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[JamesV6CDX]

I've been cleaning my valves - they all look as new, apart from the one that broke! It's a saving of £70, if I just get the head set without Valves.

Also - does anyone have a collett?! I managed to drop one half... it's not in the head because I saw it fall, but can't find it anywhere...

[Ronald_McBurger]

You can do just one valve if you want.

That collet. Pick it up with a magnet. It is there somewhere. If not, you can buy a collet for about a quid.

[Marks DTM Calib]

Are all the valves realy in a good state, no step on the valve seat at all, no sign of wear on the shafts, no pitting on the seats....

I would say post a pic, but its not worth the effort with that naff camera  

[Kevin Wood]

Problem is, it's easy to regret taking short cuts when you've rebuilt an engine and very difficult, expensive and time consuming to go back and correct it.

One of the exhaust valves failed in a big way. At least one of the other exhaust valves has been through exactly the same life as the failed valve, because it was in the same cylinder. The other 6 may well have been through the same. Depends exactly what caused the failure.

It could be that the failed valve was defective in some way and that the others are fine. It also could be that they're all at the end of their life and about to do the same. There's no real way of knowing how fatigued they are, even if they appear perfect.

An alternative mode of valve failure is that the head drops off and trashes the piston, head and block.

The package of gaskets plus valves on EBay looked very good value and I would certainly be replacing the whole lot if it were me, just for the knowledge that I haven't left anything in the engine that could bite me in the @rse one day. Maybe I'm just over-cautious.

Kevin

[JamesV6CDX]

Problem is, it's easy to regret taking short cuts when you've rebuilt an engine and very difficult, expensive and time consuming to go back and correct it.

One of the exhaust valves failed in a big way. At least one of the other exhaust valves has been through exactly the same life as the failed valve, because it was in the same cylinder. The other 6 may well have been through the same. Depends exactly what caused the failure.

It could be that the failed valve was defective in some way and that the others are fine. It also could be that they're all at the end of their life and about to do the same. There's no real way of knowing how fatigued they are, even if they appear perfect.

An alternative mode of valve failure is that the head drops off and trashes the piston, head and block.

The package of gaskets plus valves on EBay looked very good value and I would certainly be replacing the whole lot if it were me, just for the knowledge that I haven't left anything in the engine that could bite me in the @rse one day. Maybe I'm just over-cautious.

Kevin

I actually agree Kevin...

I've just been to the VX dealer, and got a collett.. £1.02 for 2.

They wanted £54 for ONE valve though,he even showed me on his EPC.

So I'm going to ket the kit, and do the lot...