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Need help with 308 engine wiring

Discussion in '308/328' started by Nuvolari, Nov 26, 2017.

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  1. Nuvolari

    Nuvolari F1 Veteran
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    #1 Nuvolari, Nov 26, 2017
    I'm in the process of putting my 308 engine back in and for the life of me I cannot be sure where all the wires go :mad: Totally my fault as I did not take the photos I should have when taking the engine out. Below are some photos of the wires from the Alternator, from the chassis harness, and from the starter. I labelled all of the wires and harnesses and kindly ask if someone could please let me know what the correct wiring sequence would be. Many thanks.

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  2. absostone

    absostone F1 World Champ
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    #2 absostone, Nov 26, 2017
    guessing cause my gt4 is different, a1/ c1 and c2 to s2, a2 to c4. and c3 to either one of s1 or s4 that is soldered to the solenoid spade connector. btw a1 and a2 harness lays behind the dipstick tube if you have a early carbed and route it to the solenoid
     
  3. absostone

    absostone F1 World Champ
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    #3 absostone, Nov 26, 2017
    though not sure if the green c1 would go to s2, the green looks like a ground
     
  4. Nuvolari

    Nuvolari F1 Veteran
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    #4 Nuvolari, Nov 27, 2017
    Green C1 goes directly to the positive terminal on the battery. I'm pretty sure the wiring should be as follows:

    A1, C1, C2 - goes to terminal S2 on the starter

    C4 plugs into A2

    C3 plugs into spade terminal S1 on the starter

    Can anyone confirm this please before I start a fire :p
     
  5. ME308

    ME308 Formula 3

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    #5 ME308, Nov 27, 2017
    Last edited: Nov 27, 2017


    yes ..sounds good ;)

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  6. Nuvolari

    Nuvolari F1 Veteran
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    #6 Nuvolari, Nov 27, 2017
    Excellent thank you for the assurance
     
  7. absostone

    absostone F1 World Champ
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    #7 absostone, Nov 27, 2017
    Let us know. When I did mine I had the spade on the wrong side and there was no ignition. Swapped sides of the spade and it started right up
     
  8. Andy 308GTB

    Andy 308GTB F1 Rookie
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    #8 Andy 308GTB, Nov 27, 2017
  9. absostone

    absostone F1 World Champ
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    #9 absostone, Nov 27, 2017
    good photos. btw did I win a prize for guessing correctly ,,, like a kik in the ass for good measure?
     
  10. Nuvolari

    Nuvolari F1 Veteran
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    #10 Nuvolari, Nov 27, 2017
    Thanks again guys. Now I am sure it is wired correctly.
     
  11. absostone

    absostone F1 World Champ
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    #11 absostone, Nov 27, 2017
    Did it work/ is it running/ let us know
     
  12. Nuvolari

    Nuvolari F1 Veteran
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    #12 Nuvolari, Nov 27, 2017
    I’m at least a week away from cranking the engine but feel confident the wiring is ok. I will post if there are any problems
     
  13. absostone

    absostone F1 World Champ
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    #13 absostone, Nov 27, 2017
    cool thanx. full rebuild? or massive service?
     
  14. Nuvolari

    Nuvolari F1 Veteran
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    #14 Nuvolari, Nov 27, 2017
    Massive service including new exhaust valves and engine bay detailing. I’ll make a separate thread about it later. As with most things I got carried away :eek:
     
  15. absostone

    absostone F1 World Champ
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    #15 absostone, Nov 27, 2017
    Very Cool! I did the same thing to my Gt4 this year, ss valves, carbs, seals ,etc , etc until I got to 11k$, and I pulled and reinstalled the motor myself!! plus a repaint in bare metal !
     
  16. AlfaGreg

    AlfaGreg Karting

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    #16 AlfaGreg, Nov 29, 2017
    Very interested in your rebuild Rob. I think our cars are close as I am 20433. Heading down the same path.
     

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