pg65
Newbie
Posts: 11
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Post by pg65 on May 2, 2024 19:47:02 GMT 1
Hi all,my MK3 Zodiac has a Weber 28/36 carb, this was an historic modification by Neil Davis, I'm having some running issues which I've narrowed down to the carb, my question is does does anyone know what jet sizes were used as I don't know if the carb has been tampered with so would like to get a baseline to start with, thanks Paul.
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Post by michael on May 3, 2024 18:12:42 GMT 1
No idea what happened to my previous post - a lurgy in an OS somewhere. I seriously wish I had not upgraded my PC to Windoz 11 and my phone to Android 14 as both are flakey to say the least.
Back to your question. I messed around with Weber 28/36 carbs on many cars, mainly Fords, in the late 70s and early 80s. My conclusion was that whilst you could achieve a good set up for the mid-range Fords (1300cc - 2000cc) including the Consul and Zephyr 4 they were inadequate for the 2.5 litre six cylinder models. In my opinion twin or triple SU's are the way to go. I have heard of someone using a Weber off a 3l Granada or Consul GT but that was decades ago
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pg65
Newbie
Posts: 11
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Post by pg65 on May 4, 2024 15:44:07 GMT 1
Ha ha I did wonder, thanks for your input Michael interesting your mention of twin carbs got me thinking, triple carbs would be too much but twins would be great, do you know what size type of SU, i do have a pair of Strombergs of a Triumph 2000 guess I'll have to do the research, thanks again
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Post by michael on May 18, 2024 7:49:26 GMT 1
I went back through some of the stuff I have on tuning. When you get away from s/H (and TBH some stuff on eBay is beyond saving) I can only find one supplier of new multi-carb manifolds. This is Cheshan Engineering. However, it is probably OTT for road use being a for triple side draft Webers! They also produce replica Raymond Mays heads. These are eye wateringly expensive and probably, I think, only with it with a blueprinted engine, better camshaft and six-branch (brunch of bananas) exhaust manifold. This company in Australia do triple SU manifolds: www.lynxauto.com.au/ford-zephyr-mk-ii-iii-3-x-su-1-3-4-manifold.htmlAustralia is probably a good hunting ground for parts if you have a contract there. There was a guy in NZ but he seems to go off the radar a few years before COVID. The problem is the average age of Mk III enthusiasts goes ever upwards. But then I was in my twenties when I joined the club in 1980 (you do the arithmetic as it makes me feel old). Good luck whatever you decide to do. The main thing is to enjoy the car before big brother stops our fun! đ I was going to add a photo but it will not let me! âšī¸
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Post by michael on May 18, 2024 10:03:53 GMT 1
Here's the photo!
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Post by Joe on May 18, 2024 13:43:03 GMT 1
I went back through some of the stuff I have on tuning. When you get away from s/H (and TBH some stuff on eBay is beyond saving) I can only find one supplier of new multi-carb manifolds. This is Cheshan Engineering. However, it is probably OTT for road use being a for triple side draft Webers! They also produce replica Raymond Mays heads. These are eye wateringly expensive and probably, I think, only with it with a blueprinted engine, better camshaft and six-branch (brunch of bananas) exhaust manifold. This company in Australia do triple SU manifolds: www.lynxauto.com.au/ford-zephyr-mk-ii-iii-3-x-su-1-3-4-manifold.htmlAustralia is probably a good hunting ground for parts if you have a contract there. There was a guy in NZ but he seems to go off the radar a few years before COVID. The problem is the average age of Mk III enthusiasts goes ever upwards. But then I was in my twenties when I joined the club in 1980 (you do the arithmetic as it makes me feel old). Good luck whatever you decide to do. The main thing is to enjoy the car before big brother stops our fun! đ I was going to add a photo but it will not let me! âšī¸ Most triple SU sets are fine for road use and give better MPG than the standard Zenith carb (just about anything will) Another option is to go down the electronic fuel injection route as this will give much better performance and economy (see Classic injection on the Internet) But this is very expensive
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