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Thread: Rich or lean??

  1. #1
    Matatan tocullo's Avatar
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    Rich or lean??

    Probably a dumb ? But better safe than sorry. What is worst running an engine rich or lean? What are the consequences of both?

    Thanks Andy


  2. #2
    dnielsen's Avatar
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    Running it lean will get the engine dead instantly in some stuations (melted pistons) if not sooner. Too rich and youll get gas in the oil resulting in washing out the bearings and destroying the engine.

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    !!!! wave jumper !!!! 05_RXP's Avatar
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    i would say lean is 10X worse risk the chance of blowing motor up. and rich waste more fuel, motor doesnt run as hard, and foul plugs

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    Matatan tocullo's Avatar
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    Ok, now my other? Is there a safe way of setting my rrfpr with out an AFR gauge?
    The reason of my ? Is because I just mounted my rrfpr with x charger and 42lb injectors.
    But the afr gauge that I order is not here yet and I want to ride on saturday.

    Thanks

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    shrabber's Avatar
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    No real safe way You maybe can put the base at say 60psi but with not a real measure of afr's you will never really truly know if your running rich or lean. So answer imo no, If you want to ride put the base close to 60 and dont duck tape the throttle at wot

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    Matatan tocullo's Avatar
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    Quote Originally Posted by shrabber View Post
    No real safe way You maybe can put the base at say 60psi but with not a real measure of afr's you will never really truly know if your running rich or lean. So answer imo no, If you want to ride put the base close to 60 and dont duck tape the throttle at wot
    I can do that, hopefully I get my afr gauge kit Friday and I can start playing with it next week.

    Thanks

  7. #7
    MSRXP's Avatar
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    Too lean will cause rapid engine failure. Too rich will cause increase ring wear, leading to increased blow by.

  8. #8
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    So what AF numbers should we see at idle / mid / wot

  9. #9
    dnielsen's Avatar
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    Quote Originally Posted by Hondapro210 View Post
    So what AF numbers should we see at idle / mid / wot
    http://www.greenhulk.net/forums/show...om-The-Experts

  10. #10
    MSRXP's Avatar
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    Idle doesn't matter as there is no load on the engine mid 14's are ok. 13.5 mid range with no boost. 11.9 at WOT.

    Look at dneilsen's chart. It is a good one. Lots of expert advice there.

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