'92 XJS 5.3 Marelli - Possible dropped valve seat

[sbobev (Steve)]

@Geekay

My question is this - My gasket is a continuous one on both manifolds.

This is how the new gaskets are. From the archives:

[v12-engine] It's the Chain Tensioner!

In reply to a message from Kirbert sent Tue 28 Oct 2014: Kirby: This may have been true on the older engines. The 6.0L will take the gasket as one piece, no problem whatsoever. I’ve done it and posted on here: http://forums.jag-lovers.org/av.php?1572657n12 One more reason to update the ‘‘Book’’ N.B. There are pink and green ones out there. Don’t know if one is the real deal and the other is the knock-off. Steve– The original message included these comments: Inlet manifold gaskets …

and

Sealant vs Dressing

+1. When we covered this very topic some time ago, there was some interesting discussion: