I'm about to install the engine for the last time on my project and thought I'd share a couple of pictures of the area you never get to see around the throttle body. The first one shows the throttle body and EGR valve installed - you can see the 2 heater pipe feeds in the lower left and right valleys next to the heads, along with the endless coolant and vacuum lines. The second pic shows the throttle body and EGR valve removed (the only way to shoehorn the beast into a Mark 2). If anyone would like to see any other engine shots while it's out let me know and I'll post.

This is a 70k mile motor with unknown service history that was running fine when the donor car was totaled. All hoses and coil boots are like new - wondering if I should replace any or all now while access is easy. Also wondering about things like water pump and valve train components. Would appreciate any thoughts.

 

That is a rather unique perspective Doug...What about the tensioners? Have they been upgraded? Now is the time for sure if not. I wouldn't be concerned about the coil boots, mine had 120k when I did my tensioners and mine were still good, but that's up to you, its a 10 minute check. I would replace the valley hoses without thought, that is a mess you don't want later and a variable pain in the car to do. Does it look like the thermostat housing has been replaced? ..they were known to crack. Check your EGR pipe mating gaskets, they are able to be reused if they look good.

 

Thanks for the feedback - will definitely replace the valley hoses - wondering if the short ones connecting the intake plenum to the blower should be replaced?
The thermostat housing appears original so will replace that along with a thermostat. New EGR pipe gaskets are in hand.

I see plastic and springs in the upper tensioners so understand these are gen 2 and still prone to failure - will upgrade to the later metal style. I don't see much discussion of the lower guides and tensioners - aren't these essentially the same material and subject to similar wear and cracking? I see some kits available that include everything including new chains - is that overkill? Right now my chains are tight and all I notice is a little wear on the plastic glides on the upper tensioners.

Thanks again.

 

Since the engine is out do yourself a favor and change the lower tensioners, chains, and chain guides. I been in 4 seperate 4.0 engines and in everyone the chain guides had cracks in them. The link below has a recent discussion in the x100 forum about the guides and tensioners with info on replacement parts.

https://www.jaguarforums.com/forum/x...nt-kit-189047/

 

Many thanks - that wasn't the answer I was hoping for but it makes sense to do everything now with the motor on a table. The link for the crank pulley removal tool shows a variety of styles - I see a few for Jag/Range Rover on EBay in the $125-$135 range - is this one what's recommended? Also want to make sure the cheap plastic timing kits are adequate. I see metal tools in the $200 range but would rather not go there for a single use. Thanks again for the info. Wish me luck.

 

The style of crank puller you show in your pic is similar to mine and works great. The cheap timing kits are fine for a few uses but would want something more durable for everyday use.

 

+1's on Bob's replies, ...for my crank puller, I used my basic universal one. Just a note on the tension/timing sets...you may see Lincoln LS also listed, they used the same kit.

 

As you have the engine out I would suggest all tensioners and guides are replaced with the later metal version not overkill - due diligence.
I think you refer to the 2 blow off valve hoses, I doubt they will need replacing unless damaged from removal/install.
Your engine is supercharged and uses an alloy T-Stat housing, not plastic as on the NA units - expensive and pointless to change.

 

I went with SNG's timing kit ($630) for convenience. JCNA loans the tools which is neat so no purchases needed there. When I saw the price of a new thermostat housing I started digging and discovered the problem with the plastic version on the NA motor - but thanks for the heads up and tip on the blow off valve hoses - they appear to be in good shape.

 

Looking at pic 2, I see a part number tag on the fuel return pipe from the fuel pressure regulator that ends in 1AF. Can you post the complete part number? And, is the pipe from the regulator one piece that runs under the intake elbow?


Mark
2002 XJR-100

 

PN LPC14231AF. This is a single piece hose with a ribbed plastic protector that runs under the intake elbow and terminates at the fuel return line disconnect.

 

Thanks Doug. I've been collecting part numbers for the fuel pressure regulator on the X308 SC engines for a couple of years now, and this is a new one. Well, for me anyway; the UK guys may have seen it before.


Mark
2002 XJR-100

 

Just another thanks to those who suggesting replacing the timing gear. Here are a few pics showing the start of some upper tensioner cracking along with some very uneven wear from side to side. The cracking on the lower guides was a little disturbing.

 

Isn't it tempting to remove those flywheels on both intake cam sprockets? I almost did but chickened out.