My Alpina B2 powered 3.0CS

IMSA-CSL said:
I have one of these 250 HP ALPINA engines in my car. Engine is original matching number. Terrible starter, but very nice to drive above 2,000 rpm.
Click to expand...
Is your aluminum Alpina air box still original finish? I made the mistake of refinishing mine many years ago and went with a spray on Krinkle paint after taking it down to bare aluminum. I would like to redo this. Wish I had just touched up the blemishes on mine rather than try too make it new.
 
Last edited:
Nicad said:
Is your aluminum Alpina airbag still original finish? I made the mistake of refinishing mine many years ago and went with a spray on Krinkle paint after taking it down to bare aluminum. I would like to redo this. Wish I had just touched up the blemishes on mine rather than try too make it new.
Click to expand...

@mark99 recently refinished his repro box. He didn’t like the original finish on his.

On a somewhat related note, there is a B2 motor for 12,000 € on ebay. Too pricey for me, but it is just another example of a red Alpina motor. There are too many of these for it to be a coincidence.

A2C6D86B-0AB5-4995-8CFE-8E1C4C156D90.jpeg
D41C085F-1E25-42DC-8C15-0ECEAC87E00D.jpeg
4E99628C-188E-4402-9DD4-382B3A489BC7.jpeg
 
I have an allegedly original Alpina triple Weber setup sans linkage (from Mario), and the plenum and air filter box are black. Maybe red was reserved for B2’s and the aftermarket got boring black ?

John
 
I much prefer Black. Mine was original finish when I purchased it. John, is the Purolator script bare metal or painted on yours?
 
Markos said:
@mark99 recently refinished his repro box. He didn’t like the original finish on his.

On a somewhat related note, there is a B2 motor for 12,000 € on ebay. Too pricey for me, but it is just another example of a red Alpina motor. There are too many of these for it to be a coincidence.

View attachment 119902View attachment 119903View attachment 119904
Click to expand...


Wow, that’s really interesting. It’s again a slightly pinkish hue of red...

It’s possible it was just a trend at the time though.
 
Nicad said:
I much prefer Black. Mine was original finish when I purchased it. John, is the Purolator script bare metal or painted on yours?
Click to expand...
The Purolator script is bare aluminum in my airbox. Do you think that’s original?
 
bfeng said:
The Purolator script is bare aluminum in my airbox. Do you think that’s original?
Click to expand...
This grainy shot is how mine looked when I bought it. (Cell phone shot taken off my old photo bucket account)
 

Attachments

  • tempImagexpNlSX.png
    tempImagexpNlSX.png
    2.6 MB · Views: 187
Nicad said:
This grainy shot is how mine looked when I bought it. (Cell phone shot taken off my old photo bucket account)
Click to expand...
Is that an original B2 conversion? I see the bracket for the csi airbox is bolted on, presumably a carb car originally. I wonder if thats how Alpina mounted the brackets or if they welded them on?
 
JamesE30 said:
Is that an original B2 conversion? I see the bracket for the csi airbox is bolted on, presumably a carb car originally. I wonder if thats how Alpina mounted the brackets or if they welded them on?
Click to expand...
It was originally a 71' Belgian 2800 CS. My hunch is that Kormann put this together as the engine block is Blue.
 
JamesE30 said:
Is that an original B2 conversion? I see the bracket for the csi airbox is bolted on, presumably a carb car originally. I wonder if thats how Alpina mounted the brackets or if they welded them on?
Click to expand...

Photo evidence suggests that they bolted them on.
 
Markos said:
Good point, and more importantly I finally made sense of the french article below. The B2S is indeed documented as 250hp, by way of the 83hp per liter calc. Why they didn’t state overall HP anywhere in the article - I don’t know. I was translating as 83 per cylinder which had me totally confused.

HP Reference on the bottom of page 2. @JamesE30 I hope you don’t find this too noisy.

View attachment 116957View attachment 116958the
Click to expand...
My understanding export B2’s had Webber’s? Could this account for any extra HP over the Solex?
 
I spoke to the former head of ALPINA test bench earlier this year regarding the Weber carburetors on my original ALPINA B3 engine.

According to him, the Solex is the better carburetor, which allows better combustion of the gasoline fuel ratio.

A better and cleaner combustion also indicates more power.

The Weber have just prevailed because the spare parts supply is better.

I would not change my Weber carburetors because they run very well. Never change a winning team.

Best regards
Andreas
 
Stevehose said:
I think Webers were used for emissions reasons, not HP.
Click to expand...

I believed that they used both, and not necessarily tied to B2 vs B2S. I know of at least one B2S with solex carbs. My assumption was that B2S got Solex but I read otherwise (on the forum).
 
You must log in or register to reply here.
Back
Top