Re: [Chrysler300] 440 300 problem

["jean-yves chouinard" <jymopar@xxxxxxxxxxxxxxx>]

Michael.
Well, maybe your right...or the breaking oil combined to the oil I was using at the time in that 426 wedge(it was 10-30 Castrol GTX) was the cause of the premature wear. Oil pressure gauge showed pressure althought pressure was low at idle speed...I didn't check the oil pump internals yet...
This oil issue is a concern to me. I enjoy driving my old car, and never gave a second thought to the oil in the engine other than the occasional level verification... but now it seems we can't be sure from one year to another which oil to use in our old cars!
Does someone know for sure if diesel oil (Shell Rotella and the like) is still good? If not, what kind of oil can I use so I don't need to do an engine rebuilt every 2,000 miles?? Synthetic??
Jean-Yves
----- Original Message ----- 
  From: Michael Reed 
  To: jymopar@xxxxxxxxxxxxxxx 
  Sent: Thursday, September 13, 2007 8:27 AM
  Subject: Re: [Chrysler300] 440 300 problem


  I'm not going to argue with Paul regarding the zinc issue, but let me say this regarding the problem(s) you've had with the 426 engine.

  I don't buy for one second the abnormal wear on the cam and fuel pump push rod was the result of the brand of break-in oil being used. You could have put a cheap non-detergent oil in a brand-new/rebuilt engine and not experience that sort of wear in 2,000 miles. The removal of an additive could not begin to cause that degree of wear. It seems like no oil was getting to the pushrod/cam lobe area (or -- almost like it had kerosene instead of motor oil in it for a lubricant). 

  Something awfully fishy going on there!

  Mike Reed
  Lake Odessa, Michigan
  ----- Original Message ----- 
    From: Paul Holmgren 
    To: jean-yves chouinard 
    Cc: chrysler300@xxxxxxxxxxxxxxx 
    Sent: Wednesday, September 12, 2007 22:18
    Subject: Re: [Chrysler300] 440 300 problem


    jean-yves chouinard wrote:

    > Ryan and all.
    > I had a 426 wedge rebuilt, Dyno tested and dropped in my 62 300 Sport. After about 2,000 miles the fuel pump push rod was so worned out I got stuck by the side of the road... with no gas being pumped to the carbs of course. Regular fuel pump in the car, no heavier fuel pump inner spring or anything.The push rod was a good 3/8 inch shorter than a new one!
    > My engine shop told me the problem was the breaking oil they used. Apparently, an ingredient in the oil has been taken out of the original oil recipe, so to speak, by the oil manufacturer(without notice to engine rebuilders?) and that's what was causing the early and fast wear out of the push rod.
    > The engine shop has since been using John Deere engine breaking oil which will not cause premature wear of engine components.
    > Needless to say the cam in that 426 wedge is trash now. I will have to check crank main bearings and rod bearing before another start up of this engine. I had 2 engines done since the 426 , both were breaked in with John Deere breaking oil and so far no problems or premature wear. I use diesel oil in all my engines.
    > Regards.
    > Jean-Yves in New Brunswick.(K conv. etc...)

    In the USA it's not the Oil manufacturers fauolt entirely. THE EPS 
    forced a chemical change, REMOVE THE ZINC !!
    Bad for us old timeers cars, solid lifters = PROBLEM down the road

    -- 
    Paul Holmgren
    2 57 300-C's in Indy
    Hoosier Corps L#6


     

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