Cat Replacement Pipe
- The_Rossatron
- Posts: 1844
- Joined: Sun Jul 10, 2005 8:14 pm
- Location: Edinburgh, Scotland
- Contact:
Cat Replacement Pipe
I'm actually going the opposite direction that most people go - I bought my car with a CRP and want to stick the cat back on for the MOT - also I think I'll keep it on as the combination of the exhaust/induction kit and the pipe is doing my head in slightly for a daily driver.
Also find it hard to drive briskly and discretely at the same time!
Question was do you need to buy that gasket set everytime you change the thing? Also I have an MIL light eliminator - do I just keep it attached or should there be a sensor taped up to plub into the bad boy?
edit: sorry this should really be in the technical forum - my bad!
Also find it hard to drive briskly and discretely at the same time!
Question was do you need to buy that gasket set everytime you change the thing? Also I have an MIL light eliminator - do I just keep it attached or should there be a sensor taped up to plub into the bad boy?
edit: sorry this should really be in the technical forum - my bad!
Re: Cat Replacement Pipe
It is nowThe_Rossatron wrote:edit: sorry this should really be in the technical forum - my bad!

S2?
Must be if your talking about MIL's.
1st things first - gasket cost pennies so makes sense to change it.
2nd - you'll need to install your post cat lambda and unless you have a tuned head that will turn the MIL off. If you don't have a post cat lambda (and you should) you'll need to keep the MIL eliminator and block the hole in the cat with a suitable bung (old spark plug is ideal for this task)
Cheers
Mac
Must be if your talking about MIL's.
1st things first - gasket cost pennies so makes sense to change it.
2nd - you'll need to install your post cat lambda and unless you have a tuned head that will turn the MIL off. If you don't have a post cat lambda (and you should) you'll need to keep the MIL eliminator and block the hole in the cat with a suitable bung (old spark plug is ideal for this task)
Cheers
Mac
- The_Rossatron
- Posts: 1844
- Joined: Sun Jul 10, 2005 8:14 pm
- Location: Edinburgh, Scotland
- Contact:
Eliseparts do this: Full Stainless Steel Exhaust Fitting Kit £ 16.39inc which looks like it has the right parts - a gasket on either side of the pipe/cat.
I do have an S2, would the car fail its MOT with a sparkplug in the cat?
I'm sure the guy before me has just taped the sensor back and I'll hopefully find it somewhere
I do have an S2, would the car fail its MOT with a sparkplug in the cat?

Not unless you plumbed in an injector next to it, wired it up and left it running during the MOT....The_Rossatron wrote:
I do have an S2, would the car fail its MOT with a sparkplug in the cat?![]()
</Fast & Furious posse>
2010 Honda VFR1200F
1990 Honda VFR400 NC30
2000 Honda VTR1000 SP1
2000 Kawasaki ZX-7R
1990 Honda VFR400 NC30
2000 Honda VTR1000 SP1
2000 Kawasaki ZX-7R
Don't know about S2, but for S1 I went to a rover dealer and got 1 gasket and 2 rubber mounts for less then £4 (MGF Parts) then find a nut and bolt seller for your bolts. Try under bolt and nut on yell.com much cheaper I got 4 ss nuts, bolts and washers for £1. Bit more faff but much cheaper (And no postage!)The_Rossatron wrote:Eliseparts do this: Full Stainless Steel Exhaust Fitting Kit £ 16.39inc which looks like it has the right parts - a gasket on either side of the pipe/cat.
/pikey
My 2p
HTH
Rich
1994 Lotus Esprit S4 - Work in progress
1980 Porsche 924 Turbo - Funky Interior Spec
2004 Smart Roadster Coupe - Hers
1980 Porsche 924 Turbo - Funky Interior Spec
2004 Smart Roadster Coupe - Hers
Rich
Nail<->head
Geary's got some fantastic stuff and his engineering standards can't be faulted. He can pop in the odd comedy price for mundane stuff though...
Rover dealer for gaskets (assuming they are the same MGF bits for the S2) and http://www.namrick.co.uk/ is a good bet for bolts.
Nail<->head
Geary's got some fantastic stuff and his engineering standards can't be faulted. He can pop in the odd comedy price for mundane stuff though...

Rover dealer for gaskets (assuming they are the same MGF bits for the S2) and http://www.namrick.co.uk/ is a good bet for bolts.
2010 Honda VFR1200F
1990 Honda VFR400 NC30
2000 Honda VTR1000 SP1
2000 Kawasaki ZX-7R
1990 Honda VFR400 NC30
2000 Honda VTR1000 SP1
2000 Kawasaki ZX-7R
- The_Rossatron
- Posts: 1844
- Joined: Sun Jul 10, 2005 8:14 pm
- Location: Edinburgh, Scotland
- Contact:
Cheers for the help guys had already ordered those overpriced gaskets and bolts. 
Have to say it was the most straightforward swap I've ever experienced - no hacksawing bits off or blowtorching stuff. Those undertrays do keep everything relatively protected from the elements.
Car is about 10 times quieter now! Just have to take it for a proper drive to see if it's toooo quiet. If not I might have a spare S2 flexible CRP which has covered just 3000 miles for sale.
Also didn't expect the CRP to have the sensor screwed into it! So just screwed it into the cat - where exactly does the MIL eliminator go?

Have to say it was the most straightforward swap I've ever experienced - no hacksawing bits off or blowtorching stuff. Those undertrays do keep everything relatively protected from the elements.
Car is about 10 times quieter now! Just have to take it for a proper drive to see if it's toooo quiet. If not I might have a spare S2 flexible CRP which has covered just 3000 miles for sale.
Also didn't expect the CRP to have the sensor screwed into it! So just screwed it into the cat - where exactly does the MIL eliminator go?
