Donuts
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 posted on 11/8/06 at 12:43 PM |
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broken MGB
my wife has an MGB gt and when I was driving it this afternoon (quite high revs) I heard a big pop, lost loads of power, then it seemed to be ok.
I was only 2 mins from mother in laws house so drove it there.............
when I opened bonnet there is a hole in the block!!!
It looks as though there was a sight glass or something there. anyone any idea's?
The hole is in what lookes like a man made circlular depression on the dipstick side in the middle.
I want to know if this depression is a sight hole that can be replaced or is it a new block job or what?
Fly Like a mouse, Run Like a cushion, Be the small Bookcase
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fesycresy
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| posted on 11/8/06 at 12:48 PM |
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Sounds like a core plug.
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The sooner you fall behind, the more time you'll have to catch up.
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02GF74
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| posted on 11/8/06 at 01:33 PM |
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is it a pre-69 engine, 3- bearing? The old engines had a small TV fitted tuned into BBC1 so you could watch it should you ever run out of petrol.
or maybe like ^^^^ siad, a core plug.
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mookaloid
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| posted on 11/8/06 at 01:49 PM |
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quote:
Originally posted by 02GF74
is it a pre-69 engine, 3- bearing? The old engines had a small TV fitted tuned into BBC1 so you could watch it should you ever run out of petrol.
or maybe like ^^^^ siad, a core plug.
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DarrenW
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| posted on 11/8/06 at 02:21 PM |
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How would a popped core plug cause loss of power? Just curious.
Its interesting that you say it lost lots of Power but was then Ok.
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mookaloid
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| posted on 11/8/06 at 02:32 PM |
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It sounds like one of his core plugs is holed. When all the water came out I bet if he'd looked in his mirror there would have been loads of
steam coming out. This would on a motor of that age have caused some temporary misfiring due to the damp on the HT leads and dizzy I suspect.
I hope he doesn't drive it any further!
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Peteff
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| posted on 11/8/06 at 03:09 PM |
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is it a new block job or what?
Buy a core plug of the correct size, clean round the hole with some wet and dry, I use some permanent gasket seal like red foliac on it then knock the
new plug in with a drift till it sits level with the block. The last plug I bought was 35p.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Donuts
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| posted on 11/8/06 at 07:01 PM |
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thanks for all the help, a new core plug is on its way and will be fixed by the end on the weekend
cheers
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