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Offy flathead intake question

Discussion in 'The Hokey Ass Message Board' started by barry0164, Jul 20, 2011.

  1. barry0164
    Joined: Dec 30, 2007
    Posts: 10

    barry0164
    Member

    [​IMG]
    Hi all, I have bought an offenhauser intake manifold for my flatty.
    Pretty much similar like the one in the picture ( thnx google)
    I noticed the 2 holes on the top front side, far left in the picture, which my original manifold doesn't have. Can anyone tell me what the purpose is for these, or do they need to be blocked off with something?
    I ***ume one could be for filling oil, but why isn't a cap provided then..:confused:
    Thanks for the help guys!

    Cheers from holland!
     
  2. Flatmik
    Joined: Nov 21, 2010
    Posts: 19

    Flatmik
    Member
    from France

    I believe one is for the crankcase breathing (the one on the rear or on the side), the other one, I never knew ... It is a pipe designed for the late flathead (49-53). Works well also on a french flat.
     
    Last edited: Jul 20, 2011
  3. Aquaroscoe
    Joined: Apr 13, 2006
    Posts: 315

    Aquaroscoe
    Member

    The one above is for an 8BA and includes some additional holes for the road draft tube. I think yours is for an earlier flathead version that did not require these
     
  4. roseville carl
    Joined: Dec 29, 2008
    Posts: 5,213

    roseville carl
    Member

    you have a maifold for an 8BA 49-53 flattie............holes for road draft tube and oil fill
     
  5. Tank
    Joined: Nov 8, 2002
    Posts: 749

    Tank
    Member

    The vertical one is for your "road draft tube" aka crank case breather, the angled one is your oil fill tube and also a breather all in one. This is a '49-'53 intake. If your original doesnt have these its a '48 and earlier intake.
     
  6. tommy
    Joined: Mar 3, 2001
    Posts: 14,756

    tommy
    Member Emeritus

    [​IMG]

    As said they are for the road draft crankcase ventilation system. This shows the air flow through the engine.
     
  7. barry0164
    Joined: Dec 30, 2007
    Posts: 10

    barry0164
    Member

    Well, that clarifies things! Thanks all.

    I have found my flathead being a 1953 engine, which came from a belgium ambulance truck from the military. (Called a Ford Keulen)
    Here's a picture:
    [​IMG]

    Therefore I ***umed I rerquired a1953 manifold.

    An oil filling hole is welcome, because my model doesn't seem to have it.
    The other hole I will try to make a plug for then.

    I already found out my ignition stystem is also not in the normal position, I have relocated that to the front-left.
    I ***ume there are more differences compared to the USA engines, but hey, it is a Flatty :D

    Thanks again!
     
  8. WOW dizzy at the back. I would have left that there if you had room, just to mess with people :)
    .....and an extended bellhousing.
    What a strange beast!
     
  9. Dynaflash_8
    Joined: Sep 24, 2008
    Posts: 3,048

    Dynaflash_8
    Member
    from Auburn WA

    i would have left that as well!
     
  10. tedjg
    Joined: May 4, 2010
    Posts: 21

    tedjg
    Member

  11. 51 MERC-CT
    Joined: Apr 5, 2005
    Posts: 1,594

    51 MERC-CT
    Member

  12. tubman
    Joined: May 16, 2007
    Posts: 8,218

    tubman
    ALLIANCE MEMBER

    What a weird duck! Could you post some more pictures? I'd like to see more detail. Kinda like a French flatty. German maybe?
     
  13. 2002p51
    Joined: Oct 27, 2004
    Posts: 1,362

    2002p51
    Member

  14. propwash
    Joined: Jul 25, 2005
    Posts: 3,857

    propwash
    Member
    from Las Vegas

    Your flatty is too cool. That rear-mounted distributor is the neatest. Any way that could be left there and used would be a serious head-scratcher for onlookers with any Ford flatty knowledge. Are the threads metric? Are there any identifying numbers on the block?
     
  15. barry0164
    Joined: Dec 30, 2007
    Posts: 10

    barry0164
    Member

    Funny to this flathead is not common overseas.

    I was looking for a flathead to put in to my '29 Tudor project car. I found it in Belgium. The flathead was pulled from the "ford Keulen" which looked like this:
    [​IMG]
    So it was a small truck.

    I heared the engine was built in germany, but all threads are not metric.
    I ordered all parts in the usa (heads, manifold, headstuds, igition for front mount) and everything is pretty much bolt on.
    The codes on the head: "G29T-6050B 22D55"
    Here are some more pictures:
    [​IMG]
    [​IMG]
    [​IMG]


    [​IMG]


    Since ther is very little room to put a flatty in a Tudor, leaving the ignition on the rear was not really an option, although adjusting timing while driving would be cool...:rolleyes:
    The ****** was a manual 4-speed which also came from the Ambulance.
    It's very bulky, so I swapped it for a smaller manual 3-speed.
    All is still very early in the build (my first) but I am looking forward to fire it up for the first time shortly.

    Thanks also for pointing out the plugs, they look pretty simple to make myself.
    So if anyone would like some more info on my flatty, please let me know, H.A.M.B. for me is a great way to find information and tips, so I am glad to do something in return!

    cheers

    Barry
     
  16. CanUFelix
    Joined: Jan 29, 2009
    Posts: 503

    CanUFelix
    Member
    from venice CA

    That's a crazy looking motor Barry, really interesting.

    Its funny but i was about to ask a similar question but in reverse. I have the chance to pick up an inlet and two carbs for a great price. I want to put it on my 53 merc engine that HAS the road draft tube but the twin carb manifold i'm being offered doesn't.....can i use it? or do i have to use one like the one Barry posted at the top of this thread.....sorry for jumping on your thread Barry.

    cheers

    felix
     
  17. Ole don
    Joined: Dec 16, 2005
    Posts: 2,915

    Ole don
    Member

    If you leave the oil fill at the rear and use a filtered cap that will p*** air, you can plumb a PCV in the intake over the hole that goes down to the crank case. Plug the other hole with a welch plug.
     
  18. ventilo
    Joined: Aug 25, 2009
    Posts: 251

    ventilo
    Member

    The Cologne built G29T flathead is a pretty neat engine, but you'll experience some clearance with the rear mounted dizzy and your bulkhead.
     
  19. tubman
    Joined: May 16, 2007
    Posts: 8,218

    tubman
    ALLIANCE MEMBER

    Thanks for the extra pics, Barry. I am amazed at what turns up out there in the way of flatheads. Do you know if the pitch of the cam and crank gears is like the early V8's or the 8BA's? I imagine that would have a lot to do in determining which front mounted ignition to use.
     
  20. OoltewahSpeedShop
    Joined: Oct 18, 2007
    Posts: 3,103

    OoltewahSpeedShop
    Member

    Damn, thats cool. I've never seen a flathead with the distributor mounted back there. Is that a foreign only block or did some of the U.S. big trucks have the rear mount distributor? I'd love to have one.
     
  21. Doc.
    Joined: Jul 16, 2005
    Posts: 3,558

    Doc.
    Member Emeritus

    A rear Dizzied flatty. Who'd -a-thunk it.
     
  22. telecustom
    Joined: Feb 17, 2009
    Posts: 336

    telecustom
    Member
    from Langey, BC

    Nice find on the 337ci. big block. Great to see one in that good of shape. I think it sits at 149hp, bored out and super charged there's no telling where it would stop.
     
  23. telecustom
    Joined: Feb 17, 2009
    Posts: 336

    telecustom
    Member
    from Langey, BC

    OH only 24 studs.. that is a weird one. I don't know what to think...
     

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