Blown head gasket
#1
Hi all. I have a 1946 Vauxhall 10-4. Number plate FDU 400. The engine stopped turning over and I left it in storage for a year. When I went back water was everywhere. I removed the head and water was in all 4 cylinders. I have a replacement gasket but I can’t  get them cylinders free. I’ve soaked it with penetrating oil, rocked it back and forth in gear and still nothing. Am I missing something? I simply  took the head off, I left the  carburettor , manifold and rocker arm on the the head and the push rods in their position in the block. Is there anything else I’m not considering?

Thanks in advance
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#2
(01/09/2019, 05:45 PM)Mark.mcglynn Wrote: Hi all. I have a 1946 Vauxhall 10-4. Number plate FDU 400. The engine stopped turning over and I left it in storage for a year. When I went back water was everywhere. I removed the head and water was in all 4 cylinders. I have a replacement gasket but I can’t  get them cylinders free. I’ve soaked it with penetrating oil, rocked it back and forth in gear and still nothing. Am I missing something? I simply  took the head off, I left the  carburettor , manifold and rocker arm on the the head and the push rods in their position in the block. Is there anything else I’m not considering?

Thanks in advance

Sounds to me you will need to take the engine out and dismantle it. Piston rings are probably rusted to the bores and as all four are seized it will be very difficult to get them moving
With the crank shaft out you will be able to force the pistons out individually.
Regards
CB
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#3
I gave each piston a good thump with a hammer and a piece of wood and now they are free!
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#4
(08/09/2019, 03:11 PM)Mark.mcglynn Wrote: I gave each piston a good thump with a hammer and a piece of wood and now they are free!

They may be free but best to remove them and clean out all the rust and gunge which will be on the ring + you now may have broken rings.
The bores will also need sanding to clear any rust deposits.
Regards
CB
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