I don’t have any personal experience of dealing with them but I believe that Simply Performance are well respected.

https://simplyperformance.com/rebuild-service/

Thank you both. Deep down I know the proper thing to do is remove the head but I’m still in the denial phase

If I do go down the drill and tap route what type of metal screw is safe to use. As I believe a steel screw would react with the aluminium in the head.

I have an issue with the cylinder head on my 1985 series 3 XJ6. I had noticed some fluid collecting in the spark plug wells. I eventually realised that a core plug might be to blame. Having cleaned things up the two plug wells either side of a core plug had fluid in them. The fluid being coolant. Th...

Hello all The last time I posted a message I was asking for buying advice. I’m pleased to say that I have now taken the plunge and acquired myself a very nice 1985 series 3 4.2 Sovereign. Almost immediately I find myself with a dilemma. The engine is so smooth I can barely hear it. Yes I know that w...

Hello I have just signed up having recently been bitten by the Jag bug. I have yet to make my first purchase and was hoping for a few gems of wisdom, from those more experienced, to steer me in the right direction. If you could go back to the time of your first purchase but with the knowledge you no...