As of this morning I have extended the standard UK spec heat shield to
give better protection. I also added a plate in front of the radiator to
stop airflow from the grill going under the radiator ( was not related
to the heat soak problem - just got around to doing it).
The insulating spacers I don't have. Not shown or listed in the Rimmer
catalogue. I know that there was one on my Stromberg.
Anybody know of a US source for such a spacer for SU HS4's?
Alan
Donald H Locker wrote:
>Sure sounds like carb bowl heating up. Radiant heat from the exhaust
>system is not being dissipated by any flowing air, so the carb bowl
>heats up, boiling the fuel and pushing it out of the jet. See the
>recent threads on heat shields for preventive measures.
>
>One other possibility is a missing insulating spacer. There should be
>a phenolic spacer between the carb and intake manifold, IIRC.
>
>Donald.
>
>
>
>>Date: Sun, 25 May 2003 17:25:06 -0600
>>From: Alan Lemen <ralemen@cableone.net>
>>
>>I am having problems with my front SU HS4 carb. Rear one is OK.
>>
>>It only seems to happen when I stop the engine. Plugs are perfect
>>colour, carbs are in sync.
>>I did check and even replace the float valve and the fuel level in the
>>float bowl is fine ( identical to the rear one), even disconnected the
>>overflow pipe while it was running and it did not overflow. So stopped
>>engine ( was double checking the sync so it was running for a short
>>while at temp) and after a minute or so the fuel comes out the jet -
>>easy to see with the filers off. Since top of jet is higher than the
>>float bowl level surely it's pressure but where from and why only the
>>front. Nothing appears blocked.
>>
>>Ideas anyone?
>>
>>Alan
>>
>>ps. No excessive fuel consumption as I just got 33 mpg on fill up.
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