77 308 GTB Engine Number Help | FerrariChat

77 308 GTB Engine Number Help

Discussion in '308/328' started by MaranelloMark, Apr 11, 2024.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA
    Hi All,

    I have VIN 21819, sequence #1 and the engine number by the water pump shows:

    F106A
    *02463*

    Nothing after the raised 'F106A'
    And nothing outside the stamped "*02463*"

    Any info as to whether this is an original or replacement engine? I don't see the indicators for dry vs wet (A20 vs. A21). I know this chassis had the engine converted to dry, but I'm trying to determine if they just swapped engines with a dry or if this is a replacement wet engine modified to dry?

    Thanks!
     
  2. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    36,819
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #2 Rifledriver, Apr 11, 2024
    Last edited: Apr 11, 2024
    Modifying a wet to a dry and doing it in the factory manner would be very difficult. The block is made different. It just would not be worth the trouble.

    The internal provisions for scavange pump mounting are not there. Its made for a windage tray that is not used and has a big hole in the side on the 5/8 bank where a big oil fitting goes. Its cast into the block. The front cover is completely different.
     
  3. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA
    Thanks. Is there a way to determine dry/vs wet from the outside other than the stamping since it seems to be missing the telltale digits? The car was advertised since 2015 as a dry sump conversion. But I'm just not seeing it. Admittedly, I don't know what I'm looking for as distinguishing characteristics.
     
  4. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    36,819
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #4 Rifledriver, Apr 11, 2024
    Last edited: Apr 11, 2024
    The front cover is very different. Facing the front of the engine if to the right of the crankshaft it has an oil line attached to the front cover, thats what the dry sump looked like. Also on the side of the block there was a cast in boss to your left of the starter, near the middle with a large oil pipe fitting screwed into the side of the block for the oil scavange side of the plumbing. It should look like the block was designed for the fitting. The wet sump blocks do not.

    Short of pulling the engine and looking inside, thats all I can think of. Oh, and the 1/4 bank valve cover should not have an oil cap.

    I found pictures.
     

    Attached Files:

  5. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA
    I read about the oil-cap not being there on dry sump engines. Mine has one, but my engine has been so modified, who knows if they used a dry-sump cover. It's not well documented on invoices and FAI no longer has any details on file. So would the dry sumps then have a separate oil reservoir with a separate fill cap? I'll have to lift it this weekend to look for those block features. Can't see them from above. I was hoping that engine number might be a tell.
     
  6. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA
    Thanks for the photos.
     
  7. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    36,819
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #8 Rifledriver, Apr 11, 2024
    Last edited: Apr 11, 2024
    Well yeah. A dry sump has a big oil tank at the left rear of the engine compartment with an oil cap. Very hard to miss.

    If you do not have a very obvious oil tank it is not a dry sump car. Its not like you can hide it.

    Its the 1st USA 1978 car built in June 77. Yellow with black interior.

    Are you sure its dry sump?
     
  8. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA
    Yeah. All sorts of funny things about this car. It’s titled as a ‘77. Build date as you noted was June 77 and it’s a non cat spec.

    A lot of old online sales info shows it as a dry sump conversion with a lot of mods. It does have the P-6 cams verified by the stamp on them.

    What it’s actual bore is, is also a mystery. It rumbles like a big displacement engine though. Sure doesn’t sound like a 3L.

    Image Unavailable, Please Login



    Sent from my iPhone using FerrariChat
     
  9. bitsobrits

    bitsobrits Formula Junior
    Silver Subscribed

    Nov 12, 2011
    703
    Omaha, NE area, US
    Full Name:
    Steve
    Did Donnie Callaway tell you it was a dry sump? I'm not an expert, but your photo gives no indication your car is a dry sump car. Study Rifledrivers photos and compare them to your car, and unless there is a dry sump tank hidden somewhere, you have a wet sump engine.
     
  10. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA
    This is one of them on FChat from 2011. It's interesting. I don't think it is in fact a dry-sump at this point unless it was somehow modified. The old on-line links for that VIN show all the mods, but few describing dry-sump. Those are from here on FCHAT.

    https://saleofcar.com/ferrari-308-gtb/0111541

    http://www.finecars.cc/en/detail/car/391641/index.html

    At the end of the day, I just want to know what's inside so I know how to maintain it and what to tell my service shop.

     
  11. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA
    ;) No. I had to look him up once you posted that. There are some bizarre things about this car's history I've been trying to sort out.

    If you look closely at these two adds from the same time period, you will notice the photos are both taken at the same place and the cars oddly have similar mods.

    http://www.finecars.cc/en/detail/car/391641/index.html

    and

    https://davidsclassiccars.com/ferrari/19298-1977-ferrari-308-gtb-serial-number-22879.html
     
  12. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,587
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    The only places in the F documentation where I've run across those kinds of suffixes to the F106A are:

    116/75 OM covering standard (euro) dry sump 308GTB -- which clearly shows F106A021

    and

    155/78 OM covering standard (euro) dry sump 308GTB and standard (euro) wet sump 308GTS -- which only shows F106A02? in one figure, and doesn't seem to explain if they are marked differently.

    Even your 1-4 cam cover is US wet sump (with the cast in air pump mount), and the ads saying "all smog stuff removed" is also US wet sump.
     
    MaranelloMark likes this.
  13. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA

    Thanks. I was going off old FChat threads regarding the suffixes.

    Great point regarding the smog equipment.
     
  14. 4right

    4right F1 Rookie
    Rossa Subscribed

    MaranelloMark likes this.
  15. MaranelloMark

    MaranelloMark Formula Junior
    Rossa Subscribed

    Nov 24, 2019
    433
    Bay Area, CA
    This is excellent, gents! Thank you all!

    Mark


    Sent from my iPhone using FerrariChat
     

Share This Page