Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Crank Whip

fine, but that doesnt answer the questions about the jag. they come manual



Micah

Good point about the Jag. I guess they probably anticipate 99.9% sold will be automatic, and shift at or below the critical 4000 rpm point 99% of the time. Still, seems like a cheap choice on such an expensive car.

Marco!!!!! Where have you been! Welcome back chief.

http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=3L&Number=26807&page=0&view=collapsed&sb=5&o=7&fpart=1#Post29105

See procyon's reply

General experience says crank whip = broken cranks, oil film failure = spun bearings.

There has been much discussion here on the DMD. If crank whip is the primary cause of engine failure, I would expect to see much higher failure occurance in the engines that had underdrive/solid pullies installed. Have we seen this?
I know this seems to go against the prevailing religion in this group but I would not expect to keep a 7000 RPM street motor together and healthy for the long run by using a 5-30 oil, synthetic or conventional. I have been a strong proponent of using Mobil 1 0-40 oil in todays high performance engines (just as Porche, BMW & MB currently do). Before you guys tell me how �??thick�?� it is, take a look at a few sources of information.
http://www.epa.gov/otaq/cert/dearmfr/ccd0112.pdf
The above is an interesting government publication showing the �??guidance�?� the feds give the auto and oil industries which mandates 5-20 wt. Oil. The same �??guidance�?� was issued some years ago concerning 5-30. This is not a suggestion from an automotive engineer concerned with engine life, it is a directive from a Federal agency concerned with forcing us to get one tenth of one MPG better fuel consumption at the expense of engine life.
Spend some time on the Euro and Australian web sites of the auto and oil companies and see what you find when they can talk without worring about EPA guidlines.
The Euro Castrol site has an oil selector page. It specifies 10-40 or 15-40 for the Mondeo.
There are several instances of referring to 10-40 as a �??lighter weight�?� viscosity here.
Mobil Australia has the same type of oil selector guide on their site. Even though there is a footnote indicating Ford reccommends 5-30, Mobil then specifies 0-40 as the oil to use in the Mondeo.
You all might consider an upgrade from 5-30 oil if you participate in �??spirited�?� motoring with your Contours and don't want the engines to go boom.

Mark, you hit the nail on the head!!!!!

Originally posted by Mark:

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General experience says crank whip = broken cranks, oil film failure = spun bearings.

There has been much discussion here on the DMD. If crank whip is the primary cause of engine failure, I would expect to see much higher failure occurance in the engines that had underdrive/solid pullies installed. Have we seen this?
I know this seems to go against the prevailing religion in this group but I would not expect to keep a 7000 RPM street motor together and healthy for the long run by using a 5-30 oil, synthetic or conventional. I have been a strong proponent of using Mobil 1 0-40 oil in todays high performance engines (just as Porche, BMW & MB currently do). Before you guys tell me how �??thick�?� it is, take a look at a few sources of information.
http://www.epa.gov/otaq/cert/dearmfr/ccd0112.pdf
The above is an interesting government publication showing the �??guidance�?� the feds give the auto and oil industries which mandates 5-20 wt. Oil. The same �??guidance�?� was issued some years ago concerning 5-30. This is not a suggestion from an automotive engineer concerned with engine life, it is a directive from a Federal agency concerned with forcing us to get one tenth of one MPG better fuel consumption at the expense of engine life.
Spend some time on the Euro and Australian web sites of the auto and oil companies and see what you find when they can talk without worring about EPA guidlines.
The Euro Castrol site has an oil selector page. It specifies 10-40 or 15-40 for the Mondeo.
There are several instances of referring to 10-40 as a �??lighter weight�?� viscosity here.
Mobil Australia has the same type of oil selector guide on their site. Even though there is a footnote indicating Ford reccommends 5-30, Mobil then specifies 0-40 as the oil to use in the Mondeo.
You all might consider an upgrade from 5-30 oil if you participate in �??spirited�?� motoring with your Contours and don't want the engines to go boom.

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Where does one find 10-40 Mobil 1 or are you saying 0w-40?
Tnx
Paul

Mark, keep in mind that crank whip can also lead to oil film problems, and subsequently to spun bearings before the crank breaks, its just what decides to happen first on a given engine.

For those that have asked about buying 0-40.

The Mobil1 web site has previously said that 0-40 is only available at BMW, and MB dealers.( There's a clue about who thinks this is the oil to use in high output motors) My local auto parts supplier went out of his way to obtain 0-40 from his warehouse for me. That was last year. He now stocks it on the shelf because the demand is there. You might ask your local guy. In addition, Auto Zone stores in the NY metro area have begun stocking 0-40 just this past month.
If you want to "save a buck" you might email Wal Mart from their site contact point and request that they begin stocking 0-40 in 5 quart jugs. That would bring the price down to $3.58 per quart. They were pretty responsive in stocking Mobil 1, 0-30 shortly after Mobil brought that out.

Yes, I have heard crank flex at speed can do damage to bearings as well, although I would expect to see some broken cranks along with the spun bearings. HAve guys been reporting broken cranks? I would be curious what the majority of the failure modes have been over the years. Has this info been discussed at all?