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Projects 1931 Model A Coupe Y-Block Build (Father&Son)

Discussion in 'Traditional Hot Rods' started by NathanxStewart, Jan 4, 2016.

  1. Thank you sir! They actually go over the frame and just because we think it looks nicer.
     
  2. It took us a while! Haha. Thank you!
     
  3. mike bowling
    Joined: Jan 1, 2013
    Posts: 3,547

    mike bowling
    Member

    You gonna leave the "paint" the way it is?? That coupe has an attitude 10 ft. wide right now.
    Great job. ( I think someone already told you that, but it's a fact!)
     
    metal man and NathanxStewart like this.
  4. Nathan,
    Was wondering why on psgr side of the engine your header pipes cross over on the 2nd and 3rd exhaust port. does it have to do with the firing order of the y-block? Or are you trying to attain a certain exhaust tone? Keep up the great looking work!
    Brad.[/QUOTE]

    It has to do with the firing order! Here's a drawing of how it works if are curious or need to know. You see how each head has two Y's? The object of tri Y headers is for the two exhaust valves that feed any one of those Y's to be as far apart on the firing order as possible. That increases the velocity of the exhaust gases leaving through the header, because there is only exhaust from one valve going through any Y at any time. Then they all come together in the third Y.
    4 into 1 type headers with collectors are really better suited for race cars that are running high RPM all the time.
    ImageUploadedByH.A.M.B.1454024961.212241.jpg
     
  5. Thank you sir!
     
  6. Hey thanks man!!
     
  7. Me too[/QUOTE]

    It has to do with the firing order! Here's a drawing of how it works if are curious or need to know. You see how each head has two Y's? The object of tri Y headers is for the two exhaust valves that feed any one of those Y's to be as far apart on the firing order as possible. That increases the velocity of the exhaust gases leaving through the header, because there is only exhaust from one valve going through any Y at any time. Then they all come together in the third Y.
    4 into 1 type headers with collectors are really better suited for race cars that are running high RPM all the time.
    ImageUploadedByH.A.M.B.1454025863.662523.jpg
     
  8. No I think I'm going to do a two tone, thorn brown, and black. It's one of the original Model A colors. My dads Model A phaeton is that color and my grandpas Model A coupe was that color from '78-'81. I just think it'd be cool to do mine that color. Plus it's a good color combination, I really like earth tones. Thank you again! Hahah I think just a couple of times but I won't get tired of hearing it!
     
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  9. Had a good friend machine some header caps for me
    ImageUploadedByH.A.M.B.1454026727.907558.jpg
    ImageUploadedByH.A.M.B.1454026823.391436.jpg
     
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  10. Rickybop
    Joined: May 23, 2008
    Posts: 6,735

    Rickybop
    Member
    from Michigan

    Vroom.......vroom..............................VROOOOOOOOOOOM!
    BLAT!-BLAT!-BLAT!-BLAT!-BLAT!-BLAT!-BLAT!
    ERRRRRRRRRRRRRRRRRRRT!!!!!!!
    WAAAAAAH!:eek: WAAAAAAH!:eek: WAAAAAAH!:eek: WAAAAAAAAAAAAAAAAAH:eek:!...

    :)
     
  11. Dino 64
    Joined: Jul 13, 2012
    Posts: 1,898

    Dino 64
    Member
    from Virginia

    I like them even more now!
     
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  12. metal man
    Joined: Dec 4, 2005
    Posts: 2,949

    metal man
    Member

    Because of the caps, or because of Rick's wonderful interpretation ?
     
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  13. Dino 64
    Joined: Jul 13, 2012
    Posts: 1,898

    Dino 64
    Member
    from Virginia

  14. Had the sun visor louvered!
    ImageUploadedByH.A.M.B.1454295798.390081.jpg
     
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  15. Jake Sippl
    Joined: Nov 11, 2015
    Posts: 267

    Jake Sippl
    Member
    from Detroit MI

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  16. Super Streak
    Joined: Nov 22, 2011
    Posts: 259

    Super Streak
    Member
    from Florida

    That is a very impressive build, it's great to see your keeping it all Ford. Good luck with it and keep up the great work!
     
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  17. Blues4U
    Joined: Oct 1, 2015
    Posts: 4,960

    Blues4U
    Member
    from So Cal

    It has to do with the firing order! Here's a drawing of how it works if are curious or need to know. You see how each head has two Y's? The object of tri Y headers is for the two exhaust valves that feed any one of those Y's to be as far apart on the firing order as possible. That increases the velocity of the exhaust gases leaving through the header, because there is only exhaust from one valve going through any Y at any time. Then they all come together in the third Y.
    4 into 1 type headers with collectors are really better suited for race cars that are running high RPM all the time.
    View attachment 3119342 [/QUOTE]

    They actually number the cylinders down each bank like that? I'm not familiar with Y block engines, but on most V configuration engines I'm familiar with the cylinders are odd numbered on one bank and even numbered on the other. So 1 & 2 would not be next to each other, each is on a different bank.
     
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  18. I really like some details on your project, especially the radiator inlet, the filling reservoir and the fan shroud
    We've made one for my modified but to hide the electric fan (yes I know... it's not so cool :/)

    mini-2013-07-22 12.06.45.jpg
    In place :

    mini-2013-07-22 12.26.07.jpg

    I also have a A coupe project with a Y-block engine so I will follow yours with interest :)
     
  19. metal man
    Joined: Dec 4, 2005
    Posts: 2,949

    metal man
    Member

    They actually number the cylinders down each bank like that? I'm not familiar with Y block engines, but on most V configuration engines I'm familiar with the cylinders are odd numbered on one bank and even numbered on the other. So 1 & 2 would not be next to each other, each is on a different bank.[/QUOTE]



    Yep, just like a flathead... And most other Ford V8's
     
    Last edited: Feb 1, 2016
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  20. metal man
    Joined: Dec 4, 2005
    Posts: 2,949

    metal man
    Member

    Here you go, Blues4u. I'm not sure why it's so blurry, but I think it's readable.
     

    Attached Files:

    Last edited: Feb 1, 2016
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  21. Blues4U
    Joined: Oct 1, 2015
    Posts: 4,960

    Blues4U
    Member
    from So Cal

    Thanks, I learned something today, so whatever else happens the day is a success!
     
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  22. Thanks Jake!
     
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  23. Thank you! I like old ford parts and that's what was free! Haha
     
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  24. Thank you! Nice that looks good. Hey an electric fan still gets the job done! Any pictures of the coupe project? Love to see them.
     
  25. Fabricated brackets for my front brake hoses to mount to.

    ImageUploadedByH.A.M.B.1454382542.223978.jpg
    ImageUploadedByH.A.M.B.1454382579.177761.jpg
    ImageUploadedByH.A.M.B.1454382629.764595.jpg
     
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  26. Blue One
    Joined: Feb 6, 2010
    Posts: 10,780

    Blue One
    ALLIANCE MEMBER
    from Alberta

    I like the exhaust system except for one thing, the crossover pipe.
    I have been told over and over again by many old time hot rodders that a flathead and or a Y Block will sound better without a crossover.
    So, on my RPU, no crossover.
    The stainless looks good, I went with steel and will have the whole exhaust system ceramic coated. They do a nice job and the coating is inside as well.
     
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  27. From our experiences, crossover pipes always sound better with whatever engine and it makes more power in most cases as well. I guess it depends on what sound you want. My headers will be ceramic coated inside and out, but the stainless will be left bare.
     
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  28. Blue One
    Joined: Feb 6, 2010
    Posts: 10,780

    Blue One
    ALLIANCE MEMBER
    from Alberta

    Well, that may be true for modern engines as for power production, but I have some friends who grew up with the Flatheads and hot rodded them.
    They will tell you otherwise as far as power or sound goes.
     
    NathanxStewart likes this.
  29. Yes of course, but the frame at this time... I'm working to rebuild my old farm since one year and that takes all my time.

    The idea is here :
    test-c15.jpg

    And 2 piccs from the frame :

    cha192.jpg
    cha212.jpg

    The build thread is here :
    http://www.jalopyjournal.com/forum/threads/no-compromise-ford-a-coupe.924570/

    Thanks for interest :)
     
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