1998 e36 1.9 Z3 - M44 supercharging thread - Page 6

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Thread: 1998 e36 1.9 Z3 - M44 supercharging thread

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  1.  
    #51
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    Quote Originally Posted by markrnorton View Post
    Been out and about over the weekend and have the following observations:-

    1. The ITG air filter flows significantly more than the simota, it pulls harder and quicker in all gears, especially 1st and 2nd. I will get it dyno'd again soon.

    2. The stainless exhaust is TOOOOOO LOUD, its ok in short burst, but it must be my age, its too much. I have a backup pipe i will be fitting next week sometime to keep my ears in tact.
    sounds good Mark! - I know what you mean about loud exhausts.. (it was one of the reasons I went with the SuperSprint over the Eisenmann and others)... I must be getting old too! - but you need to draw the line.. especially in a rag top and especially if you're intending tracking the car. The worst thing I've found about exhausts in the past is not so much the noise they make but the drone! I'm sure you'll get it sorted!!

    * 2016 BMW M135i LCI (F20): current
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  3.  
    #52
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    It doesn't drone exactly , more of a growl! But it peaks at 107dba at 3/4 max rpm so it's to loud for track days too
    Z3
     
     

  4. Exellent !!!!!!!!! 
    #53
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    Totally exellent Mark.

    I think with all that power and no weight it's a bit of a beast.
    You said your injectors are almost maxed out. is that 80% at full WOT maxed , or do you really mean they are maxed out. What are your ideas on next injectors size / brand.
    Any chance you could get a few runs on vid, so we can see what it sounds like. ( eh !!! ) LOL.
    So what's next ??

    Cheers and good luck.

    D.
     
     

  5.  
    #54
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    Well to be frank i took the exhaust off last night, need to replace it with something more sane, its 107dba is too loud. need to source a replacement now rather than build one.

    Going to fit an oil catch tank next and re-feed the injectors on the air side, tidy it up a bit. bought all the parts just need to fit them.

    Injectors are close to maxing out Donutman1. so i will think about that over the winter. probably buy some in from the states
    Z3
     
     

  6.  
    #55
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    Well i sourced a replacement and ARGHHHHHH !
    fitted the exhaust , and it was also to loud, its not my week !!
    I am sure the s/c makes the car louder, especially now running at 10psi boost

    So now i decided to start again. i ripped the old/new/replacement exhaust off right back to the cat/manifold.

    Started again.. this time i have offset the centrebox from the cat to help centralise it down the tunnel. Moved it over by approx 1inch. this has helped alot.



    nice offset has worked a treat

    the existing silencers are glass packed and work on absorption of sound, i thought i'd change tack this time and go for a baffle box at the end. an american box, Flowmaster, uses baffles to reflect the sound and cancel soundwaves/frequencies.


    Now for the tricky bit, mount, cut, tack, remove, weld, repeat.


    will take some tim to get this correct again, want to be totally happy this time. I made sure i have enough 2.5" stainless bends and offsets

    lets hope this time its a trifle quieter ... ie less than 107dba
    Last edited by markrnorton; 14-07-2010 at 20:58.
    Z3
     
     

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    #56
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    Looked into this conversion for my 318is E36, Never got it though as my car got wrote off. :( Nice to see one about.
     
     

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    #57
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    looks like you have your work cut out for you!..

    I was thinking - would it be an option to use a backbox from an existing model with a slightly larger bore i.e. a 330 or M3?? or are these bores too small also?

    * 2016 BMW M135i LCI (F20): current
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    #58
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    its not the bore of the box that is the issue. its two-fold

    1 resistance or backpressure in the box
    2 weight of the box

    the 'performance' style boxes are lighter and have less backpressure.

    considerably lighter i might add. i will weigh them tonite and let you know. also the stainless is alot more durable than mild steel
    Z3
     
     

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  11. 7 months later 
    #59
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    Great. Cant wait to here more! I got the M44 Engine and you have made it look so easy to S/C it!
    Last edited by MONSTER; 16-08-2010 at 09:05. Reason: Wrong
     
     

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    #60
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    I wouldnt say easy !

    well it is initially to install, its how far you go i suppose

    Its now going as i want to fund a v8 Z3.
    Z3
     
     

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    MONSTER (19-03-2011)

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