357i

iTrader: (4)

After wrecking my supercharged LS1 BMW 325i, I decided to move up to a 5 series. The downside is the car is around 600 lbs heavier... With more weight, comes the need of more power.

The old homemade setup using an Eaton m112 off of a Ford Lightning.



The new car



The engine in.



Then this stuff came in





The setup will be

Turbonetics TC78
All stainless hot side
Homemade manifolds to keep a/c
PTE 46mm wastegate

Turbo placement



Manifolds
Schedule 10 304 stainless. 1.5" and 2" OD




Pulled the motor today after marking the oil pan to notch it some so it will clear the steering rack a little more.



Manifolds an motor, tacking 2.25" v bands on.




Mocking up the cross over pipe
2.25" stainless 16 gauge pipe



And that's where I left off this evening.

I have seen some people use a flex joint in cross overs. What do you guys think?

Jimbo1367

looks great. Awsome looking car. year????

357i

iTrader: (4)

It's a 99 528i

LS1NOVA

iTrader: (12)

Great job with the pipe!

JJMclure

Very nice! Are you changing the rear axle?

Blown02Camaro

iTrader: (4)

This is going to turn out to be an insane car when its done.. Im watching this build

burbalanche

iTrader: (3)

putting a flex in the crossover will make it easier when u go to put it back together after welding.just make sure to use a good flex section.

Blackpanther99

iTrader: (8)

This is gonna be a great build.

Tjabo

An unbelievably clean build so far!

Benwb

iTrader: (1)

where did you order your manifold tubing?

357i

iTrader: (4)

acestainless

Kory 88Iroc Lt1

iTrader: (7)

sweet build. Nice fab work. in for results.
Kory

357i

iTrader: (4)

Had to modify the drivers side motor mount to allow the downpipe to go through it.






Wastegate placement




New crossover pipe



Some new scrap aluminum

Oh4GTO

iTrader: (46)

Your serpentine belt is going to hate you. Cool motor mount idea though.

357i

iTrader: (4)

Here is the final finish on the manifolds. I'm not a fan of shiny things under the hood so I decided to sand blast them then go over them by hand with a scotch-brite pad.




One last full mock up to check some clearances.




Next on my list was to make a little more room for the 4" intake. I cut the "frame rail" and notched it, then welded in a new section.





Also made some brackets for the aluminum radiator the utilizes the stock radiator mounts. More on that later.

allout06

iTrader: (11)

hopefully ur not running an open wastegate.. thats gonna make the engine bay messy. other than that awesome job man.

357i

iTrader: (4)

Nope, will be riunnng a 2" pipe back into the exhaust. Still need to make a notch in the inner fender to make some room for that.

allout06

iTrader: (11)

good good. i looked at the clearance and thought "That is gonna make a mess if he doesnt recirculate that lol..."

JAX04

iTrader: (17)

Wow, nice change of pace. I remember when you did the supercharger build. I like this alot. Good work. Thats def an interesting and unique way to do the turbo. Kick *** for doing something different.

357i

iTrader: (4)

Added a -4 turbo feed fitting to the oil cooler adapter


Here is the notch I had to put in the oil pan. The welds aren't great due to the aluminum being cast and oil saturated...but it's sealed fo sho.



Here is the pan on, turbo feed and drain in place


Lastly I started wiring the motor up. I plan to fire the engine very soon!