> I did a bad job of editing. lugnut did not write this. My bad.
>
[quoted text clipped - 10 lines]
>>
>> Jeff
>Well, in the US, the two cycles are supposed to change to four cycles (EPA)
>one of these days. The outboards have already done so.
>A lot of the small carbs are made outside the US.
Personally, I wont complain at all about changing the 2 cycle engines
to 4 cycle. Mixing gas and oil has always been a pain, and worse yet,
I have never owned any 2 cycle engine that does not need to be
repaired at least every 6 months. In fact I got so tired of fighting
with 2 cycle chain saws that I bought an electric one. I'd rather run
extension cords, than fight to start a 2 cycle engine. It seems that
if a person uses their chainsaw daily they work better, but for me,
it's something I use a few times a year, and even if I drain the gas,
they just dont want to start.
Most of the carbs I find on small engines are Walbro. I suppose thats
an import. I am almost sure I have seen Holley carbs on at least a
few small engines.
F.D.
Jeff - 19 Feb 2008 01:19 GMT
>> Well, in the US, the two cycles are supposed to change to four cycles (EPA)
>> one of these days. The outboards have already done so.
[quoted text clipped - 4 lines]
> I have never owned any 2 cycle engine that does not need to be
> repaired at least every 6 months.
Mack used to make some good 2-cycle diesel engines.
They were, however, too heavy for chainsaws.
Jeff
lugnut - 19 Feb 2008 02:31 GMT
>>> Well, in the US, the two cycles are supposed to change to four cycles (EPA)
>>> one of these days. The outboards have already done so.
[quoted text clipped - 10 lines]
>
>Jeff
That would have been the DDA division of GM - Not Mack
Lugnut
Jeff - 19 Feb 2008 03:14 GMT
>>>> Well, in the US, the two cycles are supposed to change to four cycles (EPA)
>>>> one of these days. The outboards have already done so.
[quoted text clipped - 12 lines]
>
> Lugnut
I was thinking of the Mack 673. But, you may be right, I may have
confused it with the Detroit Diesel.
The one I am thinking of had 6 cylinders. The cylinders had slots in
them that let the exhaust gases leave. The head had four intake valves
per cylinder. There were little nozzles aimed at the pistons (nicknamed
pissers) that provided lubrication to the piston rings and cylinder walls.
It took me about 2 or 3 days to take apart and clean these engines
versus about 4 or 5 hours for small-block V8. Part of the reason was
that I had more experience with the V8s, so I was more efficient with
them. But it also took more time in the cleaning tank (which used hot
NaOH sprayed at the engine parts - like a real big dishwasher). I only
took appart two or three of these big engines.
Jeff