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My 98 super charged EX

Discussion in 'Elite Explorer Registry' started by 4pointslow, July 1, 2008.

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    1. jd4242

      jd4242 Elite Explorer

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      Was the ""last"" data since you switched heads/cams??

      Mann i dont know how your not maxing those lines or pump out..thats crazy too me!! I still want to see a dyno graph to see where you're making power and how much..

      Your jets will based off a set fuel pressure so keep that in mind..your duty cyle is going to go up when spraying as it will be adding more fuel also,even though its a wet kit..the kits dont require a ton of fuel but again depends on shot..i too pull fuel from my regulator for my NX kit..

      Also good read on w/m thanks @Dono
       
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    3. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      I gotta say, I'm getting concerned about the block. This could end in a spectacular way.
      MAX HP From a 4.0 BLOCK [Archive] - V6Power Messageboard

      Although, if anyone can do it, you can.
      I'm guessing that with your amazing ability to move slowly and methodically and being so careful not to detonate (even once) you will surpass anything I can find on the 'all knowing' internet.
       
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    4. jd4242

      jd4242 Elite Explorer

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      I see 17psi and 75 shot as the car that had the most and he blew a rod after a bunch of passes to which he seems to blame not cooling down..

      Like i said id like to see more gap on the rings and then the rods would be my next concern. .i think the block could take more...

      think i hear forged rods and pistons in future. ..
       
    5. jd4242

      jd4242 Elite Explorer

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      I know when you do the calculations for injector size,fuel psi,duty cyle and based on .60 BFSC it come up as your making around 470hp at crank...

      Sooo yea might want to start at a 35 shot...lol

      Personally id start looking for an another short block to start building...get some forged rods and pistons/open ring gap..then swap heads and spray the hell outa it..

      or ditch the awd and put a built 2wd trans with sticky tires for track...gota look at the v6 Mustang guys running 10-11s with same power as you
       
      Last edited: December 12, 2017
    6. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      I know building an expensive short block isn't part of the plan right now.

      But what is the stock bore and bore spacing? I'd be pushing the bore to .032" less than the bore spacing(SBF's have 4.38" bore spacing and .060 over is the limit on the old blocks). What's the stroke, is there room for a 1.55:1 rod and short piston(1.25" or so). I gather parts choices are limited, but for the costs I'd only consider doing it if it gained 30+ cubic inches. I agree though that the block seems stronger than anyone has pushed the 4.0's.

      I think the V6 trans is much weaker than the engine power limits, I'd take it easy on the engine combo.
       
    7. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      Thanks Don!
      The link to the 340 also has the Walbro GSS342 255 LPH pump.
      That is the one I will probably go with since the 190LPH one I got from Summit has held up so well under my abuse.
       
    8. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      Or if you look at it this way..
      It put down 310 to the wheels, add 20% = 372 and then figure it takes 75 HP to run the Supercharger and you get 447HP at crank. lol
      I have been guessing 450 to round it up a little. I thought I saw something called a safe shot that came with as low as a 15 HP jet setup.
      I want to start as low as possible and partly as an experiment to see the effects it has. Then increase it until I reach my low 12's or the engine gives up.
      If the trans goes out I will just rebuild. I will never ditch the automatic 4WD.

      And yes, those Mustangs owners are lucky they are much lighter than my truck.
       
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    9. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      The 4.0 SOHC can not be bored 60 over, the block is too thin. Someone in Australia had a block sonic tested.
       
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    10. jd4242

      jd4242 Elite Explorer

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      Only reason i suggest getting ride of 4wd is the power gain,weight loss and if you went to a stall you would gain even more time..

      I think you're at the point where the truck isn't going to go much faster without major changes..ditching 4wd may get you there with SMALL shot..i dont think your going to be able to spray a big enough shot alone to get you were you want without changing the short block..

      But if anyone can,it will be you..you've done incredible things with it already and im in for results either way..lol

      Dont know how close this is butttt
      V6 Mustang 3500
      V6 explorer sport 4x4 3800
      Be very close in 2wd
       
      Last edited: December 12, 2017
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    11. jd4242

      jd4242 Elite Explorer

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      We have been through this in a thread already. .it cant be done..the OHV can but only a 90tm block,which i have and running a 4" bore on currently
       
    12. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      You are lucky, I wish there was one 4.0L SOHC block that could be bored to 4 inches.
       
    13. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      You can sleeve all of the cylinders and do it, but it used to be $60-80 per cylinder years ago. I think there's a lot more to gain with changing the rods, pistons, and crank, if a stroker crank was made. The 302 deck height is 8.2", and that's short. You can run a 3.4" stroke easily, and some have pushed it to 3.5" but the pistons were really too short.

      See what the 4.0 deck height it, and then what would it take to get a crank that's near 3.25" to 3.4" or so. If a crank can be had, then you can find a rod and piston to work with it, depending on what bore you're dealing with. A 4.0" piston can be had in tons of heights, stock being around 1.6" and stroker pistons near 1.2" or so. The crank would be the tough part, if there is one. A custom crank is way too much, so you need a better way.
       
    14. jd4242

      jd4242 Elite Explorer

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      Honestly i wish i kept it stock bore..

      just a fyi i couldnt find any off the shelf piston in any bore that would work nor could i find a forged rod...there was always something off..both mine are custom. .
       
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    15. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      That's the rub, there are tons of aftermarket parts, but it takes a specific combination of components to work in a certain engine etc. It sounds like the needed parts don't exist, so altering the bore or stroke is too costly.

      The Summit website is helpful to research some parts like the pistons and rods. I don't know how a person would check out crank choices, each engine has a short list of options for those.
       
    16. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      Nitrous Now
      Not building an engine now.
       
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    17. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      for my own selfish reasons, I'd love to see what effect that 'safe shot' would have on iat's.
      Probably not what your after, as far as I can tell. Its a very small dry shot. It would be super easy to tune (Or maybe it wouldn't even be needed). Only thing is, to upgrade it to a wet kit looks expensive.

      I'm really looking forward to seeing this progress.
       
    18. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      If all goes well I will have ordered a nitrous kit by tomorrow night.
      I will still be looking at accessories like bottle heaters and gauges.

      Once I get the kit and look at the jets I may order some smaller ones.
       
    19. jd4242

      jd4242 Elite Explorer

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      Which kit??
       
    20. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      I got the Nitrous Outlet Kit for the GT500 with 10lb bottle, I liked where the nitrous lines attach to the plate better.
      I got it off eBay, it is a "used system" that was supposedly installed on a show car but never had nitrous in the bottle.
      $550.00 shipped.
      New kits with 10lb bottle are $800.00
       
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    21. jd4242

      jd4242 Elite Explorer

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      NICE!!
       
    22. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      Good buy, you gotta jump at great deals.

      I just came back from NC yesterday with another SE Mark VII, another project that needs work.
       
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    23. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      Well, there were some problems that caused a delay of the shipping of my nitrous kit but we got it worked out and finally it will be shipped tomorrow.
      Should have it in a couple of days if all goes well.
      It has been extremely cold here lately, I saw 7 degrees F on my overhead display the other day.
      This weekend it is supposed to go up to 59F. I plan to work on my 2004 and try to get all the monitors to run for state inspection which is due by the end of February.
      After that I can focus on the race truck again.
       
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    24. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      Got the Nitrous kit today, it all showed up in good shape.
      $550 for an $800 plus kit so I wont bitch about how long it took to get it at my house.
      The kit comes with new high flow bottle, solenoids, and a plate that fits between the throttle body and supercharger on the GT500.
      Of course there are wires, switches, brackets, a WOT switch, lines, and some different sized jets starting out with a 50 shot.
      The seller said he is sending me some more jets that someone dropped off at his house too, he forgot to put them in the package so is sending them separately.
      I don't know what sizes they are but maybe they will be smaller than my 50 shot ones, I really want to start out with the smallest I can get my hands on for experimenting.
       
    25. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      IMG_1764.JPG
       
      Last edited: January 15, 2018
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    26. ahodges

      ahodges Elite Explorer

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      I can't wait to see the results of this mod!
       
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