Replacement Pistons

Discussion in 'The "Pure" Stockers' started by Mark A., Oct 2, 2006.

  1. JohnRR

    JohnRR Cheater

    i'm a newbie to this venue but i also do not like using NHRA specs as the rule , and definitley no X pipes , i just did a 2.5" exhaust on the dart and i didn't even add an H pipe ... never had one , never will ...
     
  2. Brian Stefina

    Brian Stefina Well-Known Member

    True true.......

    I just think of the added grief for the race organizers.......we don't want Dan or Bob aging prematurely...... :laugh:
     
  3. scatpacktom

    scatpacktom Well-Known Member

    Hey Mark,How fast did you get your Challenger to go?
     
  4. BlackGold

    BlackGold Well-Known Member

    Why would anyone want to use "advertised compression ratio" as the rule??? It's just an imaginary marketing number -- just like advertised horsepower was. I can't speak for all makes, but virgin Olds engines routinely fall significantly below the advertised compression ratio.

    If true Pure Stock (factory fresh) is too pure for you and you want to bump compression up to the advertised number, why not go all the way to the NHRA limit? :Do No: As was pointed out, no one's forcing you to do it, and the matched 2-out-of-3 race format ensures a competitive event even if you're leaving a couple tenths on the table. :TU:
     
  5. Mark A.

    Mark A. Well-Known Member

    Well if some don`t the NHRA limits, an some don`t like the advertised compresion rule, then were do newbies like myself go to get a question answered? Or since this is a fun format which I for one enjoy :) rather then brackets there isn`t really any rules for internal componants unless you go to get certified?
     
  6. Chevy454

    Chevy454 Well-Known Member

    That's one "Nea" vote from the Missouri representative...

    I was in the "vocal minority" of being against the NHRA & x-pipe decisions...and while I initially resisted the change, it basically became a "when in Rome" kind of deal when I saw the playbook that a few other folks were using! :laugh: While the NHRA does give everyone a birds eye view of the specs, the posted numbers are skewed for whatever reason...ie: low compression Buicks pick up an obscene amount of compression, 440-6 Mopars get a healthier cam...but like was stated above, everyone is pretty much pot committed to the NHRA/x-pipe thing...:Do No:

    Mark A: I see your in St. Peters...I'm down around West Plains, and occasionally run at Gateway...y'all lost a neat old track when MAR in Wentzville closed... :ball:

    ---------------------------
    Hillbilly Racing Team
    "Membership has it's privilages...no shoes required!"
     
  7. LON

    LON Well-Known Member

    The engine that is in my Runner was built clean back in '87 and not fired and broke in until late June of last year :Dou: . When it was built back then I took a 13,000 mile '69 New Yorker engine and besides being honed, adding a cam that is 1 step above a resto cam, the necessary 6bbl intake and adding the deep Hamburger pan the engine is all original NY'r pieces - flat top pistons, standard rods, heads, valves, etc. The trans has a mild shift kit and regular old ATF for the slippery stuff. For exhaust I'm running a Stainless Works 304SS 2.5" H-pipe system w/ Dyno-Max mufflers. I'm quite happy w/ where it is running and can see by the mph that it has more in it w/ a little more fine tuning. I don't see myself ever looking to build a NHRA spec engine and will never do an X pipe. Just having fun w/ what I've got and will continue to get "off the porch" to play w/ who ever shows up.
     
  8. Mark Weymouth

    Mark Weymouth Well-Known Member

    Scatpacktom, it went 13.504 @ 103.65.

    It was crash course. We were certing on Tuesday and we had issues with the motor right before the race. The motor came out on Friday, Kieth Black got us new pistons overnight, Randy R. had a cam he overnighted us, new pushrods overnighted...we did complete new machine work on the short block, rebalanced everything and had it in the car and running Monday. The car was shipped Monday in time for certing Tueday morning. The trouble was we never gasketed the intake we just temp. sealed it to break the cam in. After certing we put real gaskets in and realized we did not cut the intake in the mad rush. It was 1/8" off and we had to shoe horn it on at Scott's before the race. That's what I get for trying to race a show car.

    We have fixed it and it goes quicker now. Still it is 3700+ lbs and carring the big 727 so it will never be a complete rocket.

    Mark
     
  9. scatpacktom

    scatpacktom Well-Known Member

    What is its best? I know it's a nice car so you probably don't try to really ring it out huh?Or maybe you do I don't know :Do No:
     
  10. Mark A.

    Mark A. Well-Known Member

    Mark, did everything go good on the certifing?
     
  11. Mark A.

    Mark A. Well-Known Member

    Chevy454, you aren`t kidding, me an alot of other people in general I think hated to see it go. Gateway is really a mess at times from what I hear, test an tune nights or a Midnight madness deal are about the only events worth running anymore but where else is one going to go anymore. I know alot of guy`s make the trip to K.C. they say they would rather drive the 4 1/2 hrs. then wait in line a Gateway.
     
  12. Mark Weymouth

    Mark Weymouth Well-Known Member

    The certing went fine and it passed with ease. At one piont Casey had all the people who have cert'd listed in a thread with the specs. Maybe someone could find the thread.

    The best it has run is 13.30's @ high 104's to low low 105's. I only ran it once after the intake was sorted out. I will bring it back one day. The car sure runs nice but is supper sensitive to shift points. Miss it by 1 rpm and it slows down.

    Mark
     
  13. Mark A.

    Mark A. Well-Known Member

    Miss it by 1rpm an it slows down, I wonder what the deal is with that. Think someone has that cam dialed in pretty good or what?
     

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