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3 x type 4 engine rebuilds (this is going to take a while)

Discussion in 'Engine & Transmission' started by rstucke, Jul 3, 2021.

  1. rstucke

    rstucke Well-Known Member

    Messages:
    1,854
    Location:
    Wamberal NSW AUS
    I've stripped down and boxed 3 engines
    CE 1700 engine surplus to Retro Rv's needs
    CJ cases, flywheel tinwear and bits and pieces I bought from Patrick (tintop) back in 2018
    CV engine I bought from Col (cubs) early in 2020 but couldn't get it till November.

    The CE will be a rebuilt bottom end with a 2 ltr crank, rods and cam.
    The CJ will be a 2ltr complete turn key motor with a torque cam
    The CV will be large and angry and will be equipped with a 5 speed Subaru transmission and be put into Blitz.
    Left to right 1.7ltr, 2ltr t2, 2ltr t3

    19.jpg

    g.jpg
     
    Last edited: Jul 3, 2021
  2. rstucke

    rstucke Well-Known Member

    Messages:
    1,854
    Location:
    Wamberal NSW AUS
    s0 did a couple of heads up
    These will go on the 2ltr engine


    3.jpg

    9.jpg 9.jpg
    14.jpg
     
  3. rstucke

    rstucke Well-Known Member

    Messages:
    1,854
    Location:
    Wamberal NSW AUS
    something interesting
    3 different cooling fans

    one from a CE 1700
    one from a CJ 2ltr
    one from a CV t3 2ltr

    have a close look at the bottom fan
    3.jpg
    Closer look

    3A.jpg


    put a straight edge through the fins and drew a line

    4.jpg

    separate views
    CJ
    6.jpg


    CV (t3)

    5.jpg


    That's the difference between the CJ (shallow) and CV (radical) pitch of the fins
    Now the problem is
    Does the CV fan pump more or less air
    A t3 doesn't supply air for the heater boxes (comes from a fan on the alternator) but is a heavier vehicle
    So reduce air flow so less tax on power, or increase air flow because of extra weight and research & development?

    I'm working out how to test this on my lathe.
     
    David H, Wiz, KahunaKombi and 2 others like this.
  4. Mr Beckstar

    Mr Beckstar Well-Known Member

    Messages:
    1,154
    Location:
    Bateau Bay, NSW
    The blade angle will change the efficiency versus rotational speed graph. A larger angle will increase efficiency at higher rpm but reduce efficiency at lower rpm.
     
    David H and tintop like this.
  5. Mr Beckstar

    Mr Beckstar Well-Known Member

    Messages:
    1,154
    Location:
    Bateau Bay, NSW
    I wonder if I’ve got the right fan on Harry. Are they all interchangeable?
     
  6. rstucke

    rstucke Well-Known Member

    Messages:
    1,854
    Location:
    Wamberal NSW AUS
  7. David H

    David H Well-Known Member

    Messages:
    6,612
    Location:
    newcastle
    Is the fan blade the same shape? Both width, curve & depth (thickness).
     
    Mr Beckstar likes this.

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