Tan fluid indicates oil in the cooling system. I would be suspect of a
blown head gasket and/or cracked head. Run a pressure guage on the
cooling system and see if you are getting super-heating from the
cylinders. (pressures greater than 13-15 psi after warmup). If you
truly have the tan glunky slime in your cooling system than you have oil
getting into your cooling system.
Chris in Trinidad
Richard F Flynn wrote:
>
> Apologies to bring up what is no doubt a tiresome subject for some (a FAQ
>would
> be helpful here - saw the start made in January - would be great to see it all
> come
> together!), but I am trying to cure my recently acquired Tiger of its hot
> temperament.
> I have surfed the list archives heavily, had some helpful advice from Mssr. S.
> Laifman, and would now like to ask the list at large for any comment on my
> proposed
> course of treatment below.
>
> thanks in advance,
>
> rick & B9471206
>
> Running Characteristics @ 70F ambient temps:
> - 170F-180F @ 60MPH-70MPH
> - 210F-220F @ 30MPH-40MPH
> - 250F+ after 15 - 20 minutes of stop/go traffic city (London UK) or
> just idling in the drive, where upon it gets finicky, stops running,
> stalls, and looses tan(!) fluid from the overflow tube only
> (the current specification of my Tiger is included at the bottom of this
> message)
>
> Proposed course of treatment:
> 1) Figure out what I have (see "Current Specification") and what
>exactly
> is happening (see "Running Characteristics")
> 2) Based on that information and that gleaned from the list folks, I
>am
> planning on:
> - establish accuracy of temperature gauge (though clearly
>there
> is a problem)
> - check radiator cap & thermostat (which is currently a
>mystery)
> - having cooling system professionally flushed (the system was
> drained & refilled 2 weeks ago, so the tan color is a bit
> disconcerting, especially knowing it has been seldom used
>for
> the past 3 years)
> - install Gano filer on radiator
> - replace 6-blade water pump fan with one of the fans
>identified
> by the list, I suspect the Volvo will prove easier to locate
> - replace unshrouded auxiliary electric fan with shrouded high
> flow fan, probably the Scott Manufacturing fan discussed on
> the list from time to time
> - close gaps & holes around radiator
> 3) Other possible modifications (no necessarily related to my problem)
> - install electronic ignition (the Pertronics seems popular)
> - possibly replace fuel pump (currently an unknown quantity)
>
> My Current Questions:
> - Any comments, suggestions, things I overlooked or missed?
> - Does anyone know of a source for the Volvo fans (does Volvo still
>make
> them - parts yards are a bit scarce in central-London)?
> - Anyone know a good radiator place in/near central London?
> - It seems to me to be clearly a low speed problem, possibly
>compounded by
> a semi-clogged cooling system. Is this a fair assesment of the
>situation
> or am I missing the mark?
>
> Current Specification
> - 1965 Tiger MKI B9471206
> w/289ci engine, transplanted at an unknown date from an unknown origin (in
> Texas apparently):
> - complete rebuild 2500 miles/3 years ago (yes, spent a fair
> amount of time not being used)
> - tested on rolling road 2 weeks ago, so timing, ignition, etc.
> are fine
> - no build up of grime/crud on engine
> - no unusual objects restricting air flow through grill, etc.
>
> - air cleaner : standard
> - carburetor : Carter
> - manifold : Offenhauser 306 Dualport
> - cam : mild, but "hotter-than-stock"
> - heads/valves : standard
> - pistons/crank/etc : standard
> - ignition/distributor : standard
> - fuel pump : standard
>
> - water pump : new, standard
> - water pump fan : 6-blade flex fan (yellow blades pop
> riveted to white star base, all fiberglass)
> - fan belt : new
> - radiator cap : 15lb
> - thermostat : unknown
> - radiator : unidentified high efficiency, unknown
>number of
> cores with 3/8" spacing & 9 ribons/inch
> - radiator hoses : new
> - radiator shroud : standard & complete
> - auxiliary fan : unshrouded 4-blade fan in front of radiator
> - hood/bonnet : standard
>
> rick
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