Engine block failure in 2001-2002 Range Rovers

robisonservice

robisonservice

Well-known member
May 23, 2004
110
6
Amherst, Massachusetts
www.robisonservice.com
In years past I've written several articles on block failure, and how we fix those motors with the flanged liners. In this most recent article I show how we diagnose a cracked block through examination of the evidence seen when the heads are removed. I'd be interested if any of you have seen similar signs, or have thoughts to add

John Robison

Article link: http://robisonservice.blogspot.com/2014/02/blown-head-gaskets-on-land-rover-v8.html

Some of you who have asked if the cracks spread from the head bolt holes or the cylinder bores, the answer is . . . BOTH The cracks extend from the bolt holes into the cylinder bores, as shown in this earlier story. Certainly - as one of you suggested - the bolt holes are
too close as evidenced by the cracks. Yet they are no closer than the head bolt holes in many other engines, and older LR engines did not crack.

We think the problem is grounded in the metallurgy of the late series LR blocks, and the tension stress imposed by the late series stretch head bolts.

http://robisonservice.blogspot.com/2012/09/flanged-or-top-hat-liners-in-land-rover.html

We address that by welding the cracks, and in some cases by fitting studs in place of the bolts
 
jsonova99

jsonova99

Well-known member
Apr 14, 2005
1,683
0
47
Snow Hill, MD
Are there things to look for while everything is seemingly still good on the D2/P38 motors that might point to the inevitable death of the engine ahead of time?
 
D

discostew

Well-known member
Sep 14, 2010
7,744
1,026
Northern Illinois
That's some good info in that article . I've been aware that no coolant should ever get too the center two cylinders unless the block is cracked . I think I would have noticed the coolant in the bolt holes , but now that you made me aware I'm gonna look a lot closer .
 
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