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Fitting a 182 manifold to a 172



Andyk1801

Andyk1801

  Astra (H) VXR
Right engine is out of the 172 and I have acquired a 182 manifold..

The 172 had a decat pipe...

Will I need to modify that to fit the manifold or will it be a straight swap?

It won't be going on till late evening tomorrow so wanted to check if I'm gonna be taking the car straight to the closest exhaust specialist.

Cheers
 
Andyk1801

Andyk1801

  Astra (H) VXR
Cheers lads..

Straight to the exhaust garage then to get them to modify the existing one..

I say it's a decat pipe but basically when I replaced the exhaust I took the cat out and scrapped it as it was fooked so will prob just need the pipe shortening?
 
J

-J-

  RS2'ed 172 Cup
Will be a simple job for someone with a tape measure and a welder.

Should just be able to cut your old pipe down and weld the flange back on.
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
Its a much nicer layout of manifold and cat but quite a lot of work.
I did it only cause head was off anyway so made it trivial.
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
No brainer for you in that situation, I'd personally never refit an F4R with a 172 manifold on it if I had a 182 one handy.
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
Andyk1801 said:
From driving a 182 compared to my 172 they seem a little smoother through the lower rev range.
Click to expand...

I think the standard map is a little better, the moment you are going to RS Tuner them both or any other type of decent remap then you wont notice that lack of smoothness so much on the 172 anymore, and anyone who has one of these cars on the standard map for long is a bit of a wally IMHO!
 
M

madcarl27

  Clio 172 Phase 2
On parkers website. Says 172 is 172bhp and 182 is 182 Bhp. Are they the same Bhp in reality they. Parkers also says that 182 0 to 60 is 6.9. Surely it's faster than that.
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
madcarl27 said:
On parkers website. Says 172 is 172bhp and 182 is 182 Bhp. Are they the same Bhp in reality they. Parkers also says that 182 0 to 60 is 6.9. Surely it's faster than that.
Click to expand...

Parkers guide is wrong then.

The 182 makes slightly more power, I believe (but havent scientifically tested) this is partly due to a better standard map and partly to the better manifold, but its not 10bhp.
 
M

madcarl27

  Clio 172 Phase 2
Chip-mk1 said:
Parkers guide is wrong then.

The 182 makes slightly more power, I believe (but havent scientifically tested) this is partly due to a better standard map and partly to the better manifold, but its not 10bhp.
Click to expand...

Ok fair 1. Thanks for info. Now I can an tell my bro who has a 182 to stop gobbing off at me lol. What bout the later clios 197 etc ?
 
M

Mr R.

ClioSport Club Member
  A special one.
Thats the only thing it can be chip, but as you say not 10 bhp more.

The ph1 has a better head, combined with a re map and 182 manifold should be even better.

Although the ph1 inlet manifold is smaller than the RS one.
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
Yes I forgot the inlet, thats a slight improvement too.

I dont believe a Ph1 head is better on the standard car though, I think the exhaust ports are too large and this effects low rpm torque slightly.
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
madcarl27 said:
Ok fair 1. Thanks for info. Now I can an tell my bro who has a 182 to stop gobbing off at me lol. What bout the later clios 197 etc ?
Click to expand...

197 make far more power than a 172/182 as they are quite dramatically different engine specs, rather than the 172 and 182 where all the really key components are the same anyway.

197 have wilder cams, higher compression, larger bore inlet, larger inlet ports, and more variance on the dephasor pulley.
 
M

madcarl27

  Clio 172 Phase 2
Are the 197 noticeable quicker when driving them. Never see one give it or been in 1 ? Might have to up grade if they quite abit quicker
 
S

S-Fell-89

  Renault Clio 1.2 TCe
yeah stay with 172, id have either 172 or 182 as i have driven plenty, also driven plenty of 197s and theyre a good car, bit more comfortable but dont feel as lively or happy to drive and when front suspension swivel points go they aint cheap! or that easy to replace in comparison with MK2s
 
ed55j

ed55j

  172 Cup
I have just put the 182 exhaust manifold on my 172 and its made a considerable difference imo, a worthwhile mod for any 172 (not the easiest) but still worth it for the gains. I went from a 182 trophy to a 172 cup, i thought the cup just felt slightly sluggish compared to the 182, but now with the far superior 182 manifold design it feels just as quick now if not slightly more than my old 182.
 
N

Nickwillyhams

  RS Clio 172 Cup
Chip-mk1 said:
Tiny increase in torque, and makes the cat/decat far easier to get to.
Click to expand...


So a 182 exhaust manifold, combined with a stainless exhaust (which is next on the list (btb I'm thinking)) I should notice a difference? Just trying to weight it up and decide if i can be bothered with the manifold job.
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
ed55j said:
I have just put the 182 exhaust manifold on my 172 and its made a considerable difference imo, a worthwhile mod for any 172 (not the easiest) but still worth it for the gains. I went from a 182 trophy to a 172 cup, i thought the cup just felt slightly sluggish compared to the 182, but now with the far superior 182 manifold design it feels just as quick now if not slightly more than my old 182.
Click to expand...

For it to have made a "considerable difference" you must have had a problem with your 172 one, such as maybe a blocked catalyst for example (as obviously you will have changed the cat as well as the manifold.
A good working order 172 setup is only very slightly inferior to a good working order 182 setup. You'll need a rolling road or a wideband at least to spot the difference, not just driving it as its too slight.
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
Nickwillyhams said:
So a 182 exhaust manifold, combined with a stainless exhaust (which is next on the list (btb I'm thinking)) I should notice a difference? Just trying to weight it up and decide if i can be bothered with the manifold job.
Click to expand...

If you are racing and even a couple of lbft is therefore important then yes, if its a road car then unless you would enjoy doing the work then no, the difference is very slight, although it does give the bonus of making it easier to swap a cat in and out if you wish.
 
M

Mr R.

ClioSport Club Member
  A special one.
Its worth while as chip says if you can do the work yourself, if you had to pay someone then its going to be expensive.

Its also worth doing id say if you where going to do other mods like cams and TB.
 
N

Nickwillyhams

  RS Clio 172 Cup
Think il just go for the exhaust and leave the manifold as its my daily and all original. Can't really justify the work in all fairness
Thanks for the advice
 
C

Chip-mk1

  182/RS2/ Turbo/Mk1
madcarl27 said:
How hard is it to decat a 172 then ?
Click to expand...

Its just a pain in the arse cause 2 of the bolts are quite hard to get to in the bay and are quite often rotten.

Its not complicated or anything, just easy to round the bolts off and make it a pain in the arse.
 
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