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Technical Motor Angle

Discussion in 'Traditional Hot Rods' started by Ehlien, Sep 17, 2015.

  1. Ehlien
    Joined: Mar 18, 2015
    Posts: 100

    Ehlien

    I'm dropping a 49 Merc Flat head 8 into an S -10 ch***is. is there any rule of thumb on how much angle the motor can be sloped backwards?
     
  2. big duece
    Joined: Jul 28, 2008
    Posts: 7,033

    big duece
    Member
    from kansas

    3 degrees is good for driveline, and the late flahead carb surface is machined the same so the carbs set level.
     
    yruhot likes this.
  3. Ehlien
    Joined: Mar 18, 2015
    Posts: 100

    Ehlien

    Excellent info ..thanks!!!!!!!!!!!!!!!
     
  4. chessterd5
    Joined: May 26, 2013
    Posts: 903

    chessterd5
    Member
    from u.s.a.

    Yes & no. There would be three things I'd think about regardless of the engine or the vehicle it goes in.
    1) Regardless of what final intake you use the carb base needs to be level or within 3-4* degrees. carbs don't like to work right at weird angles. use a small level on the carb base to get it straight.
    2) the more angled the engine is the more problems you may have with the oil in the pan. Including oil drain back & pump starvation if the angle lets the pump **** air.
    3) The angle of the transmission tailshaft will affect drive line pinion angle. They make magnetic protracter gauges that work great. good luck!
     
    Model T1 likes this.
  5. big duece
    Joined: Jul 28, 2008
    Posts: 7,033

    big duece
    Member
    from kansas

    Good advice, I would set the engine where you like it and manipulate the driveshaft and pinion to suit.
     
  6. Jalopy Joker
    Joined: Sep 3, 2006
    Posts: 34,068

    Jalopy Joker
    Member

    if all else fails, do a search here before starting a new thread on subject covered many times already
     
  7. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,322

    Johnny Gee
    Member
    from Downey, Ca

    This one, it's the easiest and fail safe so long as you have your vehicles ride height set and car on level surface. Or else the engine angle will change with different stance's and tire combination's of radical change.
     
    yruhot likes this.
  8. I always wondered how the old g***ers got away with all those wheel stands? Apparently that car works fine at WOT How does a car negotiate a parking garage? o_O

    A 10% road grade is about 6 degrees and you can encounter those for miles and miles and have to pull that grade.According to the bubble level now- That's going to be 9* down on your engine heading up that hill. Engine will be 3* up coming down.

    Obviously the hilliest parts of the country have area that are more than 10%, how do the old cars handle that.
    How's a motorcycle do wheelies for miles and miles.

    So many things to think about now
     
    Last edited: Sep 17, 2015
  9. metal man
    Joined: Dec 4, 2005
    Posts: 2,955

    metal man
    Member

    **** stirrer ∆∆∆∆∆
     
  10. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 17,582

    tb33anda3rd
    Member

    i used magic in my old plow truck when i pushed snow up long driveways and voodoo in my mower when mowing the back hill.
     
  11. pat59
    Joined: Sep 21, 2012
    Posts: 2,361

    pat59
    Member

    maybe they had swivel based carbs?
     
  12. Texas Webb
    Joined: Jan 5, 2010
    Posts: 5,110

    Texas Webb
    ALLIANCE MEMBER

    Amazing how our cars manage things w/o the aid of a computer;).
     
    volvobrynk likes this.
  13. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,322

    Johnny Gee
    Member
    from Downey, Ca

    Then a gyro-stabilizer is in order.
     
  14. henryj1951
    Joined: Sep 23, 2012
    Posts: 2,304

    henryj1951
    Member
    from USA

    tapered wedge under carb...:cool:
     
  15. yruhot
    Joined: Dec 17, 2009
    Posts: 564

    yruhot
    Member

    Damn it now I'll never get to sleep trying to find answers to these questions. But they are good questions. How about thos Joey Chitworths type cars that drive on two side tires for like miles around circletracks? Hmmmm?
     
  16. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 17,582

    tb33anda3rd
    Member

    they use witch craft and tikis.
     
  17. models916
    Joined: Apr 19, 2012
    Posts: 379

    models916
    Member

    How do you bolt down a wedge with straight studs on a flat mount?
     
  18. bobss396
    Joined: Aug 27, 2008
    Posts: 18,726

    bobss396
    Member

    Actually they are on a cup-holder swivel, like you see in power boats.
     
  19. Don's Hot Rods
    Joined: Oct 7, 2005
    Posts: 8,319

    Don's Hot Rods
    Member
    from florida

    I'm still trying to figure out if a he**** carrying a corpse can drive in the car pool lane . :confused::confused:


    Don
     
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  20. rusty1
    Joined: Nov 25, 2004
    Posts: 13,028

    rusty1
    Member

    Lil Red Wagon. Hurst Hemi under Gl***,etc?
     
  21. Nanny nanny boo-boo :)
    If you figure it out, you can just chuckle to yourself when "they" say " it must be 3* down"

    Extra coffee in the mean time
     
  22. Of course it can.
     
    volvobrynk likes this.
  23. Now That's a secret - a guarded secret.
     
  24. Oil pickup will **** air if the engine angle is wrong. :)
     
  25. I used to really stress about ride height/angle when stuffing an engine in then it occurred to me that we used to rake the hell out of 'em and drive 'em without changing the motor mounts.

    That said if you are building a car and have not yet set the engine then it doesn't hurt a thing to try and get it as close as possible. Set your ch***is up close to your desired end result and throw a torpedo level across the carb pad in both directions before you weld the motor mounts.

    I am concerned about why they don't have buggy pool lanes in Amish Country.
     
    volvobrynk likes this.
  26. Mannnn,,,
    don't get caught in the buggy lane without a buggy. They put you under the jail for that one.


    So lets say your ride sets kinda level, right ?

    the engine angle is at 3*
    The carb is level.
    The pinion is at 3*

    Nowww. Lets throw some big and littles at it :) get a nice rubber rake, maybe some air shocks or long shackles too. ( remember those days :) )

    So the ch***is a raked at that eye pleasing 4* *** up. Well the engine is now at 1* up instead of 3* down the pinion is still at 3* the carb is way off of level and the earth is about to stop rotating because of the paradox you've just created.
     
    Last edited: Sep 18, 2015
    volvobrynk likes this.
  27. Rocco611
    Joined: Sep 5, 2015
    Posts: 129

    Rocco611
    Member
    from Madera Ca.

    Lol No doubt carbs can run at steep angles and some carbs do it better than others. But yeah it's best if you level the carb base when you install the engine
     
    volvobrynk likes this.
  28. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 17,582

    tb33anda3rd
    Member

    there isn't a level spot within ten miles of here.........
     
    volvobrynk likes this.
  29. Rocco611
    Joined: Sep 5, 2015
    Posts: 129

    Rocco611
    Member
    from Madera Ca.

    Some days everything seems to be half a bubble off ..... Or as my wife says half a plum out of cherry
     
    Last edited: Sep 20, 2015
    volvobrynk likes this.

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