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Post by kiwisteve on Dec 4, 2019 20:10:02 GMT
has anyone fitted a weslake type head onto an early 3 litre engine ? does anyone know if the bottem end specs ie cam profiles and compression ratio`s are the same ? any advice would be great !
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Post by johnwp5bcoupe on Dec 5, 2019 9:07:32 GMT
Welcome to the forum Steve  I cant help you with your question there are some knowledgeable 3lt guys on here and I am sure you will get the help you need! I am a 3.5 guy but I did own a 3lt many years ago for a very short time  |
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Post by Phil Nottingham on Dec 5, 2019 22:29:02 GMT
The Mk1 3 Litre was improved upon gradually through to the Mk3. The camfollowers, pushrods and crankshaft journals were upgraded (larger) from the Mk2c just after the Westlake head was fitted. The waterpump top outlet is different on the Westlake head and although I have not tried it the Westlake head will fit on early ones but the head oil drain is different. Mk1 and Mk2 autos crankshaft and camshaft are different to the manuals too.
CRs were either 7.5:1 or 8.75:1
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Post by djm16 on Dec 6, 2019 5:15:56 GMT
If it helps, I recently owned a P4 95 that a PO had changed to a Weslake head.
I now have a 1963 3 litre Mk IIb. It is prior to the crankshaft modification of the Mk IIc and MkIII (crank dia at rear main seal is larger in the Mk IIc and MkIII.
The point is, it has a Weslake head from new.
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