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  1. CHARLIE YAPP

    1.73" intakes with a Burtz 6.5 head

    Generally, the 1.73" valves fit Ford manufactured Model A and B cylinder heads. They did not fit my earliest Lion Speed heads and those would require milling treatment for oversized valve heads. The larger valve heads DO work for better intake breathing on a 200 to 213 ci Banger. The...
  2. CHARLIE YAPP

    Secret of Speed Article about distributor rotors "UPDATE"

    I don't know who Delux 40 is but I would listen to him (her?). He (her) is correct. Why most people's identities hidden in this site/thing?? You want HP and stability? There are better ways to spend your time than playing with your rotor. Joop asked me about this. . .guess I wasn't clear...
  3. CHARLIE YAPP

    Model A head combustion chamber shape

    Could you please show the other side. Is this a two piece head? It could be a Norm "Frick" or Robert "Roof" head if a 2 pc. . . .Or as you think made in Australia or New Zealand A "R&R" (Robert Roof) 2 pc was sold on Ebay about 5 years ago for $4500.00. Go figure. The "turbulence" chamber...
  4. CHARLIE YAPP

    Unique Cylinder Head

    I have a list of over 60 flat heads for the model a/b ford four bangers and this chamber is a first for me. There have been some mighty strange heads built over the years, mostly jobs playing with combustion theory. The best performing heads have always been cast iron regardless of chamber shape...
  5. CHARLIE YAPP

    Lion Speed Head

    Lion Speed Head: version 1, 2, 3, 3-A, 4 I offer this spec sheet for those that have a used or older Lion Speed Head. IRON lion Speed heads are made from one set of patterns. Structurally all versions are the same on the outside and inside. The difference is in machining. Version I ("I" was...
  6. CHARLIE YAPP

    Lion Speed Head

    Thanks ZZ. I appreaciate the support and the overwhelming phone calls from so many of you . . Who knew? . . . But guys I just have to go mow the lawn before it rains again. Four-Titude, Charlie
  7. CHARLIE YAPP

    Lion Speed Head

    Charlie Yapp here; Thanks to exactly 47 men (so far) that have given me the heads up on the spirited comments made by Brent Terry on this important and informative board. Terry misused it as a propaganda Board. I have only met Brent once and found him to be a Model A man from the git go...
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