[DeTomaso] More valvetrain for 6143

[Tomas Gunnarsson]

Ken,

The problem is that the stock 351C keepers have an OD that fits big block sized retainer holes. All aftermarket keepers I have tried are too small in OD. I'll forward some pics to you.

Tomas
  ----- Original Message ----- 
  From: Ken Green 
  To: detomaso at realbig.com ; Tomas Gunnarsson 
  Sent: Thursday, January 21, 2010 10:10 PM
  Subject: Re: [DeTomaso] More valvetrain for 6143


        I thought they are 11/32, and there are plenty of 11/32 locks available.

        http://www.summitracing.com/search/?keyword=11/32/%20locks&dds=1

        Ken

        --- On Thu, 1/21/10, Tomas Gunnarsson <guson at home.se> wrote:


          From: Tomas Gunnarsson <guson at home.se>
          Subject: Re: [DeTomaso] More valvetrain for 6143
          To: detomaso at realbig.com
          Date: Thursday, January 21, 2010, 12:39 PM


          Are there single grove keepers that have the same diameter as the stock multigroove keepers? I couldn't find any myself. The suggestions so far have been using Boss retainers that supposedly have a smaller hole than the stock retainers and would fit the commonly available keepers.

          Tomas

          ----- Original Message ----- 
          From: <jderyke at aol.com>
          To: <unlisted-recipients:>; <no To-header on input>
          Cc: <detomaso at realbig.com>
          Sent: Thursday, January 21, 2010 8:45 PM
          Subject: Re: [DeTomaso] More valvetrain for 6143


          > In a message dated 1/21/10 8:55:58 AM, ehpantera at yahoo.com writes:
          > 
          >> I don't know how you can check your valves. If I don't know what they 
          >> are, I replace them.
          >> Mark
          >> 
          > First, Ford valves are magnetic and most of the billet one-piece valves are 
          > of non-magnetic stainless. Second, they will (as Bill Gaino said) have 
          > three grooves for stock keepers, and one-piece valves are always made with 
          > single grooves- which means that when you change valves, you also need a set of 
          > single-groove keepers. The stock retainer washers will fit as-is.
          > The big deal about this is, production valves are made with separate heads 
          > and stems that are friction-welded together, which works OK up to maybe 5000 
          > rpms. Or if the engine gets really hot like on a long, long climb up a hill 
          > in the lower gears. Then the weld(s) break, the head comes off and destroys 
          > the engine. Happens not only to Ford engines of all sizes but also VW and 
          > many others. 
          > And cheap 'stainless' valves from India or China may also be welded 
          > together. Look for American-made valves that actually SAY they're one piece, not 
          > just 'stainless steel'. Cheap grades of off-shore 'stainless' may be weakly 
          > magnetic. Good valves will be around $14-16 each in name brands; cheaper= 
          > suspect. Look at them as insurance, not power-producers. Good luck- J DeRyke
          > _______________________________________________
          > 
          > Detomaso Forum Managed by POCA
          > 
          > Archive Search Engine Now Available at http://www.realbig.com/detomaso/
          > 
          > DeTomaso mailing list
          > DeTomaso at list.realbig.com
          > http://list.realbig.com/mailman/listinfo/detomaso
          _______________________________________________

          Detomaso Forum Managed by POCA

          Archive Search Engine Now Available at http://www.realbig.com/detomaso/

          DeTomaso mailing list
          DeTomaso at list.realbig.com
          http://list.realbig.com/mailman/listinfo/detomaso