Vehicle & Technical > Range Rover
V8 Downpipe, one or two cats?
Jonny Boaterboy:
O.k My cats have had it they are getting nosier by the day. I want to cut them out. Can I just cut streight through the exhaust pipe either side of the cats and replace with a straight bit of pipe slightly bigger that the external diameter of the exhaust pipe slotting over and clamping? Do you need to remove the section of exhaust with the cats in to do this of can you do it in situ.
Happy new year!
Reggieroo:
--- Quote from: Jonny Boaterboy on January 05, 2009, 17:44:42 ---O.k My cats have had it they are getting nosier by the day. I want to cut them out. Can I just cut streight through the exhaust pipe either side of the cats and replace with a straight bit of pipe slightly bigger that the external diameter of the exhaust pipe slotting over and clamping? Do you need to remove the section of exhaust with the cats in to do this of can you do it in situ.
Happy new year!
--- End quote ---
Well I done mine by cutting out the cats one at a time make sure that the exhaust is bolted to the manifold when you put in the replacement pipe so that the flanges all meet up in the right place otherwise when you come to bolt it back together it won't fit right. Use a piece of pipe larger than the exhaust as a friend of mine thought it would be a better way to do it with the same size........................what a pain in the arse that was. I did the other side with a piece larger & it was l a lot easier.
Jonny Boaterboy:
--- Quote from: Reggieroo on January 05, 2009, 18:06:37 ---I did the other side with a piece larger & it was l a lot easier.
--- End quote ---
Ok that sounds good...... where do I find the pipe? Can't think of anywhere that would sell that sort of pipe can you give me a few pointers!
Tar
Range Rover Blues:
If you are binnning the cats Jonny then do as suggested above and fit a 3.9 pair of downpipes, they are slightly better gas flowed to give smoother running. Just cut the Lambda sensore out and weld it into the new pipe (well the nut for it).
Reggieroo:
--- Quote from: Jonny Boaterboy on January 05, 2009, 21:29:41 ---
--- Quote from: Reggieroo on January 05, 2009, 18:06:37 ---I did the other side with a piece larger & it was l a lot easier.
--- End quote ---
Ok that sounds good...... where do I find the pipe? Can't think of anywhere that would sell that sort of pipe can you give me a few pointers!
Tar
--- End quote ---
You will have to try & source that sort of thing locally as we did, my friend got the first bit of pipe that was the same diameter & I got a bit of stainless pipe that had the ends opened up to fit over, this I got form a local tyre & exhaust place that does performance exhausts.
Unless somebody on here has any floating about.
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