Valve cover bolt head size? - Land Rovers Only

krigsmakten · 12-06-2007, 11:24 AM

Help - can anyone tell me what size the valve cover bolts are?

'99 Disco II - in the process of tearing it down to replace blown head gasket.

Stuck right now - trying to figure out the size of the bolts holding the valve covers - are those 12-point torx or what exactly? Looks to be around 8mm size. I thought I had a well-stocked tool box but nothing that works there. Will head down and get some smaller metric 12-sided sockets. Anyone have a better suggestion?

BTW, let me vent some frustration on the design of the engine. Whomever placed the ignition coils where they are, should be drawn and quartered - no less! Imagine the aggregated waste of time and general frustration - not to mention labor time - heaped on mechanics and paid for by owners just because of this idiotic design...

There are other issues too - such as numerous bolts are not accessible with straight extensions... oh, well, it's British engineering...

Thomas

dgragu · 12-07-2007, 04:46 PM

it is a 8mm, You need a 12 point socket and needs to be a 1/4 drive, you cant get a 3/8 inch drive in there

krigsmakten · 12-07-2007, 09:07 PM

Thanks -for the info - I eventually figured it out on my own this morning, and even though it's hard, you actually can get a 3/8 drive to work. You just need to lean into it. :-)

BTW, this is another example of idiotic British "engineering" - for this type of application, a standard M6 allen fastener would have served just fine, and caused a lot less trouble for all parties concerned.

12-06-2007, 11:24 AM	#1 (permalink)
krigsmakten Member Join Date: Sep 2007 Posts: 7 Gallery: 0	Valve cover bolt head size? Help - can anyone tell me what size the valve cover bolts are? '99 Disco II - in the process of tearing it down to replace blown head gasket. Stuck right now - trying to figure out the size of the bolts holding the valve covers - are those 12-point torx or what exactly? Looks to be around 8mm size. I thought I had a well-stocked tool box but nothing that works there. Will head down and get some smaller metric 12-sided sockets. Anyone have a better suggestion? BTW, let me vent some frustration on the design of the engine. Whomever placed the ignition coils where they are, should be drawn and quartered - no less! Imagine the aggregated waste of time and general frustration - not to mention labor time - heaped on mechanics and paid for by owners just because of this idiotic design... There are other issues too - such as numerous bolts are not accessible with straight extensions... oh, well, it's British engineering... Thomas Last edited by krigsmakten : 12-07-2007 at 05:16 AM. Reason: no replies

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12-07-2007, 04:46 PM	#2 (permalink)
dgragu Member Join Date: Aug 2007 Location: Allentown, PA Posts: 19 Gallery: 0	it is a 8mm, You need a 12 point socket and needs to be a 1/4 drive, you cant get a 3/8 inch drive in there

12-07-2007, 09:07 PM	#3 (permalink)
krigsmakten Member Join Date: Sep 2007 Posts: 7 Gallery: 0	Thanks -for the info - I eventually figured it out on my own this morning, and even though it's hard, you actually can get a 3/8 drive to work. You just need to lean into it. :-) BTW, this is another example of idiotic British "engineering" - for this type of application, a standard M6 allen fastener would have served just fine, and caused a lot less trouble for all parties concerned.

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