[TroyDeJ]

im wondering if anyone can tell me the key differences that allow the s54 to make 333hp from only an extra .2 liters from the n52? is it from the ITBs or compression ratio?

[jc5988]

Originally Posted by TroyDeJ

im wondering if anyone can tell me the key differences that allow the s54 to make 333hp from only an extra .2 liters from the n52? is it from the ITBs or compression ratio?

i think the key is the hotter camshaft and stiffer valve spring with stronger internal.

also it doesnt have valvetronic.

[jasperxli]

are you being serious? its everything. itb, compression, head, design, its different from top to bottom. i would understand a n54 vs n52 question but s54 vs n52? thats like comparing a gt500 to a 5.0 mustang. totally different

[flinchy]

Originally Posted by TroyDeJ

im wondering if anyone can tell me the key differences that allow the s54 to make 333hp from only an extra .2 liters from the n52? is it from the ITBs or compression ratio?

Itb's, more compression, agressive camshafts, better exhaust

Worse engine note stock though, blech

[CombatNinja]

I'm assuming the S54 revs higher as well. Also pretty sure it would no longer be emissions-compliant. Oh, and it got pretty bad fuel economy too if I remember correctly.

This is like me wondering why my S2000 makes 240hp from 2.2L and comparing it to my 328. Apples to oranges...

[flinchy]

Originally Posted by CombatNinja

I'm assuming the S54 revs higher as well. Also pretty sure it would no longer be emissions-compliant. Oh, and it got pretty bad fuel economy too if I remember correctly.

This is like me wondering why my S2000 makes 240hp from 2.2L and comparing it to my 328. Apples to oranges...

Peak power at 7900rpm, so yeah higher lol

Ed: you can get a 3.2 stroker kit that makes over 300hp on stock cams and exhaust etc.

With exhaust headers tune etc you should see over 330hp

Stroker kit is worth more than an s54 swap, andeven more than my soon n54 swap

People selling this stuff are pretty bad at business.

[TroyDeJ]

Originally Posted by flinchy

Peak power at 7900rpm, so yeah higher lol

Ed: you can get a 3.2 stroker kit that makes over 300hp on stock cams and exhaust etc.

With exhaust headers tune etc you should see over 330hp

Stroker kit is worth more than an s54 swap, andeven more than my soon n54 swap

People selling this stuff are pretty bad at business.

your swaping an n54? please keep us posted on how thats going, but why do it if you can sell your car and get a 335 for the price of the swap?

[andrey_gta]

i think in Australia n54 engined cars cost much higher...

Plus he has a e87 hatch, that should be a fun result

[flinchy]

Originally Posted by TroyDeJ

your swaping an n54? please keep us posted on how thats going, but why do it if you can sell your car and get a 335 for the price of the swap?

i bought my 130i for $31k in november on a personal loan, it's worth $25k if i'm lucky now (still $28kish on loan, bad interest rate, gotta refinance) and it has a bit of damage hit a feral cat etc. lol

if i want a BSM 135i in manual with decent kilometers, decent condition paint, sunroof/rear PDC (same options i have all around) it'll be MAYBE $45k if i'm lucky (plus on road costs.. tax etc.), likely $50k+ (especially if i don't want to go interstate)

and there's only 12 manual 335's (over 100 step) in australia

and they're all E92/E93, i'm a fan of E90 3ers lol

cheapest man 335i is 41k at 115,000km

all others are 55+

i can get the motor and all accessories (turbo etc) for $3.5k, then i just need a HPFP, gearbox bellhousing adapter plate, stock exhaust/dp's and intercooler/piping (2nd hand, cheap as) and a workshop to install, wire, and code for manual, and i'll get it reconditioned for about $1k. i'm hoping <10k installed pretty easily, all going smoothly

definitely going to keep everyone posted

Originally Posted by andrey_gta

i think in Australia n54 engined cars cost much higher...

Plus he has a e87 hatch, that should be a fun result

unfortunately, yes haha

and yeah, there's only a couple of N54 E87's in the world as far as i can tell

[andrey_gta]

Same here, I bought my 128i in Nov 2011 too. Personal loan/Credit line, almost paid off.

Good luck with the swap!

I wonder if the F30 M3 engine will ever fit in our engine bays....twin turbo or 3 turbo n55 variant... One can dream...lol