[concours] tires on S1 E types

I’d like to get a read from you all on what the plan is for judging
tires on pre-radial tire E types this year.

In previous years, those with radials prior to the appearance of SP40s
(in the US, this was coincident with Series 1 1/2) received deductions
for incorrect tire (the correct tire being nylon belted 640:15 H rated
Dunlops). Then, it seems we got kind of sloppy due to a Skilleter book
that proclaimed 185-15 as an available option from mid-63 on all S1 E
types. Of course, all of the US-based auto reviews acknowledge that
factory cars were still shipped to the states with 640-15s on them
through to late Series 1 and further checking with Dunlop themselves
points to the fact that SP40s may not have even been offered in the US
that early on because of the market fad for nylon belted, bias ply
tires.

Now the AGM has given the go ahead for 195:15 replacing 640-15, BUT
where is the cut off line? Is it ALL early series 1s? Additionally, what
is the general consensus for deductions pertaining to the use of 640-15s
that are not H rated? Another recent fad has individuals placing
Firestone tires on their cars because Dunlop does not currently offer a
whitewall. Ignore it?

SK
62 OTS (needing to make a tire decision sometime after I walk around
judging everyone elses tires)

Steve:
For both your tire and radiator questions, a great deal will depend on
how alert the judges are and whether they’re scratching for differences
between cars.

Tires: The rules still only allow radials on E-types manufactured after
5/63. Those allowed to legitimately use radials can use either 185HR15
or 195/75R15. The 195/75R15 got by the Protest Committee and the AGM
because the Rule Book is somewhat ambiguous and the 195/75R15 profile
matches the 640-15 profile much more closely than does the 185 radial. I
am not aware of judges making deductions for Series 1 and 2 E-types not
having speed rated tires. Perhaps some other subscribers or judges will
comment.

Radiators: (Apologies if your question is not about aluminum vs
copper/brass radiators). I recall several discussions of aluminum
originals vs replacement radiators, when aluminum ones just weren’t
available any more. I believe the conclusion then was that cars which
had proper aluminum radiators should, as feasible, be given credit for
being more authentic than cars in the same class which should have had
them but didn’t. This of course requires that the entire field be
examined before the judges decide whether there will be any deductions
for non-aluminum radiators. Now that aluminum radiators are once more
available, perhaps there will be a push to flat-out deduct for cars
which don’t have them. What do you think the rule should be?

Regards, Dick Cavicke

Dick Cavicke wrote:

Steve:
For both your tire and radiator questions, a great deal will depend on
how alert the judges are and whether they’re scratching for
differences between cars.

Radiators: (Apologies if your question is not about aluminum vs
copper/brass radiators). I recall several discussions of aluminum
originals vs replacement radiators, when aluminum ones just weren’t
available any more. I believe the conclusion then was that cars which
had proper aluminum radiators should, as feasible, be given credit for
being more authentic than cars in the same class which should have had
them but didn’t. This of course requires that the entire field be
examined before the judges decide whether there will be any deductions
for non-aluminum radiators. Now that aluminum radiators are once more
available, perhaps there will be a push to flat-out deduct for cars
which don’t have them. What do you think the rule should be?

Dick:Do you know of a supplier for (authenic)E-type 3.8 aluminium
radiators?

All the aluminium rads I have examined are cross flow, with fabricated
end tanks and are not authentic to Marston Excelsior Dwg. MZ185 8A.
Aluminium, per se, should not be the criteria, but rather authenticity.
I am attempting to document the sad warranty/ replacement issue with
Marston and Jaguar Employees. Due to the sensitivity of this and the
current lack of documentation, I believe that, non-original deductions
should not be issued for any 3.8 car carrying a Marston crossflow brass
radiator replacement (as performed by Jaguar during the warranty period)
and as substituted in production during 1963.

Bob Knowles
63 ots (Marston Rad and Dunlop RS5 6.40x15)