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Wanted: single inlet manifold B18A

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Old Feb 25th, 2011, 20:10   #1
vovo222
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Default Wanted: single inlet manifold B18A

WANTED: early Volvo B18A single-carb intake manifold. I hear these came stock on early B18 Amazons in Europe & Canada...also found on some marine engines (see photo). Email or PM if you have pictured manifold to fit a single Zenith-Stromberg CD 150 or SU HS6. Can offer a dual inlet, where needed.
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Old Feb 26th, 2011, 00:10   #2
Derek UK
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Are you fitting this to a Penta in a boat? The early B18A had a 36VN Zenith downdraught i.e. a vertical carb. The later B18A had an angled 175 Stromberg. The 1 piece manifold for this had a twin port exhaust which gave a small but useful HP increase.
What are your plans? A single carb manifold is a VERY heavy lump to send to the USA and the P&P would be eye watering. I don't think that there were any official single carb Amazons or PV's sold there but there might just be the odd privately imported one about, especially PV or Duett. Many of those will have been upgraded to twin carbs so possibly one still in the corner of a garage covered in dust/rust.
A plea on Brickboard might find you one. Chris Horn, can you help?
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Old Feb 26th, 2011, 01:20   #3
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I will have a single Stromberg car manifold, l but what you've pictured isn't a B18 car engine. The Stromberg manifold, (SU will bolt straight on) is a combined cast iron inlet/exhaust which utilises the twin down pipe.


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Old Mar 1st, 2011, 06:17   #4
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The dual carbs I have will not fit under my boat's engine cowling. The setup needed is going on a Penta boat motor to replicate the one pictured in my original post. Due to its bulky marine-only exhaust system, what I need is a single-carb separate intake...I was assuming this would be a cast aluminum item similar to the dual SU intake. The intake shown in the photo may have been marine-only feature as well: a single angled Stromberg on an aluminum intake. I have never seen one of these on an automobile, but thought perhaps in Europe...? I would prefer to use a Stromberg, if possible.

The intake/exhaust posted by 940_Turbo (often called the "combo" manifold), is seen in the US (on the 1968 B20A equipped 122/140?) and I suppose it could be cut in half, but I am not that desperate.

Was the early B18A downdraught mounted on an aluminum or an iron manifold? Either way, one of these 36VN Zenith setup would fit and could be a good substitute to use for my marine B18. Do you have one of these?
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Old Mar 1st, 2011, 13:17   #5
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This is the early Zenith set up for a car. The inlet/exhaust is combined and has a single outlet. This one has had the inlet part painted red but it's not seperate from the exhaust part. Does the original Penta manifold have any water cooling? Possibly had a Solex carb originally. I have a small Penta parts book which I think is for this engine but I can't find it at the moment. I will search.
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Old Mar 1st, 2011, 22:00   #6
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Now this early B18A manifold appears to be a "combo" as well, and is probably iron and quite heavy. The photo I'd posted is straight out of a Penta manual (I have all B16 and B18 manuals) and it lists the carb as Stromberg 150CD. It looks like I'll either have to search more with the boat people for the genuine item, or I'll be forced to find one of the Stromberg combo manifolds and do some cutting (...ruining a perfectly good dual pipe exhaust in the process!) Thanks for helping me narrow down my search, and lets pray I don't have to get out the cutting wheel.
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Old Mar 1st, 2011, 23:47   #7
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Good luck in your search. It looks as if the exhaust runs with a water cooled heat exchanger. If you see anyone locally who'd breaking a Saab 99, they use either single or dual Stromberg 150's, that's 1 1/2" rather than the Volvo 175/1 3/4". MGB use HS4/1 1/2" if you want to go to SU.
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Old Mar 2nd, 2011, 22:46   #8
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The boat yeard near me has boat with a volvo B18/20 engine that looks like it is being scrapped???

I will look and see what the carb and manfold is like and if they are selling parts.

Dai
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