bmw 323ci with stage 2 cams & supersprint - Page 6

shifty1982 · 02-10-2012, 09:58 AM

Quote:

Originally Posted by moranor

btw what max RPM you running? the graph shows speed not rpm im trying to work out where the dip is...

Standard redline 7500 or what ever

moranor · 02-10-2012, 10:54 AM

so then the dip is at about 3000rpm?

shifty1982 · 02-10-2012, 11:34 AM

Quote:

Originally Posted by moranor

so then the dip is at about 3000rpm?

Yea that's just before vanos kicks in and the cams do there job the best it's like hitting boost almost when the power band kicks in

Iceman00 · 02-10-2012, 11:51 AM

Quote:

Originally Posted by shifty1982

Yea that's just before vanos kicks in and the cams do there job the best it's like hitting boost almost when the power band kicks in

Vanos is always on.

moranor · 02-10-2012, 11:59 AM

I think im going to do this just need to talk to my local tuners and see what they have to say and how much its going to cost me... so far its looking good

I think these would be even better on a 3l because they would not suffer as much because the dip should be at lower rpm...

Bmw_fever · 02-10-2012, 03:22 PM

Quote:

Originally Posted by moranor

from what i have seen 330i cams make very little difference... if you can get them for nothing and can fit them yourself it might be worth it if not rather get proper performance cams...

Performance cams are expensive, you can get a set of ZHP cams for about 400$... I'm pretty sure they would make about 5-10 HP.

aggieE46 · 02-10-2012, 05:14 PM

I didn't pay much more than that for my Schricks.

Quote:

Originally Posted by Bmw_fever

Performance cams are expensive, you can get a set of ZHP cams for about 400$... I'm pretty sure they would make about 5-10 HP.

shifty1982 · 02-10-2012, 06:13 PM

Quote:

Originally Posted by Iceman00

Vanos is always on.

Sorry when vanos advances is that better

shifty1982 · 02-10-2012, 06:15 PM

Quote:

Originally Posted by moranor

I think im going to do this just need to talk to my local tuners and see what they have to say and how much its going to cost me... so far its looking good

I think these would be even better on a 3l because they would not suffer as much because the dip should be at lower rpm...

I wish I did it to a 3.0l now so yes u are right much more toque than 2.5l when this motor dies I will be getting 3.0l motor

Bmw_fever · 02-10-2012, 08:44 PM

Quote:

Originally Posted by aggieE46

I didn't pay much more than that for my Schricks.

did you get a deal? I thought they were 700.

shifty1982 · 02-10-2012, 08:53 PM

Quote:

Originally Posted by Bmw_fever

did you get a deal? I thought they were 700.

Mine where 1500 so yeah

aggieE46 · 02-10-2012, 09:07 PM

Well, used.

Sent from my PC36100 using Bimmer

moranor · 02-11-2012, 12:18 AM

i can get copies ground for about $800 locally... the place that will cut me some makes cams for most of the race teams here so they have proven they can do the job well... i wont bother with zhp cams too small a gain for the effort i think...

moranor · 02-11-2012, 12:21 AM

@ shifty thats my plan too... if i need a rebuild im going to swap some 3l goodness in there

moranor · 02-20-2012, 01:37 AM

Quote:

Originally Posted by Iceman00

Can someone convert that torque number for me?

sorry Iceman00 i was wrong about the torque figure its not as simple as i thought

you cant just take the N figure and drop the last 0 to get Nm they completely different units

I have found a formula that works using the power figure to calculate torque

Torque [Nm] = 9549 x Power [kW] / Revs [rpm]

so using the graph where peak torque is at 4000rpm

Torque [Nm] = (9549 x 127 [kW]) / 4000 [rpm]
Torque [Nm] = 303Nm at the wheels

so then it has 223ftlb at the wheels

e60fan · 02-20-2012, 12:43 PM

so is it 303/0.85=~356Nm at the flywheel? quite impressive 245Nm in stock...

moranor · 02-20-2012, 01:00 PM

what % you using for loss... if i use 15% i get 348Nm

323I00 · 02-20-2012, 01:27 PM

So cams are worth It on the 323 series from what Im reading.

I wonder how that would play with Ebay headers ,full catback exhaust (no cats) ,cai ,Tms pulleys, and a Shark Injector.

Iceman00 · 02-20-2012, 05:26 PM

Quote:

Originally Posted by shifty1982

Sorry when vanos advances is that better

A little, but I think you mean *retards cam timing, As in, it keeps the valves closed a bit longer.

I could be wrong though....?

Iceman00 · 02-20-2012, 05:26 PM

Quote:

Originally Posted by moranor

sorry Iceman00 i was wrong about the torque figure its not as simple as i thought

you cant just take the N figure and drop the last 0 to get Nm they completely different units

I have found a formula that works using the power figure to calculate torque

Torque [Nm] = 9549 x Power [kW] / Revs [rpm]

so using the graph where peak torque is at 4000rpm

Torque [Nm] = (9549 x 127 [kW]) / 4000 [rpm]
Torque [Nm] = 303Nm at the wheels

so then it has 223ftlb at the wheels

Thanks man, and that number is crazy.

02-10-2012, 09:07 PM	#112
aggieE46 Keep it clean Join Date: Aug 2006 Location: Royse City Posts: 8,011 My Ride: Evo, 330Ci, Xterra View My Garage	Well, used. Sent from my PC36100 using Bimmer __________________ ^No longer looks like this Buy my:: 3.46 Differential Coolant hard line European Head Unit

02-20-2012, 01:27 PM	#118
323I00 Registered User Join Date: Feb 2008 Location: MONTREAL-CANADA Posts: 1,544 My Ride: E46 323I View My Garage	So cams are worth It on the 323 series from what Im reading. I wonder how that would play with Ebay headers ,full catback exhaust (no cats) ,cai ,Tms pulleys, and a Shark Injector. __________________ Functional justification... true. But girls dropping their panties counts for something BBK on non-supercharged-non-m..... because chasecar Last edited by 323I00; 02-20-2012 at 01:29 PM.

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02-10-2012, 10:54 AM	#102
moranor Registered User Join Date: Oct 2010 Location: SA Posts: 98 My Ride: 323i View My Garage	so then the dip is at about 3000rpm?

02-10-2012, 11:59 AM	#105
moranor Registered User Join Date: Oct 2010 Location: SA Posts: 98 My Ride: 323i View My Garage	I think im going to do this just need to talk to my local tuners and see what they have to say and how much its going to cost me... so far its looking good I think these would be even better on a 3l because they would not suffer as much because the dip should be at lower rpm...

02-11-2012, 12:18 AM	#113
moranor Registered User Join Date: Oct 2010 Location: SA Posts: 98 My Ride: 323i View My Garage	i can get copies ground for about $800 locally... the place that will cut me some makes cams for most of the race teams here so they have proven they can do the job well... i wont bother with zhp cams too small a gain for the effort i think...

02-11-2012, 12:21 AM	#114
moranor Registered User Join Date: Oct 2010 Location: SA Posts: 98 My Ride: 323i View My Garage	@ shifty thats my plan too... if i need a rebuild im going to swap some 3l goodness in there

02-20-2012, 12:43 PM	#116
e60fan Registered User Join Date: Jan 2011 Location: BY Posts: 52 My Ride: 525i View My Garage	so is it 303/0.85=~356Nm at the flywheel? quite impressive 245Nm in stock...

02-20-2012, 01:00 PM	#117
moranor Registered User Join Date: Oct 2010 Location: SA Posts: 98 My Ride: 323i View My Garage	what % you using for loss... if i use 15% i get 348Nm