Hi Guys

How do you remove the Chrome Exhaust Shield on an XJS 4.0L Engine (AJ16 Engine in this case)

Is it bolted on to the Down Pipe or Bolted into the Block or something else?

I would like to replace it or have it re-Chromed

Pics appreciated if anyone has them

 

Alex
If it is like the V12 it is bolted using the same fixings as the actual manifold.

 

My XJR had such a cover. From memory (ha ha) there are two bolts at the extreme ends and two lower bolts, the lowers being located just above the area where the downpipes mate up to the manifolds.

Cheers
DD

 

This may help

https://parts.jaguarlandroverclassic.../brand/jaguar/


Looks like one bolt down low and four bolts up high.

My memory obviously isn't all that great

Cheers
DD

 

Hi Greg

It is a bit different to the V12 but it looks like Doug has nailed it

 

Hi Doug

Cheers! You've nailed it!

The Bolts that hold the exhaust Shield on were so hard to undo (even though I've been soaking them in some Oil for Weeks) I thought I'd better check in case I was going to break something

 

You said you are removing it to clean it? I would liker to know what you find or how it looks when it is removed if you could take some pics. I hear loud ticking and cannot find where it is coming from. Loud when accelerating and I think I may have an exhaust gasket leak.

 

Hi Cnp

I'll see what I can do but I've had to abandon Ship on that for the moment, as I want to try and remove the IRS on 'The Ice Princess' or at least get a bit further on with it during this spell of nice Weather we are supposed to be having

Ticking Noise sound unusual for an Exhaust leak?

Can you do a Vid or something?

 

carsnplanes,

That could very well be a cracked exhaust manifold, so very common on AJ16 engines. It's usually a slight chuffing noise when cold that disappears in a few minutes as the manifold warms and seals the crack. Pull off the shield and look carefully and you'll see if there's one there. See my pic below and you can just see a light brown vertical stripe running through the "HF2" logo.




OB,

Is your chrome badly damaged? The shields respond well to really good cleaning. Try an abrasive chrome polish first.




Cheers

Paul

 

Hi Cnp

After you take the Bolts out to remove the Exhaust Heatshield (XJS 4.0L) the Holes that you are left with are Blocked off, so even with those bolts removed, no exhaust gas can escape

Maybe yours could be cracked like Paul (ptjs) has said?

Paul: I will try some abrasive polish and I also got a 'Leaf Blower' (great idea!)