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I asked Tim about the very comprehensive
reconditioning capability of EJ. Payne and the oldest engine
that the company had worked on. Tim described the engine of a
1903 De Dion Bouton 'which wouldn't pull the skin off a rice
pudding'. The inlet valve seat was barely in contact, a thin
line around a seat that was 'all pitted and nasty'. "With
the valve seat replaced and the valve cleaned up we turned our
attention to the bl**dy great single piston which was running
in a bore that had upwards of 30° of taper. It was amazing
that the engine had run at all! We rebored it, fitted an aluminium
piston - ex Volvo making a stepped gudgeon pin to suit."
The sum total was a smoother running veteran engine with a new
lease of life and a satisfied customer.
This level of expertise is applied
to damaged modern engines via vintage power units and the recognised
classics... Jaguars, Aston Martins, Mercedes MG, etc., etc..
Head work includes thorough and searching cleaning techniques,
head pressure testing, valve seat refacing, reprofiling of rockers,
head planing and facing, new guides or K line bronze sleeve replacing
the existing ones.
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"We put valve seat inserts
into aluminium heads as well as cast iron heads and engine blocks
where they are side valve." F.J. Payne use a valve seat
insert "of the very hardest insert material, harder than
the devil's toenails", quotes Tim Payne. The four valve
per cylinder, inclined valves, 41/2 litre W.O. Bentleys with
their head and block in one have been receiving this F.J. Payne
treatment for a number of decades. Irrespective of our latter
day and impending leaded fuel problems F.J. Payne have used these
high quality valve seats throughout. "In essence, we've
been doing unleaded conversions for years". Naturally, every
facet of line boring is within the Payne scope of capability.
Two crankshaft grinding machines
of differing types allow the company to deal with cranks from
the smallest of rotavators up to 'meaty' cranks - heavy commercial
cranks 8 ft long. A worn out crank, costly in the case of some
of the larger or rarer engines, can be recovered by welding up
the journals on a rotary welding machine and regrinding.
more...........contact Paynes
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