Modern BMW 3-Series turbo inline-6 power for an older 3-Series

[mrcheezle19]

I would love a n54 swap. JB4 and a a downpipe with new exhaust and you'd have a rocket. Hell do the RB turbos and then you'd really be flying. Someone really needs to make a path for these swaps.

[Wanganstyle]

The N54 is the twin turbo predecessor to the N55 single turbo(twin scroll design). The n55 weights 45ish lbs less than the N54 with the heavy cast manifold for the twin setup. The twin scroll makes the same amount of power as the twin turbo setup and with turbo mods it was making over 400hp while racing for the South African team.

N54 weighs in at 430lbs so the N55 is roughly 385lbs and the N20 is 304lbs

N54 twin turbo manifolds are very light.

They integrate the turbo housing;

Both turbochargers and exhaust manifolds of a n54 probably don't weight much more than 50 lbs.

I've had a set at my place- I'm sure someone has a set hanging out and can just weigh them.

As for power both are great; N54 makes over 450rwhp on stock turbochargers and fuel with downpipes and a boost up / remap


As far as the age old twin vs single turbo debate. ...

Oem twins is killer. I've had the same engine (2JZ) in NA, single turbo, twin turbo.

Parallel Twin turbo is the best all round powerband

[Dozyproductions]

thanks f34r. Not bad numbers, and the n20 even better. I'm guessing a chassis swap would be required for that to happen?

[F34R]

what's the weight compared to s5x?

The N54 is the twin turbo predecessor to the N55 single turbo(twin scroll design). The n55 weights 45ish lbs less than the N54 with the heavy cast manifold for the twin setup. The twin scroll makes the same amount of power as the twin turbo setup and with turbo mods it was making over 400hp while racing for the South African team.

N54 weighs in at 430lbs so the N55 is roughly 385lbs and the N20 is 304lbs

[CorvallisBMW]

n55s are amazing, but i'd rather have the n20. It weighs less and still makes more hp and torque stock than a tuned s52.

[Dozyproductions]

what's the weight compared to s5x?

[F34R]

Chassis swap aside...the n55 swap is perfection. Light and can make more power than the s54 with just a tune. Some nut will pave the way for a e30 swap with proper management.

[Roysneon]

It's cool, but to me that's more of a chassis swap. When you move all the wiring and everything related to it to a new car, that's not so much what I call an 'engine swap'. Still really cool to see the engine sitting in the bay, but if that's what it takes to make this work I'd rather just keep my e30 an e30 and put an s54 in it.

[Julien]

so freakin' cool

[ST1G]

He couldn't get a steering wheel that hasn't been in an accident?

[torreira]

Pictrures and. video below
LINK: http://www.bimmerboost.com/content.p...p-with-I-Drive