e46 323i tune

[moranor@axis]

Hi Mr Smooth

i have been meaning to pop by some time to have a chat, but i thought why not discuss it here so it can maybe help other members...

i have an e46 323i which is being built as a drift car...

i will soon be chipping it will you :rollsmile:

so far i have done a 6 speed conversion with a 3.38 diff a mandrel bent duel 57mm free flow with viper branches i am working on a custom short ram CAI...

im wondering what rpm i should put the limiter at when i get it tuned... with some help from a forum member (Raybimmer) based on a calculation using piston speed i should in theory be able to run up to 7619 rpm...

but i have no idea if the hydraulic lifters, con rod and bearings will take 7500 rpm...

most tuners seem comfortable taking it to 7000 rpm... so my thinking was if the a 328i can run at 7000 rpm safely and my car has the same bore, but it has a shorter stroke it should be able to rev a little higher...

please advise me :rollsmile:

 

[Smooth-ZN]

Hi Mr Smooth

i have been meaning to pop by some time to have a chat, but i thought why not discuss it here so it can maybe help other members...

i have an e46 323i which is being built as a drift car...

i will soon be chipping it will you :rollsmile:

so far i have done a 6 speed conversion with a 3.38 diff a mandrel bent duel 57mm free flow with viper branches i am working on a custom short ram CAI...

im wondering what rpm i should put the limiter at when i get it tuned... with some help from a forum member (Raybimmer) based on a calculation using piston speed i should in theory be able to run up to 7619 rpm...

but i have no idea if the hydraulic lifters, con rod and bearings will take 7500 rpm...

most tuners seem comfortable taking it to 7000 rpm... so my thinking was if the a 328i can run at 7000 rpm safely and my car has the same bore, but it has a shorter stroke it should be able to rev a little higher...

please advise me :rollsmile:

Hi

The 323i is actually a 2500cc cubic capacity engine ,which is de-tuned via software .we however allow it to be a 2.5 l.when software tuning this engine type ,and in our opinion ,if the specific hardware is not accomodated for .it is unnecessary ,to rev this engine past 7200rpm.in its standard trim ,as the power will taper off just after ,6600rpm ,another problem will be hydrauic valve compensation ,which accomodates for the tappet clearance's ,they seem to 'bleed off' within the 7200 rpm,with oil temp over 100 degrees cel's ,the max value lift wont be achieved.thus creating,even less power !
If the need occur's to extend the engine rev's into this field, steps that need to be addressed would be .to have the oil pressure to the hydraulic compensator's increased , or a 'solid lifter' set up implemented ,as the the first measure ,other options ,1) increase the camshaft duration ,this will also lengthen or extend the drop off at the end ,2)solid lifter option,to prevent lifter drainage
3)stiffer valve return springs's ,to prevent "valve bounce"
Those are for starters...

 

[moranor@axis]

thanks for the reply...

looking at my stock dyno it looks like there is no sign of drop off i thought the exhaust would improve this, but if the lifters cause drop off then i guess there will be no point in making it rev more...

realisticly what power am i looking at after the chip?

the car will be supercharged later...
will the head work help later with the supercharger or should i rather leave it...

i would like to optimize the NA tune and get the most i can out of it for now, but i dont want to go mad on the NA tune because i would rather spend that money on the SC

 

[Smooth-ZN]

thanks for the reply...

looking at my stock dyno it looks like there is no sign of drop off i thought the exhaust would improve this, but if the lifters cause drop off then i guess there will be no point in making it rev more...

realisticly what power am i looking at after the chip?

the car will be supercharged later...
will the head work help later with the supercharger or should i rather leave it...

i would like to optimize the NA tune and get the most i can out of it for now, but i dont want to go mad on the NA tune because i would rather spend that money on the SC

Are you at Coast or reef? At the coast we will deliver 20-28kw @ fly and 50nm, and with New pricing by Ob, it will cost R2000:=):

I will pm you more work that we do in N/A form without changing hardware for Maximum Gains

 

[moranor@axis]

im in pmb :rollsmile: i may have spoken to you before about my car will wait for PM

is R2000 for chip or flash?

 

[Smooth-ZN]

im in pmb :rollsmile: i may have spoken to you before about my car will wait for PM

is R2000 for chip or flash?

Check your pm

 

[moranor@axis]

decided to pop into chiplogic on friday no shoes and all...

got taken on a quick tour (workshop filled with bmws) they doing some very interesting work there...

my mind is now completely made up and ill be going all my tuning there...

 

[George Smooth]

Hi Mr Smooth

i have been meaning to pop by some time to have a chat, but i thought why not discuss it here so it can maybe help other members...

i have an e46 323i which is being built as a drift car...

i will soon be chipping it will you :rollsmile:

so far i have done a 6 speed conversion with a 3.38 diff a mandrel bent duel 57mm free flow with viper branches i am working on a custom short ram CAI...

im wondering what rpm i should put the limiter at when i get it tuned... with some help from a forum member (Raybimmer) based on a calculation using piston speed i should in theory be able to run up to 7619 rpm...

but i have no idea if the hydraulic lifters, con rod and bearings will take 7500 rpm...

most tuners seem comfortable taking it to 7000 rpm... so my thinking was if the a 328i can run at 7000 rpm safely and my car has the same bore, but it has a shorter stroke it should be able to rev a little higher...

please advise me :rollsmile:

Hi

The 323i is actually a 2500cc cubic capacity engine ,which is de-tuned via software .we however allow it to be a 2.5 l.when software tuning this engine type ,and in our opinion ,if the specific hardware is not accomodated for .it is unnecessary ,to rev this engine past 7200rpm.in its standard trim ,as the power will taper off just after ,6600rpm ,another problem will be hydrauic valve compensation ,which accomodates for the tappet clearance's ,they seem to 'bleed off' within the 7200 rpm,with oil temp over 100 degrees cel's ,the max value lift wont be achieved.thus creating,even less power !
If the need occur's to extend the engine rev's into this field, steps that need to be addressed would be .to have the oil pressure to the hydraulic compensator's increased , or a 'solid lifter' set up implemented ,as the the first measure ,other options ,1) increase the camshaft duration ,this will also lengthen or extend the drop off at the end ,2)solid lifter option,to prevent lifter drainage
3)stiffer valve return springs's ,to prevent "valve bounce"
Those are for starters...

Whatever he said :thumbs::flyfun:

 

[moranor@axis]

i cant wait to get this done now... just need to sort some things 1st... if i get the projected 20-28kw @ fly and 50nm i will be very very happy :rollsmile: