Setting engine angle to diff - Page 2
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  1. #11
    Off the Xmas card list kapri's Avatar
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    Most are stepped down towards the road, as I put up earlier it's to do with making the engine submarine in event of frontal collision.

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  3. #12
    Official RnS Addict 1stpop's Avatar
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    ok so they are meant to be facing down, this is where im now getting confused by how much is best, what ive just tried to do is make engine and diff pinion straight at ride hight now engine needs to be 46mm higher so the prop is angled down 2 degrees.
    Last edited by 1stpop; 28-02-2011 at 12:16.

  4. #13
    Rods 'n' Sods Junkie
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    One comment here. The diff nose on a Mopar should point downwards, not up, or horizontal.

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  6. #14
    Official RnS Addict 1stpop's Avatar
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    more confusion
    any idea why where how much , uncle joe

  7. #15
    Dragging not Bragging vince-305's Avatar
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    Quote Originally Posted by 1stpop View Post
    cheers vince, but if i worked from my inlet manifold level and stepped back you can see that the engine is laying back i.e tail shaft of gearbox is facing towards the road. like col says mine must have a slopped manifold.
    And from that id guess that the Mopar are rear sumped ???

    Can i also ask why you are setting the diff with 0 angle ? i thought you need to have some pinion angle for traction (that is an honest question or ar race cars different to road cars ....or am i totally wrong )

    Quote Originally Posted by kapri View Post
    I'd diasgree with 'control area' as if that was true you could sling the prop in at any old angle ? It's about ideal set up static giving a usable working range on the road.
    Kev i think i may of mis-worded my reply ?????

    What i meant was if you set an engine up at perfect 0degree while the chassis is on a perfect zero jig (controlled area) then put the car on a road that has a 3degree incline then the engine will too sit at 3 degrees (un-controlled area)
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  8. #16
    Official RnS Addict 1stpop's Avatar
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    thats what the book has suggested if you look at the picture i posted on page 1 it shows the diff straight or am i now missing some thing
    [IMG][/IMG]

    see this what i need to sort out so many different people tell you so many different things, who you meant to believe......


    The image above is what im trying to get if you put a angle finder on the prop it measures 2 degrees.
    Last edited by 1stpop; 28-02-2011 at 12:18.

  9. #17
    Dragging not Bragging vince-305's Avatar
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    Illustration purposes only .................... i think

    What you should aim for is matching angles as in if the gbox points down 3 degrees then the diff should be be up 3 degrees (I think)
    Bit'z 'N' Piece's
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  10. #18
    Dragging not Bragging vince-305's Avatar
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  11. #19
    Rods 'n' Sods Junkie mundungus's Avatar
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    I found this site to be great when we were mounting our engine and box.

    Measuring propshaft Angles

  12. #20
    Rods 'n' Sods Junkie
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    Quote Originally Posted by 1stpop View Post
    more confusion
    any idea why where how much , uncle joe
    Yep. Set the angle of the prop shaft at the transmission end to between 0.5 and 2.5 degrees. Then set the pinion nose down in relationship to the prop shaft. Not the road. This is what i meant by nose down. This angle should be between 5 and 7 degrees, keeping it closer to 5 for race, and 7 for road. When set up correctly, the diff usually does point towards the road. This is because when you accelerate, torque reaction lifts the front of the diff of leaf sprung cars. Front values are always the same, but for other types of rear suspension they vary a little.

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