Thread: TD5 Exhaust manifold removal

Never mind., got rid of some of the other rubbish that was in the way, and gave it half a can of WD-40. All good now

Originally Posted by Pinelli

Never mind., got rid of some of the other rubbish that was in the way, and gave it half a can of WD-40. All good now

Do you have the rave dvd? can recommend it, Bob

Yeah, somewhere. I have a read from time to time when something is particularly perplexing, but generally manage to find my way around the bonnet without too much trouble.

Got the water pump off (it's quite a job this weekend) and it's full of this brown gunk. My first thought was that there was some corrosion in the engine (previous owner has been running the green coolant), but I'm starting to suspect that it's actually power steering fluid leaking through and mixing with the water. There is definitely some fluid leaking form that part of the engine bay, and suspect no 1 is the PS pump.

Any thoughts?

Originally Posted by Pinelli

Yeah, somewhere. I have a read from time to time when something is particularly perplexing, but generally manage to find my way around the bonnet without too much trouble.

Got the water pump off (it's quite a job this weekend) and it's full of this brown gunk. My first thought was that there was some corrosion in the engine (previous owner has been running the green coolant), but I'm starting to suspect that it's actually power steering fluid leaking through and mixing with the water. There is definitely some fluid leaking form that part of the engine bay, and suspect no 1 is the PS pump.

Any thoughts?

With respect, my thoughts are, study the RAVE dvd . For example, it gives excellent step by step instruction on exhaust manifold removal, & replacement. What did you torque the manifold nuts to? Bob

Hi Bob,
Manifold not back on yet. It's at the shop being 'skimmed', I hope, although it is substantially warped according to my straight edge. I'm not convinced it can be machined as two of the ports are about 2-3mm different to the rest. How much can you take off these things and still be reliable???

I'll take your advice and have another squiz of the Rave, although job is mostly done now. I pulled pretty much everything off the left hand side of the engine trying to sort out some leaking oil and missing coolant. Found one gasket missing, one manifold stud missing, and a couple of other dodgy bits. Supposedly serviced by a 'well known' Landrover mechanic in central qld. More than happy to PM anyone the name of a mechanic to avoid if they like.

Anyway, mostly back together bar the turbo and manifold. Curious about opinions of the gunk in the water pump though. I'm hoping its just an emulsion of power steering fluid and coolant.

Your post prompted me to do my manifold as I knew I had a broken stud.

Removed manifold to find it was also like a banana & gasket mostly burned away on number 5

I measured the manifold by placing it face down on a 6mm sheet of toughened plate glass, warpage = 1.75 mm
After grinding away the webs the stress relief pulled it back to 1.2mm warped.
So if your planning on dewebbing , better to do before getting it planed.

Car runs noticeably quieter now, I thought that noise was normal

(Whilst I was at it I replaced all the hoses and thermostat, for its 150,000 klm birthday, what an absolute mongrel of a job, lucky I did too because the small hose that goes from the front of the radiator to the fuel cooler was almost rubbed thru to the inner layer from sitting against a corner of the steering box )

Manifold is currently at the shop for machining - I asked them to partially deweb it as well, so hopefully they'll remember!

I'll hve to have a check of that hose you're talking about too, not that any of the rest have been a problem so far, but worth a look.

While the manifold is off, replace the small hose tucked under the manifold, going to the oil cooler. This has probably copped a heap of hot exhaust gas and hardened it.

Also as well as removing the web, I drill out the outer 4 holes on the exhaust manifold a few sizes to allow movement - Alloy head, cast manifold - different rates of expansion with temperature change.




Erich