1. Mopar Sam

    Mopar Sam Well Fed Member

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    A little background on how I got my heads.

    I traded a set of never used early W2s and a couple hundred bucks for the w7s at Indy meet. I picked up the W2s from a craigslist ad for $300. Had to drive 15 minutes to get them. So, I don't have much in the W7s yet.

    I will probably lose the 3/8 guides and use 11/32 or 5/16, depending on what valves I find.

    Thinking 2.1 or 2.125 intakes. And Yes Yellow Rose, 50 degree seats.

    These will be overkill for me, not sure what they will go in, but I will drive it a lot.

    Ritter told me that the 7s did not have the porosity problems that the 5s had, and he knew the guy I got them from and said they would be good so I made the trade.

    This will be a while before its built, I want to get a motor in the sweptline first.
    I miss driving it. I would really like to put the W7s in my 68 Valiant or my gutted 72 Duster. Both cars are in rough shape, but so am I.
     
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    • Mopar Sam

      Mopar Sam Well Fed Member

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      I am a local 204 laborer turned ( don't kill me, it pays better) safety man.
      I still work as a laborer sometimes, but it kills me. We lost our 30 and out or I would be retired.
      I am currently doing safety 3 days a week for a union electric contractor on a project in Bloomington IN.
       
    • Go Mango

      Go Mango Never enough beer...

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      If its Electric Plus I'm gonna crap.
       
    • Mopar Sam

      Mopar Sam Well Fed Member

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      Pm'd, Different contractor.
       
      Last edited: Jan 14, 2020
    • smokindust

      smokindust Well-Known Member

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      Yeah rum
       
    • A body

      A body SLO-KID

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      3929839e.jpg

      oh W5..... how you let me down. I’ll back up Mr Millers weld fail story.
       
    • yellow rose

      yellow rose Doctor of Thinkology.

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      I got lucky. I could at least weld mine. They were pretty porous, but I got it done.
       
    • yellow rose

      yellow rose Doctor of Thinkology.

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      Whose rockers are those. They look pretty dang nice. What happened to your heads??
       
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      • A body

        A body SLO-KID

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        the rockers were Erson.... Steve Tanzi found a couple sets as the ship was sinking in Carson City. $700

        Back in the stone template era at Moparts, Ryan (SDSS) had a group buy in for W5 cnc porting... I acquired this set from an ARCA racer in MI for cheap and sent em to PA. Within 50 passes there was water getting in cyl 3. #3 port was leaking... talked to Ryan J, sent the head back, and it was returned epoxied (type unknown). Engine was reassembled, with new lifters and pushrods (six cracked lifters...suspected harmonics) and ran another 150 passes before my dad called and said the car died on the return road and wouldn't crank. A few days later he called with news of #3 full of water. Engine pulled, tore down and I started making some phone calls (Ryan put me on “no contact” at this point). I spoke with Larry Demers in Iowa and he had a guy that had brought Brodix sprint car heads back from the dead (big logistics pita... dad in SoDak, me in AZ). Sent the head to Iowa.... after a month the guy gave up. Basically the more he welded, the more it crumbled. So I got a new W5 pen holder at work.

        Now if this wasn’t bad enough, I sold the remaining head to a racer in WA for a spare. My dad boxed it up, and shipped it.... and then I got “the call”...... yes, 1 PO’ed/worried buyer. Head had cracks around 5 of the guides (yeah Ryan put guides in them). So as I was discussing this, I drug the other head of the bench and sure enough.... more cracks. Now mind you many were quick to point at Ryan, but to be honest, putting guides in these heads was probably like pressing guides into a fortune cookie.... expensive ordeal.

        the heads in the picture above were set #2.... I was going to do a build with them, but in conversation with my current builder he basically told me straight up....”didn’t you learn anything the first time??” . So much love for the W5.
         
      • yellow rose

        yellow rose Doctor of Thinkology.

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        That's another issue for those heads. The heads are way too thin across the top of the ports and rocker stands.

        When you start raising the port, the head is so thing in the spring pocket and the stands and the rockers are pulling up across the top of the ports and you start cracking guides from everything moving around.

        There is a ton of issues with the W5. The W7 as far as I know addressed most of them. Why Chrysler didn't move forward with the heads I can't say.
         
      • SwedishViking

        SwedishViking Well-Known Member

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        Is the problems with the w5 still there with the blue plugs casting or is it better?
         
      • rumblefish360

        rumblefish360 So close, yet so far away

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        Sometimes. Couldn’t tell ya how often though.
        Mine did. They are the blue plug. Hope the epoxy holds up.
         
      • rumblefish360

        rumblefish360 So close, yet so far away

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        Ha ha ha ha, I gotta show you a little something with the quote tags.
        @yellow rose Head shots/pictures?
         
      • yellow rose

        yellow rose Doctor of Thinkology.

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        I forgot to take them yesterday. I have to drive an hour and some today to get some heart test.

        First thing when I get back I'll get the pictures.
         
      • rumblefish360

        rumblefish360 So close, yet so far away

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        No rush buddy!
         
      • A body

        A body SLO-KID

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        Both of my sets were blue plug.... it was just as the more educated I became about the W5, the more I could see subtle differences between the sets. My original set had a lot of porosity, even in the cnc ports. My second set looked a lot different, smoother finish. That top end i sold is on a built engine just waiting for the car to be completed.


        Man this was such a great running mill. The car wasn’t legal for 9’s so my dad was shifting it around 5600 and running low 10s. On one of my visits to SoDak we got in the test lane towards the end of the day with a 6800 shift point and ran a 9.82. I think we could have gotten a 9.6 out of it with some tuning. After my dad hung up his helmet, I sold my Mirada after 27 years and kept the Duster. I had it caged and certified.
        7-13-2007W5Engine-01.jpg
         
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        • pittsburghracer

          pittsburghracer Well-Known Member

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          Core shift always was a problem with Mopar products. Years ago when Mopar used to take a trailer to the NHRA national events they let my buddy who ran a 440 six pac in stock or super stock go through every single intake on the Trailer to pick out one with the least core shift.
           
        • yellow rose

          yellow rose Doctor of Thinkology.

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          image.jpeg image.jpeg image.jpeg image.jpeg Ok, because I suck out loud, I finally got around to taking pictures of this stuff. You can see how much stiffer the W7 head is across the top of the ports where the rocker hold downs are. On the W5, when using a Jesel or T&D system I've had to take as much as .185 off the head to get the shafts in the correct location. If you ported the intakes UP like you should, things get VERY thin up there, not only in the spring pockets but also where the rocker stand blends into the head. It can get messy right quick.

          I forget how much I love the W7 head every time I see it. I don't love the exhaust port, but I don't hat it either. I think a 2.200 intake valve with a 50 degree seat and a 1.600 exhaust with a 55 will be a killer deal. Maybe a 55 on the intake if you can get it in there.
           
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          • Mopar Sam

            Mopar Sam Well Fed Member

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            That W7 looks a lot like mine. Mine have seats and 3/8 guides, which I plan on replacing with 11/32 or 5/16. I bought some 3/8 valves I think 2.15 at Indy, but on a quick mock up they were too short. Got them for $50, so no real loss. Unless a deal comes along, I plan on using my Iron W2 rockers.
             
          • SwedishViking

            SwedishViking Well-Known Member

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            Does the w7 share intake manifolds with w5?
            How about the headers?
             
          • Mopar Sam

            Mopar Sam Well Fed Member

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            No, W7, W8, W9 share intakes and there are different ones for different deck heights, and must use a valley plate. W5 uses same as W2 except rectangle instead of oval.

            MP intakes for the W7 heads are kind of hard to find, but Kent Ritter makes new ones, and Brett Miller makes some killer ones too,
             
          • Mopar Sam

            Mopar Sam Well Fed Member

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            W7s use their own unique headers.
             
          • bigfoot

            bigfoot Well-Known Member

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            Do w7's use w2 rocker gear?
             
          • yellow rose

            yellow rose Doctor of Thinkology.

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            I don't remember. My first thought was no, but looking at them I think you *MIGHT* be able to use W2-5 stuff. You'd have to do some machine work on the rockers because IIRC the valve centers are farther apart on the W7 which is why they come with 2.150 and 1.650 valves. I just don't think the exhaust needs to be that big. If you could get a 1.600 valve in there with the right valve job you could use a 2.200 intake valve and not crowd the valves any more than they already are.

            I'm just not a fan of big exhaust valves.
             
          • Mopar Sam

            Mopar Sam Well Fed Member

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            YR, the valve spacing is only .066 wider if I recall correctly.
            I was thinking as wide as the pad is on the iron rockers it would be fine. This will definitely be a learning experience for me. I will share as I find things out and will appreciate any knowledge you all can share.
            My first thing is to figure out what valve length I need. The valves I have are too short to get any installed height. They are w7 valves the box says 5.46 if I remember. I think w9 valve length will work. Who knows what I may find at Indy in March.
             
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