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draggin' ass
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I really dig your BMW LS builds. I would want a wagon myself but their all fun to watch get built. Will the rear diff and axles hold up to the 4.8?
 

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Discussion Starter #23
Started working on a coolant expansion tank. Stole the idea from Samberg and making a tank that will bolt to the passenger side cylinder head.




Also bought a Paxton blower inlet to use as a throttle body elbow. Its 3.5" in/out and just over 3" tall. I needed something super tight due to the added intake length of the nitrous plate.

 

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Discussion Starter #24
Made some good progress today. Finished the driver side header modifications. Extended it to the sway bar area because messing with bolts or vband clamps right next to the steering link is just stupid.





Started on the y pipe to mate up with the rest of the exhaust.



Welded in the new battery tray. Going to spray it with Duplicolor Arctic White for a close enough match.



Finally starting to look like a car again.



Surprisingly the ride height hasn't changed at all even with the iron block.

 

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Discussion Starter #25
Quick update. Mostly waiting on USPS and Fedex at this point for more parts.

I wanted something clean and configurable for power switching so I'm using an ssVec fuse/relay box from Eaton. Turned out to be a really nice piece. Also relocated the battery to the trunk with OE stuff from a coupe.





Made a quick coolant crossover pipe from some scrap leftover in the bin.


Also have a new C101 connector and pins. Just waiting on the rubber boot cap and thatll finish off the engine to chassis wiring.

 

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Discussion Starter #27
Got my ECU all mounted up. It actually bolted up to the factory Motronic mounts and fit with some minor cover/glovebox trimming. Enough real estate under the cover for my bluetooth adapter as well.



Got my passenger side header squared away. It's from a 5th gen Camaro shorty set. One runner took a little massaging for the frame rail clearance but it was pretty minor. Exhaust should be finished up this weekend.


Intake pipe and coolant tank finished up. Had to use OE style hose clamps since everything is so narrow.



Lower radiator hose setup. 135 degree silicone bend, 1.5 u bend, 1.5 straight coupler


Bent up some hardlines for most of the trans cooler run. Way cheaper than AN hose.
 

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Discussion Starter #28
Tomorrow will be one month since I started. Getting to the final stretch. Filled the motor with oil. All the wiring, minus some battery power connections, is finished up. Just need to install my shift kit in the trans, source a 2.79LSD and install some hose clamps, air filter, trans cooler and radiator fan. Used an F-body power steering hose and just welded the banjo fitting off the old BMW hose. Finished up the exhaust as well.







 

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Discussion Starter #31
Fired it up on 7 coils today. Freshly motivated to finish the rest of little stuff. Trans is still empty so didn't let it run for more than a few seconds.


Also took the M3 out for a rip today.



 

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Discussion Starter #32
Pretty much a diff, driveshaft, silicone coupler and throttle cable away from doing burnouts. Topped all the fluids off and let it run for an hour or so. Didn't get over 186 holding the motor at 4k rpm for awhile. No higher than 181 at idle. Just running the stock radiator with a 16" Spal pusher.

Can't wait to get it back on the road every day.

 

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Discussion Starter #35
Got ahold of a 2.79 open diff for $50. I was going to weld it, but saw there were ebay knock offs of the Phantom Grip style "lsd" conversions and picked one up for $55 shipped. I've used these before quite a few years back doing turbo MR2 spyders and nobody wanted to pony up for a Quiaife diff. They werent perfect, but they put the power down for cheap.

As long as I can get a customer's turbo M3 off my lift this weekend, I should be on the road sometime next week. Had to trim some hood bracing to clear the intake pipe but everything fits now.



 

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congrats on getting it running..... cool swap!
 

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Discussion Starter #38
Actually had it on the road Tuesday. My $200 mystery transmission is fucked up and needs to come out and the spare diff I had laying around has an input bearing growl. Must have been dropped at some point.

Hopefully back in daily driver mode before the end of the month.
 

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Discussion Starter #39
Has some initial issues to deal with. The original 2.79 open diff I installed ate the pinion bearing within 4 miles. I can only assume it was dropped at some point for how fast the cage disintegrated. I bought a 2.79 LSD and that has been good. The trans fluid also developed a pepto bismal hue indicated the converter or trans had water in it. I tore the trans down and rebuilt it and did the required mods to make it a full manual deal. Good thing I tore it down as the frictions had started to delaminate from the backing plates.

Drove it to work this morning and coolant temps never got over 183. Cruised at 3k rpm 75 and made the 60 mile trek without issue. Ill probably go to a hydroboost setup in the near future. Not a huge fan of the manual brakes so far.









Machined center support for better fluid flow on the direct feed mod.


Shit that washed off all the hard parts as they were cleaned.




Machining the pressure plates to get .050" of clutch clearances. I didn’t want to wait to order thinner steels, so this was the easiest way.






Reunited with the rest of the Alpinewies


 

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Glad to see you got it back together.
 
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