M20B29 w/ Triple Webers into my '71 2002

[F34R]

That Nardi <3 loving the build, looks so good.

[catuned]

Very slick!

[SkiFree]

Hidden Stereo write-up.
Let me be VERY upfront, I am NOT a stereo guy, none of this would have been possible if it had not been from input by several members here and on the faq board (Micah, Marshall, Stereoinstaller, Andrew, ken, and others).

The goal, completely hidden, ipod controlled stereo setup that retains a Becker head unit.

The speaker, wiring, and amp specifics is on the wiring diagram, if someone wants it (a lot larger and legible file) please email me.



MATERIALS.
...were mostly from Jo-Anns (my wife loves pointing that out to me everytime she gets in the car).

-marine-grade black vinyl which surprisingly matched the original vinyl perfectly. (for front console and front speaker panels)
-open-cell foam (for rear speaker shelf)
-Headliner foam (for front speaker insolation)
-speaker cloth (for rear speaker shelf and front speakers)
-black micro-suede (for center ash tray)
-dynamatt (for rear speaker shelf)
-wood (for amp shelf and rear speaker shelf)
-interior carpet (for amp shelf)

CENTER CONSOLE:



Re-wrapped in vinyl, on the center ash tray I used a dremel to whittle away at the retention clip to allow clearance for the ipod. Wrapped the inside with micro-suede/



Made a hole in the backside for the ipod connector.



Enlarged the stereo opening for becker and made backside support arm (ran a new cheap speaker for the becker).



Finished off with this beautiful hand-made shift knob by David (I think it’s proportioned perfectly to the car, not diminutive like the alpina knob).

(http://www.bmw2002faq.com/component/...opic/t,379457/ )



FRONT SPEAKERS:
Driver’s side, I used the stock under dash panel, (Thanks to Ken Blasko). Cut out speaker hole wrapped it in vinyl, insolated the backside and stretched over some speaker cloth.





Passenger’s side, made new panel as the stock piece was warped to badly. Repeated same steps as driver’s side.






REAR SPEAKERS:
Basically copied what Marshall did, new rear panel attached speakers. Layered the dynamat, foam and speaker cloth. Micah gave me the idea to use bang matts for the rear speakers to sit in. The bang matts help to seal the rear panel keeping out fumes, plus you can’t see the ugly speakers jutting into your trunk.





AMPLIFIER
I made a little wood shelf that fit in nicely (covered in carpet), mounted the amp and signal booster to it. Drilled a couple of wire access holes and was set!



Wired everything up according to the diagram…..



The volume control knob is the old choke-cable knob on the steering column. Welded a piece of the old threaded cable end to the JL-supplied supplied adjuster, and wah-lah!



The interior looks better than it has in a long long time, now it sounds better too!

[MR 325]

That will be the perfect setup Andrew. Still nice and drivable!

[catuned]

Sweet

[SkiFree]

I can't wait to see those Webers on the engine!

Preaching to the Choir! Can't happen soon enough.

Clutch and Flywheel setup:



Lightened/balanced stock 325i single mass flywheel:

18.5 pounds stock machined down to 13.8 pounds. Wouldn't want to go more than that. You can see that machining the lip any closer to the ring gear can cause the ring gear loose. You'd be able to flip the flywheel over and extend the center bevel for a bit more weight savings but the minute amount of material you'd be able remove doesn't justify the added effort/expense in my mind.



E30 M3 Pressure Plate (not sport):
Stiffer center diaphragm spring over the 325i pressure plate (but not quite as stiff as the Clutch Masters +1 pp), should be just right for a hot-rod street engine.

E30 clutch disk and throwout bearing:
Debated going to Kevlar, but since there will be a fair amount of stop and go the stock disk should be up to the job.

Not bothering with the Spec and F1 setups, simply have seen too many fail. Common problems and failure points: tolerances on clutch disk splines not very accurate, pressure plate side straps made from some less-than-ideal material (snapping under a hard shift), disk de-laminating, etc. While they are a bargain, just not worth skimping on.

[deutschman]

Wow Andrew! Great job on those stacks. They look great, and I think they will sound really nice as well.

[FunfGan]

This is so fantastic.

[CorvallisBMW]

I can't wait to see those Webers on the engine!

[2002maniac]

Great build! I miss my 2002s.

[SkiFree]

Heyoh! Back from the powder-coaters. One more thing down.



Another "workbench update" almost ready to start putting in the stereo. Will have writeup in within the next couple weeks.

[SkiFree]

Getting closer, next its off to the powder coater. (Thinking red, like the old Alpina A4 injection setups.)

[SkiFree]

Pretty stoked! Got the go ahead to start playing around with velocity stacks with the intent to put them into production (of course this coincides nicely with this project). Since Weber production switched from Italy to Spain, slip-fit velocity stacks for the sidedraft DCOE40 carb have only been produced in the 1.5" length. I want something longer (either 3-4" straight, or 3" angled [to clear brake booster]).

Playing around yesterday ....


Alfa inspiration (since they too have clearance issues)....

[SkiFree]

88SuperETABD - This is my personal car, currently it sees about 60 miles a day. I do remember talking with you!

Couple little updates.

STEREO SETUP -----------------------------------------------------------------------

Radio - Finished wiring diagram for an ipod-controlled hidden stereo setup. Thanks to the guys in the audio section for edu-ma-cating me.



Tried to work with the rusty becker radio, didn't work out so good. It was just too far gone for me and my limited electronic knowledge. Instead I found a practically new-old-stock Becker Europa that was miss-labeled on ebay, got it for a steal! It was wrapped in 1972 newspaper, but USPS managed to crack the faceplate during shipping. Ordered a nice replacement from Becker Autosound.

Dismantled the radio for a good cleaning, put on the replacement faceplate. Pretty excited to get this bad boy in there.


TRANSMISSION ---------------------------------------------------------------------

As mentioned before I'm going to combine the 4-speed bellhousing (getrag 242) from the euro E21 320/6 with the guts of the us-spec. E21 320i (5-speed getrag 245). Combined this should give me a tranny that does not require me to do any cutting to the transmission tunnel.

Steve (not sure on user name) was kind enough to ship me the euro 4-speed tranny, to mate with a 245 here in the shop.

Lined up the transmissions to get a visual understanding of the differences. Note the M20 260 bellhousing and case is pretty thick, hence the reason behind the need to expand the tranny tunnel.



You can also see the bellhousing dimensional differences between the M10 and M20 tranny's

[SirSwag]

Sick build man just blew my mind!!