19 replies to this topic

[minidude03]

can i fit this catalyst system exhuast without changing the standard manifold

3" Catalyst System

[minidude03]

please, can anyone answer this, becos i need to order an exhaust, before mine falls off

[16vminiman]

what you will need will be the exhaust you mentioned, which should be the same as this one (but bigger bore - this a 2")


2" bore

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[16vminiman]

.....then you need this link pipe, which fits into the end of the silencer section (previous one), and this then bolts to your cat.


link pipe

don't forget a new gasket, and exhaust hanging rubbers(if you don't already have them)

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[16vminiman]

..then if you want to eliminate the cat (refitting it for mots - of course.... :tongue: :tongue: ), then you need this cat removal pipe.....al this is done without touching the existing manifiold.


Cat pipe


I did the same thing on my cooper sportspack, just replaced the cat and silencer with a s/s jobbie, i've i can do it in about 1.5 hours now (old crusty thing off, new shiny exhaust on), i've done it about 3 times.

by the way, if this is your first exhaust removal, you will(!!) need an angle grinder, as the cat bolts get extremely hot, and weld themselves together with the heat and rust, and you'll probably have to cut them off!! then just drill out the bolts, and slot in new ones when you refit it!

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[minidude03]

the 3 inch system allready has the link pipe as part of the backbox

[minidude03]

will i still need the hangin rubbers for a centre exit exhaust.

[Jordie]

to fit to a standard manifold u can buy a

Manifold to RC40 neck pipe from minispares.

this changes the standard manifold into a 1.75" pipe, slot in your link pipe and woteva and build woteva system u like from there backwards.

I have,


The neck pipe, into a stainless straight thru pipe, into a centre exit backbox with 2 1/4" exit.

[16vminiman]

are you sure, because normally they dont supply the cat link pipe as part of the kit??

if they do, thats cool, you just need to bolt the system to your cat.

easy way to check is to see if it ends with a large flange with 2 bolt holes (this bolts onto the cat - the same as on each end of the cat replacer pipe in the picture), if so, then thats all you need!! :grin: :grin:

[minidude03]

i dont want a straight thru pipe, i want to keep my cat
i would like this type of set up if possible
Catalyst system exhaust --> Link pipe --> Cat --> standard downpipe

is this possible of would i need a 3 branch manifold

[minidude03]

take a look at MWS in any mini mag, and look at the pic of the 3" cat system, it looks like it comes with pipe. but mite just be the foto

[Jordie]

Right u have the choice of,

Manifold to RC40 neck > link pipe to cat > *insert cat* > backbox of choice

OR

3 Branch LCB manifold > link pipe to cat > *insert cat* > backbox of choice

If i am thinking correctly.

[minidude03]

Manifold to RC40 neck > link pipe to cat > *insert cat* > backbox of choice

how come u need the RC40 neck

[16vminiman]

jordie - this will work, but only on non-catlyst cars.

for cat-equipped cars (where you want/need to keep the cat), you need what i've suggested, below is a quick piccy to help, this is veiwed from above. you need the the back box,and link pipe thats all

if you're going for a centre mount, you still need the same pipes, but you'll need to drill into the subframe crossmemeber at the back, and have just 1 exhaust hangar.


and no you don't need a new manifold.

Hope this helps!!!!!!!

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[minidude03]

thanks alot mate, that saves me buying a new manifold