[Healeys] re. O2 Meters

[Oudesluys]

You may cause a lot of damage if you lean out the engines. Holed 
pistons, burned exhaust valves, running hot can be the result if you 
overdo it.  As the engine becomes less efficient you will use more fuel 
instead of less.
Burned valves are usually caused by the valve clearance to tight, heavy 
load at to low revs, lean mixture and/or incorrect ignition timing.
For all these vehicles stick to about 6%CO min. idling.
Kees Oudesluijs

joe mulqueen schreef:
> I've been wondering about one of this very  gadget sold by Moss Motors.  If I
> could lean out my vehicles  (without getting too lean) would I get better fuel
> mileage and maybe extended engine life?  Seems like most old cars run too rich
> by orig design and the blame for burning valves more likely due to pinging and
> improper clearances. 
> Regards,
> Joe Mulqueen
> Santa Clara, CA
> '60 BT7 (still a sleeping project)
> '56 MGA
> '67 Landrover (very thirsty)