cam replacement

[aitkindrum]

thinking of diy cam replacement for 99 griff. anybody done same. any advice greatfully recieved. have sh bible 2 but wonder if any other technical type reference to consider.? cheers

[xain]

I've looked into this, and I have the old Rover 3500 manual, which says how to remove the camshaft. It says that once you remove the valve gear (and the timing cover etc) that you can simply withdraw the camsharft. What I can't see is how you avoid the cam lobes getting stuck on the followers in "front" of them as you withdraw/replace the cam. Won't they fall down in the way?

[RichB]

Never done it on a Rover V8 but you must have to remove the pushrods and cam followers and the heads and the timing gear and the distibutor drive... In fact this is how a quick mod tuned into a full re-build on an MGA of mine once! Friend says I've got a "hot cam" you can have for your MG, me fitting it accidentally drops the diss'y drive into the sump, can't get the sump pan off, so engine out, whilst engine is out clean up engine bay then decide to replace rusty front wings oh and may as well re-trim the seats oh bugger ity re-spray the whole car... 18 months later... My advice on DIY these days? Don't Involve Yourself ! Rich...

[mongoose]

dont know too much about this either,but the heads dont have to come off-of that im certain.had the cam changed on my chim by my local garage and saw some of it being done.very basically you remove the rockers,then pushrods and followers then extract cam after removing exhaust'y' peice,timing cover etc.think from memory it took 8 hours all in.hope this helps clarify a little,though id have thought someone on hear knows how its done-iff all else fails a haynes rangerover manual should be fine for the specific parts of doing it and torque settings etc.

>> Edited by mongoose on Friday 21st March 17:28

[aitkindrum]

thanks all still considering despite very valid argument for Dont Involve Yourself . Will follow advice and get haynes Range Rover manual if only to satisfy curiosity. assume only difference is ancillary stuff. cheers

[aitkindrum]

bought haynes for rangerover and although bits about cam replacement there is nought on pre load setting procedure which i had read was essential either sh book or other ph thread. can anybody enlighten me? ta

[scruffy]

Yours will be the serpentine I'm guessing, however, no matter - if you give me day or two to get back to balckburn then sir, I have made a few notes, having done mine - believe me, it's not exacly standard!!

You should have mail presently...

Edited but not changed the appaling spelling of blackburn - retained so that people can laugh at it...

>> Edited by scruffy on Sunday 23 March 02:06

[blue streak]

Hi,

I changed the cam in my 4.0 litre Chimaera, was quite easy although it will involve removing a fair number of items:

Bonnet
Inlet Manifold
Timing Cover
Sump (Although you can get away without doing this)
Exhaust - though you don't need to remove the manifolds

Took about 2 days. Oh yeah don't forget to check the pre load with the new cam. This is all standard Rover V8 stuff but the best manual to use is the Land Rover Discovery or Range Rover manuals to get the correct torque figures for the 4.0 litre.

[xain]

In my Haynes manual it seemed the other way round to what I expected, ie they claim you have to remove the camshaft in order to get the followers out, because they are extracted downwards.

Can't see how this can work though, hence my question.

[GreenV8S]

Quinny said: One thing to be really carefull of when changing a cam is damage to the cam bearings, the faces on these are really soft and if a lobe catches one whilst either replacing or removing the cam, it will put a gouge accross the bearing face.
Quinny.

Which may not sound so bad, but if you have to replace the cam bearings you will need to have them reamed in situ which means stripping the engine.

[aitkindrum]

thanks guys. Regarding haynes manuals bought range rover manual says up to '92 3.5 and 3.9V8. instruction regarding engines rebuild bit limited. exchanged with halfords for landrover disco which covers same engines apparently up to '98. instruction re engines was more informative imo.neither had any info re preload setting. hopefully all my queries will be answered by scruffy's email. thanks again in anticipation ada