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> WTB: Authentic IDF 40 Manifolds
post Mar 18 2020, 08:55 AM
Post #1

I'm new here ...

Group: Members
Posts: 0
Joined: 27-May 18
From: Boulder, Co
Member No.: 22,161
Region Association: Rocky Mountains

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Hello all! Happy to have this supportive community to help me out with this, as I have been striking out.

I have a '73 914 that I am building. She's a 2.0 liter car with SC flares, 5 Lug Fuchs in Ravenna Green. Her new 2100cc motor is going in this week, and we have a fresh pair of 40IDF carbs to go on it....but no manifolds.

EVERY place I speak to has manifolds that will bolt up (3 bolt pattern), but they are all the cheap EMPI model, measuring 44mm below the carb.

Aircooled.net, Pierce Manifolds, eBay...they are all like this (IMG:style_emoticons/default/WTF.gif) . My understanding is that these larger bored manifolds paired with the 40mm carb output causes air turbulation under the carb which I do not want.

I was running 44's on my last build, 2056...bogged down like crazy below 3k even jetted down..they're just too big.

Soooo....any suggestions on where I might find a set of OLD stock Weber manifolds for 40's?????? Aircooled.net said the only way to make it happen is to sleeve them and seal it with JB Weld....I don't buy it, nor would I do that.....
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