I dont have the manual, thats why i'm guessing !
Didnt mean the overflow pipe but the section between the return manifold
(where all the outputs from cyl heads come together) and the expansion tank
(where the pressure cap is fitted). On mine it is a section of pipe about 4
inches long, but I believe mine is a one off. Our engine is the original
engine fitted to G-YURO (must be about 12 years old).
There is almost certainly be a pressure differential between these two
points because they are short circuiting the radiators. It might be
necessary to clamp the upstream radiator hose initially to purge any air
---From the carb heater system.
No doubt i'm reinventing the wheel.
As you say, read the instructions. (but I dont have a copy?)
----- Original Message -----
From: "Richard Holder" <rholder@avnet.co.uk>
Subject: Re: Europa-List: Carb Icing
>
>
>> <carl@flyers.freeserve.co.uk>
>>
>> Thanks for your input William, sounds encouraging.
>>
>> Just looking at my engine manuals, I dont understand why the return pipe
>> has
>> to be attached so close to the water pump inlet. It would seem that
>> anywhere
>> in the return line would have the same result. Cutting the pipe where it
>> runs along the top of the engine would be much easier and would be far
>> less
>> messy.
>>
>> Anyone know of a good reason why this wont work.
>>
>> Presumably the other end of the circuit is connected somewhere between
>> the
>> expansion tank and the radiator inlet connection. Or is it between the
>> top
>> return manifold and the expansion tank (probably higher water pressure at
>> this point).
>
> The top takeoff point is between the top collector where the pressure cap
> sits, and the #2 cylinder head (left front cylinder).
>
> A t piece goes in there and a pipe goes to the left hand heater. Then from
> the left hand heater to the right hand heater, and then from the right
> hand
> heater to a t-piece put into the pipe from the bottom of the engine that
> goes to the radiator.
>
> I think you need a "head" of water in the heating circuit otherwise you
> may
> end up with an airlock.
>
> NOT in the expansion pipe between the top collector and the overflow
> bottle.
> That would be crazy !
>
> Best to RTFM ! (read the flipping manual !) AND follow them !
>
> Richard
> Richard F.W. Holder 01279 842804 (POTS)
> Bell House, Bell Lane, 01279 842942 (fax)
> Widford, Ware, Herts, 07860 367423 (mobile)
> SG12 8SH email : richard.holder@avnet.co.uk
> ++++++++ Please note new email address ++++++++
> Europa Classic Tri-gear : G-OWWW, High Cross
> PA-28-181 : Piper Archer : G-JANA, EGSG (Stapleford)
>
>
>
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