[GTJIM (R.I.P.)]

Dual Carburetors

A quite different carby set up has showed up on EBAY- DE
in Germany: #2450367182 Opel Record Sprint Weber DFO
Doppelvergasser:

 

[nobody]

Wow, very interesting but how would you close the hood? I would like to see pics of this on something... on second thought maybe I wouldn't.

If they are cheap maybe you could fix that.

 

[oldopelguy]

pigs

Those carbs are a real pig to get anything for, the "O" in DFO is for Opel and so nothing else used them.

I have the intake manifold for sale, though, if anyone wants to try to adapt a pair of DCNF or similar carbs to it.

 

[72opelguy]

what does the carb flage look like an adapter plate can always be made. they would look good with a pair of 32/36 on them and some nitrous plumbed into it

 

[oldopelguy]

nope

The bolt pattern and flange are the same as the 32/36's, but the butterflies operate on the same shaft to give each cylinder it's own venturi, just like the side-drafts. If you put a progressive carb on there, cylinders 1 and 3 would get fuel and air all the time, and 2 and 4 only when the secondaries kicked-in. Not a good set-up. A pair of DGES carbs might work, but the power valve wouldn't work right and tuning it would be a real pain.

I think it would be interesting to build a plenum between manifold and the carbs, then mount 2 32/36's on turned so they 90 degrees from the stock single carb set-up. Then the 2 primaries could be synced, and the secondaries synced, and the whole works would work like a big Opel tunnel-ram. depending on the plenum size it should be pretty forgiving for tuning not being "perfect" and the syncronizing could probably just be "by ear." I'll probably slap something together for laughs with a pair of Solex carbs when I get my new motor put together, just to see if it works.

 

[GTJIM (R.I.P.)]

Sprint Manifold

It has just occured to me that this is probably the setup that gave the "Sprint" exhaust manifold its name originally as it would need an exhaust manifold without the heat stove.

So it uses a seperate choke for each cylinder!

 

[72opelguy]

i think the whole opwl tunnel ram thing would be sweet what are you selling them for
i think i am interested
and i have no worries about the exhause i have a header

 

[oldopelguy]

Re: Sprint Manifold

It has just occured to me that this is probably the setup that gave the "Sprint" exhaust manifold its name originally as it would need an exhaust manifold without the heat stove.

So it uses a seperate choke for each cylinder!

This induction was designed for the Opel racing team by the engineers at Opel When they went to EFI a few years later, rather than re-invent the wheel (or exhaust manifold, in this case) they simply used the manifold they already had laying around. Just one example of how factory sponsored racing benifits the company.

As to selling mine, I only have the manifold, braces, and some of the linkage, no carbs. I paid something like $125+ shipping from Europe back in the pre-e-vil-bay dark ages, but I'm trying to get $75+ shipping for it now. The one above went for over 200 euro! Crazy!

 

[72opelguy]

cool
im interseted but kindof in the middle of another project but if you check the wieght on it i sure i can get the dough

 

[davegt27]

hey if Josh backs out put me down for them

david Ligon
[email protected]

 

[72opelguy]

you know theres a way to use the 32/36 or the 38/38 with that mainfold
you couls port them band siameze the runners to pull equally

 

[oldopelguy]

oops

Sorry about this guys, but I was casually reminded this evening by another friend reading this threasd that the manifold was already promised to him quite a while ago. Sometimes I think Oldopelguy should be Old-forgetful-opel-guy. There is another set-up on e-bay Germany right now that looks a lot better than the one above.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2452271228&category=42487&rd=1

Again, sorry guys.

 

[davegt27]

that's OK i understand

i told a friend $35 for the 2.0 sprint manifold i have

The same day of the post about the high dollar sprint manifold on Ebay.


davegt27

 

[tekenaar]

Re: pigs

Those carbs are a real pig to get anything for, the "O" in DFO is for Opel and so nothing else used them.

I have the intake manifold for sale, though, if anyone wants to try to adapt a pair of DCNF or similar carbs to it.

IMS, DCNF carbs have slightly larger footprint than our typical 38DGAS or 40DFA replacement carbs, BTW the ONLY ones usable with this manifold without modifications to it, for reason already mentioned (progressive vs. synchronous throttles).

 

[davegt27]

http://www.redlineweber.com/html/throttle_bodies/Throttle bodies_DCNF.htm


davegt27

 

[GTJIM (R.I.P.)]

Injection Conversion

A couple of those DCNF injection units would just about fit under a GT hood on that manifold.........

 

[oldopelguy]

adapter

The DCNF bolt spacing is a bit different than the DFO's but the bore spacing is pretty close. That means you will need an adapter of some sorts, but it should be pretty easy. DCNF's have a huge racing heritage as well, considering they are the weapon of choice for almost everything Itilian that goes fast.

Those throttle bodies sure are yummy. What a cool induction system that would make.

 

[tekenaar]

Re: adapter . . . DCNF Ferraris

The DCNF bolt spacing is a bit different than the DFO's but the bore spacing is pretty close. That means you will need an adapter of some sorts, but it should be pretty easy. DCNF's have a huge racing heritage as well, considering they are the weapon of choice for almost everything Italian that goes fast.

Those throttle bodies sure are yummy. What a cool induction system that would make.

Brings to mind some deliciously beautiful Ferrari front engined V-12 GTO sport coupes and roadsters of the '50s and '60s. Just imagine the look of SIX DCNFs in a row snuggled neatly in the valley between the heads of a narrow angle Ferrari V-12! AWESOME!

 

[GTJIM (R.I.P.)]

DCNF GT V6

What about THREE in a row on a 2.8/3.4 GM 60 degree V6 under an Opel GT hood!

 

[davegt27]

No one said anything about that little Air Horn thing on top of the TB.

i think they make those for the DGAS and 32/36


davegt27