Vehicle & Technical > Discovery
300tdi Head gasket ??
loony landy:
--- Quote from: Fruitloop on December 26, 2008, 19:12:03 ---Just remember to torque it back up again then angle the bolts
--- End quote ---
Whats this angle the bolts ??? i know torque :)
Range Rover Blues:
At the back driver's side of the engine there should be a flat "bit of gasket" that protrudes from the joint, roughly alongside No.3 or just behind it. It will have a number of holes punched in it, most often 3 denoting a "3 hole" gasket.
Be careful, a lot hit the market incorreclty market, I've got a 3 hole with only 1 hole in it. Measure the thickness of that peice of gasket, not the used part which will have crushesd down.
Or if you fell competant then measure piston projection on the front and back of all 4 pistons. My sister's 300 TDi should be a 2 hole except for one piston that is in slightly tapered, it runs form a 1 hole to a 3 hole, so I fitted a 3 hole. Annoying as the rest of the engine is 2 hole and would run better as such.
Don't be lazy and fit a 3 hole "just to be safe", there are 4 different gaskets for a good reason.
BUY A GENUIEN GASKET, or you may well be doing it twice.
Check the head for flatness, the LR manual says you can't skim it EVER, news flash, lots of us do :twisted:
Whilst it's off clean the inlet manifold with petrol, the inlet ports too in the head plus the pipework and intercooler (I cleaned the turbo with WD40 too). then fit an EGR blank and reroute the engine breather to the bottom of the airbox. Ours has an oil catch tank and baby K&N filter too, I blanked the hole in the airbox pipe with an old plastic radiator plug. A year later and the insides are still clean :) plus I know any oil in there now comes for the turbo [-o<
Range Rover Blues:
--- Quote from: loony landy on December 26, 2008, 19:13:46 ---
--- Quote from: Fruitloop on December 26, 2008, 19:12:03 ---Just remember to torque it back up again then angle the bolts
--- End quote ---
Whats this angle the bolts ??? i know torque :)
--- End quote ---
The bolts are stretch bolts (typical of iron/ali engines and don't need retorquing after 500 miles) so you tighten them up to a set torque then the following 3 stages (2 on the outer rows) are done by angle torquing, sufficient to make the bolts behin to stretch.
Stretch bolts can be re-used up to 5 times, though 3 is recomended. If you do re-use then centre punch one dimple on each bolt head to signify they have been re-used. I may be wrong but they have 5 stars on the head~5 uses~5 centre punch marks.
loony landy:
Cheers for that, does anyone have the torque settings for them and what angles??
Range Rover Blues:
Buy decent bolts, they will have the settings on the instructions, either there oron the packaging for the gasket.
The angles are 1)-60 deg, 2)-60 deg and 3)-30 deg for the inner rows only.
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