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Thread: FFR 33 Ford Hot Rod
          
   
   

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  1. #466
    wrp
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    Nearly finishing my job on the Vortec Heads. We had to modify them to meet the lift specs of the cam, plus while having them apart I wanted to replace the valve seats and check the valves then reseat them. We also had to modify the guides to meet the dimensions of the springs I am using as well as ensuring no coil bind. In an earlier video we cut out the old seats and installed the new ones. We installed new guides with brass runners.

    With the new seats in place we marked them and used a tool that inserted in the guide. The guides were new and tight. I learned this was an important step because seats that are not flat let one side or the other of the valve close first and that tends to try to bend the valve, a reason for a lot of carnage. The two shots below show the marked Intake seat before machining and the machined seat afterwards. You can see the marker below the seats in the second picture and can tell how much was machined. It took some effort to get the seat flat with the black marker off of the surface. The third picture is the tool we used. The long piece is to go into the guide while the cutting edge is on the right side looking at the picture. Notice how the tool cutting surface is concave which renders a convex surface on the face of the seat. The reason becomes obvious I hope later.

    IMG_3963.jpgIMG_3962.jpgIMG_3966.jpg
    Last edited by wrp; 12-31-2019 at 09:47 PM.
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  2. #467
    wrp
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    With the seats cut we took the valves and used an aggressive cutting compund with the stopper tool to insert them into the guides then hand finish a seal between the valve and the the valve seat. Essentially the seal is ground into the highest point of the convex surface of the seat. I have a piece in the video turning the valve by hand with the tool but do not have a picture of it. At any rate this is a finished job. On the second photo (5th) note the grey band around the valve. This is the seal. We inspected each closely uner a bright light. Sort of like fiberglass work, we were looking for high spots and low spots in the grey band as well as the consistency of the band width as well as a matching grey band on the seat in the head (next photo). So anyhow, 16 of these. We found several valves in these brand new heads where the grey band showed high and low spots so we had to rework the valves on a lathe. They were stainless steel. We tested each valve for seal with an air compresser and a jig, shown in the videos. My valve seats and seals are solid.

    IMG_3927.jpgIMG_3930.jpgIMG_3926.jpg
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  3. #468
    wrp
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    So that pretty much completed the bottom side. Next we turned to the valve guides and the spring seats. If you look closely at the guides, the larger is the stock guide and the smaller one is the machined guides we did. The limiting factor on these heads is the lift. About .450 is all they will take. My cam has a .450/.460 lift so we shortened the entire guide after it was installed. The wider area around the base of the guides is also too thick on the stock guide to allow the double springs to fit, so we had to cut down the diemeter on the bottom and lower the lip so the springs would not coil bind due to the retainer hitting the guide. Also, note the spring seat around the bottom of the guide, we had to widen that seat for the new springs to sit flat.

    IMG_3955.jpgIMG_3954.jpg
    Last edited by wrp; 12-31-2019 at 09:44 PM.
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  4. #469
    wrp
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    I am not pretending to be an expert on this. I have taken my time with a machine shop that was willing to let me watch, ask questions and even do some work. Like paying for a graduate level course at the local University. Here is the movie

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  5. #470
    wrp
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    I have been going through a set of SBC Vortec heads in preparation for instlalling them in my 355 Ci motor. Even with my flat tappet cam had too high a lift for any spare room for the heads which are limited to .450 lift. My cam was a .450/.460 lift so we went to a machine shop to prep the heads. The man who owned the shop was gracious and allowed me to participate in every step of the process. It was a better learning experience than any postgraduate program I have been in. In this segment, we are lapping the valves which essentially means establishing a seat on the heads for the valves to seal against. We had drilled out the old valve seats and replaced them, then recut them. Lapping w2as the final step and it is a good thing we decided to do it. Some of the valves, though from the factory and never installed, had flat spots on the seat area. Enjoy the video.

    https://www.youtube.com/watch?v=NLygbUZKshk
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  6. #471
    stovens's Avatar
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    Very cool to see how your measure the fit and seating of the valves.
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    " "No matter where you go, there you are!" Steve.

  7. #472
    wrp
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    Thanks, the surfacing machine is accurate enough to shave a mark from a magic marker off changing it from black to grey. I have not nearly shown the use if micrometers to determine the vale stem size of a number of other measurements.Essentially it took an entire day to hone the valve guids. Each one is matched to the valve that will go into it.

    IMG_3996.jpgIMG_3997.jpgIMG_4002.jpg
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  8. #473
    wrp
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    Installed the seals, valves, springs and retainers tody, Got the heads home.

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  9. #474
    wrp
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    One of my passions lately is taking pictures of the car with Flags flying in the background. Drove around Plano today snapping a few shots. Enjoy.

    IMG_4164.jpgIMG_4169.jpgIMG_4178.jpgIMG_4236.jpgIMG_4237.jpg
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  10. #475
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    Car Year, Make, Model: 34 Ford 3W Coupe Replica
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    Nice! Looks like that flag is as large as the car!
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  11. #476
    wrp
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    Quote Originally Posted by 34_40 View Post
    Nice! Looks like that flag is as large as the car!
    Actually, it is
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  12. #477
    wrp
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    So this has been my bucket list, not the car, the ability to work with people, learn, share, solve problems, and be proud of the result. Was thinking about the build the other day and if crossed my mind, the build is not about the car, it is about the people.

    Car-Show-Board-People-1.jpg
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  13. #478
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    very true!
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    " "No matter where you go, there you are!" Steve.

  14. #479
    wrp
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    So I have had a lot of fun going around shooting images of the car with an American Flag backdrop. It is interesting to note the number of businesses that display flags versus those that do not. It is also interesting to note those that display the flags with care and appropriateness. One particular private school near me does a fantastic job. The adminstrator in charge is very knowledgable and a genuinely nice person. I had notice their flag was beginning to fray and was getting tangled in the rigging so I went out and bought them a new one. They were very gracious and I enjoyed meeting and talking to them. The principal presented me with a note of thanks from each student in the school. I had not expected that and was frankly overwhelmed with gratitude. I think I have found a calling. Enjoy

    IMG_4270.jpgIMG_2720 copy.jpgFlag n Ethyl.jpgFlag Drawing-4.jpgIMG_4406.jpg
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  15. #480
    wrp
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    I am looking for a solution to the battery box in my 33. I have mocked one up, intending to construct it out of carbon fiber, but I wonder if any of you might have good looking solutions you have discovered or developed?

    IMG_5100.jpgIMG_5107.jpgIMG_5114.jpg

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