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BAR[_2_]

In article ,
says...

"iBoaterer" wrote in message
...

In article ,
says...

"iBoaterer" wrote in message
...

In article ,
says...

wrote in message
...

On Friday, December 28, 2012 8:23:51 AM UTC-5, BAR wrote:

Ford's V10 is a gas sucking pig.

Yeah, but it's a very good hauling machine. With 360 HP and 460
ft/lb
of torque, it'll move stuff. You just don't get that for free if
you
have to go gas instead of diesel.

-----------------------------------------

Ford's V10 is one of the few gasoline engines that has the torque
ratings of some similar sized diesels. It's too bad it developed
a
reputation for spitting out spark plugs.

Strip the threads out? Had a Honda SL-350 dirt bike that did that on
both cylinders. Thanks for Heli-coil inserts!!

------------------------------------------------

That was Ford's fix for a while. The problem is that a Heli-coil in
aluminum isn't any stronger than the original thread, so it would
sometimes happen again. Ford blamed shade tree mechanics, claiming
they were over-tightening the spark plugs when replacing and stopped
doing warranty repairs.

Well, you DO have to be careful torquing anything in aluminum but
still,
there had to be something wrong if they were just blowing out. Now my
dirt bike was probably because of someone over-tightening too many
times. In aluminum it's a must to torque correctly and use anti-seize
on
the threads.

--------------------------------------------------

Although some failures were linked to over-tightening, the real
problem was the alloy used in the aluminum heads. After repeated heat
cycles, it weakened and let go during a compression cycle. It was the
two rear cylinders that were mostly affected.

No too difficult to predict it would be the rear two cylinders.

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