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Weber intake manifold

bugedd

Jedi Knight
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A fellow I know is getting ride of a DCOE45 that was on his 948 (at bit much?) and I was thinking about tinkering around with it on my 1275. A fellow told him is was the wrong manifold for the 948, so the questions is, is this pictured manifold correct for a 1275?
weber.jpg
 

twas_brillig

Jedi Knight
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The gooseneck manifold looks pretty much the same as the ones I've got bolted to a 948 and also to a 1275. Mounting studs appear to be identical although I haven't bothered measuring the diameter of the intake ports on the head vs the outlet of the manifolds I own, nor compared the DCOE outlet diameters to the manifold inlets. The 45 seems to be the standard for the 1275 (I'm going to try a 40, as I own one, on a 1275); disassemble it and record the various jets/chokes/etc etc and compare to the standard recommendations. Doug
 

twas_brillig

Jedi Knight
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The manifold we have on the 1275 engine is probably a Warneford; the inlet runners measure out at 43.5 mm ID; the 40 DCOE I've got measures at 39.5 mm (these are a bit approximate, as my 'vernier' is cheap plastic. DOug
 
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bugedd

bugedd

Jedi Knight
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The owner of it got back to me, has a number stamped on it which corresponds to Redline's part number for a 1275 manifold for DCOE45. I may pick it up, play around with it. Where does one typically source the vacuum for the distributor advance?
 

twas_brillig

Jedi Knight
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If you don't want it.....
Our old 948 cc Cannon manifold (the car isn't here at the moment) does not have a vacuum connection, and we've driven it that way for (off and on) years. The Warneford manifold one the 1275 project has a roughly 3/8" tap on each intake runner (one with a bolt blocking it off; one sans bolt; I haven't checked the bolt size) that could presumably be used for a vacuum connection to the distributor, with various adapters etc.
Apologies, but I can't provide any wisdom. I've got David Vizard's book on tuning the A series and will follow whatever he says regards connecting the distributor to the manifold. Otherwise, would have to follow up on trying to find someone who could change the weights on the distributor to convert it to purely mechanical advance. Or convert the whole shooting match to Megasquirt EFI and pure digital ignition.....
 
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