Register now to get rid of these ads!

Hot Rods 331 hemi alternator mounting issue : need solutions

Discussion in 'The Hokey Ass Message Board' started by 2345.coupe, Mar 20, 2017.

  1. 2345.coupe
    Joined: Jan 17, 2009
    Posts: 1,246

    2345.coupe
    ALLIANCE MEMBER

    I have a 1954, 331 hemi in a 1934 ford 2 dr sedan. My motor has an independant thermostat housing, not the housing between the tubes mounted in the front of the heads. I have a hot heads alternator bracket that mounts by the crank pulley, either side.
    Problem , I don't have enough clearance on either side.The front crossmember is in the way. You can notch the crossmember but then you'll be into the front spring.
    I'm sure several of you guys have been in the same situation and have fabricated a workable set up. here's some pics......
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
    Kan Kustom and LOU WELLS like this.
  2. steinauge
    Joined: Feb 28, 2014
    Posts: 1,507

    steinauge
    Member
    from 1960

    One of the very small alternators from one of the modern jap cars? I believe I would go to the local U-pull it and walk around. You might also look at mounting the alternator higher?
     
  3. sunbeam
    Joined: Oct 22, 2010
    Posts: 5,292

    sunbeam
    Member

    What alternator? The Chrysler style are not as deep as a GM
     
  4. 2345.coupe
    Joined: Jan 17, 2009
    Posts: 1,246

    2345.coupe
    ALLIANCE MEMBER

    I've been mocking up a 1 wire Chevy alternator
     

  5. First, how many amps do you actually need? A small denso alternator from a forklift is the smallest you can get and at 55 amps is quite enough.

    Second, look to mount it low on the drivers side, trim the motor mount pad off the crossmember and you could put 2 of them in there.

    image.jpeg
     
    saltflats and LOU WELLS like this.
  6. v8deuce
    Joined: Aug 11, 2009
    Posts: 77

    v8deuce
    Member

    I've even saw some mounted on the driveshaft but of course that limits it function. I'm sure you could mount one of the small denso's on the drivers side without any cutting


    Sent from my iPhone using The H.A.M.B. mobile app
     
    Atwater Mike likes this.
  7. 2345.coupe
    Joined: Jan 17, 2009
    Posts: 1,246

    2345.coupe
    ALLIANCE MEMBER

    thanks, good idea

    great idea Vicky....thanks, I'll keep you posted

    thanks deuce, I'm on it.......
     
  8. 2345.coupe
    Joined: Jan 17, 2009
    Posts: 1,246

    2345.coupe
    ALLIANCE MEMBER

    another concern is will a 50 amp. alternator have enough power to run the motor plus headlights with out any problems.
     
  9. staleg
    Joined: Jan 8, 2004
    Posts: 241

    staleg
    Member

    I made a bracet from thick walled 3/4" pipe on my 34 Roadster. Maybe not beautiful, but works very well.
    Thick walled pipes are very stiff.
    Judging from your photos I would probably tried to do something similar by using the 3 water pump bolts on the drivers side of the engine.

    [​IMG]

    [​IMG]
     
  10. Here it is on a SBC Chevy with a short water pump.
    image.jpeg
    image.jpeg
     
  11. Arominus
    Joined: Feb 2, 2011
    Posts: 394

    Arominus
    Member

    What cam are you running with that Hot heads single plane? Fairly hot i imagine since that intake doesn't come on till 3k or so.

    As others are suggesting, go grab a denso out of something. Thats my plan for my 392 install. I'm running the hot heads dual plane and so i can't replicate my top mount alternator setup i had. I'll be looking for a 90amp or higher denso. 50ish will be ok with your car IMO unless your going for high powered lights (run relays btw, you want max voltage at the bulbs), electric fans, A/C, ect.
     
  12. 2345.coupe
    Joined: Jan 17, 2009
    Posts: 1,246

    2345.coupe
    ALLIANCE MEMBER

    cam info:
    [​IMG]
     
    Arominus likes this.
  13. junkyardgenius
    Joined: Dec 29, 2005
    Posts: 837

    junkyardgenius
    Member
    from Kernow

    IMG_0466.JPG I,m going to run one of those small Denso alternators. This isn't,t mine I stole this pic off here but I,m making a similar set up.
     
  14. gimpyshotrods
    Joined: May 20, 2009
    Posts: 18,446

    gimpyshotrods
    ALLIANCE MEMBER

    My entire 1969 Malibu got by just fine with a factory installed 37A alternator.
     
  15. Kan Kustom
    Joined: Jul 20, 2009
    Posts: 2,676

    Kan Kustom
    Member

  16. Here's my solution, Nippon denso from a Suzuki samari
    IMG_3038.JPG
     
    Arominus and 31Vicky with a hemi like this.
  17. bostonhemi
    Joined: Dec 1, 2011
    Posts: 668

    bostonhemi
    ALLIANCE MEMBER

    Here's what I did but I used the stock water pump housing. I used a universal chrome alt bracket I cut down. (I was in such a hurry to get it running that I put the carb on backwards. I realized that when I went to connect the kickdown cable).
     

    Attached Files:

    saltflats likes this.
  18. saltflats
    Joined: Aug 14, 2007
    Posts: 10,890

    saltflats
    Member
    from Missouri

    ^^^now that's funny.
     
  19. Toqwik
    Joined: Feb 1, 2003
    Posts: 1,308

    Toqwik
    Member

  20. I might even paint it black
     
  21. That's the sweet spot.
     
  22. DDDenny
    Joined: Feb 6, 2015
    Posts: 15,152

    DDDenny
    Member
    from oregon

    Not a Hemi but food for thought.
    The dilemma I had was due mostly to pinching my frame rails.
    I already had bought this high amp alternator from Ford Motorsports and really wanted to keep it. I thought I was going to have to go with one of those little tractor alternators but a friend of mine said what's the big deal just "make the cut", so I did.

    20161107_010143.jpg

     
    31Vicky with a hemi likes this.
  23. sunbeam
    Joined: Oct 22, 2010
    Posts: 5,292

    sunbeam
    Member

    Can you space the crank and water pump pulleys out farther?
     
  24. DOCTOR SATAN
    Joined: Mar 21, 2014
    Posts: 711

    DOCTOR SATAN
    Member
    from okc

    Hey nice water crossover scottyt....
     
    31Vicky with a hemi likes this.
  25. 1800hotheads and it does not play well with other items necessary to drive the car.
     
  26. squirrel
    Joined: Sep 23, 2004
    Posts: 49,478

    squirrel
    Member

    I'd be looking at using the early Mopar alternator. It looks good...it's kind of large diameter, but it's short. And it looks good.
     
  27. So far everything seems ok with the crossover, what problems should I look for?
     
  28. 2345.coupe
    Joined: Jan 17, 2009
    Posts: 1,246

    2345.coupe
    ALLIANCE MEMBER

    this should work......
    [​IMG]
    [​IMG]
     
  29. 2345.coupe
    Joined: Jan 17, 2009
    Posts: 1,246

    2345.coupe
    ALLIANCE MEMBER

  30. saltflats
    Joined: Aug 14, 2007
    Posts: 10,890

    saltflats
    Member
    from Missouri

    I don't like the lower mount bolt at single shear.
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.