1594cc Cylinder Head

[wotisname]

Hi,

I have a spare head for my 1966 Debonair but I believe it is a low compression type. I wish to have it surface ground, the valve seats replaced – so it will run on unleaded petrol – and the valve guides and stem seals replaced. I can do all this work myself but I need to know the volume of what the compression chamber in cc’s should be. Does anyone have a head that can be measured? It is a simple matter of filling the chamber with a liquid and taking note of how much is used.

Also does anyone know if it is necessary to replace the valve seats for hardened ones if I run the camper on LPG instead of unleaded petrol?

Regards, Terry

PS. I will be making a pattern soon to cut windows to replace the rear corner ones, I’ll let the board know of my progress in the cutting and heat bending to shape.

[wotisname]

Hi Again,

Further to my earlier post. If anyone has a cylinder head, within an hour or so driving distance of Liverpool or across the North towards Wakefield, that is off the engine that I can come and measure the combustion chamber volume I will be happy to come and do it. It will only take me a couple of minutes and I will bring everything needed.

Regards, Terry

[ant]

Hi Terry
Can’t help with the cylinder head (I’m a Land Rover owner!) However, I can tell you that you should definitely have hardened valve seats to run on LPG.

[wotisname]

Thank you for the reply, I have since removed my cylinder head and had the valve seats replaced. Fortunately I do some outwork (lathe machining such as replacement small-end bearings) machining for my local machine-shop and was able to work off the cost.

I did find out that the combustion chamber is machined directly in the head and it would be impossible to skim a low compression head into a high compression one, so the low compression head I bought has gone in the scrap bin.

I am now going to investigate fitting a Weber Carburettor, I think I read somewhere that a 34 ICH will fit and do a much better job than the Zeneth fitted.

Regards, Terry

[Author]

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