2002 TD5 Exhaust Manifold Blowing & Prop Shaft replacement

[Lorrick]

Hi Everyone

I had the Engine upped to 170 bhp and as the manifold was blowing slightly before it was a lot worse afterwards,

I took the manifold off and had it lapped flat again as it was about 1mm high out at the ends, Put all new studs in the head, new gasket, torqued it all up and hey presto 600 miles down the road (in one day and) it is blowing again, this time from the centre. Is there a better gasket other than the Tin one, and is it worth cutting the webs between the ports to let it flex a bit more, and would the Cat be giving a back pressure?

Also I do about 1500 miles a week in the old girl and so it does get used a lot, the splines on the prop shaft (Original) although greased regularly are starting to Clonk when accelerating so I am looking into getting a new set of prop shafts, preferably with sealed UJ,s, any thoughts on a good one to go with, I do not do any off roading but a lot of road work with a Utility Wagon that weighs in at 2 1/5 ton

Any Ideas Welcome

Thanks Richard

[landroversforever]

Are you sure you got the manifold flat? Once its warped it should be unlikely to go again.

[Off Road Toad]

My 90 is chipped to 190 bhp with a VNT, as soon as I had the remap the manifold warped. I machined it flat put a new gasket on and studs BUT i took the webbing out and put landrovers diff/sump sealant on each side of the gasket - no problems for 10,000 miles now. I don't have a cat on the exhaust. My work mates 130 had the Jeremy fearn chip years ago and continually blew the manifold, remapped by Je engineering and kept blowing, Finally on advise from moi he did the machining AND removed the cat- problem solved. If you have a restrictive exhaust system on a tuned TD5 especially a cat I think it causes high gas temps. Steve

[Lorrick]

Thanks Steve and Ross I had the manifold lapped and was there helping in the workshop while it was done, and it was perfectly flat, I was told about the web removal and I will do that today, As for the Cat I will have to get a new Catless down pipe.

Thanks to everyone

Richard

[muddy]

You canweigh the cat in for more than the price of a catless downpipe.

Will.

[Lorrick]

Hi Will

I thought of that but what happens if it failes ann MOT on emissions ?

[landy andy.]

Diesels don't need cats, only vehicles with spark ignition, as in petrol engines.

Andy