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My Danish '84 Metro
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DotMatrix
Posted 23/8/2016 9:54 PM (#722600 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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headgasket blew again in the same place. this time there was no hole in the block or head, so after some cleaning up both surfaces was level enough to put in a new gasket.
I have tightened the head down first to 75nm and then three separate times I loosened each nut 90 degrees and then tightened it to 85nm after a drive in the car and each time the nut would tighten a bit more. which is worrying.






Benmin
Posted 24/8/2016 8:24 AM (#722601 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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Is this in the location that the block was welded?
DotMatrix
Posted 24/8/2016 9:37 AM (#722603 - in reply to #722601)
Subject: RE: My Danish '84 Metro


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Benmin - 24/8/2016 9:24 AM

Is this in the location that the block was welded?


yes.
forcker
Posted 24/8/2016 5:31 PM (#722608 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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Cometic multi layer steel head gaskets are very expensive compared to normal ones, but if they last it could be a good investment:

http://www.minispares.com/product/Classic/C-AHT189.aspx
forcker
Posted 24/8/2016 5:32 PM (#722609 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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Cometic multi layer steel head gaskets are very expensive compared to normal ones, but if they last it could be a good investment:

http://www.minispares.com/product/Classic/C-AHT189.aspx

And as far as i know it's a bit thicker, which would lower the compression a little bit. 
DotMatrix
Posted 25/8/2016 2:28 PM (#722621 - in reply to #722609)
Subject: RE: My Danish '84 Metro


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forcker - 24/8/2016 6:32 PM

Cometic multi layer steel head gaskets are very expensive compared to normal ones, but if they last it could be a good investment:

http://www.minispares.com/product/Classic/C-AHT189.aspx

And as far as i know it's a bit thicker, which would lower the compression a little bit. 


yes I know about that gasket. haven't tried it though but it is definitely a thing that I could try, along with ARP headbolts.
if the compression height stated on minispares webpage is correct it is about the same as the one I normally use.

Edited by DotMatrix 25/8/2016 2:31 PM
DotMatrix
Posted 4/9/2016 9:54 PM (#722674 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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Location: Jelling, Denmark
so I did some work on this car this weekend. fitted a new head gasket, fitted new stronger head studs and fitted a tap to take water out of the end opposite the thermostat. I moved the thermostat down inside the housing and I then connected the new tap to the old heater tap which is now on the radiator side of the thermostat this is then effectively a bypass hose. this is the only bypass now, I do not have the heater connected or anything, so it will be exciting to see how this works.

in the mean time I took the clutch cover off to change what I thought was a knackered release bearing but it turned out to be the clutch pressure plate that had come apart. the problem is now that the clutch is stuck on the crankshaft and we have not yet been able to pull it off.












Edited by DotMatrix 4/9/2016 9:59 PM
MetroGaz
Posted 8/9/2016 11:00 AM (#722692 - in reply to #455743)
Subject: My Danish '84 Metro
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Hi Martin

Interesting stuff and good luck with the clutch - looks a swine!

Keep us posted.

Gaz
DotMatrix
Posted 10/9/2016 10:49 PM (#722701 - in reply to #722692)
Subject: RE: My Danish '84 Metro


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MetroGaz - 8/9/2016 12:00 PM

Hi Martin

Interesting stuff and good luck with the clutch - looks a swine!

Keep us posted.

Gaz


spent many hours of banging cutting and grinding to get the clutch assembly off but now it has come off and a new pressureplate have been fitted.
DotMatrix
Posted 10/9/2016 10:52 PM (#722702 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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Location: Jelling, Denmark
here is a picture of where the clutch had welded it self to the crankshaft. no wonder it was so difficult to get off

R100_vvc
Posted 12/9/2016 10:14 PM (#722708 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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Most people would of given up by now with the number of issues you have been having, good on you for keeping at it
DotMatrix
Posted 13/9/2016 12:01 PM (#722709 - in reply to #722708)
Subject: RE: My Danish '84 Metro


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Location: Jelling, Denmark
R100_vvc - 12/9/2016 11:14 PM

Most people would of given up by now with the number of issues you have been having, good on you for keeping at it


yes there have been a lot of trouble this year. haven't done one race this year without it breaking and yesterday when I pulled the dipstick it was all creamy so currently looking at that problem hoping to fix it before the last race of the season in the weekend. I think I will have to make a new block for the next season but hopefully not a new cylinderhead.
DotMatrix
Posted 1/1/2017 2:32 PM (#723153 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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Location: Jelling, Denmark
The engine is out again and everything looked great apart from the blown headgasket and the water in the cylinders which I allready knew about.
The last two headgaskets have blown between the water way and cylinder number 4. this change in behaviour happened after I rerouted the water and fitted better headstuds and bolts.








DotMatrix
Posted 24/1/2017 11:07 PM (#723227 - in reply to #455743)
Subject: RE: My Danish '84 Metro


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Posts: 4458
200020001001001001002525
Location: Jelling, Denmark
the machining shop called and said that the block was not usable anymore and they thought it would be best to make a new block, so I have dropped off a fresh fully standard block for them to bore out so that my omega pistons fit, fit my 4 bolt centre main bearing cap and line bore the bearing caps. hopefully this new block will be more reliable.
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