GO FISHING, use SLABSAUCE Fishing Attractant
Results 1 to 6 of 6

Thread: Completed my v8 swap from 3.0L to 4.0L and love it with free-flow exhaust.

  1. #1
    Join Date
    Aug 2005
    Posts
    101

    Default Completed my v8 swap from 3.0L to 4.0L and love it with free-flow exhaust.

    First, thanks so much for all the trouble-shooting on the bad Cyl #1 and advice about possible repairs.

    I had some posts a few months ago about what turned-out to be a bad piston ring in cyl #1 in my 95 530iA and decided to replace it with a 4.0L long-block with low miles and finished it and man what a difference in the performance.

    I found that both cat convs where crumbled and replaced them with free-flow magnaflows and removed the resonator and it's even more responsive in addition to the 3L to 4L swap. The exhaust flow makes a real difference when opening-up the throttle even with my 3.0L MAF(4.0L MAF on the way).

  2. #2
    Join Date
    Feb 2004
    Posts
    4,894

    Default

    Glad you joined us 540 guys... Congrats on conversion.

  3. #3
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,843

    Default

    definetly leave the 530 badge on it...shoot swap it out with a 525 badge

    Now I'm wondering how the trans will hold up, only rated at a low HP figure.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  4. #4
    Join Date
    May 2004
    Location
    Maryland
    Posts
    1,027

    Default

    do you have a link to the free-flow magnaflows you're using?
    1994 540ia|Oxford Green Metallic|Lemforder|KYB in H&R|18" OE Staggered M-Parallel with Pirelli P-Zero

  5. #5
    Join Date
    Aug 2005
    Posts
    101

    Default The 5HP18 tranny is supposed to be capable according to a 35+ yr bimmer tuner I know

    I had the same concern and I spoke with Pete McHenry in NC that I now has ALOT of bimmer tuning and conversion capabilities and he said the 5HP18 would be okay as-is.

    I plan to drive it moderately over-all but it will be had to hold-back. Being a recent swap and fine tuning ALL those sub-assemblies after re-assembly I will not want to run it too hard for a few weeks to be sure all things are well.

  6. #6
    Join Date
    Aug 2005
    Posts
    101

    Default Yeap, it's herein...

    Magnaflow site with BMW v8 4.0L univ cat convs:

    http://www.car-sound.com/02product/s...d=138&cat=540i

    I bought (2) of the Model 94005 from an e-Bayer that had them for $52 ea including shipping and here's there info.:

    http://cgi.ebay.com/ebaymotors/ws/eB...3751527&rd=1,1

    The (2) separate cats where installed at a slant to the tranny tunnel since them were oval and not round like the OEM. I had them angled on each side of the tranny tunnel at the same angle as the tunnel walls and ran the pipes to the OEM muffler from them and eliminated the resonator.

    The sound is a bit louder(not much but sounds better to me) and I will replace the OEM muffler with a MagnaFlow Stainless with tips sometime to improve the "growl and flow to the next level.

Similar Threads

  1. Almost Free 535 Manual Swap/Exhaust in MD
    By nirvana19 in forum 5 Series BMW
    Replies: 1
    Last Post: 08-14-2009, 08:48 PM
  2. M20/M50 rear exhaust section swap?
    By E34-520iSE in forum 5 Series BMW
    Replies: 4
    Last Post: 11-07-2008, 12:36 PM
  3. Replies: 5
    Last Post: 10-22-2006, 03:41 PM
  4. Exhaust,Eibach Springs & Free Lights
    By COT1 in forum 5 Series BMW
    Replies: 6
    Last Post: 08-22-2006, 09:08 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •