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As you can't measure it exactly but know it's not far off, I'd take the gamble and put it back on
Well I’ll have to shorten the valve stem also to avoid issues I suppose.That may depend on the limits of the camshaft followers
The head gasket had 3 holes in it, I think that’s the largest available gasket. I could coat it in VHT copper cement spray for head gaskets in an effort to fill in the gaps.BMW say the head cannot be skimmed and as it's prone to cracking, personally I wouldn't go for a skim. I recon the head would pull down OK but it's a gamble as is skimming but it's the cheaper option.
Never tried anything like that. I have only really done alloy heads on 4 cylinder cars, I have found that they will pull down with some distortion. I do a trial with engineers blue, I coat the surface and fit with no gasket and torque down. Leave over night and remove. You can then see any places where the head and block do not meet.The head gasket had 3 holes in it, I think that’s the largest available gasket. I could coat it in VHT copper cement spray for head gaskets in an effort to fill in the gaps.
Ok seems a good idea, I’ll try this first with the old bolts. I’m using new bolts with the new gasket.Never tried anything like that. I have only really done alloy heads on 4 cylinder cars, I have found that they will pull down with some distortion. I do a trial with engineers blue, I coat the surface and fit with no gasket and torque down. Leave over night and remove. You can then see any places where the head and block do not meet.
Yep, the old bolts are fine for the test.Ok seems a good idea, I’ll try this first with the old bolts. I’m using new bolts with the new gasket.
BMW say the head cannot be skimmed and as it's prone to cracking, personally I wouldn't go for a skim. I recon the head would pull down OK but it's a gamble as is skimming but it's the cheaper option.
Hi Guys,
I'm in the process of assembling the engine. I was cleaning the hydraulic valve tappets and found that some of them do not move, like half of them are stuck. Can they be dismantled or is it better to replace them all together?
Secondly, Once the lower chain is ligned up between the crank and the fip is does not matter were the copper links are for the alignment of the camshaft right? As long as piston 1 is at TDC.
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The tappets are out actually but they don’t seem to work properly. The inside part that touches the valve stem is spring loaded. Some of them do not move when I try to push on them, even with the oil out.As far as the links are concerned I would do it exactly as per RAVE.
I don't recall any issues getting my tappets out once the camshaft was removed. I guess a squirt of something like WD40 wouldn't hurt and maybe use a magnet.
You could try soaking them in a bath of Acetone which may free them off. Don't use WD40 which is a water dispersant it leaves a deposit that may not be helpful.The tappets are out actually but they don’t seem to work properly. The inside part that touches the valve stem is spring loaded. Some of them do not move when I try to push on them, even with the oil out.
The tappets are out actually but they don’t seem to work properly. The inside part that touches the valve stem is spring loaded. Some of them do not move when I try to push on them, even with the oil out.
I mean the buckets that sit over the valve assembly. On the inside of those buckets or tappets there is a spring loaded part. When in use they are filled with oil. When they get stuck the valve clearance is no longer correct.The valve stems have springs held in place by washers and collets. They require a valve spring compressor, a big one, to loosen them off, grab the 2 halves with a magnet and release the springs. Or are we talking about something else?
Small update. Omdat engine is out, managed to take it out and leaving the torque converter in place. Engine mounts are shot. Waiting for them to arrive and good weather to get newly built engine in. Alas still need to remove bearing at the back in crank because new more was originally a manual gearbox. I hope with a bit of luck I get the new lump in before the end of the year
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They are generally pretty reliable as they rotate slightly every time they are used. Can see why a stuck one would cause upset, we all know what M51 tickover sounds like on cold startI mean the buckets that sit over the valve assembly. On the inside of those buckets or tappets there is a spring loaded part. When in use they are filled with oil. When they get stuck the valve clearance is no longer correct.
I did remove the coolant radiator, oil cooler and intercooler just not the condenser.You did that the hard way! If you remove the slam panel and radiators you get a load more space at the front and don't have to lift the engine so much.
I also didn’t get the bolts out for the bumper bulbar. I finally managed with a bit of persuasion. So new condenser and dryer are in.You did that the hard way! If you remove the slam panel and radiators you get a load more space at the front and don't have to lift the engine so much.
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