Story so far series 1 resto

[frankxhv773t]

That water channel in the top right of the last picture looks like it's getting a bit close to the cylinder. Will that need welding or will you get away with it as is?

frank T

[lancianut666]

Hi Frank
I will risk it for a biscuit...might be a bit busy with other stuff so if I could get the car mobile it would be helpful, will try and clean the head up a bit more then try a new gasket on it to see what it looks like
Clarkey

[davidwheeler]

 
Cold Metal Spraying


UK agent Nick Gilfillan   nick@dycomet.co.uk  M: +44 (0) 7768 622448
http://dycomet.co.uk/


will repair that head quickly, safely and extremely effectively.    He has done wonders with my badly corroded Lambda head (see in Lambda forum  "fingers (and toes) crossed" and "technical data only" threads).   Get it done now and save much trouble!

[lancianut666]

Hi all
the head is in for skimming will see how it looks when I get it back. I had a look at 3 other heads in the consortium spares and they all looked the same in that area..
Clarkey

[davidwheeler]

which may mean that they all fail in the same place!

[lancianut666]

Hi
the machine shop man will ring me tomorrow so we will see what he has to say, to be honest I am too busy to spend a lot of time on this so if he is doubtful we will get it welded up better safe than sorry
Clarkey

[davidwheeler]

I hope he is a good welder then, welding aluminium is tricky and uses heat with a risk of distortion - hence cold metal spraying.  If the metal of the head is sound then it will be OK but old aluminium is often polluted and will not weld as I found to my cost on my Lambda block.     If you get into trouble then cold metal spray is the way to go and I do not get any payment from it either!

[lancianut666]

Hi all
the car is in his new home and the head is back from the machine shop see pics. I employed 2 son power to push the little beast round the industrial estate to the new unit, nice to report the brakes are sort of working.When I have finished the move I will hope to get the engine back together... I lost one of the tiny circlips on the valve stem are they mega important?
Clarkey

[lancianut666]

Happy New Year!
managed to squeeze a few hours in on grinding the valves in so have got 2 exhaust ones done will post some pics later

looks like it might be a bit fiddly getting the valves back in anyone know any wrinkles for this
Clarkey
ps have some mystery objects after the latest move when I get my camera sorted I will put the pics up

[lancianut666]

some more valves ground in 3 to go one of the exhaust valves was sticking over the first 10mm of movement ,bit of fine emery on the stem and now sorted. the inlet valves were a bit pitted and the seats crusty.
Clarkey

[lancianut666]

see pic of inlet valve seats

[fay66]

Nice even matt finish

Brian
8227

[lancianut666]

All valves back in...

[lancianut666]

Had to make a sleeve to fit the collets in the deeper seats
Clarkey

[will]

Looks very good the head now.

I wonder what the state of the pistons, rings and bores of your engine. My experience of loss of compression on the Appia can be that a piston ring has picked up. When I bought my car it was running on 3 cylinders. After I dismantled the engine. I showed Harry Manning no 3 piston which had a piece of metal missing were the top ring grove should be. He said it was a common problem and recommended using redex in the petrol as the top ring has
very little  lubrication. Over the years I had one piston pick up when the car was overloaded.
A quick check with the head off  is to fill the bores with paraffin and over a period of a couple of hours check which bores have any paraffin left if the bores. If the  pistons , rings and bores  are in good
order they should be very little loss.