is 2.5 NA an non-interference engine? - Defender Source
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  #1  
Old September 8th, 2011, 08:01 PM
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Dylan Haas
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is 2.5 NA an non-interference engine?

hey guys i did a quick search and i can't seem to find anything on it. But is the 2.5 NA diesel a non-interference engine? because long story short my Timing belt broke/snapped or something and i want to know if i could have bent the valves or anything. thanks
Dylan
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  #2  
Old September 8th, 2011, 11:40 PM
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John B.
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No. All diesels are interference engines.

Fortunately, the engines use valves that hit the pistons dead straight and pushrods made of butter. Most of the time, only the pushrods get bent. Occasionally a rocker is broken, but bent valves are rare. The pushrods can be out in 15 minutes and you can check for smooth rotation and compression after replacing them.

It is very quick and easy to pull the head and check if you feel the need and it can never be bad to give the head an overhaul.
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Old September 9th, 2011, 07:12 AM
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thank you very much i will need to pull the head to check the push rods?
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  #4  
Old September 9th, 2011, 10:48 AM
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No. Take off the valve cover and then the rocker shaft. You might want to download the workshop manual....

http://defender-manuals.s3.amazonaws...Supplement.pdf
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Old September 9th, 2011, 04:18 PM
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Yea I kind of just realized what I asked when I posted that..... Sorry but I have that manual and I will take a look at it again, do you need any special tools to do the timing belt?
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Old September 9th, 2011, 05:27 PM
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You can get away without special tools. There is a good right up on either LR4x4 or LRA forums.

- The crankbolt can be tight and a good impact is useful but there are other method if you don't have access.
- A dial torque wrench is nice to have so that the belt tension is set as per the book.
- A bent handled wrench is handy for getting the fan off.
- You can use a drill bit to hold the injection pump in the right spot and you can set crank position by eye looking through the flywheel housing drain.
- You may need a puller to get the crank flange off, but not always.

edit: here is the writeup: http://forums.lr4x4.com/index.php?showtopic=14285
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Old September 9th, 2011, 09:16 PM
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ok awsome. thank you for all your help.
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