[Healeys] Camshaft Question -- Now MPG

[Bob Spidell]

We've gotten that for years, esp. on flat ground with a low speed limit--Oregon, Washington, BC, Alberta, etc.--and lots 
of speed traps.  I thought I'd get better with the 3.54 rearend, but it didn't change mileage much.   This as gas 
formulations have changed drastically.  We got a tank of 100% premium (no alcohol) in OR; the gas looked and smelled 
completely different than the typical gasahol--it had a greenish tint, of all things--but I didn't notice any change in 
performance.  We only got one tank so really couldn't make a mileage comparison.

What really surprises me is oil consumption (read: leaked) has gone down over the years.   Used to lose a quart every 
1,500miles on the highway; this trip I used less than 2 qts. in 4K miles.  The PCV valve seems to help a lot and, of 
course, as Gary has pointed out the scroll slinger works better on the highway.

Bob


On 6/9/2011 9:45 PM, Alan Seigrist wrote:
> Bob -
>
> 23 mpg in a BJ8 is pretty impressive.  When I had a high compression Mk 1 motor in my BJ8, I would get 22 all the time 
> on the highway.  But then I found and rebuilt a BJ8 motor and set it up to std spec.  At first I'd get maybe 18, but 
> over time maybe the best I could do was 20.  The plane Jane BN1 I have, on the other hand, can typically do 25+.
>
> Cheers,
>
> Alan
>
>
>
>


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Bob Spidell           San Jose, CA            bspidell at comcast.net

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