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Posted by: Maine914 Aug 27 2003, 09:36 PM

I have dual double-barrelled 40 mm Dellorto Carbs on a 1974 2.0 engine. It has been suggested that it too much for the engine, and that I replace should them with one double barrelled Weber. Anybody have any experience or thoughts on this suggestion?
Thanks

Posted by: seanery Aug 27 2003, 09:57 PM

Posted by: Brad Roberts Aug 27 2003, 10:02 PM

Whoa.. thats a good one. The person must want your carbs ?? Did they offer to buy them from you cheap ?? LOL

You can buy chokes and install them. Most 40's are pretty good straight out of the box. Look down inside them and see if they have 36mm chokes or 38mm. It will be stamped into a shiny aluminum piece. You'll have to pull the air cleaners off and look down inside with a flashlight or something.


B

Posted by: MarkV Aug 27 2003, 10:04 PM

Have you ever driven a 914 w/ a progressive 2 barrel?

Posted by: echocanyons Aug 27 2003, 10:36 PM

Hey wasnt the progressive weber with the 2 barrell the same carb on the pinto that was notorious for catching on fire?

Posted by: Brad Roberts Aug 27 2003, 10:39 PM

Mr. Thorsen nails it on the nose.


B

Posted by: Bleyseng Aug 27 2003, 11:52 PM

The single carb works well on anything but a flat four engine. The long steel runners condense the air fuel mix on the sides, leaning out the mix.
Duals have a short straight shot into the intake like the FI, the only way to fly.

Geoff

Posted by: ChrisReale Aug 27 2003, 11:59 PM

I have a single barrell on my Subaru. Works great. Its a flat four :finger2: :finger2:

Posted by: Dave Cawdrey Aug 28 2003, 12:05 AM

Get some Weber's like mine. 40's w/ choke and return nipple


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Posted by: Brad Roberts Aug 28 2003, 12:09 AM

The Dells have bolt on banjo fittings for the fuel. One side has a dual feed like that one pictured. You can unbolt them and place them on either carb. Or buy two fittings with single inlets and use a tee inline elsewhere.

B

Posted by: Bleyseng Aug 28 2003, 08:39 AM

Chris R, I am sure that the Subie has a nice cast aluminum manifold with hot coolent running thru it to preheat the intake charge. The standard type 4 single carb doesnt have that at all. The steel pipes will actually frost over in the winter outside of SoCal climates.
Geoff

Posted by: Maine914 Aug 28 2003, 06:20 PM

I'll hold onto them. Mine don't seem to have chokes at all. Just secondary and primary venturis.
Thanks

Posted by: Racer Aug 28 2003, 06:38 PM

Posted by: Maine914 Aug 29 2003, 06:15 PM

Actually, it was a mechanic.

Posted by: tryan Aug 29 2003, 06:18 PM

find a new 'mechanic'.

duals are a bear to tune, but the 32/36 thing is a piece of crap on a teener. fine for a pinto or toyota, but you'll never have a true teening experience with that carb.