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Frederik
Samba Member
Joined: August 18, 2007
Posts: 578
Location: Sweden
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 Posted: Sat Oct 28, 2017 7:37 am Post subject: ZV/JCU 4R3 on a 36hp engine |
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| Has anyone used the oyo ZV/JCU 4R3 type3 distributor on a 36hp Okrasa engine? I'm thinking this was what Vw used with dual carb and the looks of it are "correct". |
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Lingwendil
Samba Member
Joined: February 25, 2009
Posts: 3988
Location: Antioch, California, a block from the hood
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| Posted: Sat Oct 28, 2017 1:33 pm Post subject: Re: ZV/JCU 4R3 on a 36hp engine |
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It will work just fine, and they are (IMHO) a fine distributor, if not an unusual choice. If it's in good shape I wouldn't mind trying it out and seeing how it does. A more usual choice would be the 010, 019, or VJU4BR8 even. Reports say that they work very, very well on 1500-1600 stock, as well as mild performance applications.
It is an SVDA type distributor, and has a little bit more complex centrifugal weight arrangement.
Many set the timing with them by pulling a couple plug wires to get the initial settings correct, since the centrifugal advance starts around ~700RPM, although one could safely time it at max advance the way one would handle most other distributors.
http://www.oldvolkshome.com/ignition.htm#C1964S
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76939
Location: Sneaking up behind you
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| Posted: Sat Oct 28, 2017 1:35 pm Post subject: Re: ZV/JCU 4R3 on a 36hp engine |
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The 010 is the most common with a Okrasa kit.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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Frederik
Samba Member
Joined: August 18, 2007
Posts: 578
Location: Sweden
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| Posted: Sat Oct 28, 2017 2:16 pm Post subject: Re: ZV/JCU 4R3 on a 36hp engine |
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I've got vjr4br8 (~019), vjr4br25 (~010) and vjur4br8. The Zv/jcu 4r3 is in very good ocular condition (currently unrestored) and by the looks of it it can't have many working hours on it. I don't really have any use of it or the small collection of nos Bosch caps for it, but if it's not a totaly stupid idea I keep it for testning when my engine is ready.
The engine will consist of a low hour (80h) 36hp industrial engine block and a ww Okrasa kit. |
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Lingwendil
Samba Member
Joined: February 25, 2009
Posts: 3988
Location: Antioch, California, a block from the hood
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