Change alternator position 807-10 engine
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Thread: Change alternator position 807-10 engine

  1. #1
    Tadpole
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    Default Change alternator position 807-10 engine

    I am currently restauring an old Renault 8 racecar. I am going to use a Renault 807-10 engine. But I don't want to cut a hole in the body so the alternator will fit in it's original position. Are there any "off the shelf" parts so I can move the alternator to the rear (timing chain side) of the engine and use the crankshaft pulley to drive it?

    And are there anyone who has a suggestion on a starting point for jetting a pair of Dellorto dhla45 on this engine?

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    1000+ Posts geckoeng's Avatar
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    "R8RX"
    You need to get a R18 or Fuego turbo timing chain cover and pulley. Throw away the harmonic balancer, and fit it. You need to make some dowel pins for 2 of the locating positions they would just be shoulder bolts without heads. And then a bracket to hold the alternator. Not sure of the mount lugs on an 807 block, this is an 841. I used to mount my alternators on the starter motor bolt before I started doing the crankshaft pulley. A few spacers and an adjustment bar and it is done. (No pictures)

    Change alternator position 807-10 engine-dscn0141.jpgChange alternator position 807-10 engine-dscn0142.jpgChange alternator position 807-10 engine-dscn0147.jpgChange alternator position 807-10 engine-dscn0148.jpg

    Ray
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    1000+ Posts alan moore's Avatar
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    Renault 15/17 also had a pulley for a fan at the timing chain end. The crank is the same as I remember, just the cover and fan pulley needed. Plenty of bosses at that end of the engine to make an alternator bracket fit in.
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    Too many posts! JohnW's Avatar
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    Quote Originally Posted by R8RX View Post
    I am currently restauring an old Renault 8 racecar. I am going to use a Renault 807-10 engine. But I don't want to cut a hole in the body so the alternator will fit in it's original position. Are there any "off the shelf" parts so I can move the alternator to the rear (timing chain side) of the engine and use the crankshaft pulley to drive it?

    And are there anyone who has a suggestion on a starting point for jetting a pair of Dellorto dhla45 on this engine?
    And welcome to Aussiefrogs!!

    We'd love to see some photos please.

    Regards
    JohnW

    Renault 4CV 1951
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    Renault Scenic 2007 (mine)
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    Too many posts! JohnW's Avatar
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    Quote Originally Posted by geckoeng View Post
    "R8RX"
    You need to get a R18 or Fuego turbo timing chain cover and pulley. Throw away the harmonic balancer, and fit it. You need to make some dowel pins for 2 of the locating positions they would just be shoulder bolts without heads. And then a bracket to hold the alternator. Not sure of the mount lugs on an 807 block, this is an 841. I used to mount my alternators on the starter motor bolt before I started doing the crankshaft pulley. A few spacers and an adjustment bar and it is done. (No pictures) Ray
    Both you and Frans should publish books with the photographic solutions to everyones' questions I reckon. You must have the whole suite between you. Alan Moore too, although I haven't seen his photos....

    Cheers
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    JohnW

    Renault 4CV 1951
    Renault R8 1965
    Renault Scenic 2005 (wife's)
    Renault Scenic 2007 (mine)
    Peugeot 306 XT 1995 (daughter's)
    CitroŽn CX Pallas 1980

    National Co-ordinator, Renault 4CV Register of Australia

  6. #6
    Tadpole
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    Thank you for your answer! Yes, i have a fan pulley at the timing chain side of the crankshaft. Is this useable or do I have to go for geckoeng's solution?

    I will try to get some photo's out here

  7. #7
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    Love the photos and the engine geckoeng. Welcome to R8RX.

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    Fellow Frogger! Shoji's Avatar
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    Quote Originally Posted by R8RX View Post
    Thank you for your answer! Yes, i have a fan pulley at the timing chain side of the crankshaft. Is this useable or do I have to go for geckoeng's solution?

    I will try to get some photo's out here


    If you have thermo fans, I guess yes, use the front pulley for the alternator.
    ďListen very carefully, I shall say this only once.Ē Cheers. John

  9. #9
    1000+ Posts geckoeng's Avatar
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    "R8RX"
    as for Dellorto tuning try Shoji's starting point reference,
    Daves home page

    Ray
    Ray geckoeng

    Think Old, But Run Modern !!

  10. #10
    1000+ Posts alan moore's Avatar
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    Quote Originally Posted by R8RX View Post
    Thank you for your answer! Yes, i have a fan pulley at the timing chain side of the crankshaft. Is this useable or do I have to go for geckoeng's solution?

    I will try to get some photo's out here
    The pulley was good enough to drive a fan,(although a bit flimsy) and given the alternator is likely to use less horsepower to drive than a fan, I think all would be fine. The original crank pulley diameter would work OK with a standard alternator pulley. It is generally around a 2.5 to 1 ratio.
    '56 Renault 750 (16TS Power)
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    '89 Renault Alpine GTA V6 Turbo
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  11. #11
    Tadpole
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    "Geckoeng" Thanks for the advice regarding the Dellorto's.

    I guess I have to get hold of an alternator and bracket then and see how it fits

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