172 to 182 exhaust manifold

[Rob.h_172]

right thinking of changing my manifold to a 182 right here are the questions i no i need the 182 cat but will i need to do anythink else to my exhaust. Also will i notice the power difference and how many of you have done it


thanks

Rob

 

[Fred@BTM]

you need to chop down your existing centre section slightly and weld a flange onto the 182 CAT

loads of effort for hardly much gain

(i prefer the 172 manifold anyway!)

 

[Rob.h_172]

oh should add my bro is a mechanic so cost is a crate of beer lol is it still worth it

 

[Fred@BTM]

he'll be cursing you when he fits it!

 

[Rob.h_172]

bloody hell that bad is there any good mechanical mods you can do then that wont break the bank??

 

[Fred@BTM]

not really LOL

 

[foxon]

i`ve done it on me 172 cup, not really made much of a difference n cost a small fortune to fit!! but havin ITB`s fit at mo so should hopefully produce better airflow wiv the throttle boddies.

ur`s is a 172?? surely u wud be better gettin a d-cat pipe from k-tec which will allow u 2 fit a 182 manifold to a 172 exhaust cause thats what i hav, surely fitting a 182 cat won`t fit the normal 172 exhaust or uprated exhaust (unless you r gettin a 182 exhaust obviously) well thats the impression i got when i ordered mine. fred??

 

[kully]

182 manifold will need a link pipe for the decat , or you can buy the sports cat which fits straight on and goes to any 172 exhaust system .

you get more lower down power grunt with the manifold upgrade .

 

[jph172]

Ive done it and personally i think its definately worth it. I noticed the pick up straight away especially mid range. Alot more torquy as well. Obviously it leaves you exposed as theres no longer a cat on ur car. Id had some port&polishing done beforehand so whether that had an impact on the difference?
I spoke to Andy@GDI about it&he said he,d done a few cars&they,d sen no improvements where as some did.
Id say Go for it rob!

 

[kully]

even better if you can pick one up cheap .

 

[manicmonkey]

i got the decat section if ur interested (182 manifold to 172 exhaust) £80

 

[kully]

dont you need the a link pipe with the decat ?

 

[Fred@BTM]

link pipe is the decat!

 

[kully]

link pipe is the decat!

i was under the impression you need a link pipe with the decat for the 182 manifold to fit onto the 172 exhaust ....oh hum

 

[manicmonkey]

between the 182 manifold and the 172 exhaust centre section is one pipe, whatever you want to call it... link pipe or decat

 

[Martin_172]

afaik you want a 4-2-1 for low down torque and 4-1 for top end power?

 

[kully]

The 182 manifold upgrade , as well as the inlet work , is where the 182 gets the majority of the 10bhp increase from the 172 .

 

[drhowser]

mine definately seemed more torquey after i had this done, but for mine they shortened the original cat. i dont know what it was like before, but now the flanges are straight on to the cat itself. i'm in france this week but i can get some pics when i'm back if it will help?

 

[foxon]

link pipe is the decat!

i was under the impression you need a link pipe with the decat for the 182 manifold to fit onto the 172 exhaust ....oh hum

as i said lol," ur`s is a 172?? surely u wud be better gettin a d-cat pipe from k-tec which will allow u 2 fit a 182 manifold to a 172 exhaust cause thats what i hav, surely fitting a 182 cat won`t fit the normal 172 exhaust or uprated exhaust (unless you r gettin a 182 exhaust obviously) well thats the impression i got when i ordered mine."

 

[Fred@BTM]

you can make a 182 cat fit, but it need moddifying along with the centre section

 

[foxon]

not worth it when you can buy a 182-172 exhaust d-cat for £100

 

[manicmonkey]

not worth it when you can buy a 182-172 exhaust d-cat for £100

£110 off k-tec or £80 off me!

 

[Rob.h_172]

im getting the manifold of a 182 as well but would like to have a 182 cat would i still have to extend the pipe to my old exhaust ??

 

[Rob.h_172]

or will it all jst fit i hope

 

[Fred@BTM]

you'll have to shorten your existing 172 centre section

 

[Rob.h_172]

bugger think your de4f right prob best just leaving it all mmm time to look some were else then i think may be my cams??

 

[Fredy]

I ve put 182 exhaust manifold on existing decat system and the difference is noticable especially 2800 - 5000 rpm! Top end power increased by 4bhp!

Also manifold is now termo isolated and that increases the ex gases speed and also lowers engine bay temp.

Give it a go, you will like it!

Dyno - http://www.youtube.com/watch?v=5Gc_fF5aEcs