[AT] tractor hauling truck

[Stephen Offiler]

I had a buddy with a Vega when we were teenagers.  I believe it burned
something like a quart of oil every 100-200 miles.  The sleeveless design
was very interesting for that era.  But it seems that it was rushed to
production and lacked development.  Seems the real problem was that engine
was prone to overheating, and also prone to warping when it overheated,
creating piston scuffing, and undermining the whole linerless system.

The concept is alive and well in the modern day, known as "Alusil".  The
Germans really put a lot of development into it and met with great success:
https://en.wikipedia.org/wiki/Alusil

SO


On Mon, Feb 24, 2020 at 1:02 AM Indiana Robinson <robinson46176 at gmail.com>
wrote:

> This reminds me of an early 1970's Chevy Vega I once picked up as a
> "spare" car. It had more miles than care when I bought it. It was an
> aluminum block with the cylinders etched to leave a layer of silicon as a
> hard wear layer. "It ran..." It was an early attempt to eliminate sleeve
> liners.  I never liked the thing at all and didn't keep it very long.
> Here is a page that gives some history:
> https://en.wikipedia.org/wiki/Chevrolet_2300_engine
>
> On Sun, Feb 23, 2020 at 6:15 PM Stephen Offiler <soffiler at gmail.com>
> wrote:
>
>> Sprayed liners are far from new.  BMW built motorcycle engines with this
>> technology back in the 1980's and riders have been know to put 300,000 and
>> more miles on those bikes.  There was a time BMW car engines used a similar
>> technology and developed a bad reputation.  It was actually due to high
>> sulfur fuel, and for one thing our fuel in the USA now has far lower sulfur
>> than back then, and for another thing the whole industry moved to a
>> different alloy that is not susceptible.
>>
>> Does anyone care what percentage of the fasteners are metric?  I've been
>> wrenching domestic vehicles that have a mix of SAE and metric ever since we
>> tried the metric system in the USA back in the 80's.  It's hardly an issue
>> worth mention.
>>
>> And several car companies in recent years have paid large fines for
>> overstating fuel economy.  I'll go out on a limb here and guess that Ford
>> has incentive to be very truthful with those numbers.
>>
>>
>> SO
>>
>> On Sun, Feb 23, 2020 at 10:35 AM James Peck <jamesgpeck at hotmail.com>
>> wrote:
>>
>>> Some updates on the 2019 F150 no options pickup I looked at.
>>> ​
>>> Base engine is a 3.3L aluminum block V6 with sprayed in cylinder liners.
>>> The Cleveland engine plant has an attached aluminum foundry.​
>>> ​
>>> Someone somewhere knows what percentage of the fasteners on the vehicle
>>> are metric. ​
>>> ​
>>> I suspect the combined highway mileage is a tad optimistic.​
>>> ​
>>> https://www.wardsauto.com/penton_modal/nojs/forward/50363/0
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>
>
> --
> --
>
> Francis Robinson
> aka "farmer"
> Central Indiana USA
> robinson46176 at gmail.com
>
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