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Technical rerouted flathead ford exhaust ports?

Discussion in 'The Hokey Ass Message Board' started by flathead 37, Dec 16, 2014.

  1. flathead 37
    Joined: Aug 27, 2012
    Posts: 169

    flathead 37
    Member

    so as anyone ever heard of or seen anyone do this? i know flathead cadillacs already have the exhaust coming out the top. it would be pretty neat to do this to get a little more power of the ol' flatty being that they originally have such crummy exhaust flow. i saw an old picture of someone that did it, looked like back in the fifties. post some pictures or your thoughts on the matter,
    cameron
     

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  2. Bearing Burner
    Joined: Mar 2, 2009
    Posts: 844

    Bearing Burner
    Member
    from W. MA

    Been done for years with various results.. Was called a Tijuana flathead in the '50. Best results by Ron Main who reversed intakes and exhaust added a supercharger and ran over 300MPH in a streamliner at Bonnevile a few years ago.
     
  3. And another.... DSC00118.JPG
     
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  5. alchemy
    Joined: Sep 27, 2002
    Posts: 14,406

    alchemy
    ALLIANCE MEMBER

    Dozens of flatheads have been built over the years with rerouted exhaust ports. Ranging from the easy one out the top center, to out the ends of the block, to the full-bore Flatfire style with lotsa welding and reconfiguring.
     
  6. Diavolo
    Joined: Apr 1, 2009
    Posts: 805

    Diavolo
    Member

    You are so far from right, you aren't even wrong.

    He was asking about flatheads, that is clearly not a flathead.

    Scrolling down, #357 does fit the bill though :)

    The premise was that the exhaust was restrictive while the intake was free flowing. Restrictions in the intake could be compensated by compression (a blower) but not by porting. Taking advantage of the free flowing "exhaust" of a reversed engine solved both issues at the same time.
    It looks cool, too.
     
    Last edited: Dec 17, 2014
  7. Yep been done before and gonna be done again...........
    [​IMG]
    [​IMG] [​IMG]
     
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  8. I remember a flatty dragster like that. Ran So Cal back in the 50's. Can't remember the name of the owner or car. (Oldtimers setting in). Maybe someone else will remember the dragster.
     
  9. flathead 37
    Joined: Aug 27, 2012
    Posts: 169

    flathead 37
    Member

    [​IMG]
    here is one with the upper pipe. that doesnt seem like it would do that much good but it was simple.
    [​IMG]
    and this one has got both the top, the side, and the stock pipes,
    anybody have any more photos or input or pictures of how its done?
     
  10. flathead 37
    Joined: Aug 27, 2012
    Posts: 169

    flathead 37
    Member

    [​IMG]
    heres another
     
  11. 55willys
    Joined: Dec 7, 2012
    Posts: 1,596

    55willys
    Member

    That is how I plan to run the Flathead in my 29 pickup. The intake and exhaust valves are the same size so I will have a cam with the lobes swapped intake for exhaust. It will have a crank driven blower with a quick change box on it to adjust the boost. 2 SU side draft carbs and the blower outlet going into the exhaust ports and the exhaust exiting through the intake ports. The other advantage that is gained is not having hot exhaust running through the water jacket. Plus it will just look cool. Jim Ford
     
  12. tubman
    Joined: May 16, 2007
    Posts: 4,412

    tubman
    ALLIANCE MEMBER

    I too, would like to know what else has to (or should) be done to add the fourth exhaust port at the top of the engine. I am not a fan of dividers on a conventional engine, but think something similar would be used in the engine to force one of the center cylinders to exhaust out the regular center exhaust port, while forcing the other cylinder to exhaust out the top, thereby completely separating the exhaust pulses. From the one pic earlier in this thread, the top port looks like it could be made large enough to match the rest.
     
    Last edited: Dec 21, 2014
  13. flathead 37
    Joined: Aug 27, 2012
    Posts: 169

    flathead 37
    Member

    but the top exhaust port that runs into the intake is really small. I don't understand how the hole pictured in Roseville Charles picture would work? it looks like you would have to do some welding there.
     
  14. tubman
    Joined: May 16, 2007
    Posts: 4,412

    tubman
    ALLIANCE MEMBER


    I think that goes without saying.
     
  15. This type of work was done back when you had to "think" and do your own engineering to gain horsepower, before the time of 1-800-buy-motor!

    Bill
     
  16. not only welding but this block will be filled with alu its for racing only not something you would do with a street engine................
     
  17. flathead 37
    Joined: Aug 27, 2012
    Posts: 169

    flathead 37
    Member

    [​IMG]check this one out
     
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  18. RichFox
    Joined: Dec 3, 2006
    Posts: 9,766

    RichFox
    ALLIANCE MEMBER

    The first pictures are of Ron Main's and Jimmy Stevens flatheads. Both of them have gone 300 on the salt. Ron's uses the intake ports for exhaust and has new intakes welded in. Jimmy's engine uses the original intakes as is and has new exhaust welded in. Perhaps that is John Bradley's block, post #9, with the exhaust at each end, up through the heat riser and out the stock center port. Several of those have been built. Everyone I have seen were full of aluminum. So you pays your money and takes your choice. If you are up for all that, consider cam timing events. Assuming you are using a conventional lobe with split overlap, as are almost all flathead cams, You can replace the direct gear drive with a chain, jessel belt drive, or pete Jackson/Milodon gear drive with idlers. This will reverse your cam rotation and reverse which valve follows which. So you have a reverse port cam. Almost any cam drive gears and chain might work, or OHC pulleys and proper length belt. Or there is always the hand full of $100 bills, billet cam way.
     
    Last edited: Dec 22, 2014
  19. John Bradley. That's who I couldn't remember earlier. Thanks for jogging my memory Rich.
     
  20. flathead 37
    Joined: Aug 27, 2012
    Posts: 169

    flathead 37
    Member

    heres one in a belly tank!
    [​IMG][​IMG]
     
  21. RichFox
    Joined: Dec 3, 2006
    Posts: 9,766

    RichFox
    ALLIANCE MEMBER

    When I was much younger I went to half Moon Bay to see John Bradley and his worlds fastest flathead. He was running in what now would be Top Fuel and was going around 150-160 in the 9s. years later i was in line at El Mirage and the lakester behind me said John Bradley on it. So I told the guy about going to HMB to see the Genes Brake Shop Special car and the guy said, "yeah. That was me". pretty cool i thought.
     
  22. flathead 37
    Joined: Aug 27, 2012
    Posts: 169

    flathead 37
    Member

    how far can you go without filling your block? Is the exhaust port that runs around the rear cylinder go directly to the outer wall? can you just drill into it? is there interface with the water pump
     
  23. Rick Schnell's 930+ Hp, 7 sec Slider Dragster.

    [​IMG]
     
  24. flathead 37
    Joined: Aug 27, 2012
    Posts: 169

    flathead 37
    Member

    pretty awesome to see a flatty making that much power! I believe that that guy lives in Anoka or elk river which is only about 30 minutes from me
     
  25. cheap-n-dirty
    Joined: Jan 28, 2002
    Posts: 662

    cheap-n-dirty
    Member

    Tom Beatty in 1947.

    1-11-2014 11;03;40 AM (640x416).jpg
     

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