Chat & Social > The Bar - General Chat
new engine shot, part 2.
Range Rover Blues:
I'd suspect that the cam was not in fact new but original to the engine 9or 'an' engine) and it's taken about a day to go through the pre-lube and any oil they used to 'prime' the lifters during the rebuild, it could have been thicker oil or more pre-lube.
An alternative is a blockage in the oilways supplying the lifters.
If you get as far as looking at the top of the camshaft (Inlet manifoild off) then cranks the engine and watch the lifters. If any of them are NOT spinning slowly then the camshaft is worn out. Check they all have oil around them and on both ends of the pushrod, but basicaly this is how it starts.
Tommo:
you did run it at 2k rpm for 20 mins when you fired it up to run the cam in yeah?
Thrasher:
Are you sure it's not just something as simple as a loose manifold/downpipe? V8's are notorious for undoing them ;-) when engine is cold - check all manifold to head bolts and also downpipe nuts ;-)
Oh and ... you haven't run it over 3000rpm have you? <eeeeek>
Guardian.:
no not been over 3000rpm yet, but to be honest, also dont believe in a lot of that, ive had several new v8's in the past and never run them in and never had a problem.
seeing as we paid for a cam kit origionaly, im assuming this has a new cam.
ive just given her a bit of a run, down the backroads overto the a1 and a few miles on there, then home, done about 80miles i should think, it drives spot on, sounds great, to be honest everything is working brilliant, and when i got back the tapping isnt as bad, but is still there.
reckon im just gonna leave it, and when its done 1000miles in a few weeks, it can be serviced and hopefully adjusted up, as dads had a listen and said summit needs shiming, but it isnt out serious, cannot remember what he said now.rod or something.
Range Rover Blues:
If the heads have been skimmed, the valve seats re cut or something like that then the rocker posts can need shimming to get the correct preload back into the hydraulic lifters.
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