Vehicle & Technical > Discovery
Knocking V8
Range Rover Blues:
If you swap the camshaft for a performance one you need to chip the ECU. Refit a stock 3.9 cam for about £70 or pay £350 for a performance one.
Cam followers can be done without stripping any further than the valley gaslet and rocker covers, depends hgow much money you want to spend.
denzil:
Thank you Range Rover Blues,I will probably keep to a standard cam .I want to take the heads off and check the valves while I am
at it and for the cost of a oil pump I might as well change that as well.Should I use a genuine cam and followers or after market
ones?.
Regards Doug
big tim:
--- Quote from: denzil on April 25, 2010, 14:26:19 ---Thank you Range Rover Blues,I will probably keep to a standard cam .I want to take the heads off and check the valves while I am
at it and for the cost of a oil pump I might as well change that as well.Should I use a genuine cam and followers or after market
ones?.
Regards Doug
--- End quote ---
Price of oil pump depends on which lump you have (i.e early or late spec) as later serp oil pumps are about 200quid i think for front housing or 75 for pump gears not sure on the price of early type. also might be worth checking your oil pick up pipe in the sump for either cracks or knackered gasket.
Range Rover Blues:
RPI no longer supply after market follower because they have had trouble with them!
Also worth fitting an upgraded cam chain and gears, I think a pre-serpentine will take a duplex roller chain. Not only can you then get the cam timing spot on but it will stay correct and not slip as soon as the chain wears.
Either way fit a decent chain.
Cam shaft, get a branded one or OEM, I'd ask RPI or someone what they use.
Whilst you have the heads off get them skimmed. An ali gasket is 0.5mm, the composite ones are 1.2mm so you can take quite a bit of head away if you refit with composite ones.
Also worth doing a bit of "fettling" within the head to improve gas flow, even if it's just a good clean up to restore performance.
Then fit new springs to the valves.
big tim:
RPI supplied me with bearmach parts got them last september time had no probs up to now which is what we like.
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