Open valve rocker box 34-37 needed
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mark.prizeman
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Open valve rocker box 34-37 needed
Does anyone have a spare open valve rocker box? In particular the lower casting A5-405 as I appear to have an earlier incarnation of the casting that is machined to take un-flared pushrod tubes; i.e they would just go straight up into the casting, without the flare, rather than sleeving over the suitably cut bosses.
'25 Sunbeam 5 sports, '37 VH, '50 Magnat Debon M4, '53 AJS 20
- paul.jameson
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Re: Open valve rocker box 34-37 needed
You may well find it easier to obtain some pushrod tubes without the splayed ends instead, or to have some made. I used the early arrangement on my 350 engine for a while but changed to the later type to reduce grease leaks if I remember correctly.
Paul Jameson
34 OHC 4F 600 (project), 35 LG (project), 37 RH500, 52 ex ISDT KHA, 54 KH(A), 75 Healey 1000/4.
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist (but not Machine Registrar), Gauges and Clocks Spares Organiser.
34 OHC 4F 600 (project), 35 LG (project), 37 RH500, 52 ex ISDT KHA, 54 KH(A), 75 Healey 1000/4.
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist (but not Machine Registrar), Gauges and Clocks Spares Organiser.
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ian.scott
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Re: Open valve rocker box 34-37 needed
Hi
I have a spare lower casting , however it does not have a casting number and the pushrod tube fittings have a flange to fit inside the pushrod tubes.
Let me know if it is any use, butthe casting is bare , no rocker shafts etc but it does have locating screws for the rocker covers.
Ian
I have a spare lower casting , however it does not have a casting number and the pushrod tube fittings have a flange to fit inside the pushrod tubes.
Let me know if it is any use, butthe casting is bare , no rocker shafts etc but it does have locating screws for the rocker covers.
Ian
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mark.prizeman
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Re: Open valve rocker box 34-37 needed
Thank you Ian,
Presumably like this casting; actually a 350, but same joint to tubes?
Mark
![Image]()
Presumably like this casting; actually a 350, but same joint to tubes?
Mark
'25 Sunbeam 5 sports, '37 VH, '50 Magnat Debon M4, '53 AJS 20
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mark.prizeman
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Re: Open valve rocker box 34-37 needed

'25 Sunbeam 5 sports, '37 VH, '50 Magnat Debon M4, '53 AJS 20
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mark.prizeman
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Re: Open valve rocker box 34-37 needed
Sorry here is missed image!download/file.php?id=30332&mode=view
'25 Sunbeam 5 sports, '37 VH, '50 Magnat Debon M4, '53 AJS 20
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ian.scott
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Re: Open valve rocker box 34-37 needed
Hi Markus
Yes, just like that,
Yes, just like that,
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mark.prizeman
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Re: Open valve rocker box 34-37 needed
Perfect!
'25 Sunbeam 5 sports, '37 VH, '50 Magnat Debon M4, '53 AJS 20
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mark.prizeman
- Posts: 63
- Joined: Wed Aug 05, 2015 6:59 pm
- Location: Needham Market, Suffolk
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Re: Open valve rocker box 34-37 needed
I have sent a PM for further actions...
'25 Sunbeam 5 sports, '37 VH, '50 Magnat Debon M4, '53 AJS 20
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