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Thread: E34 540i/6 Turbo Build

  1. #26
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    Good to see it finally started. You cant compare a 4 cyl. to an 8. What the t3 might do is choke the motor. And you might have to settle for number 8. You forgot my e30

  2. #27
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    Quote Originally Posted by lughed View Post
    Good to see it finally started. You cant compare a 4 cyl. to an 8. What the t3 might do is choke the motor. And you might have to settle for number 8. You forgot my e30
    Isn't it an M62? There was another M62 turbo before you as well.
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  3. #28
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    Quote Originally Posted by lughed View Post
    Good to see it finally started. You cant compare a 4 cyl. to an 8. What the t3 might do is choke the motor.
    This...

    Nice build anyways, I've been sick for the past week so all I have to do is nitpick on forums

    I miss my e34.

  4. #29
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    Quote Originally Posted by VwAlex View Post
    This...

    Nice build anyways, I've been sick for the past week so all I have to do is nitpick on forums

    I miss my e34.
    We'll see, I don't think it'll choke. Only one way to find out, boost it.
    E34s are fun and cheap, I got into E38s for my daily and love every bit of the E38 for daily duties.
    Last edited by DUDMD; 07-09-2012 at 02:54 PM.
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  5. #30
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    Yeah but wouldn't it make more sense to just get a new housing and flange now instead of having to rebuild everything later on?

    Just trying to help you out.

  6. #31
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    The T3 flange is going to be the restriction, no way around that. I guess since you are going with 38lb injectors it won't be an issue. Once you get bored and want to turn up the boost it will.

  7. #32
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    Quote Originally Posted by Colby Colbs
    The T3 flange is going to be the restriction, no way around that. I guess since you are going with 38lb injectors it won't be an issue. Once you get bored and want to turn up the boost it will.
    I'm not going with those 38lb injectors, since they're too small for what I want. I'm getting rid of them and the Delphi 75lb. Looking at bosch ev14 right now, 50-80lb range. I'm just going to stick with the t3 flange for now and if it maxes out before I reach my power goal then I'll stop there. I would rather have the turbo spool up sooner and be more street friendly vs. having peak power at redline.
    Last edited by DUDMD; 07-09-2012 at 05:00 PM.
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  8. #33
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    Quote Originally Posted by DUDMD View Post
    I'm just going to stick with the t3 flange for now and if it maxes out before I reach my power goal then I'll stop there. I would rather have the turbo spool up sooner and be more street friendly vs. having peak power at redline.
    I think this is a better method as well. A lot of guys on these forums are running massive turbos and low boost, where the turbos are always far outside of their efficiency ranges. I think you'll be much better off with a smaller turbo as long as you're ok with the consequences of higher boost, it can be more work but is also more rewarding (drivability wise at least). Your car will be much more fun to drive than one with a gigantic T4 turbo running 15lbs of boost that is basically sleeping all the time.

  9. #34
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    Quote Originally Posted by GnarMachine View Post
    I think this is a better method as well. A lot of guys on these forums are running massive turbos and low boost, where the turbos are always far outside of their efficiency ranges. I think you'll be much better off with a smaller turbo as long as you're ok with the consequences of higher boost, it can be more work but is also more rewarding (drivability wise at least). Your car will be much more fun to drive than one with a gigantic T4 turbo running 15lbs of boost that is basically sleeping all the time.
    We're just talking housing. Turbo stays the same, I wouldn't be surprised if the difference in spool would be close to non-existent.

  10. #35
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    At what power level does a t3 flange become a restriction?

    [ 1990 325is Turbo ]
    "..a true hotrodder wouldn't be content until he had created a car so violent, so totally sick
    that the act of dropping the hammer would result in instant death. Anything less results in the need to go faster."
    -Tony DeFeo

  11. #36
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    Quote Originally Posted by BobRoss View Post
    At what power level does a t3 flange become a restriction?
    Depends on engine size and housing/exhaust wheel. Evos and Hondas can push them past 900whp at higher boost levels with a 67mm compressor wheel, even more with a 72mm wheel. I have twice as much displacement so it greatly reduces how much I can flow. T70 has a pretty large housing/exhaust wheel and I also don't have as much RPM as honda/evo, so 500-600whp is not unreasonable to push out of a t3 flange T70 turbo.

    7/9/2012 Update:
    Shipped the motor and tranny mounts back to manufacturer, replacing these 80A engine for 95A mounts. Transmission mounts are going to stay at 80A, just need them in the correct height. They claim that 500-600wtq won't rip them apart, I'll put them to the test. Hoping to get them this week to continue this build..

    Blow off valve came in the mail today. Same side intercooler, second walbro, and 2 walbro install kits should show up this week.

    Did some cleaning in the bay, it's more pleasant to work in now. I still have to clean the engine itself some more. Moved some of the wiring out of the way in the passenger front corner. Cleaner look and less stuff in the way.



    Last edited by DUDMD; 07-10-2012 at 12:41 AM. Reason: Automerged Doublepost
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  12. #37
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    Quote Originally Posted by BobRoss View Post
    At what power level does a t3 flange become a restriction?
    There are DSM guys with BEP T3 housing HX40 making 650 awhp(.70 A/R is the biggest).600 even with their restrictive BEP stock housing.There are many knowledgeable and experience guys around their forums and most agree that A/R is less important for the top end flow than the design of the turbine wheel.

  13. #38
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    Yea its a m62 but if you can turbo one you can turbo the other without a single difference. But hey if a m62 makes me one or two of a kind then so be it.

  14. #39
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    Quote Originally Posted by lughed View Post
    Yea its a m62 but if you can turbo one you can turbo the other without a single difference. But hey if a m62 makes me one or two of a kind then so be it.
    Better to be 2nd then 6th or 7th, LOL. But yeah, M62/M60 so similar, yet so different.
    What's the status on your build? Haven't seen it in a while.

    Intercooler showed up today, did a quick test fit to see if it's the proper size.
    It's exactly what I wanted. Just have to cut off the ground strap stud on the frame rail, it's not letting the radiator move a little bit further back.





    Last edited by DUDMD; 07-10-2012 at 03:50 PM. Reason: Automerged Doublepost
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  15. #40
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    Quote Originally Posted by DUDMD View Post
    What's the status on your build? Haven't seen it in a while.
    It runs crazy on a soft tune

  16. #41
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    Good to hear. You have any videos of that thing in action?
    Quote Originally Posted by lughed View Post
    It runs crazy on a soft tune
    Haven't touched the car since intercooler arrived.
    Still waiting on new motor mounts to come in before I can do anything else in the engine bay.

    I did get both walbro fuel pumps, fuel pumps install kits last week. I already have had the 750iL hanger for a while now. This week I might get the fuel pump system installed, wired up and plumbed.

    Bought a DTA S80 standalone today also, it's going to replace my 034EFI Stage 2c that I was going to originally use (my audi friend wants it for his built A4). I like the DTA a lot more, especially with built-in traction control. The factory ASC+T system is now going to be deleted from my car, since it would be just an extra couple of pounds taking up space in the engine bay.

    I also received my stainless tee's for the passenger side turbo manifold. Stainless o2 bung and EGT bung also came in last week. I have all the parts needed for the manifold build to begin, just need motor mounts to position the engine correctly.

    Performance Tuning and EWS Delete for MSS52/MSS54/MSS54HP/MS41/MS42/MS43/ME7.2/M5.2
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  17. #42
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    subscribed...

  18. #43
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    Is that a regular piece of pipe for the "L" off the intake?

  19. #44
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    Quote Originally Posted by dohcdoh View Post
    Is that a regular piece of pipe for the "L" off the intake?
    On the throttle body?
    If so, then yes. That's the factory ASC system (optional on most M60s), it houses the second throttle plate and a secondary TPS for the ASC system. It can come off if needed. I'm going to keep it, but remove the shaft/plate/tps #2 out of it. The DTA will take over the traction control system, even though I'm sure I can leave this one alone and have it work. The issue is that there is no adjustments, and it won't let me control it as much.
    The extra holes will be welded, and then a IAC valve bung will be welded on to it. (The factory IAC hose connection is currently in the rubber accordion intake boot, which is obviously not going back on the car)
    Last edited by DUDMD; 07-20-2012 at 03:41 AM.
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  20. #45
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    Very nice ... best wishes

  21. #46
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    Quote Originally Posted by e34 V8 View Post
    Very nice ... best wishes
    Thanks, I have been slacking with this build lately.
    Worked on my friends Audi 2.7T Allroad (replaced a lot of melted and burnt wires under the carpet due to water damage, not a fun task. All features and accessories are restored back to being functional)
    Worked on my 740iL (Built a subwoofer box, got an Alpine mrp-m1000 amp and a Kicker L7 in it. Going to polish my Iforged wheels and install them on the car maybe tomorrow and rewire the amplifier.)
    Next week I'm hoping to dedicate free time into the E34, since the much needed parts that I was waiting for are finally here. (Motor mounts, turbo blanket, sch10 piping and tees)
    Performance Tuning and EWS Delete for MSS52/MSS54/MSS54HP/MS41/MS42/MS43/ME7.2/M5.2
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  22. #47
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    Hurry up and start the build! I want a ride in the thinv

  23. #48
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    Update!?

    Past:
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  24. #49
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    Quote Originally Posted by DUDMD View Post
    Why not?
    What's your issue with my t3 turbo? It's not like I have a fully built motor trying to make 1200hp and push it to the limit. My friend is actually running a t3 turbo on the type r mentioned above, made 747 at 30 psi. He still has another 12 pounds of boost to go until the map sensor is maxed out. Precision turbos are amazing with their billet wheels. He's using a 6765 turbo on that Type R.

    T3 is just the flange size, the actual housing is huge and will flow a lot. T3 is much more spool friendly over a t4 anyways, due to higher manifold pressure. That's exactly what I want on a street car.



    Thanks
    This is correct, but i'm not sure you want higher manifold and drive pressure on stock internals with the M60/62..

    I do however support your theory on quicker spoolup with higher manifold pressures...
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  25. #50
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    Any idea what sort of power this should generate? Will it handle the hot season?
    Cheers

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