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AZBMW Forums › Model Specific Discussion › 5-8 Series › E28 Alpina B7 Turbo - Update 05-14-13
E28 Alpina B7 Turbo - Update 05-14-13
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wkohler
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PostPosted: Fri Mar 22, 2013 11:34 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 03-22-13

I haven't had much time lately to do anything, but there is progress nonetheless.

I received my wheels back from refinishing.



When I dropped them off, I knew they wouldn't have anything to do with painting the centers black. That's fine. When I bought the tires, we made sure the wheels were straight, so all they needed was to be refinished. Since I have the original spare tire, we reused that, too.

The thing about refinishing Alpina wheels is that people rarely do the black centers properly (if they even do them). You will notice in this photo of one of my original wheels, the black extends past the recess onto the face of the wheel.



Many don't do this because it's a pain to mask. That's fine and they look just fine, but I wanted to try to do it the correct way.

I bought some expensive tape.



Run the tape along the edge of the recess.



Then, run a piece of tape next to it.



Peel off the inner tape. I forgot to take a photo of this since I was preoccupied trying to find junk mail to mask the wheel off with, but look at the next photo.

Mask off the rest of the wheel. I didn't want to paint the inside of the center bore black, either, so there's a piece of tape in there, along with tape underneath the holes to prevent getting overspray on the 745i, or the backside of the wheel.



Once I felt satisfied everything I didn't want paint on wasn't going to get it, I sprayed my first coat.



Looks pretty good. I'm going for something between a satin and semi-gloss, so one coat isn't sufficient.

Let it sit for about 15 minutes (it was about 70°, so it was ideal temps), then spray the second coat.



Then, after a while, it's okay to remove all of the masking on the face of the wheel.



Then remove from the backside.





One down, four to go. I started with the spare first. Had about 30 minutes today at the house between jobs, so I figured I'd give it a shot. The tape is pretty difficult to work with, but its pretty much the only option to accomplish what I need to accomplish.

Hopefully sometime soon I can get these wrapped up and on the car.

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7/75 E12 530i | 7/80 E12 M535i | 2/85 E28 Alpina B7 Turbo | 3/85 E28 528i | 2/87 E28 M535i | 8/94 E34 525iT
10/80 E12 M535i | 12/82 E28 533i | 4/83 E28 533i | 3/85 E23 745i | 6/85 E28 M535i | 7/86 E28 535is | 5/94 E34 525iT
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giantkeeper
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PostPosted: Sat Mar 23, 2013 6:47 am
Post subject: Re: E28 Alpina B7 Turbo - Update 03-22-13

Alliey and I were in the area Monday. I really had to fight the urge to call you and drop by. I really want to see the car...

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wkohler
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PostPosted: Tue Mar 26, 2013 12:06 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 03-26-13

Don't be afraid to call me if you're in the area.

So, I finished the wheels. I just used the fine line tape as I had on the spare. Worked fine. So, I got them mounted to the car, installed my wipers and new washer nozzles. Here's some photos.












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7/75 E12 530i | 7/80 E12 M535i | 2/85 E28 Alpina B7 Turbo | 3/85 E28 528i | 2/87 E28 M535i | 8/94 E34 525iT
10/80 E12 M535i | 12/82 E28 533i | 4/83 E28 533i | 3/85 E23 745i | 6/85 E28 M535i | 7/86 E28 535is | 5/94 E34 525iT
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tttoon
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PostPosted: Tue Mar 26, 2013 12:23 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 03-26-13

Looks absolutely amazing!

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xAZxE30x
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PostPosted: Tue Mar 26, 2013 2:39 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 03-26-13

Oh my god. Amazing!!! That front end shot... DROOL

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wkohler
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PostPosted: Sat May 11, 2013 9:46 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 05-11-13

The exhaust on the car when it came to me consisted of the Alpina downpipe running into a Y to two factory E28 M5 cats and from there into a Strömung cat-back system didn't fit the car. Ground clearance was a disaster, and it showed on the cats. Even mild speed bumps were pushing it.



The only good part of the system was the flange between the resonator and the rear muffler, since I could simply unbolt it after I cut the muffler off the car with a Sawzall. Designed for a US car, someone mounted it by dropping a bolt through one of the plugs in the trunk into the center trunk support, attaching a bracket welded to the muffler mount to the bolt with a nut, then tack-welding the nut to the bolt. From January 2012 until the car went in for paint, it was held up with a coat-hanger.



So, trying to figure out what to do was tough. The original Alpina stuff was NLA. I had thought about doing a custom 3" system from the downpipe to a single muffler in the rear, but I wanted it to look stock and I feared the car would be loud with lots of resonance and that wasn't what I was going for. The first time I drove the car without the rear muffler, I thought it was kinda cool, but it got old really quickly.

I had ordered a brand new Euro M5 rear muffler. I already had an NOS pair of the NLA chrome tips for it. I decided that a resonator wasn't necessary, going off of the B7S which had pipes to a muffler. So, what I needed was to connect the downpipe to the muffler.

I was given a couple of leads and ended up calling Precision Chassis Works out in Gilbert. I explained what I was looking to have done and that I was told he was the guy to do it. He said they do quite a bit of it and he wanted me to bring the car in so he could look at it and see what we can do.

Our plan ended up being modify the downpipe for a V-band clamp, then run a 3" section from that back to another V-band at a custom 3" to 2" collector thingy welded to the M5 muffler. What's cool about this is that the whole 3" section is easily removable by loosening two nuts and flipping a couple levers. The muffler can stay in place for driveshaft stuff - this sort of thing is important to me, almost like I'm anticipating something. Rolling Eyes Another cool thing is that due to the design of the mounting points for the resonator hangers, we could use a stronger, more modern hanger system using the existing mounting points, which would also save fabrication time.

Here is the car being dropped off.



Quickly ran over everything with Kent again and he figured he'd need the car until Friday. Fine with me. I was kinda flattered to learn that he found the car interesting enough to post about it on his Facebook page, then posted a picture of the quality welding done when the car was brought into the US. You can see it in the above photo of the old exhaust, in front of the cats. If only he had an idea of how bad the work was in the doors and bumpers - all fixed now.

As usual with me, timing was a nightmare. I stopped by Thursday and checked things out since I was in the area. I also used the opportunity to pick up the old exhaust since I want to sell the cats and the Strömung stuff, as I think someone could definitely use it. He showed me the collector he made to go into the muffler (I guess it's more of a disperser?). I was impressed.

Picked the car up last evening and while I didn't get to see it up in the air, that was okay. I'll see it eventually.

I was surprised at how quiet the car is and I'm actually happy about that. The ground clearance is a welcome change as well. It was a very pleasant drive home, so I feel it was money well spent.

I asked Kent to send me some photos for my records. He happily obliged. No photo of the downpipe off of the car unfortunately. I should have taken one myself. Everything he did is 304 stainless and every joint is fully back-purged.

















The deko-set is next! Looks like I'll be doing it myself.

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7/75 E12 530i | 7/80 E12 M535i | 2/85 E28 Alpina B7 Turbo | 3/85 E28 528i | 2/87 E28 M535i | 8/94 E34 525iT
10/80 E12 M535i | 12/82 E28 533i | 4/83 E28 533i | 3/85 E23 745i | 6/85 E28 M535i | 7/86 E28 535is | 5/94 E34 525iT
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AZautoXr
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PostPosted: Sat May 11, 2013 11:01 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 05-11-13

That's just simply GORGEOUS !!! Nice work indeed. Very Happy
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Mr.M3
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PostPosted: Sun May 12, 2013 1:06 am
Post subject: Re: E28 Alpina B7 Turbo - Update 05-11-13

Nice! Kent always does amazing work.

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Matt McIntyre

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giantkeeper
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PostPosted: Sun May 12, 2013 6:55 am
Post subject: Re: E28 Alpina B7 Turbo - Update 05-11-13

Very nice Chris, I'm glad that worked out!

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JAGER
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PostPosted: Mon May 13, 2013 9:07 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 05-11-13

That looks amazing Chris! I will definitely remember Precision Chassis Works.
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wkohler
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PostPosted: Tue May 14, 2013 11:20 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 05-14-13

Here's some photos with the deko-set installed. I guess it's done on the outside except for the tow-hook extension and the stainless wheel bolts. I have the latter.












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7/75 E12 530i | 7/80 E12 M535i | 2/85 E28 Alpina B7 Turbo | 3/85 E28 528i | 2/87 E28 M535i | 8/94 E34 525iT
10/80 E12 M535i | 12/82 E28 533i | 4/83 E28 533i | 3/85 E23 745i | 6/85 E28 M535i | 7/86 E28 535is | 5/94 E34 525iT
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rmehrIV
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PostPosted: Tue May 14, 2013 11:33 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 05-14-13

Good work on the decals! I remember when I first saw it come off the trailer and arrive at your place. Seeing it then compared to now is incredible on how nice it is. You did GREAT job on the project!
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SpikeX5
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PostPosted: Wed May 15, 2013 1:35 am
Post subject: Re: E28 Alpina B7 Turbo - Update 05-14-13

thumps up mate

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bastarde38
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PostPosted: Wed May 15, 2013 6:28 am
Post subject: Re: E28 Alpina B7 Turbo - Update 05-14-13

*slow clap*

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PostPosted: Wed May 15, 2013 3:35 pm
Post subject: Re: E28 Alpina B7 Turbo - Update 05-14-13

I know how you love .gif's


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