Cam change..Engine in or out?
Discussion
It can be done with the engine in place.
Check your sump for how much material you've lost around the engine if its due to wear.
You'll need to remove the inlet manifold to get to the lifters and the front cover to get to the end of the cam.
You can leave the heads in situ but will need to get to the rocker assemblies to take pressure off lifters/push rods.
Be vary careful extracting the cam from the engine and reverse so as not to damage the bearing surfaces.
Stripping it is quite easy, mechano, getting it set up - timing - is the really tricky bit
Check your sump for how much material you've lost around the engine if its due to wear.
You'll need to remove the inlet manifold to get to the lifters and the front cover to get to the end of the cam.
You can leave the heads in situ but will need to get to the rocker assemblies to take pressure off lifters/push rods.
Be vary careful extracting the cam from the engine and reverse so as not to damage the bearing surfaces.
Stripping it is quite easy, mechano, getting it set up - timing - is the really tricky bit
If you take the sump off as Johnno suggests have a good look at the oil pick up pipe and make sure it is fastened securely into the block. Mine wasn't and had dropped, so the pump was drawing in more and more air. Which meant the pump was cavitating and starving the cam, lifters and rockers of oil which destroyed the cam.
It is in with V8 Developments for the rebuild and, as it was evident that the top end was starved of oil, they removed the engine to ensure no oil galleries were blocked. It was then they found the problem with the pick-up pipe, so, whilst it's out and with the problems others have had (Uncle Fester etc) I'm have the pistons replaced, top hat liners fitted, cross bolted main caps as well as a stealth cam, steel rocker gear, porting and inlet trumpet plate, plus a new clutch plate and bearing
It's a LOT of money but after only three weeks ownership I will feel much more confident with what I'm getting for the rest of my ownership plus the power increase from the work they are doing.
The guys at V8 Dev (Rob, Shaun and Ray) have been brilliant, keeping me well informed and giving good
advice.
Good luck with your cam change, if you do it yourself, change all of the timing gears as well and have a look at the oil pump and your rockers very closely for wear and swarf contamination.
There are some good threads on PH and on www.thegriffithpages.com as well as good write ups on the V8 Developments & RPI engineering websites about all of this.
YB
It is in with V8 Developments for the rebuild and, as it was evident that the top end was starved of oil, they removed the engine to ensure no oil galleries were blocked. It was then they found the problem with the pick-up pipe, so, whilst it's out and with the problems others have had (Uncle Fester etc) I'm have the pistons replaced, top hat liners fitted, cross bolted main caps as well as a stealth cam, steel rocker gear, porting and inlet trumpet plate, plus a new clutch plate and bearing
It's a LOT of money but after only three weeks ownership I will feel much more confident with what I'm getting for the rest of my ownership plus the power increase from the work they are doing.
The guys at V8 Dev (Rob, Shaun and Ray) have been brilliant, keeping me well informed and giving good
advice.
Good luck with your cam change, if you do it yourself, change all of the timing gears as well and have a look at the oil pump and your rockers very closely for wear and swarf contamination.
There are some good threads on PH and on www.thegriffithpages.com as well as good write ups on the V8 Developments & RPI engineering websites about all of this.
YB
Edited by Yellabelly on Saturday 19th July 16:28
When mine went I had V8D fully rebuild it as the amount of material floating around the engine made me nervous.
You can now get replacement gears for the oil pump (presuming you're a serpentine) rather than having to replace the whole front cover, but while it's off check it for wear.
You can now get replacement gears for the oil pump (presuming you're a serpentine) rather than having to replace the whole front cover, but while it's off check it for wear.
Cinquecento, good advice suggested by the other guys. I had a cam replacement due to a noisy cam at just 7500 mls, so thought everything else would be OK. 2,500 mls later, the new cam started to get noisy also. This time a full engine out, oilways check / flush etc and rebuild job (upgraded spec). During this we found the reason for both cams going. When the sump was fitted (presumably at TVR) they'd used liquid gasket, cutting off the outside bits when dry. However bits inside had fallen into the sump and got sucked up by the pick-up blocking much of the oil feed. Lack of a proper gasket costing a couple of quid ended up costing me around £5k.
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