5 replies to this topic

[Wiggy]

Hello peeps.




I've just removed the head from my low mileage (didn't stop the gearbox form being knackered!) 2000 Cooper Sport with the JCW gubbins. All piston tops look normal and relatively evenly coked. All the valves look normal, apart from the exhaust valves on 1 & 4. They are very light in colour, almost white. Also the relating pushrods have slightly shiney patches on them about 2/3 of the way down them, whereas all the others do not.

What could have caused this, and is it a problem? Maybe the Tappet clearances have been set too tight for 1.5:1 rockers?



Any advice would be most welcome, and I can stick some pics up tomorrow if needed.

Wiggs.

[bmcecosse]

Pics would be good - it's normal for the outer exhausts to be 'white' - don't worry about that. Pushrod shiney marks - need to inspect carefully to see if they have been rubbing on the head casting ?

[Wiggy]

Cheers for the reply mate.

Is that a 'symptom' of it being a 5 port? I just thought that the rods may be related.

Maybe I'm just a bit paranoid, but it's better to seek advice to be sure.

I'll get the pics up tomoz.

[Wiggy]

How do these look then?



 S6302509.JPG   2.2MB   14 downloads

 S6302505.JPG   1.99MB   13 downloads

 S6302497.JPG   1.92MB   16 downloads

[Pauly]

Valves look normal, for an MPI anyway. (They always run slightly richer than they should). The pushrods look like they have been rubbing on the end of the followers? Just a shot in the dark from me.

Paul.

Edited by Pauly, 16 July 2009 - 08:40 PM.

[Mr Joshua]

Mate nothing wrong there.