Special Tools for rebuilding a 308gt4 engine from 1974 | FerrariChat

Special Tools for rebuilding a 308gt4 engine from 1974

Discussion in '308/328' started by Curriculum, Jun 4, 2024.

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  1. Curriculum

    Curriculum Rookie

    May 9, 2024
    31
    Full Name:
    Curriculum
    Hello.
    Which special tools are mandatory to rebuild a 308gt4 engine from 1974?
    Is there a list available? And where to buy in Europe?
    Br
     
  2. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,572
    San Carlos, CA
    Full Name:
    Mitchell Le
    Get yourself a WSM and there will be a listing of special tools for the engine rebuild. Although, many of those are no longer possible to find. Chances are you will have to make some tools yourself.

    Some must have tools are:
    1. Tool to press out the liners from the block
    2. Line bore bar, although any machine shop will be able to do this.
    3. The workshop may not call out specific measurement tools but you will need Boring Gauge, Calipers, Outside micrometers
    4. Engine stand.
    5. 4-prong sockets for the drop gears and for the timing drive gears.

    It goes without saying that you need a very healthy supply of good hand tools: sockets, ratchets, wrenches from 6mm up to 36mm.
     
  3. Curriculum

    Curriculum Rookie

    May 9, 2024
    31
    Full Name:
    Curriculum
    Hi. I already have several Workshop manuals. I just wanted to get sure if something else is necessary. Would be great to get more links or pictures of the mentioned tools, in order to order the right ones. I own non Ferrari specific automotive tools
     
  4. miked

    miked Formula Junior

    Feb 7, 2001
    898
    Cincinnati, Ohio
    I would say that the 4-prong sockets would be the first specialized tools that most people would acquire. That being said it assumes that you already have have common hand tools, wrenches, sockets etc., that would be used on any car.

    It all depends on how much of the actual work you are going to do vs. send out to a machine shop ("engineering" shop in the UK). You would be well advised to search this site for threads about removing the heads from the block. They are often corroded in place and require some special tools and techniques to remove without damaging them or the block. You may be lucky and not have that problem but being able to recognize it beforehand may save you some expensive grief.

    Depending on your expertise and machining experience most of these specialty tools can be fabricated in a home shop equipped with a lathe and milling machine for much less than purchasing them.

    If you are unsure about any procedure just ask, there are a lot of people with rebuild experience on this forum that will be happy to answer any questions that you have. Having been working on cars for nearly 60 years I can say that the 308/328 engines are not complicated at all and are pretty easy to work on especially once out of the car. Here is my specialized tool for engine removal, if in doubt rip it out!.


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  5. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,572
    San Carlos, CA
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    Mitchell Le
    Where do I get an engine hoist like that?
     
  6. Curriculum

    Curriculum Rookie

    May 9, 2024
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    Curriculum
    Unluckily I live in Europe. Otherwise I would have asked you to rent me your engine removal tool :) I have a lot of tools but never bought my own lathe or milling machine. Last time I used them was as I was a student in 2001 :) How many different 4-prong sockets do I need (sizes??). Only the two links -smg2- sent ?
     
  7. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,105
    Cowboy Capitol of the World
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    Brian Crall
    If you call it a ring nut socket the suppliers might actually understand what you are asking for.

    Hill Engineering makes them too.
     
  8. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,572
    San Carlos, CA
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    Mitchell Le
  9. Curriculum

    Curriculum Rookie

    May 9, 2024
    31
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    Curriculum
    Do you prefer Hill Engineering than superformance or dinoparts in germany?
     
  10. miked

    miked Formula Junior

    Feb 7, 2001
    898
    Cincinnati, Ohio
    Actually I only used it to move the engine from my pickup to the basement shop. I have a Bilco door for basement access and use the loader to lower the engine down to an awaiting dolly in the basement. That's why it's hanging by a long chain. The car is in my son's garage and we used a conventional engine hoist to pull the engine from the car. The loader is a 1957 Oliver OC-46, 3k lb. lift capacity, very useful to have around.
     
  11. Curriculum

    Curriculum Rookie

    May 9, 2024
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    Curriculum
    Which range should a torque wrench have to work on a 308 engine?
     
  12. kcabpilot

    kcabpilot Formula 3

    Apr 17, 2014
    1,608
    California SF bay area
    Full Name:
    Paul
    The only "special" tools I've needed to buy so far were the ring nut socket, valve spring compressor and blind bearing puller.
     
  13. Curriculum

    Curriculum Rookie

    May 9, 2024
    31
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    Curriculum
    can you please send me links to these tools. Want to see exactly what you mean
    What about the torque wrench which is mandatory ! Range in Nm please
     
  14. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,572
    San Carlos, CA
    Full Name:
    Mitchell Le
    You need three torque wrenches.
    5-30Nm probably 1/4 inch one
    10-100 Ft-lbs, 3/8 inch one
    50-250 ft-lbs probably 1/2 inch one.

    I don't think there is an torque angle spec on the 308GT4 so no need for that.
     
  15. Curriculum

    Curriculum Rookie

    May 9, 2024
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    Curriculum
    5-30Nm
    10-100 Ft-lbs = 13Nm - 135Nm
    50-250 ft-lbs = 67Nm - 338Nm

    The range is 5-338Nm right ?
     
  16. Curriculum

    Curriculum Rookie

    May 9, 2024
    31
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    Curriculum
    This is a screenshot form the Mondial 8 quattrovalvole manual:
    The torques are from 0,3 - 10kgm which is about 2,9 - 98 Nm.

    I think the 308gt4 engine has similar values.

    Am I right ?


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  17. smg2

    smg2 F1 World Champ
    Sponsor

    Apr 1, 2004
    16,338
    Dumpster Fire #31
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    SMG
    Typical tool collection would have 3 tQ wrenches, 1/4", 3/8" & 1/2" drive with the common ranges to them. Beam style preferred.
     
  18. Curriculum

    Curriculum Rookie

    May 9, 2024
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    Curriculum
    What means beam style? And why this kind? Can you please send me a link with picture. Tx
     

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