Announcement

Collapse
No announcement yet.

1953 Studebaker / Studillac project...

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • We now have pistons in the block... Heading home in 2 days.

    Dwayne
    Attached Files
    Last edited by 53 Studillac; February 22, 2013, 08:52 PM.

    Comment


    • Those aren't pistons, they're coffee cans.
      Escaped on a technicality.

      Comment


      • Just went with a small 4.390 bore this time. Was 4.40 on last iteration.
        Some have gone to 4.50 on stock blocks with mixed success. Seems odd
        that with the deep dish its still over 10:1 cr... Diamond made the pistons to
        be a mirror image of the combustion chamber of the Potter heads with dual
        quench pads.

        Dwayne
        Last edited by 53 Studillac; February 22, 2013, 08:55 PM.

        Comment


        • Aww heck, mine are only 4.351". If I remember looking at caddy heads, the chambers are pretty small.
          Escaped on a technicality.

          Comment


          • Those engine parts sure are pretty - almost a shame to use them.

            Damned - those pistons weren't cheap!
            There's always something new to learn.

            Comment


            • 72cc on the heads. Stock early heads are 76cc.

              Dwayne
              Last edited by 53 Studillac; February 22, 2013, 08:56 PM.

              Comment


              • You have an amazing project there. I wish you good luck with the motor, youv'e had some tuff breaks with it.

                You probably know this but I haven't seen it mentioned so I thought I'd thow it out there: Caddy 500's have an internal coolant bypass that has caused many an overheating problem. It is best if you plug it. If not, make sure that you have a thermostat that looks like this


                not like this:


                if you get the thermostat wrong, or run without it, some of the coolant will just go in a circle in the engine and never go to the radiator.

                Comment


                • JW (engine builder) sent me these power numbers from a late weekend dyno session.
                  Engine made best power with a 1250 dominator on a hogged out MTS single plane intake.
                  Potter intake was not used this time...

                  32 degrees of timing

                  RPM HP/TRQ

                  2600 273/546

                  3000 353/616

                  3500 421/629

                  4000 490/643

                  5000 647/683

                  5100 666/685 P*torque

                  5500 688/657

                  6000 700/614

                  6100 704/604 P*horsepower

                  Impressive? Cant wait to talk tomorrow and learn how the day went.
                  For those that dont remember the previous engine built by Potter Automotive.

                  4.40 x 4.40 (535), solid roller with .719/.709 256/264, 11.5:1 compression, 6.86 rods
                  This version made peak numbers of 652 hp at 5350 and 667 peak torque at 4816.

                  MTS/JW engine...
                  4.39 x 4.30 (520), solid roller with .711/.688 249/254, 10.5:1 compression, 7.1 rods
                  This version has peak numbers at 704 hp at 6100 and 685 torque at 5100. 91 pump gas!

                  Appears that in this case less is more!
                  I dont have everything in front of me, but I had figured on less torque with the shorter stroke!
                  With these numbers there is a legit chance for 600/600 at the rear wheels on the chassis dyno...

                  Dwayne
                  Last edited by 53 Studillac; February 22, 2013, 08:58 PM.

                  Comment


                  • WOW!
                    There's always something new to learn.

                    Comment


                    • And now for the bad news. I should have known when the first message
                      I got from JW last night was that "We have to talk, call me." So this morning
                      I gave him a call. He said it runs like a BEAST which is a good thing and that
                      he actually saw a spike of 740 hp on one pull but for some reason that I dont
                      fully understand about the electronic controls on that dyno it didnt like the data
                      and didnt show it above 6100.... It was still pulling hard. 2" headers, 1250
                      Dominator, not sure what gas, oil pump works great, etc. But....there's always
                      a but... Both heads are seeping water above the head gaskets somewhere
                      around the lower head bolt holes. JW was distraught and pissed to the point
                      he couldnt sleep last night. So the heads have to come off and investigation
                      performed to see if they can be repaired. If someone is debating on buying
                      some heads for a street engine from Cadco I could make you a deal on a
                      powerful short block!

                      Trying to stay calm...

                      Dwayne
                      Last edited by 53 Studillac; September 14, 2012, 08:03 PM.

                      Comment


                      • that's an amazing amount of steam. I hope they find something silly and simple as the cause of what's wrong.
                        Doing it all wrong since 1966

                        Comment


                        • Are you using copper head gaskets with silicone around all the water openings in the head and block? I have had that problem before and used Stop Leak, it worked.

                          Comment


                          • This version of the engine is using new MTS big bore conventional gaskets
                            they had made. The last build used Titan copper gaskets and we wanted
                            to get away from them for a street motor.

                            Comment


                            • http://community.webshots.com/user/53studillac

                              Unfortunately, your Link to Photo's doesn't work & photo's you've posted have been taken down.

                              Any chance these deficits be corrected - it's a great loss to Studillac History .

                              Comment


                              • Thanks for pointing that out. I will see what I can do... Where is a good place to store
                                photos on the net these days?
                                Engine is still in prison in OH. Coated bearings are in, waiting on machine work again.
                                I went ahead and ordered a T56 Magnum too!

                                Dwayne
                                Last edited by 53 Studillac; February 3, 2013, 05:41 PM.

                                Comment

                                Working...
                                X