Hi Guys

Question about Weber downdraught carbs.
My 1800 Pinto has the PIERBURG carb
I want to change it to Weber.
Looking on the Bay there are manifolds for 1600/2000. but nothing showing for an 1800.
Are they all the same?
2nd question. Which carb should i be looking for.
seen a WEBER 32/34 DMTL
But it's just numbers to me
Any help would be appreciated

David

IIRC from my lesson (just the other day ) i think the number is the diameter of the hole.

Weber numbers are the size of the bore where it mounts to the manifold ie; 28/36, 28 is the bore of the primary and 36 is the bore of the secondary. The carb normally runs on the primary, at 3/4 throttle the secondary opens giving more performance. So yours has a 32mm primary bore and a 34mm seconday bore.

1800 engine was just a variation on the 1600
2 litre had some diffrences that aren't obvious.

I don't the Pierburg (formerly called Solex) bolt pattern on the manifold on your engine but on Vauxhalls and ancient Rootes engines Weber carbs bolted straight on the original Pierburg/Solex manifold.

[Edited on 22/1/09 by britishtrident]

You can use the 1600/2000 manifold and a 32/36 DGAV or DGV carb which was standard on pinto engines.
I have attached some info to help

Jet sizes

Thanks for the help guys.
Just missed a brand new
WEBER 32/34 DMTL on the Bay
Went for £62

At least I know what to look for now
Well I think so anyway

David