Replacing an Exhaust Manifold, Cat and Exhaust System

[Impuzzable]

A previous owner of my latest 172, has fitted a 182 Exhaust manifold and I would like to change it back. I have sourced a 172 manifold and original cat and have a new cat back exhaust system arriving any day. I also have the genuine Renault Cat/exhaust fitting kits and exhaust manifold gasket etc.
Could someone with experience of swapping exhaust manifolds/cat give me an insight into how difficult this job might be? How best to go about it, what's involved etc. Also, If I asked a garage to complete the work, how much labour time would be fair.. what would be a fair price?? Any help appreciated.

 

[.Stevo.C.]

I wouldn't bother changing it over tbh.

 

[GeorgeH]

Why are you changing it back?

 

[Impuzzable]

Ideally I would like to restore the car to former glory, exactly as Renault intended. Also, before I realised it had a 182 manifold, I purchased 400Pounds worth of stainless steel, stealth, cat back exhaust for 172. I don't want a decat. Any other solution to fitting a cat and 172 exhaust to a 182 manifold???

 

[Impuzzable]

Hoping someone has some useful info to add

 

[Bunta]

get a link pipe and have a sport cat welded in, would have to be shorth though id have thought

 

[jamesycc]

the manifold wil be tricky because of where it is. Everything else is pretty straight forward. Depends how practically minded you are. I'd never done exhaust work before but recently replaced my centre section and refitted the cat. Fiddly but not difficult. Was a,little tricky lining the back box up again. The main issue is access if your on a driveway. For a garage I would've of that it'd be an hours work with all the tools to hand and ramps.

 

[marinemackay2003]

http://www.k-tecracing.com/show_product.asp?id=2336&appid=2

That is the easiest option by far

 

[T12]

http://www.k-tecracing.com/show_product.asp?id=2336&appid=2

That is the easiest option by far

I was just about to link this myself, you beat me to it! I have one fitted to mine, really was impressed when I had it fitted with Ktec 4-2-1 manifold and cat-back system. Would recommend but certainly isn't cheap if you go the full system.

 

[botfch]

Is the cat a double box or single?

Cheapest options probably to get a 182 cat second hand, have it sleeved (£50ish) then use your new exhaust.

 

[masekwm]

the manifold wil be tricky because of where it is. Everything else is pretty straight forward. Depends how practically minded you are. I'd never done exhaust work before but recently replaced my centre section and refitted the cat. Fiddly but not difficult. Was a,little tricky lining the back box up again. The main issue is access if your on a driveway. For a garage I would've of that it'd be an hours work with all the tools to hand and ramps.

To get the manifold off is a subframe off job.

I'd look to sell the exhaust myself

 

[Bluebeard]

Sell the exhaust, keep the 182 manifold.

The 172 manifold is a s**t design and makes working on the exhaust a monumental ball ache.

 

[Impuzzable]

http://www.k-tecracing.com/show_product.asp?id=2336&appid=2

That is the easiest option by far

I had already seen this item before posting and its the easiest option if you have money! This would of been my first choice, but having just purchased the car and Ktec stealth exhaust, its also booked in for Major service and Belts at a specialist (who was going to pop the exhaust on... if only it were that simple) need to find some more funds!

 

[Impuzzable]

Thanks for all the info.. from what you have all said, I'd be better off keeping the 182 manifold, add the sports cat and fit my 172 stealth exhaust. Just hoping Ktec have one in stock.