[concours] S1 E radiators

What is the general consensus on deducts for non-authentic radiators
when it comes to the substitution of a later Marston radiators, which
are correct beyond about mid-63, for the early Marston alloy rad on S1 E
types appearing before then? Radiator C.16770 doesn’t show any change,
so one really doesn’t know when the switchover actually occurred.

SK
62 OTS

[forwarded from @Bob_Knowles1 for bknowles@idirect.com - dick white]

Steve Kemp wrote:

What is the general consensus on deducts for non-authentic radiators
when it comes to the substitution of a later Marston radiators, which
are correct beyond about mid-63, for the early Marston alloy rad on S1 E
types appearing before then? Radiator C.16770 doesn’t show any change,
so one really doesn’t know when the switchover actually occurred.

Steve et al:
This is only “hearsay”, but from some discussions I held In England with Bob
of Northampton Autorads, and a
former Marston employee whose name I have lost, the early Marston Excelsior
Ltd. aluminium radiator Dwg# MZ185 8A, was a good idea, that did not work
out, and became a warranty head$$ache for Jaguar and Marston. Due to the
“wave” welded technique and the prospect of external and huge internal
corrosion, these rads. were very prone to leakage during the warranty
period, and a brass cross-flow was substituted
in warranty service and then into production service when it became apparent
in 1962 that the aluminium radiator was not suitable for service, and
C.16770 was superseded by C.24252 sometime in 1963 MY production.
Unfortunately, the Jaguar/Marston Excelsior “discussions” are lost in the
mist (of time, not leaky rads)
and the change to production is not documented, nor is the Service Bulletin
notifying Dealers. None of the currently available literature makes
reference to this situation, and it appears to be an area for further study.

Bob Knowles
63ots