TheSamba.com :: View topic - Weber DCNF for Vintage speed DSS class/ LSC talk K36

Mon Nov 14, 2011 5:50 pm

Burley, here is a picture of a 1961 Ferrari 250 TR 61 Spyder Fantuzzi with Weber DCNF carbs, does this make them legal for the DSS class?

http://en.wikipedia.org/wiki/File:1961_Ferrari_250_TR_61_Spyder_Fantuzzi_engine.jpg

Mon Nov 14, 2011 9:11 pm

Didn't Tom run 1 2 years ago on his turbo engine and I think he said it had a small float bowl. I could be wrong though.

Tue Nov 15, 2011 7:42 am

http://www.ebay.de/itm/Weber-44DCNF-Vergaser-Doppe...2c608441ce
not mine for sure. but nice carbs.

Tue Nov 15, 2011 5:51 pm

Ronnie
I dont think those are DCNF's, I'm not sure what they are. here a pic of the float bowl side of a DCNF and a DCN, they look a lot smaller then the ones in the V 12 pic

The DCNF is on the left, the DCN has a 3 bolt foot for the mounting flange, the DCN was the earlier carb and they were used on some Ferrari's, I think they were the V-6 in the Dino. I will try to find out which carbs those are.

Casey

Tue Nov 15, 2011 6:14 pm

Bits of Weber info here - http://www.bitsofitaly.com/weber-tuning--jettings

Tue Nov 15, 2011 6:24 pm

OK
I did a bit of searching online, I could not find much but I think they are 38mm DCN's, the must have changed the design some, I think they have internal plunger type accelerator pumps, my 40mm DCN's and DCNF have diaphragm type acc. pumps on the outside of the body.

I found this on Pierce Manifolds sight
http://www.piercemanifolds.com/category_s/239.htm

Casey

Tue Nov 15, 2011 6:50 pm

splitpile wrote: Burley, here is a picture of a 1961 Ferrari 250 TR 61 Spyder Fantuzzi with Weber DCNF carbs, does this make them legal for the DSS class?

http://en.wikipedia.org/wiki/File:1961_Ferrari_250_TR_61_Spyder_Fantuzzi_engine.jpg

Were these fitted from the factory when new? A copy of an early road test report from a magazine indicating these were stock would be sufficient. If they were, they would be legal in both the DSS and K36 categories.

Burly

Tue Nov 15, 2011 7:57 pm

If I was to hazard a guess I would bet they would cost you at least $2000.00 each if you can even find a pair, rebuild kits at Pierce are listed for $80.00 each, if they even have them.

Casey

Tue Nov 15, 2011 8:04 pm

The question was raised. Do the photos of the Ferrari show DCN's of DCNF's. Could be critical.

Burly

Tue Nov 15, 2011 10:06 pm

They are 38mm DCN's, Sorry
A set of 6 sold at Bonham auction's in 2004 for 9775 pounds [today in USD that would be $15,508] amazing what you can find on the Internet.

Casey

Tue Nov 15, 2011 10:56 pm

Worth a shot :wink: I am still looking for any published Weber DCNF or IDF pre 65 info for future 36hp DSS challenge engines.

What class does a vintage supercharger fall under?

Tue Nov 15, 2011 11:16 pm

splitpile wrote: Worth a shot :wink: I am still looking for any published Weber DCNF or IDF pre 65 info for future 36hp DSS challenge engines.

What class does a vintage supercharger fall under?

Ronnie, vintage superchargers are puffers built before 1965.

Burly

Wed Nov 16, 2011 2:06 am

36hplandspeedracer wrote: Ronnie, vintage superchargers are puffers built before 1965.

Burly

:lol: Indeed they are!

Wed Nov 16, 2011 12:20 pm

Since we are on the subject of huffers, blowers, kompressors and the like...

would a reproduction of a pre-'65 puffer (not to be confused with the term poofter) be allowed in vintage supercharged?

Wed Nov 16, 2011 12:38 pm

Tom Simon wrote: Since we are on the subject of huffers, blowers, kompressors and the like...

would a reproduction of a pre-'65 puffer (not to be confused with the term poofter) be allowed in vintage supercharged?

You mean like a reproduction of Okrasa twin port heads? I think you have your answer there Tom. :wink:

Wed Nov 16, 2011 1:05 pm

Agreed, it only makes sense. How'd the big engine turn out Tom?

Wed Nov 16, 2011 2:25 pm

John Moxon wrote:
You mean like a reproduction of Okrasa twin port heads? I think you have your answer there Tom. :wink:

no... I mean... would a reproduction MAG, Judson, Shorrock and the like puffer be allowed in vintage supercharged?

Wed Nov 16, 2011 3:36 pm

Tom Simon wrote: John Moxon wrote:
You mean like a reproduction of Okrasa twin port heads? I think you have your answer there Tom. :wink:

no... I mean... would a reproduction MAG, Judson, Shorrock and the like puffer be allowed in vintage supercharged?

What I meant Tom is how could they disallow a repro blower and allow a repro Okrasa. :wink:

Wed Nov 16, 2011 5:13 pm

Tom Simon wrote: Since we are on the subject of huffers, blowers, kompressors and the like...

would a reproduction of a pre-'65 puffer (not to be confused with the term poofter) be allowed in vintage supercharged?

Not a question at all Tom. In fact I am awaiting word that the rumored Pepco clone supercharger is available. As John said, just like the Wolfsburg West Okrasa kits, encouraging the clone components will help all of us lift up the mighty mouse 36hp back into prominence.

Anybody else out their building some repro 36hp stuff? ? ? ?

Burly

Wed Nov 16, 2011 6:08 pm

I'm want a 2-71 GMC blower but they are hard to find.

If 38mm DCN's were available in 61 how about 40 DCN's could you run those? They are a bit different but they are still a DCN.

Casey