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Tuning my 347 with rear mount turbo

Discussion in 'EEC V' started by Dono, January 29, 2016.

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    1. jd4242

      jd4242 Elite Explorer

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      Just let me know what case,year,model and all that and i can give him a call and see exactly what he would charge and how much he can boost it..i can take a video of it being tested also.

      You do have to supply a unit to be built,he just replaces everything in it and re-spools it(maybe a more technical name but idk it)

      Depending on which one you have my buddy may have some or the junk yard across street would
       
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    3. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      • Thanks Thanks x 1
    4. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      That looks great, the whole thing is black(some only do part of the housing).

      FYI, if you buy one directly from the maker, often you can request a specific pulley size. I got an 8-rib pulley on one of the units I got from DB. I think you could ask for a certain diameter too, and that saves money from having to buy something different later.
       
    5. jd4242

      jd4242 Elite Explorer

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      DB is the advertised ""think was 200"" amp that burt up after a year and took to the local shop.it was in the smaller case and they said the amout of winding that needed to be in it to make 200 amps wouldnt even fit.
       
    6. jd4242

      jd4242 Elite Explorer

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      Thats not a bad price especially for not needing a core..im not sure what cores whould cost here at junk yard or shipping but probably end up around the same.

      I would try a over drive pulley first if you dont have crazy stuff running,like a system or something. That should up the amps at idle if your not really needing more anywhere

      These guys,been around forever. .

      http://www.browningsalternator.com
       
      Last edited: July 23, 2016
    7. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      I agree for your truck try the smallest pulley first. You aren't turning high rpm's so there's no worry about hurting the alternator. Hopefully the belt wrap is very good and the tensioner is strong.

      Tim/vroomzoomboom is using a larger crank pulley which already makes his alternator produce more current at a given rpm. I'm going to be using a similar 7" pulley so I'll see how the alternator does with the pulley I have now, which I think is the stock diameter.
       
    8. vroomzoomboom

      vroomzoomboom Elite Canuck STOCK SUCKS! Elite Explorer

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      but i also have a larger alt pulley as well.
       
    9. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      My needs are not as immediate as Tims. My alternator will do just fine once the crazy heat is done for the year. And, I think its done. I now have close to a year to sort something out.

      JD, I'd appreciate you talking to your alternator guy. It sounds like you have a rare find in a guy that really knows his $h1t and is straight up and honest.
       
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    10. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      Right, you did that to be easier on the alternator. I think it would be fine with the stock size too, that is do a little math and compare the rpm's, knowing how how the DOHC 4.6 engines spin theirs. I'd ask about the 4G alternator's limits from a good shop that is trustworthy, kind of where this discussion has been recently.

      Has anyone noticed that there is a clutched alternator pulley available for the Marauder, or it's an aftermarket thing. I saw it but didn't consider it, I just thought it was odd, it evidently free wheels at high rpm. I saw that on eBay years ago, but those DOHC's turn 7500rpm etc.
       
    11. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      The clutched pulleys came from the factory on some Crown Vics and probably some other vehicles.
      We had 5 Crown Vic Police cars and they all had one on them. I say had because we donated 2 to another campus.
      Still have three I think.
       
    12. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      Trouble in paradise. My waste gate can't vent enough exhaust pressure to get me below 14lbs boost.

      Options are:
      1. Tune for it (I'm at 7 degrees [17 total] and hear detonation when I hit 14 lbs boost)and hope I don't end up with a split down the center of my block and/or drive line breakage.
      2. Find a bigger waste gate and get it welded in.

      I can clearly hear the woosh of the waste gate so I know its opening, but boost control is seriously lacking.

      I know the right thing to do is suck it up and get a bigger waste gate.
       
    13. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      Be easy on it, the pistons can't take that pressure for long, and a poor tune is the kiss of death for them, and soon after the block. Some people manage to push theirs for a while. That's where you hear about a stock block making 600hp, but that's super rare. Do you feel lucky?
       
    14. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      Nope. not one bit.
      I need to get that boost down.
       
    15. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      Good answer. You've worked very hard to get it to where it is, Tim too.:thumbsup:
       
    16. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      Do you have an internal or external wastegate now?
      If external get a new one put on.
       
    17. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      External. its a 2 bolt style, but I see the are adapters to the v band style. I really dreaded the thought of going back to the exhaust shop.

      I have a 38mm unit, and am hoping a 44mm will work. there is no real rule as to sizing. I'm thinking eBay china knockoff as guys do seem to have success with them. Problem with this is the wait time. Problem with just ordering from summit, etc. Is the price.
       
    18. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      Still haven't replaced the waste gate. on my highway trip I kept running in to detonation.
      Today I again turned my attention to the shift/lock schedule. I am certain I was dropping in to 4th gear too quickly and locking the torque converter too quickly under light load. This was lugging he motor at too low of rpm's.
      I made good headway with adjusting both axis (throttle position and speed) pretty quickly today. I'm pretty close, I just need to find that fine line on the highway that he tc locks up, but unlocks fairly quickly when the throttle position increases slightly.

      Vroomzoomboom, expect a new revision his weekend. I'm pretty sure this modified schedule will work better for you also.
       
    19. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      If backing off the timing doesn't cure it you could try running a slightly richer mixture where it acts up.
      How was the fuel mileage on your trip?
      I averaged 13 yesterday in my 1998, that is a best I believe. My stock truck gets 14. lol.
       
    20. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      highway mileage is about 18 I think. The computer shows just under 20, but I'm sure that's a dream.
      I'm pretty sure that the rpm's were just too low for the load, causing detonation. I think I have fixed the issue just by getting the truck to unlock the converter/downshift faster.

      I don't want to pull timing at low rpm as I want that for increased gas mileage. If I can get the tc unlock/4th gear downshift happening sooner (but keep locked up and in 4th under light load on the hwy) I won't have the detonation issue.

      It seems with the turbo, much lighter throttle application is required to maintain hwy speed and load increases much lighter throttle also. I'd think you and Tim would be experiencing the same thing.
       
    21. vroomzoomboom

      vroomzoomboom Elite Canuck STOCK SUCKS! Elite Explorer

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      as much as i want to get cranking away on my tune, i think its wise to just wait until the new alt comes in. the truck feels all over the place from day to day using the butt dyno and i am almost sure its because of the charging issue.
       
    22. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      Quick update.....Slow going.
      I have not put much energy in to this, and have concentrated on drive-ability.

      For some reason, finding the sweet spot on the crank fuel and air so that my truck starts easily at all temps is proving to be a challenge.

      I do want to say thanks to @4pointslow for his help in tuning.
      He turned me on to histograms, and creating user defined pids.

      Here's a link to 4pointslow's description on user defined pids.
      https://www.explorerforum.com/forums/index.php?threads/my-2004-explorer.441838/page-10#post-3567031


      One of the histograms he created is to tune by ltft and let the livelink histogram do the work. It works amazingly well.
      Tonight, over a beer, I created a user defined pid adding my two long term fuel trims together, and dividing by 2.
      Then, I changed my histogram to use the user defined pid of LTFT so that it allows me to tune out of wot using an average of the 2 banks. Its pretty awesome to be able to take a couple things someone teaches you and marry them both together. Thanks 4pointslow!!

      Ok, I give.....Once I have created the user defined pids, how do I save them in the configuration so they automatically show up the next time I open up my datalog config?
       
      Last edited: October 16, 2016
    23. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      I have tried to save them in a livelink configuration file and it seemed to work until you change something like adding 1 more pid etc.
      Adding 1 more pid can change the order and mess up the calculation. For now I just add the calculated pids after the datalog is finished.
      If you think about it, having to calculate something on the fly while recording lots of information from all the other pids would slow the computer down anyway.
      Going racing today, wish me luck!
       
    24. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      Thanks, I see what you mean on saving user defined pids now. Also, I guess even a simple calculation could cause response issues. I'll play with it and see if my old core2duo laptop can handle it.

      Were all looking forward to your results. Vroomzoomboom is chasing your times. He's itching to get back out to the track, although we are shut down here for the year.
       
    25. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      Today was around 70 degrees F, not cold like it will be soon in months to come.
      My best time was 13.40 today.
      When it gets down to 40-50 degrees F, I should hit 12's again.
      I am working the AM shift and will have off on a few Friday nights so I might have a chance to get to the track again if it is colder out.
      We will see.
       
    26. Dono

      Dono V8 Limited turbo and retired SC 4.0 OHV Elite Explorer

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      Nothing wrong with that time. Have you run your numbers thru the wallace calculator for estimated horsepower? Considering your weight, it has to be right up there.

      Hopefully next year I can get out with Tim and have neither one of us blow up. I'm behind Tim on the mechanical stuff, and wot testing. I'm not sure that I have done a wot pull to tune off of at all this year. I know. I'm terrible. Now its almost time to put winter tires on.

      I removed all that under rated electrical tape with the upper intake off, and forgot to re-torque my lower intake while I was right there. I wasn't completely happy with my self.
      No problem though, a 'misfire cyl 8 code popped up', and off came the upper again. My wiring harness had had different injector connectors spliced in by a previous owner, and they had given me trouble in the past. #8 injector connector was clicked in, but intermittent when checking with my multimeter. I had already replaced 5 of 8 connectors, and now this makes 6, lol. And yes, I re-torqued my lower intake this time, and it was about a quarter turn loose on each bolt.
      On the tuning by ltft, it has really helped me. My truck is so finicky on its starting that I'd think I have it down, and a few days later it would not start any more without touching the gas. I'm guessing (hoping) that with the ltft's pulling a couple percent in that area that this was my issue. Even though after a good drive, I would tune my stft's for idle, my computer see's things slightly differently. I do think tuning via ltft will give me a single target to fix my starting. I'll know in a few days.
       

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