Fitting A Cat Back Exhaust,

[RBFIRE]

Hi all,

I just got my 2nd exhaust from SAU member,

http://www.skylinesaustralia.com/forums/in...topic=99905&hl=

can some 1 tell me wat is the pipe that look similar as a CAT?

isit a CAT?

or just a odd pipe? wat isit?

thanks,

and i am thinking of instal it myself,

wat is the tool require?

such as 6 new bolts,

wat kinda bolts to buy?

and Do i need exhaust gasket?

and wat kind of gasket?

and anything else such as silicone, and wat type?

i just wana make sure i do it right,

can some 1 please give me advices,

thank you,

cheers,

darrien

[sidewazegtst]

Hey man what's up.

Ok that pipe is a test pipe NOT a cat. All it does is fill the gap left by the cat so basically you have a nice straight through system. Just be aware that you most likely won't pass any emission tests (if you have that where you are) so I'd suggest keeping your stock set up or at the very least a good stock cat.

What you need is either liquid exhaust gasket or regular metal exhaust gaskets, do not use silicone, and also hardened bolts and nuts. I'm not sure how it works in Austrailia but here in Canada the higher the number on the bolt, the stronger it is. So just get the strongest bolts you can. Also a couple of jack stands to help support the system untill it's bolted in to place and I'd suggest either a regular air impact or cordless impact gun to secure the bolts.

So that's about it, should'nt take you to long depending on how hard it is to remove your old system.

Good luck with it.

Take care.

Cheers B)

[RBFIRE]

Thanks for the advise,

Not legal?

uh oh,

do u really need impact gun to tighten the bolts?

can i just use man made muscle gun :lol: to tighten it?

as long as it realy tight is ok?

coz i dun have acces to air gun or impact gun.

gona get it fit this weekend, just gona need so bolts and gasket.

thanks heaps for the advices man,

cheers,

darrien

[sidewazegtst]

As for the test pipe not being legal, well I don't know all your laws with regards to cat's being on cars or emissions rules either. I do know here test pipe's are not allowed and with no cat, there's no way in hell a car would pass the etest.

Well you don't "have" to have an impact gun but it's the best. If you do wrench them down yourself just get it as tight as possible so you don't have any exhaust leaks. Impact guns just ensure that won't be an issue, that's all.

Other then that, ya your good to go mate.

Let me know how it all works out.

Cheers B)

Edited February 1, 2006 by sidewazegtst

[RBFIRE]

Thanks sidewazegtst,

I will give it a shot,

but yea, ofcoz i will have a CAT, the exhaust i got is from CAT back, for now, am retaining my stock CAT but later i will have a High flow 1.

hope its all go fine,

*finger cross*

cheers,

[predator]

That's other lump is just a resonator.. meant to quiet things down a bit. I think the catback there in the photo is setup for a cat at the end...I think it is - really depends on the length.

You will need 2x 3" exhaust gaskets (get from exhaust shop).. You'll need the other for when you replace the factory cat (which is only 2 1/4" -- a restriction)

You may not require gasket goop to get a good seal (although its probably an ok idea). You will also need 4x M8 x ~50mm high tensile bolts to secure it to the Cat.. Get them from Repco, Bunnings, etc. They are a brass colour.

You don't need a rattle gun. Just a good 1/2" socket and shifter, and a spanner on the other end to hold the nut.

I fitted my fuel exhaust system myself. Takes an hour or two. Probably less if you have a friend to prop it up for you.

[iced]

bashed out CATS, test pipe CATS, etc are very illegal.

i aint no tree hugging hippy but such CATS do absolutely no good for the enironment.

race track use only.

[RBFIRE]

Thanks for the advices Predator,

ICE: is that a resonator as PREDATOR said or isit a test pipe?

if it is a resonator,

then its good, as it quite down, not as bad right?

[RBFIRE]

"4x M8 x ~50mm high tensile bolts"

hehe,

very specific details,

wonderfull,

thanks heaps man,

cheers,

[RBFIRE]

Exhaust fitted, nice and fitted great, simple job

Thanks for all ur helps guys.

very easy, i spray a bit of WD 40 and wait for 20 mins

after that, the bolts are easy.

took me 60 mins to drive around geting bolts and gasket,

and 45 mins to remove the old system and put in the 3 inc .

Cheers.

darrien

[JCskyline]

"4x M8 x ~50mm high tensile bolts"

2x 3" exhaust gaskets

i wana fit a 3inch catback exhaust on my r34 gtt sedan. do i used the same bolts or bigger/ smaller ones? thnx