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Technical Breathing life into a 283 - Jr Fuel Destined

Discussion in 'The Hokey Ass Message Board' started by 402BOSSMAN, Nov 12, 2017.

  1. dreracecar
    Joined: Aug 27, 2009
    Posts: 3,183

    dreracecar
    Member
    from so-cal

    True, but the original build changed direction and not what was originaly started, its just an engine now built by a race engine shop
     
  2. DDDenny
    Joined: Feb 6, 2015
    Posts: 15,160

    DDDenny
    Member
    from oregon

    Nick's the boss!
     
  3. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    Speedway did a nice job on the video. Alot of those talking points are what myself and Wyatt discussed. Thanks for sharing that. I think they are headed in the right direction with the market they are after.
     
    loudbang and Deuces like this.
  4. Deuces
    Joined: Nov 3, 2009
    Posts: 20,863

    Deuces
    Member
    from Michigan

    Teach'em while they're young!!!... How is he on a lathe?????.... :)
     
    loudbang likes this.
  5. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    The build hasn't changed direction. I'm still moving forward with what I originally intended, the only variable up in the air for me is nitromethane. With Nitro costing $2k for a drum currently that's a big portion of it as well. The other engine (new Bowtie Block) I started is a different deal and I won't be posting anything on here about.
     
    Last edited: Dec 3, 2019
  6. dreracecar
    Joined: Aug 27, 2009
    Posts: 3,183

    dreracecar
    Member
    from so-cal

    A 50gal drum of Nitro from Dale Pulde is around $1400 saving you close to $600 just so you know
     
  7. DDDenny
    Joined: Feb 6, 2015
    Posts: 15,160

    DDDenny
    Member
    from oregon

    Plus a visit from Homeland Security.
     
    Deuces likes this.
  8. dreracecar
    Joined: Aug 27, 2009
    Posts: 3,183

    dreracecar
    Member
    from so-cal

    If you split the drum with another (like we do for Cacklefest) you are not under DHS proticol
     
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  9. saltflats
    Joined: Aug 14, 2007
    Posts: 10,899

    saltflats
    Member
    from Missouri

    How many passes could Nick get out of 25 gallons?
     
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  10. Deuces, Bowtie Coupe and loudbang like this.
  11. DaveyJonez
    Joined: Feb 20, 2006
    Posts: 425

    DaveyJonez
    ALLIANCE MEMBER
    from Houston

    Definitely not destined for anything Jr Fuel that I can see. More like injected alcohol bracket car destined- perfectly cool, not what drew me in when I saw the title.


    Sent from my iPhone using H.A.M.B.
     
  12. dreracecar
    Joined: Aug 27, 2009
    Posts: 3,183

    dreracecar
    Member
    from so-cal

    8 to 10 DHS holds a 40gal threshold
    Most Nos Fuel teams order fuel (full 50g drums) and have it delivered at the track, and as long as they have their DHS fuel card ID, there is no issue and at big events there are DHS people there. Cackle guys usually buy the leftovers so the teams don't have to store it, but we still need the DHS ID card
     
  13. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    Made some more progress finally. Got the block up on my decking fixture I made with a BHJ Block Tru. A 2" precision ground shaft goes through the mains with centering rings (rings sized for certain bore sizes) and leveled the block off the Block Tru plate. From there I take some material off until it cleans everywhere and measure the deck height with a special depth micrometer. From there I can determine how much I want to take off. This block ended up with a 9.010 deck height.
    20200217_192722.jpg
    20200217_194709.jpg
    IMG_20200217_214603_780.jpg
    Now that its decked true and square front to back and side to side I can bore the block next. I will go .060 over to work with the pistons I have.
     
  14. lumpy 63
    Joined: Aug 2, 2010
    Posts: 1,433

    lumpy 63
    Member

  15. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

  16. DDDenny
    Joined: Feb 6, 2015
    Posts: 15,160

    DDDenny
    Member
    from oregon

    Nice work Nick!
    Proof that not all machine work is equal, the guys here with the $75 283 and the like would never get the reasoning behind going the extra mile.
    I'm sure you get your share of tightwads wanting to have you do shortcut machine work.
     
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  17. rod1
    Joined: Jan 18, 2009
    Posts: 928

    rod1
    Member

    What a beautiful foundation.Thanks for sharing.
     
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  18. loudbang
    Joined: Jul 23, 2013
    Posts: 37,615

    loudbang
    Member


    What are the brass plugs blocking off?
     
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  19. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    Water passages are getting restricted, injected alcohol - 90% out there don't need to do this as its specific to what I'm doing.
     
  20. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    I don't shortcut, if that is what someone wants I'm not your guy. At least that I what I tell em.
     
    Last edited: Feb 18, 2020
  21. Roothawg
    Joined: Mar 14, 2001
    Posts: 21,764

    Roothawg
    Member

    Man, I wish you were closer.
     
  22. Blues4U
    Joined: Oct 1, 2015
    Posts: 5,777

    Blues4U
    Member
    from So Cal

    Different needs for different applications. The guys that think you have to do all of this for a jalopy you use to cruise to the burger joint don't get the reasoning behind a $75 283 either.
     
    Deuces, Truckdoctor Andy and loudbang like this.
  23. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    So I've been dancing around what cylinder head to go with on this engine. Been back and forth a bunch of different ways. I prefer to stay cast iron to help keep heat in the engine. Really didn't like the idea of reworking some factory castings to the extent that I need for this piece to make the steam I'm after. Just don't think I can get the airflow requirements that I need without major surgery and welding/brazing. As a personal preference I wanted to keep it all "GM" as well and not go to a Dart, World, etc cylinder head. So the hunt began to find a cherry set of discontinued Bowtie #034 heads. Luck would have it my good friend Adney Brown of Performance Crankshaft had just the set on his shelf and we struck a deal.
    20200302_185411.jpg
    20200302_185426.jpg
    So with these heads I plan to roll them over 1° which will be about .150 that gets angle milled. I will have to correct the intake face and spot face all of the head bolt holes in the process. This will shrink the combustion chamber down a bunch so I can get as much compression that I can get. That will be the first step taken on these heads when I can find some time again.
     
  24. Andamo
    Joined: Jan 10, 2006
    Posts: 503

    Andamo
    Member

    Nick, could you explain what you mean by spot facing the head bolts ? I have an idea what you mean, but just need confirmation. Thanks.
     
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  25. joel
    Joined: Oct 10, 2009
    Posts: 1,950

    joel
    ALLIANCE MEMBER

    Those are pretty small chambers as is. Were those meant for 305 engines? What about cutting the intake manifold instead, so the tapped holes stay perpendicular to the gasket surface?
     
    loudbang likes this.
  26. DDDenny
    Joined: Feb 6, 2015
    Posts: 15,160

    DDDenny
    Member
    from oregon


     
  27. dirty old man
    Joined: Feb 2, 2008
    Posts: 8,912

    dirty old man
    ALLIANCE MEMBER

    Nick I have encountered angle milled heads before as used by dirt racers in classes that restricted heads by numbers instead of modifications, so I understand about spotfacing the head bolt holes, but am I reading this right that an angle change of 1* will result in .150 off the exhaust side of the heads? What is head cc now and what do you anticipate cc's after angle mill?
     
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  28. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    When you angle mill the head like this you have to machine the head bolt hole top flat again (parallel to deck).... ie spot face. That way the clamping force is even under the bolt head & washer.


    This is a aftermarket/over the counter Bowtie head, never on a production engine. I believe they are around a 64cc chamber now, I'd like to be around a 50cc after angle milling. The purpose of correcting the intake flange is because then I won't need a dedicated intake manifold. So at that point anything that is a for a standard port SBC head can bolt to it. All of this is common machine work for a race engine.
     
  29. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    I have the option to roll it 1° or 1.5°. At 1° it's usually about .125 off, at 1.5° its .200 off and will end up around a 49cc from a 64cc. Not sure what I will do just yet. But to answer your question more material is removed from the spark plug side of the chamber to do this. Then the intake flange gets angle corrected and you end up running a .125 thick intake gasket instead of a standard .062 thick. Dart and RHS offered these heads in a 49cc/50cc chamber that were a 21.5° valve angle right out of the box. It allows high compression with a flat top. In my case having such a short stroke and bore I need all the compression I can get so if I can get 50cc out of these I will be happy.
     
  30. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 343

    402BOSSMAN
    Member

    Well, made some more progress again. Ordered a ARP stud kit and decided to hone the block.
    20200501_182133.jpg
    Ended up going to a 3.940 bore which will require me to get a different set of pistons. I'm fine with that as I have another 283 block these original Arias pistons can go in.

    After the honing I finally got to install my lifter bushings and hone those to size.
    IMG_20200502_020925_259.jpg
    As I post this I'm heating up my spraywash cabinet for a quick bath and then I can deal with a few more remaining items I need to tackle. The block portion is nearly complete!
     
    Bowtie Coupe, TFoch, Deuces and 12 others like this.

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