E36 325 alpina, Head-skimming - Page 2

Notices
 

Thread: E36 325 alpina, Head-skimming

Reply to Thread
Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 24
  1.  
    #11
    BMW Crazed
    Car Details
    _E34_'s Car Details
    Model of Car:
    E36
    Year of Manufacture:
    1994
    Transmission Type:
    Auto
    Car Body Type:
    325i coupe
    _E34_'s Avatar
    Join Date
    Jul 2008
    Location
    Surrey
    Posts
    157
    Thanks
    5
    Thanked 43 Times in 33 Posts
    Quote Originally Posted by hamish262001 View Post
    You would need a set of cams as well as mods listed to even get close to 230hp
    i dont think thats right

    Call Of Duty Veterans - Exclusive to Xbox 360
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #12
    BMW Fanatic
    Car Details
    Petro1-Head's Car Details
    Model of Car:
    325 alpina
    Year of Manufacture:
    e36
    Transmission Type:
    manual
    Car Body Type:
    coupe
    Petro1-Head's Avatar
    Join Date
    Aug 2009
    Location
    n.ireland
    Posts
    45
    Thanks
    0
    Thanked 6 Times in 6 Posts
    and i really dont the the cash to go down the turbo road i dont mind the work i am a mechanic n have a nice warm garage to do it all in so the labour aint that bad, i herd of these bored out throttle bodys floatin about this sit, do they give much increase
     
     

  4.  
    #13
    Dr of BMW
    Car Details
    mistreku's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    1993
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    mistreku's Avatar
    Join Date
    Oct 2009
    Location
    Luton, Beds
    Posts
    1,250
    Thanks
    716
    Thanked 569 Times in 390 Posts
    i think BBTB will offer you a better response, however not so many extra bhp. imo you should put some money in a good exhaust (meaning headers and decat straight pipes), that should be good for another 10bhp with your mods (chip and cams). also, a CAI won't hurt, it will raise the power peak a bit and give you another 5bhp, probably. i managed to squeeze 223bhp out of my M50 with chip, exhaust and CAI. no cams. so you should be a great deal higher than that with cams. BBTB is worth having, but i'd put my money in the exhaust first, if i were you.

    regarding the head skimming, i was thinking of doing the same thing, that's how i came across this thread. still looking for feedback on this. one thing i would consider is how aggressive those alpina cams are, and how much extra lift they offer, you don't want to merge valves and pistons, i reckon. coz if the cams lift, say, 1.5mm higher and you skim 2mm of your head, that might be all the clearance the combustion chamber has.

    anyway, keep us posted if you do find out something about head skimming and some proven gains out of this.
    There are only two products required to make the universe work properly: Duct tape and WD40. 


    If it moves (and it shouldn't): duct tape. 
If it doesn’t move (and it should): WD40.

    Everything else is just stuff.
     
     

  5.  
    #14
    BMW Fanatic
    Car Details
    Chazaxl's Car Details
    Model of Car:
    535D
    Year of Manufacture:
    2006
    Transmission Type:
    Auto
    Car Body Type:
    Saloon

    Join Date
    May 2010
    Location
    Rochdale, Lancs
    Posts
    59
    Thanks
    10
    Thanked 32 Times in 18 Posts
    Unless you are doing some form of porting, arent you 'only' increasing the compression ratio?

    What will the engine management do with this increase, perhaps retard the timing to compensate for any knocking and then you are back to square 1? Perhaps you need to also consider running higher octane fuel as a minimum or go with some form of throttle body setup to get the max out of increased CR and cams?
     
     

  6.  
    #15
    Dr of BMW
    Car Details
    mistreku's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    1993
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    mistreku's Avatar
    Join Date
    Oct 2009
    Location
    Luton, Beds
    Posts
    1,250
    Thanks
    716
    Thanked 569 Times in 390 Posts
    high octane fuel is a must after skimming, obviously, and it should be all right knocking wise as long as you don't go higher than 11, 11.5. at least that's what ppl generally say. still trying to find out if there's any significant gain, though..
    There are only two products required to make the universe work properly: Duct tape and WD40. 


    If it moves (and it shouldn't): duct tape. 
If it doesn’t move (and it should): WD40.

    Everything else is just stuff.
     
     

  7.  
    #16
    BMW Crazed
    Car Details
    kiwi328's Car Details
    Model of Car:
    e36 328
    Year of Manufacture:
    96
    Transmission Type:
    Manual
    Car Body Type:
    Coupe

    Join Date
    Apr 2010
    Location
    New Zealand
    Posts
    105
    Thanks
    5
    Thanked 30 Times in 25 Posts
    If you go an m52b28(single vanos) engine you can bolt the b25 head on to it. You also get the benefit of a lighter engine. Or you could just shift the cams from the alpina head to the b28 engine. That is assuming alpina cams are just reground b25 cams
     
     

  8.  
    #17
    BMW Crazed
    Car Details
    alpina527's Car Details
    Model of Car:
    M3
    Year of Manufacture:
    2002
    Transmission Type:
    Manual
    Car Body Type:
    Coupe

    Join Date
    Apr 2009
    Location
    Essex
    Posts
    199
    Thanks
    5
    Thanked 71 Times in 56 Posts
    Quote Originally Posted by kiwi328 View Post
    If you go an m52b28(single vanos) engine you can bolt the b25 head on to it. You also get the benefit of a lighter engine. Or you could just shift the cams from the alpina head to the b28 engine. That is assuming alpina cams are just reground b25 cams
    Alpina cams are Schrick billet cams, they aren't regrinds.

    The 325 and 328 heads are the same, so no point in swapping them over. The Alpina cams will drop straight into a 328 lump.
     
     

  9. The Following User Says Thank You to alpina527 For This Useful Post:

    mistreku (25-10-2010)

  10.  
    #18
    BMW Master
    Car Details
    eazy e's Car Details
    Model of Car:
    E36/5 316I COMPACT
    Year of Manufacture:
    1996
    Transmission Type:
    manual
    Car Body Type:
    HATCHBACK

    Join Date
    May 2010
    Location
    bristol
    Posts
    274
    Thanks
    101
    Thanked 145 Times in 109 Posts
    Quote Originally Posted by hamish262001 View Post
    You would need a set of cams as well as mods listed to even get close to 230hp
    Not at all mate lashash put down 228bhp on saturday in his 328 and hasn standard cams afaik
     
     

  11. The Following User Says Thank You to eazy e For This Useful Post:

    lashash (26-10-2010)

  12.  
    #19
    BMW Crazed
    Car Details
    lashash's Car Details
    Model of Car:
    E36 328i Sport
    Year of Manufacture:
    1996
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    lashash's Avatar
    Join Date
    Feb 2009
    Location
    Oxford
    Posts
    218
    Thanks
    232
    Thanked 110 Times in 89 Posts
    easy e is right. 227.9 with a DaveF, Scorpian cat back and a remap. Haven't done the M50 manifold + TB conversion yet, won't be long though. When i do i'll get it on the rolling road again as a comparison.

    Might also get a run on a different rolling road to see if CCE's was putting out high/low figures.
     
     

  13.  
    #20
    BMW Crazed
    Car Details
    alpina527's Car Details
    Model of Car:
    M3
    Year of Manufacture:
    2002
    Transmission Type:
    Manual
    Car Body Type:
    Coupe

    Join Date
    Apr 2009
    Location
    Essex
    Posts
    199
    Thanks
    5
    Thanked 71 Times in 56 Posts
    Quote Originally Posted by lashash View Post
    easy e is right. 227.9 with a DaveF, Scorpian cat back and a remap. Haven't done the M50 manifold + TB conversion yet, won't be long though. When i do i'll get it on the rolling road again as a comparison.

    Might also get a run on a different rolling road to see if CCE's was putting out high/low figures.
    I agree, I think it would be wise to get that figure verified on another dyno. It does look a bit high.
     
     

Page 2 of 3 FirstFirst 123 LastLast
Tags for this Thread

View Tag Cloud

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