8{|>
New Member
The criss cross pattern in the bore, made by a cylindrical grinder known as a hone. The marks left are called honing - 
mind you so is the act of grinding
If you have piston ring problems, the bores can become glazed a finish like a varnish - through combustion passing by the rings and burning the lubrication oil.
If you have end float problems on the piston assembly then the bores can become worn.
Tell tale signs of those issues are partial or complete obliteration of the honing
mind you so is the act of grinding If you have piston ring problems, the bores can become glazed a finish like a varnish - through combustion passing by the rings and burning the lubrication oil.
If you have end float problems on the piston assembly then the bores can become worn.
Tell tale signs of those issues are partial or complete obliteration of the honing
8{|>
New Member
The soot is normal - if you want to clean it use some diesel or cooking oil on a rag, but do wear gloves or barrier cream - there's some horrid crap in the soot that can cause skin cancers. 99.9% certain that you won't be harmed - but someone has to be the statistic!
Using diesel or vegetable oil means that it will burn off quick when you restart the engine - saves the uncertainty of prolonged blue exhaust smoke & you then thinking something is wrong - as we all would
Using diesel or vegetable oil means that it will burn off quick when you restart the engine - saves the uncertainty of prolonged blue exhaust smoke & you then thinking something is wrong - as we all would
OutbackJack
New Member
The sooty ones are normal...the oily one is normal considering the break in the gasket. Diesel ignites at about 360 psi and with the reduction in compression, the diesel oil would be left unburnt in that cylinder.James said:
Quite surprising that the gasket failed into a pushrod hole rather than into the water jacket or oil course as is usual for head gaskets in general, I dont know about LR diesels in particular.
Lenny1969
New Member
I have no idea about honing or crossmatching, unless its what yella does on his weekend nights like he told me.
However, i think a fookin big thank you is in order here to you guys.
Some have been slated on here for not helping out, and yet from the initial post from James this has all come about and his motor will be up and running again shortly.
Well done chaps, it has been emotional...................
However, i think a fookin big thank you is in order here to you guys.
Some have been slated on here for not helping out, and yet from the initial post from James this has all come about and his motor will be up and running again shortly.
Well done chaps, it has been emotional...................
eightinavee
Well-Known Member
While you have got the head off,take the oppertunity to change the valve stem seals - it will help keep the oil consumption down and lessen any blue smoke on overun.
Havent done this job for ages - I used to keep an example of a blown gasket to show owners what was wrong with their car.Good thing is,if you make a good job of this your engine will go on till it wears out and needs a full rebuild.
Havent done this job for ages - I used to keep an example of a blown gasket to show owners what was wrong with their car.Good thing is,if you make a good job of this your engine will go on till it wears out and needs a full rebuild.
James
Active Member
Lenney, I agree very much with you indeed, thanks guys.
L3on, I will look at bore 4, I thik it is fine, all the rest are the same.
YD, what did you want to witness?
8, at the monent it has not been using any oil or blue soke. Very clean and runs well, I do get a little piff of soke on start up, but that it.
L3on, I will look at bore 4, I thik it is fine, all the rest are the same.
YD, what did you want to witness?
8, at the monent it has not been using any oil or blue soke. Very clean and runs well, I do get a little piff of soke on start up, but that it.
