max HP out of NA m42b18
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sjoerd

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max HP out of NA m42b18
« on: July 24, 2014, 02:50:01 PM »
hello,
how do i get the most power out of my e30 318is whitout building a 2.1stroker and i want to keep it reliable, i would like to keep the crank and pistons original and not go to high with the rpm's (about 7-7500).
to begin i was thinking about:
-dbilas throttle body kit,
-dbilas chip,
-stronger valve springs
-and dbilas  264° cams (or do i better thake other cams??)

and than later on i was thinking about:
 -a bigger carbon airbox (will this improve the sound ore performance?)
 -bigger injectors (will this help and will i need other fuel pomp than?)
-and this dbilas Alpha/N unit ->http://www.dbilas-shop.com/Products/Engine-management/-alpha;-N-control-unit/BMW/Electronic-Alpha-N-control-units-BMW-1-8-16V-M42B18-1-9-16V-M44B19::6381.html     what does this specificly do? and can a profesional tuner fine tune my engine with al the mods with this ECU/unit? cause i heard they can't tune the stock ecu?

thanks guys!
« Last Edit: July 24, 2014, 02:54:16 PM by sjoerd »
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alex230ro

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Re: max HP out of NA m42b18
« Reply #1 on: July 25, 2014, 07:36:37 AM »
-dbilas throttle body kit,
-dbilas chip,
-stronger valve springs
-and dbilas  264� cams (or do i better thake other cams??)

should be enough,for cams you can look also at http://www.catcams.com/welcome.aspx

anyway you realise that this mods would cost very much :)

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sjoerd

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Re: max HP out of NA m42b18
« Reply #2 on: July 25, 2014, 02:10:17 PM »
Quote from: alex230ro on July 25, 2014, 07:36:37 AM
-dbilas throttle body kit,
-dbilas chip,
-stronger valve springs
-and dbilas  264� cams (or do i better thake other cams??)

should be enough,for cams you can look also at http://www.catcams.com/welcome.aspx

anyway you realise that this mods would cost very much :)
what power will i be looking at? and doesn't it raise the torqeu band cause it is my sunday/meeting car so i don't just whgant some power at 5500rpm's
in part's it will cost about 3000euro's
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thebrelon

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Re: max HP out of NA m42b18
« Reply #3 on: July 25, 2014, 02:13:00 PM »
Quote from: alex230ro on July 25, 2014, 07:36:37 AM

anyway you realise that this mods would cost very much :)

for not so much gain!  :-\
you may have a look at the cost to gain ratio.
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Vince
'91 318is 230000km stock

sjoerd

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Re: max HP out of NA m42b18
« Reply #4 on: July 25, 2014, 02:55:50 PM »
Quote from: thebrelon on July 25, 2014, 02:13:00 PM
Quote from: alex230ro on July 25, 2014, 07:36:37 AM

anyway you realise that this mods would cost very much :)

for not so much gain!  :-\
you may have a look at the cost to gain ratio.
how much will i probably gain? it's for the looks to
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jrw21

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Re: max HP out of NA m42b18
« Reply #5 on: July 25, 2014, 07:49:20 PM »
Someone correct me if I am wrong. But I don't think stronger valve springs will net you anything valuable if you do not plan on revving the engine.
« Last Edit: July 25, 2014, 08:00:37 PM by jrw21 »
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sjoerd

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Re: max HP out of NA m42b18
« Reply #6 on: July 26, 2014, 12:46:48 AM »
Quote from: jrw21 on July 25, 2014, 07:49:20 PM
Someone correct me if I am wrong. But I don't think stronger valve springs will net you anything valuable if you do not plan on revving the engine.
yup i knew dat, but it's to be shure the 25year old valve springs don't fail on me when i would do 7k rpm's. i don't whant to raise the rpm's much more cause i would need solid lifters than
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wazzu70

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Re: max HP out of NA m42b18
« Reply #7 on: July 26, 2014, 01:37:15 PM »
It depends on the cam lobe profile and RPM limit. A more aggressive lobe profile needs upgraded springs even with factory RPM limit. Its really a combination of lobe lift, lobe profile, and max RPM :)
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-Nick
91 E30 M42 with VEMS

thebrelon

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Re: max HP out of NA m42b18
« Reply #8 on: July 26, 2014, 02:20:37 PM »
Quote from: sjoerd on July 25, 2014, 02:55:50 PM
Quote from: thebrelon on July 25, 2014, 02:13:00 PM
Quote from: alex230ro on July 25, 2014, 07:36:37 AM

anyway you realise that this mods would cost very much :)

for not so much gain!  :-\
you may have a look at the cost to gain ratio.
how much will i probably gain? it's for the looks to

I don't have first hand experience and knowledge, but from a stock bottom end, with stock Rv I wouldn't expect (much) more than 20hp!
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Vince
'91 318is 230000km stock

sjoerd

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Re: max HP out of NA m42b18
« Reply #9 on: July 27, 2014, 03:12:05 AM »
what is 'RV I'? and with a chip allone i can alredy gain 10hp? cams and intak have to be more?
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sjoerd

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Re: max HP out of NA m42b18
« Reply #10 on: July 27, 2014, 03:18:37 AM »
Quote from: wazzu70 on July 26, 2014, 01:37:15 PM
It depends on the cam lobe profile and RPM limit. A more aggressive lobe profile needs upgraded springs even with factory RPM limit. Its really a combination of lobe lift, lobe profile, and max RPM :)
what are the max rpm's i can do without modding the liftern or somthing else? i heard it was about 7200rpm?
these are the spec's of the cams: Grad: 264°          Valve lift: 10,4
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thebrelon

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Re: max HP out of NA m42b18
« Reply #11 on: July 27, 2014, 08:37:40 AM »
Quote from: sjoerd on July 27, 2014, 03:12:05 AM
what is 'RV I'? and with a chip allone i can alredy gain 10hp? cams and intak have to be more?

Sorry RV stands for Cr in french...
10ish with a chip yes, 264 cam is not much more than stock and intake with an otherwise stock engine won't yield much. It will move your power band higher and you will probably loose in the low end.
And if the intake is not properly tuned to the exhaust, cams, Cr with a proper tune, not a generic chip, you won't extract the full potential of your "add-ons".
This is not to be negative but to warns you!
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Vince
'91 318is 230000km stock

sjoerd

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Re: max HP out of NA m42b18
« Reply #12 on: July 27, 2014, 11:58:04 AM »
Quote from: thebrelon on July 27, 2014, 08:37:40 AM
Quote from: sjoerd on July 27, 2014, 03:12:05 AM
what is 'RV I'? and with a chip allone i can alredy gain 10hp? cams and intak have to be more?

Sorry RV stands for Cr in french...
10ish with a chip yes, 264 cam is not much more than stock and intake with an otherwise stock engine won't yield much. It will move your power band higher and you will probably loose in the low end.
And if the intake is not properly tuned to the exhaust, cams, Cr with a proper tune, not a generic chip, you won't extract the full potential of your "add-ons".
This is not to be negative but to warns you!
can't dbilas make a specific chip for my setup?
and if i buy the alphaN unit instead of the chip and let e profesional tune my enigine with the mods it would be much bether?
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thebrelon

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Re: max HP out of NA m42b18
« Reply #13 on: July 27, 2014, 02:00:42 PM »
MUCH better not, but better yes. anyway, alpha-N is not the best either, but you would still get the power...

regarding chip tuning and as long as you install a chip without going on the rolling road to fine tune it it will still be a generic chip, which may do a good job by the way, or not, or not the best. but I think you get the point...  ;D

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Vince
'91 318is 230000km stock

wazzu70

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Re: max HP out of NA m42b18
« Reply #14 on: July 27, 2014, 09:47:44 PM »
The Dbilas setup is not tunable. Its not an alpha-n box either as it still requires the AFM.

Either way, the ECU add on is not a tunable setup.
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-Nick
91 E30 M42 with VEMS
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