex/Weber
> > types from the idle circuits up through the RPM range, but can you go
> > through a similar, somewhat independent, process and optimize the
timing?
> Or
> > at least can most of us who don't have a chassis dyno and exhaust gas
> > analyzer in the garage? It's times like this that make the new digital
> > engine management systems attractive. Just plug in your laptop and map
the
> > fuel and ignition curves.
> >
> > BTW, I haven't forgotten the step by step Solex/Weber tuning guide that
I
> > mentioned some time ago. I'm digging around for some info I know I have
on
> > starting points for jetting, so I can include it, too. I put it in one
of
> > those places so safe now I can't find it! Doh! I need to order Hammill's
> > books on Webers and SUs anyway. Maybe I can convince Elayne I really
need
> > them now.
> >
> > Ron
> >
> > Ronnie Day
> > ronday@home.com
> > Dallas/Ft. Worth
> > '71 510 2-dr (Prepared Class Autocrosser)
> > '73 510 2-dr (Street Toy)
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