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Engines / 1934 JP2 Valve Rocker Shaft
« on: April 03, 2009, 05:07:10 PM »
I've only just discovered this site so this is my first posting.
For our sins we have a '34 JP2 in a boat on the River Soar in the UK.
It has just disgraced itself by blowing a head gasket after 15 years of quite hard usage so no complaints there,but while I'd gotten it stripped down I discovered the rocker shafts were very worn.
The JP2/CS18/2 from the pre war period,unlike the later JK/JS,did not have a positive oil feed to the rockers.
The problem is that this item is no longer available.
So the question is,Does anyone know what the composition/heat treatment is for a Lister rocker shaft so that I can get a couple made up.
The other alternative might be to utilise a CS shaft and re-bush the rockers,Does anyone happen to know the diameter and length of one of these as I don't happen to have one about at the moment.
John Price,nb Aboukir
For our sins we have a '34 JP2 in a boat on the River Soar in the UK.
It has just disgraced itself by blowing a head gasket after 15 years of quite hard usage so no complaints there,but while I'd gotten it stripped down I discovered the rocker shafts were very worn.
The JP2/CS18/2 from the pre war period,unlike the later JK/JS,did not have a positive oil feed to the rockers.
The problem is that this item is no longer available.
So the question is,Does anyone know what the composition/heat treatment is for a Lister rocker shaft so that I can get a couple made up.
The other alternative might be to utilise a CS shaft and re-bush the rockers,Does anyone happen to know the diameter and length of one of these as I don't happen to have one about at the moment.
John Price,nb Aboukir