No compression on 3/4 cylinders

for those with Series MM sidevalve cars produced between September 1948 and February 1953
Scottishmoggy
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No compression on 3/4 cylinders

Postby Scottishmoggy » Fri Mar 16, 2007 4:02 pm

As some of you know for the last little while Duncan has been a bit difficult to start...But I got him going after towing him yesterday. Today we went for his service and MOT...but after a very pleasant 20 mile drive he lost power and stopped only metres from the garage. The garage towed him. He has no compression on 3/4 cylinders, which implies either the valves, head gasket or pistons.
Can anybody offer any advice...club spares list some items but not all...How easy would it be to get spares...and what sort of price are we talking about...

cheers Chris
(and Duncan in another garage refusing to start!)

Welung666
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Postby Welung666 » Fri Mar 16, 2007 7:58 pm

Scottishmoggy, I have a couple of spare leaded heads in my garage in luton if it's the valves.

WPR678B
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Postby WPR678B » Fri Mar 16, 2007 8:31 pm

I think being in the Series MM section it is probably a sidevalve that we are talking about here? :-?

simmitc
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Postby simmitc » Fri Mar 16, 2007 9:54 pm

I haven't much experience on the older engines, but a 1098 is 95% certain that the head hgasket has gone between 3 & 4. I've found that it's a common problem accompanied by a loss of power and lots of noise. Contrary to commonly listed symptoms, the oil and water are never contaminated as the gasket maintains the seal around the various channels.

Onne
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Postby Onne » Fri Mar 16, 2007 9:58 pm

Gaskets and all you need to do a change is available from the suppliers.
Onne van der S. MMOCno 60520 Moderator
2dr 1971 White DAF 55 (with hopefully a 1600cc engine soon)
2dr 1973 Bergina (DAF 44)
2dr Estate 1975 DAF 46 in red
2dr saloon 1972 DAF 44 in Mimosa

Scottishmoggy
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Postby Scottishmoggy » Fri Mar 16, 2007 10:18 pm

Thanks for your help...I am going to the garage in the morning...I pretty certain there is a gasket in the boot...let's hope it's the right one... :wink:

Onne
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Postby Onne » Fri Mar 16, 2007 11:02 pm

Good luck!
Onne van der S. MMOCno 60520 Moderator
2dr 1971 White DAF 55 (with hopefully a 1600cc engine soon)
2dr 1973 Bergina (DAF 44)
2dr Estate 1975 DAF 46 in red
2dr saloon 1972 DAF 44 in Mimosa

pim123
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Postby pim123 » Sat Mar 17, 2007 1:09 am

Yep, happened to me....gasket renewal and on the road again !! Don't worry (I did :D )
[img]http://img.villagephotos.com/p/2006-8/1204893/morrispim2oud.jpg[/img]

Keith
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MM head gasket

Postby Keith » Sat Mar 17, 2007 1:23 pm

There's sidevalve 918cc head gasket set on ebay at the moment, at a good price, ends tonight, maybe worth a bid.

regards Keith

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... &rd=1&rd=1
Supercharger Engineering
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52 Series MM convertible, Alta head, supercharger and 1955 Series II facelift van

Onne
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Postby Onne » Sat Mar 17, 2007 2:04 pm

BMC 918 sidevalve.. crumbs it's a MORRIS :D
Onne van der S. MMOCno 60520 Moderator
2dr 1971 White DAF 55 (with hopefully a 1600cc engine soon)
2dr 1973 Bergina (DAF 44)
2dr Estate 1975 DAF 46 in red
2dr saloon 1972 DAF 44 in Mimosa


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