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New Volt should get 230 mpg in city, GM says - Page 7

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Posted by user on August 12, 2009, 10:59 pm
 
Bruce Richmond wrote:

http://alignmentandbrakesplus.com/Timing.htmhttp://www.galsonauto.com/mc/timebelts.html

You were very lucky, you should have bought a lottery ticket that day ;~)

Posted by clare on August 13, 2009, 4:34 am
 
On Wed, 12 Aug 2009 11:29:03 -0700 (PDT), Bruce Richmond


Well, I've seen LOTS of timing chains fail over the years. 2600cc
Mitsushitty engines were famous for it. GM V8 and some V6 engines has
plastic sprockets that failed pretty predictably.. Saw a lot of timing
chain failures on one of the Ford V8s in the seventies as well. Many
318 and 360 Chrysler engines had the chain jump a tooth as well IIRC.

And often end up with one that ALSO needed the chain replaced. I used
to replace them as a precaution whenever I replaced one of the engines
that was prone to fail  - with an aftermarket chain set that was
proven to outlast the OEM significantly.


Posted by News on August 13, 2009, 10:00 am
 


Chains stretched far more than timing belts, one of the reasons why they
went to belts.  When they stretched the timing went out.  I replaced my
timing belt and the engine was noticeable faster and smoother as the timing
tightened up.  Best to have two-stroke engines with no valves or belts. :)
Two-stroke units are best used as range extenders on the likes of the Chevy
Volt running at constant speed.  Very smooth.


Posted by user on August 13, 2009, 12:17 pm
 News wrote:

Two strokes are filthy engines.

Posted by News on August 13, 2009, 1:54 pm
 

Modern two-strokes with direct injection are not at all.  Look at the Bourke
engine:
http://en.wikipedia.org/wiki/Bourke_engine
http://www.bourke-engine.com/vlb/



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