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E89 4 pot or 6?

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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Nick9one1
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E89 4 pot or 6?

Post by Nick9one1 » Tue Oct 09, 2018 10:24 am

^

Yes I completely agree, anyone that tells you the N20's can keep up with an N54 hasn't tried.
My 35i is stage 2+ with DP, intercooler and charge pipe. It eats E92 M3's for breakfast :evil:

This is a fairly heavily tuned Z4 35i beating quite a few cars in the drag strip!

(Rolling start at 50kph)


https://youtu.be/GqB7k5dac-o
Last edited by Nick9one1 on Wed Oct 10, 2018 11:26 am, edited 1 time in total.
Z4 35i Space Gray, Red Leather
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MHD 98RON Stage 2+
395 BHP :driving:

Clobber
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E89 4 pot or 6?

Post by Clobber » Tue Oct 09, 2018 10:37 am

Do the N20 engined cars need uprated brakes etc when modded to stage1/stage2 ?
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E89 4 pot or 6?

Post by Nick9one1 » Tue Oct 09, 2018 10:39 am

cowboyjon wrote: Tue Oct 09, 2018 10:11 am I much prefer n/a cars over forced induction so it was the 6 cylinder 3.0 all the way for me.

The fact that it is more reliable, gives decent fuel economy and tax bracket is just icing on the cake.

To be honest all the above is pretty much the main reason why I have chosen a 3.0 over a 370z or even an s2000.

It just ticks all the boxes for me.
I dont think you're quite right about the tax. Turbo'd cars always beat N/A cars on emissions at the same power level. This is partly the reason manufacturers are moving towards small engine forced induction these days. Better economy and lower emissions.

I've updated my Table to include Tax.
28i vs 30i similar power, but the 28i is faster to 60. £100 cheaper in road tax
30i vs 35i/is only £25 more road tax but far more powerful

Image
Z4 35i Space Gray, Red Leather
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP :driving:

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E89 4 pot or 6?

Post by Smartbear » Tue Oct 09, 2018 10:41 am

Nick9one1 wrote: Tue Oct 09, 2018 10:24 am ^

Yes I completely agree, anyone that tells you the N20's can keep up with an N52 hasn't tried.
My 35i is stage 2+ with DP, intercooler and charge pipe. It eats E92 M3's for breakfast :evil:

This is a fairly heavily tuned Z4 35i beating quite a few cars in the drag strip!

(Rolling start at 50kph)


https://youtu.be/GqB7k5dac-o
I think your getting mixed up between n52 & n54 engines?
N20 can outperform the n52 :thumbsup:
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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E89 4 pot or 6?

Post by cowboyjon » Tue Oct 09, 2018 10:44 am

Nick9one1 wrote: Tue Oct 09, 2018 10:39 am
cowboyjon wrote: Tue Oct 09, 2018 10:11 am I much prefer n/a cars over forced induction so it was the 6 cylinder 3.0 all the way for me.

The fact that it is more reliable, gives decent fuel economy and tax bracket is just icing on the cake.

To be honest all the above is pretty much the main reason why I have chosen a 3.0 over a 370z or even an s2000.

It just ticks all the boxes for me.
I dont think you're quite right about the tax. Turbo'd cars always beat N/A cars on emissions at the same power level. This is partly the reason manufacturers are moving towards small engine forced induction these days. Better economy and lower emissions.

I've updated my Table to include Tax.
28i vs 30i similar power, but the 28i is faster to 60. £100 cheaper in road tax
30i vs 35i/is only £25 more road tax but far more powerful

Image
Sorry fella you misunderstand me.

When I mentioned tax I'm talking relative to other petrol engines (doesn't even have to be 3 litres) pushing similar performance figures.

An s2000 from 2005 onward or any 370z are all max tax brackets while the 3.0 n/a is not even close.
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E89 4 pot or 6?

Post by Pbondar » Tue Oct 09, 2018 10:55 am

Once you start talking about after market performance upgrades you really need to look at bang per pound spent.....

The N20 for a £350 ECU reflash goes from around 185BHP to 280BHP..that just be about the best value going...

Most of the mods that start with inter coolers / charge pipes / exhaust systems / turbos etc quickly run into £1000s...

As others have said, and it’s analogous to the E89 brake upgrades, you can spend a lot of money to look cool, but the on street braking performance won’t be much different....

A track car is a different beast to on road usage...you can never extend the car enough to get the benefit of some of the more exotic goodies...

Pbondar

E89 4 pot or 6?

Post by Pbondar » Tue Oct 09, 2018 10:57 am

Clobber wrote: Tue Oct 09, 2018 10:37 am Do the N20 engined cars need uprated brakes etc when modded to stage1/stage2 ?
Not really, even though they don’t look sexy, on the road the N20 engined E89s brake adequately even when re-mapped..

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E89 4 pot or 6?

Post by R60BBA » Tue Oct 09, 2018 11:25 am

How reliable is a remapped N20 vs a stock N52 is another question :poke:
Current: 2002 E46 M3
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI

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E89 4 pot or 6?

Post by Smartbear » Tue Oct 09, 2018 1:19 pm

R60BBA wrote: Tue Oct 09, 2018 11:25 am How reliable is a remapped N20 vs a stock N52 is another question :poke:
They seem pretty robust so far, don’t forget my (standard) 19k mile 30i sh#t itself! :poke:
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

Pbondar

E89 4 pot or 6?

Post by Pbondar » Tue Oct 09, 2018 1:55 pm

R60BBA wrote: Tue Oct 09, 2018 11:25 am How reliable is a remapped N20 vs a stock N52 is another question :poke:
Time will tell, but, it does have a forged crankshaft rather than the N52 cast crankshaft, it benefits from all the in service experience of previous generations, such as improved head cooling to stop the injectors/coils going south prematurely.

The twin scroll turbo doesn’t seem to have manifested any great issues unlike its earlier cousins on the 35i.

It’s usally mated to the ZF 8 HP 45 box that is good for more torque than you can get out of a remapped N20.

So providing you keep it south of 300 bhp in a road car it looks like it should go on for a long time.

All IMHO...

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E89 4 pot or 6?

Post by Marlon » Tue Oct 09, 2018 3:01 pm

Nick9one1 wrote: Tue Oct 09, 2018 10:39 am
cowboyjon wrote: Tue Oct 09, 2018 10:11 am I much prefer n/a cars over forced induction so it was the 6 cylinder 3.0 all the way for me.

The fact that it is more reliable, gives decent fuel economy and tax bracket is just icing on the cake.

To be honest all the above is pretty much the main reason why I have chosen a 3.0 over a 370z or even an s2000.

It just ticks all the boxes for me.
I dont think you're quite right about the tax. Turbo'd cars always beat N/A cars on emissions at the same power level. This is partly the reason manufacturers are moving towards small engine forced induction these days. Better economy and lower emissions.

I've updated my Table to include Tax.
28i vs 30i similar power, but the 28i is faster to 60. £100 cheaper in road tax
30i vs 35i/is only £25 more road tax but far more powerful

Image
Very useful table - thanks :thumbsup:
Image
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911 997 Carrera S

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E89 4 pot or 6?

Post by R60BBA » Tue Oct 09, 2018 3:10 pm

Smartbear wrote: Tue Oct 09, 2018 1:19 pm
R60BBA wrote: Tue Oct 09, 2018 11:25 am How reliable is a remapped N20 vs a stock N52 is another question :poke:
They seem pretty robust so far, don’t forget my (standard) 19k mile 30i sh#t itself! :poke:
Rob
What happened to it?
Current: 2002 E46 M3
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI

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E89 4 pot or 6?

Post by Smartbear » Tue Oct 09, 2018 4:02 pm

R60BBA wrote: Tue Oct 09, 2018 3:10 pm
Smartbear wrote: Tue Oct 09, 2018 1:19 pm
R60BBA wrote: Tue Oct 09, 2018 11:25 am How reliable is a remapped N20 vs a stock N52 is another question :poke:
They seem pretty robust so far, don’t forget my (standard) 19k mile 30i sh#t itself! :poke:
Rob
What happened to it?
The gearbox synchros went, it sounded as though it was turning itself into swarf every time I wanted 2nd gear, it was a shame as I really liked the car :(
605ACDD4-9972-4C31-9C14-2BF5EFD8C595.jpeg
605ACDD4-9972-4C31-9C14-2BF5EFD8C595.jpeg (351.36 KiB) Viewed 849 times
The dealer gave me my money back after looking into the repair cost :roll:
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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E89 4 pot or 6?

Post by R60BBA » Tue Oct 09, 2018 4:35 pm

Smartbear wrote: Tue Oct 09, 2018 4:02 pm
R60BBA wrote: Tue Oct 09, 2018 3:10 pm
Smartbear wrote: Tue Oct 09, 2018 1:19 pm They seem pretty robust so far, don’t forget my (standard) 19k mile 30i sh#t itself! :poke:
Rob
What happened to it?
The gearbox synchros went, it sounded as though it was turning itself into swarf every time I wanted 2nd gear, it was a shame as I really liked the car :(
605ACDD4-9972-4C31-9C14-2BF5EFD8C595.jpeg
The dealer gave me my money back after looking into the repair cost :roll:
Rob
That’s a shame but what’s a gearbox failure got to do with N52 though :?

That could’ve happened on any Z4 buddy or BMW or car for that matter! :roll:
Current: 2002 E46 M3
Current: 2005 997 Carrera S
Gone: 2004 R53 Cooper S
Gone: 1998 E31 840Ci Sport
Gone: 2007 Z4 E86 3.0Si Sport
Gone: 2001 Z3 E36/7 2.2i San Remo Individual
Gone: 2015 F21 116d M Sport
Gone: 2012 A3 Sportback 1.2TFSI

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E89 4 pot or 6?

Post by Smartbear » Tue Oct 09, 2018 5:51 pm

R60BBA wrote: Tue Oct 09, 2018 4:35 pm
Smartbear wrote: Tue Oct 09, 2018 4:02 pm
R60BBA wrote: Tue Oct 09, 2018 3:10 pm What happened to it?
The gearbox synchros went, it sounded as though it was turning itself into swarf every time I wanted 2nd gear, it was a shame as I really liked the car :(
605ACDD4-9972-4C31-9C14-2BF5EFD8C595.jpeg
The dealer gave me my money back after looking into the repair cost :roll:
Rob
That’s a shame but what’s a gearbox failure got to do with N52 though :?

That could’ve happened on any Z4 buddy or BMW or car for that matter! :roll:
True, in that case I’ve heard of cylinder heads being changed under warranty to get rid of the lifter tick they can suffer from & there’s been several cases of fried motors due to expiring water pumps :?
Ccv’s seem to be on a knife edge of working or gumming up causing oil burning issues, apart from these things they seem to be long lasting :thumbsup:
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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