Vehicle & Technical > Discovery
Disco headgasket
J B:
landy tech's allways fit the 3 notch gasket as a matter of course :P
Range Rover Blues:
I've been looking for tech data on piston projection and it's sadly lacking in all the manuals I have so far seen. Fitting the 3 hole is mechanically safer as it's the thickest but there is a reason that 3 thicknesses were available.
On adeisel it makes a MASSIVE difference to the compression ratio, which at 19.something:1 is already comparitevely low, any lower and you start to lower the efficiency. Hmmmm :? wonder if that's why Julie's is not that economical :?:
Anyway WATCH OUT, I ordered a gasket off E-Bay and it was marked with only one hole, despite the auction being for a 3 hole. I rang uyp and was assured it was right and that there had been a tooling error.
Calliper guages to the rescue then. A 3 hole gasket is 1.6mm IIRC, the thinnest is 1.2mm and the middl one 1.4mm.
When I rebuilt my Cavalier head (comes in 2 peices :? ) I measured the piston projection before ordering the gasket to check it was correct. There was a choice of 4.
Xtremeteam:
i give up :wink: :roll:
i try to save the guy money cos im sure it will be the inlet manifold gasket & you lot end up bickering about how it goes together,
all we need now is abyssdj/keri to throw his oar in for no reason & it would be just like a normal thread on here
grow up
if you dont know what you are talking about STFU :!:
Xtremeteam:
--- Quote from: "dave_2A_2.25Turbo" ---That's because a 3-notch is the thickest, so is always suitable
--- End quote ---
its not
you get a no hole gasket which is thicker still
Ja1983:
HANDBAGS AWAY PLEASE!
lol, right, firstly CHECK and be sure it is the head gasket.
2 is this the 200tdi or 300tdi or other?
3 whats already fitted?
:lol: :arrow:
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