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Old 10-14-2021, 02:38 PM   #1
TravisZ28
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Default Intake manifold compatibility

Does anyone know if an intake manifold manufactured for a B18/B20 engine would fit a b 23 cylinder head. I'm looking for a budget way to convert to a carb on my b 23 and have found several inexpensive intake manifolds on eBay but they all say that they're designed for a p 18 / B20 engine.
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Old 10-14-2021, 02:44 PM   #2
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https://en.m.wikipedia.org/wiki/Volvo_B18_engine

https://en.m.wikipedia.org/wiki/Volvo_Redblock_Engine

https://www.google.com/search?q=look...HvKtIPb38BK0NM
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Old 10-14-2021, 02:47 PM   #3
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Get a dcoe manifold from china (aliexpress) and some knock off dcoe 45s (FAJS). That's one of the cheapest ways to do it, and it's still going to be $700-850.
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Old 10-14-2021, 02:56 PM   #4
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Yeah, not at all close (EDIT: referring to OHV manifolds on OHC motors). They did come with carbs in other markets, including Canada. Might be something available for cheap from there? Also - Penta OHC motors used carbs.
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Old 10-14-2021, 03:01 PM   #5
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https://www.ebay.com/itm/Inlet-manif...-127632-2357-0
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Old 10-14-2021, 03:12 PM   #6
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Boat manifolds - but I'm not sure what sort of downdraft carbs would fit on them: https://www.ebay.com/itm/12441631347...YAAOSwvZ5fnGMZ
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Old 10-14-2021, 06:27 PM   #7
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Here's a AliExpress kit, labelled for a b21/200 which will work on a b23/230 as well.

https://www.aliexpress.com/item/4001...93438029%22%7D
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Old 10-14-2021, 06:44 PM   #8
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Why?
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Old 10-15-2021, 05:24 PM   #9
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Thank you all for the help. I am gonna investigate either making a marine manifold work or getting the pierce manifold.
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Old 10-18-2021, 04:08 PM   #10
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I have a penta intake and carb sitting next to me at the shop right now. It came off a 93 b230 also known as a aq151 penta. you can PM me and we can figure something out for purchase if you want.
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Old 10-18-2021, 04:46 PM   #11
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I've seen people mount a carb to a B21FT manifold. they should still be in junkyards.
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Old 10-20-2021, 09:09 AM   #12
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B200K and B230K manifolds are around $50 in Europe.
You can put Weber DGV on those.
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