Yeah it was just my idea for the top gasket to help keep the temp down as the inlet chamber is massive, and leaving the copper gasket to stick into the chamber will not restrict it in any way, the gasket is very thin in the width dept at that point, that is where the segment blow out towards the inlet side, it just means that it gives the gasket a little more lateral strength and is easier to cut and the copper will be in the cool inlet air and that would transmit that coolness through the gasket into the body and the head block interphase.What would be the reason for extra gasket on the inlet? Cooling? As surely it would restrict air flow?
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Where does it say about the ally head? ......
PS Machine mart only exchanged one of the pumps and said the third one would have to be sent back to the manufacturer for engineers report would be 3 weeks so the guy couldnt wait for that length of time (mot ramp etc) bought another which did the same thats when I stepped in having repaired them before. It was sorted in a few hrs honed the cyl freed the rings etc.
I just nipped out and checked it with a magnet.
no it wont the gasket blows between the inlet and the pressure side the bridge is only about 5mm wide so making the gasket 10mm wide into the inlet chamber makes it stronger less likely to distort and blow out, because it is physically larger , also is in the cooler inlet air which due to conduction has to make that section cooler.But the heat from the head/block will be transferred back into the top of the cylinder via the gasket, so I don't see what you gain.
Making the gasket oversize so it sticks out of the perimeter of the head may help.
All I can comment on is the fact it went though 4 pumps in short order, and now has ran for 18 mths and is pumping for most of the day and has not given one problem I did actually suggest an extra fan but I bought a big broom wade pump to replace it, he said oh just let it run for now and it hasnt stopped sinceTo be honest if you want more cooling rig up an extra fan (I used an 8" one), but make sure the airflow doesn't conflict with the airflow from the fan incorporated in the pump pulley/flywheel.
no it wont the gasket blows between the inlet and the pressure side the bridge is only about 5mm wide so making the gasket 10mm wide into the inlet chamber makes it stronger less likely to distort and blow out, because it is physically larger , also is in the cooler inlet air which due to conduction has to make that section cooler.