There's so much conflicting info out there. Many people say to always use a 3-hole. Some say always re-face, some say never re-face. End of the day you have to find someone you can trust, and you're that guy for me.
What does it happen if one uses a thicker gasket than needed? It would affect the compression rate, right? If so, more diesel and less power? But, would it be noticed? Thanks mr. Mike, as always, nice content and really good info.
Well we learn something every day ! Is this common outside LR a LR solution to accommodate loose block manufacturing tolerances? I've got a suspicion my 1978 Range Rover head gasket has let go so do I need a similar approach there when I exhume it from the shed I wonder?
@@BritannicaRestorations Thanks, so at least I have no choice on the gasket ordering. Any brand recommendations ? I have an unmolested 3528 from 1978 with carbs . Coolant tank was bubbling last time I started it....
Going back a bit but the early RR had a thin metal shim gasket, (not like the Tdi where you had choices of thickness) later had a composite gasket and later still they stopped fitting the 4 bolts closest to the exhaust manifold as it caused the head to tip
I am not sure Dave - in the good old days they used to make diesel pistons taller and you had to face them off to level with the block face I know it is not to do with the head face It has to do with modern direct injection as indirect injection the do not bother and have a regular gasket
So when did that happen I wonder ... Always interesting to see what folk do when they don't know what they're doing. There's not much excuse these days given that google has been around for a while if you can't find the manual!
Got one on mine - was three hole, but a slight skim of the head to tidy up a welded repair for gas erosion meant the valves were perhaps a couple of thou closer to the surface, so the engineers recommended the thickest gasket. Worked fine - no contact.
....I must confess that I'm a sloppy bugger who has always just fitted the thickest I could find....and have never bothered measuring the protrusion....but then again I'm a grumpy old bugger and demand the right to do things wrong because that's what I've always done!!....LOL
Just to keep you up to date... 😉 New Brexit chants have appeared: „The virus needs us more than we need the virus“ „The virus is panicking“ „We must go for a virus style deal“ „The consequences will be much worse for the virus, than for us“ „The german car industry will tell the virus to bugger of“ „virus means virus!“
@@mrcvry I've been making my own hand sanitizer with methylated spirits diluted with 20% water. Constantly spraying after touching anything. I think I'm more prone to spontaneous combustion than Coronavirus.
Britannica Restorations Ltd Might have had that when it left Lode Lane, but after 24 years and nearly 200,000 miles I reckon I’ll be lucky to be getting 80 bhp from mine now 😂
People throw on 3 hole gaskets because they don't measure anything and they know it can't be too thin. You lose performance but it is quicker than measuring and waiting to buy. Lazy hack job mechanics.
Because the head was the original and been skimmed in the past this needs at least 15 thou off it . LR recommended not to machine the head as it has a 'hardened surface' but many have been machined with no issues You could skim it in a 'get you home emergency' but I could not give a warranty But whatever you take of the head you have to take off the valve seats - it's getting thinner all the time!
@@BritannicaRestorations ref the valve seat comment Mike, I totally agree it's the right way to go cutting the valve seats back by the same amount as the skim. But you could get away with fitting a thicker gasket if the difference in thickness from the original gasket equalled the amount you'd skimmed off the head. Not right but it'd work. I guess the reason for the different gasket thicknesses in reality, is to allow for the block being skimmed off and therefore maintain the piston to head clearance within spec.
As you say the surface is hardened therefore you wouldn't warranty it if you skimmed using carbide inserts on a decking/milling machine. What about surface grinding as this is the correct process for hardened material so would you warranty it then? Just curious :-)
There's so much conflicting info out there. Many people say to always use a 3-hole. Some say always re-face, some say never re-face. End of the day you have to find someone you can trust, and you're that guy for me.
I have not much experience on Td5 as I hardly see any here - but I will reply to your email
What a great video and people like you taking time to share this information are a gent. Thankyou
Glad it was helpful!
Dead Easy practical and realistic check for piston protrusion so absolutely no excuse in not having a dial gauge!
Hi Mike very well done as always very great help many thanks Eliot
I'm enlightened!!! Thank you so much Mike 👍
My pleasure!
In the states you can go to Harbor freight and pick up a dial indicater pretty cheap.👍🇺🇸
What does it happen if one uses a thicker gasket than needed? It would affect the compression rate, right? If so, more diesel and less power? But, would it be noticed? Thanks mr. Mike, as always, nice content and really good info.
You need good compression - so every little helps!
My bad boy has been very useful over the years lol
No need to skite!
Cheers mate great tip
No problem 👍
Well we learn something every day ! Is this common outside LR a LR solution to accommodate loose block manufacturing tolerances? I've got a suspicion my 1978 Range Rover head gasket has let go so do I need a similar approach there when I exhume it from the shed I wonder?
Nope there was no shim gasket on the Range Rover
@@BritannicaRestorations Thanks, so at least I have no choice on the gasket ordering. Any brand recommendations ? I have an unmolested 3528 from 1978 with carbs . Coolant tank was bubbling last time I started it....
Going back a bit but the early RR had a thin metal shim gasket, (not like the Tdi where you had choices of thickness) later had a composite gasket and later still they stopped fitting the 4 bolts closest to the exhaust manifold as it caused the head to tip
Mike next video please show how to ID a different gasket based on holes
When the gaskets come in I will show you
Mike
Is this a result of sloppy factory tolerances, or variances due to replacement pistons and/or machining of the cylinder / head deck?
I am not sure Dave - in the good old days they used to make diesel pistons taller and you had to face them off to level with the block face
I know it is not to do with the head face
It has to do with modern direct injection as indirect injection the do not bother and have a regular gasket
So when did that happen I wonder ... Always interesting to see what folk do when they don't know what they're doing. There's not much excuse these days given that google has been around for a while if you can't find the manual!
No hole head gasket! ......I wonder why Mike has never seen one ........maybe its just a plain sheet of steel .......stored next to the sky hooks?
Lol!! Lots of guys fit the 3 hole and be done with it
Got one on mine - was three hole, but a slight skim of the head to tidy up a welded repair for gas erosion meant the valves were perhaps a couple of thou closer to the surface, so the engineers recommended the thickest gasket. Worked fine - no contact.
....I must confess that I'm a sloppy bugger who has always just fitted the thickest I could find....and have never bothered measuring the protrusion....but then again I'm a grumpy old bugger and demand the right to do things wrong because that's what I've always done!!....LOL
That is why I suggest use a feeler gauge - you can feel the difference in height - I did check first with the dial gauge
Your confusing people with facts and logic again Mike.
Thanks for sharing a cheap trick for those without a dial gauge.
Sometimes the old ways are often forgotten!
@@BritannicaRestorations You Tube seems to be helping to preserve all the old knowledge. Fantastic.
Just to keep you up to date... 😉
New Brexit chants have appeared:
„The virus needs us more than we need the virus“
„The virus is panicking“
„We must go for a virus style deal“
„The consequences will be much worse for the virus, than for us“
„The german car industry will tell the virus to bugger of“
„virus means virus!“
Very good!
We have 4 cases here in Quebec - probably too cold for it to be passed on...
@@BritannicaRestorations Viruses like the cold, it's heat they don't like.
Britannica Restorations Ltd
Probably too cold to touch other people. 😉
Handshakes are deadly.
@@mrcvry I've been making my own hand sanitizer with methylated spirits diluted with 20% water. Constantly spraying after touching anything. I think I'm more prone to spontaneous combustion than Coronavirus.
@@coyote5735 so why are there so many cases currently in hot climates? 🙄
Thicker Gasket better than too thin, Would only lower the compression slightly.
Make little differece what gasket is fitted its an old landrover diesel not a space shuttle
More Squeeze more bang eh Mike?
With only 111 BHP you need all you can get!
Britannica Restorations Ltd Might have had that when it left Lode Lane, but after 24 years and nearly 200,000 miles I reckon I’ll be lucky to be getting 80 bhp from mine now 😂
Lol! Yes, quite a few ponies have left the paddock now!
It is so funny how people expect old motors to have factory max specs!
People throw on 3 hole gaskets because they don't measure anything and they know it can't be too thin. You lose performance but it is quicker than measuring and waiting to buy. Lazy hack job mechanics.
Why are you getting a new Head Mike?? do I still owe you $5??
Because the head was the original and been skimmed in the past this needs at least 15 thou off it . LR recommended not to machine the head as it has a 'hardened surface' but many have been machined with no issues
You could skim it in a 'get you home emergency' but I could not give a warranty
But whatever you take of the head you have to take off the valve seats - it's getting thinner all the time!
Forget the $5 - buy me a pint when I see you!
@@BritannicaRestorations ref the valve seat comment Mike, I totally agree it's the right way to go cutting the valve seats back by the same amount as the skim. But you could get away with fitting a thicker gasket if the difference in thickness from the original gasket equalled the amount you'd skimmed off the head. Not right but it'd work. I guess the reason for the different gasket thicknesses in reality, is to allow for the block being skimmed off and therefore maintain the piston to head clearance within spec.
As you say the surface is hardened therefore you wouldn't warranty it if you skimmed using carbide inserts on a decking/milling machine. What about surface grinding as this is the correct process for hardened material so would you warranty it then? Just curious :-)