3.6L Timing Chain Issue Summary

Discussion in 'Challenger SE Engine and Performance Modifications' started by Hopslayer, Jul 31, 2022.

  1. Moparisto

    Moparisto Full Access Member

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    32 freaking mpg at 75mph.
    With a blower, no less.
     
  2. Hopslayer

    Hopslayer Full Access Member

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    Ripp advertises that you'll get 1-4mpg BETTER mileage by adding a supercharger, because the increased air flow makes your engine run better. I went to Minneapolis before adding the supercharger when my car was stock and I got 29.7mpg.
     
  3. stingray

    stingray Full Access Member

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    This sounds very familiar same as the V8 5.7 and 392 engines in that you must change that oil every 6 months.
    :eek:
     
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  4. Hopslayer

    Hopslayer Full Access Member

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    I think it's even more important to keep it at the full level than to change it that often.
     
  5. HellKitten

    HellKitten Full Access Member

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    Absolutely. Who would think the oil could get that low. Though the pentastar motor Does have 3 oil piston coolers that must spray the oil when needed, probably under heavy load, towing, racing ect.
     
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  6. stingray

    stingray Full Access Member

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    Always keep it full never let it go down. Who does that?:facepalm::snoopfacepalm:
     
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  7. stingray

    stingray Full Access Member

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    Both are very important.
     
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  8. Moparisto

    Moparisto Full Access Member

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    Or just put straight 90 weight in it.

    Well, the good news is your engine metal-on-metal friction has been pretty well eliminated.

    The bad news is that it gets 7mpg!

    :D
     
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  9. Moparisto

    Moparisto Full Access Member

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    The thought of designing some pistons that are non-interference fit for the 3.6 comes to mind. Same compression but REALLY deep valve pockets. They'd look like F1 pistons, I think.

    [​IMG]

    This particular piston has such huge intake valves compared the little exhaust valves, it is not at all indicative of a supercharged engine.

    Observe the very tall areas surrounding the valve pockets though they are called "quench areas" they are also for making sure compression is kept up for maximum power. I have seen them even more extreme than this, with the valve pockets on the edges and even a small tub in the middle, with massively built-up areas all around it, so the valve pockets were quite deep.
     
    Last edited: Aug 10, 2022 at 9:15 PM