Will My Aftermarket Cat Back Go Straight On?

[horrace]

Hey guys just a quick one, I just bought a second hand 3" cat back. Will it bolt staight up to the compliance cat my car has or will I have to wait till I do the front pipe and 3" cat. It's a C34 series 1 if that matters.

[ssshonky]

I am fairly sure the exhaust will need SOME form of modification.

Sometimes the flanges are not in the right orientation. ( ie might require rotation )

Your compliance cat is probably not 3 inch is it?

If I were you I would save the stuffing around and just do the whole lot in one go ( if you can afford it that is )

Hey guys just a quick one, I just bought a second hand 3" cat back. Will it bolt staight up to the compliance cat my car has or will I have to wait till I do the front pipe and 3" cat. It's a C34 series 1 if that matters.

[66yostagea]

When I put a JJ 3" bellmouth dump and a 3" X Force Cat on they fitted straight on, no mods. My 21/2" cat back had a 3"

flange. Just check your flanges first.

[ssshonky]

See thats weird , I think its a s1 thing! I fit the JJR dump and the orientation of the cat was off on the X axis as well as being " slightly downhill "

When I put a JJ 3" bellmouth dump and a 3" X Force Cat on they fitted straight on, no mods. My 21/2" cat back had a 3"

flange. Just check your flanges first.

[QWK32]

2, 2.5, 3 inch are all the same 2 bolt flange. I got a HKS cat back and it bolted up to the compliance cat with no issues.

[horrace]

Thanks for the replies fellas I hope it bolts straight up, I'm gonna give it a crack this arvo and post the results.

[kidafa]

if its come of the same series stag it'll be fine

[ssshonky]

thats a 3 beer minimum job.

[66yostagea]

thats a 3 beer minimum job.

Far out. Its gunner be a dry old day, unless they are Drwin Stubbies.

[horrace]

Well i got it on no worries, just had to hack the bumper a bit, i think i did a pretty good job! BTW it was a 2 beer job took 1 hour.

[ssshonky]

Note I said minimum

Far out. Its gunner be a dry old day, unless they are Drwin Stubbies.

[ssshonky]

Well i got it on no worries, just had to hack the bumper a bit, i think i did a pretty good job! BTW it was a 2 beer job took 1 hour.

Good Job man

I find that after the 2nd beer you can NOT find any tools !

[horrace]

haha yeah, it wasn't hard at all, im just not looking forward to putting JJR front pipe and cat on when i get them. getting the bolts off the back of the turbo doesn't look easy at all especially when you don't have little jap hands lol.

[ssshonky]

Been there , done that

I find that if you have the right tools it helps a lot. ie having deep sockets, extensions, ratchet spanners

I really dont like 1/2 inch stuff anymore- far too clunky.

haha yeah, it wasn't hard at all, im just not looking forward to putting JJR front pipe and cat on when i get them. getting the bolts off the back of the turbo doesn't look easy at all especially when you don't have little jap hands lol.

[66yostagea]

Been there , done that

I find that if you have the right tools it helps a lot. ie having deep sockets, extensions, ratchet spanners

I really dont like 1/2 inch stuff anymore- far too clunky.

[/quote

And you will need a metric allen key caus you cant get bolts in a couple of places.

[QWK32]

check the sizes, they are M8 size thread, mine where a 13mm spanner but i know sometimes car manufacturers will use a 12mm head. then head on down to supercheap or bunnings and buy a couple of the bargain bin cheepo $1 spanners of that size. they come in handy for cutting down into stubby spanners for those hard to get to bolts on the dump. p.s. i know you can buy stubby spanners but some times they aren't stubby enough lol. also its easier than struggling with ratchet sets or a longer spanner set that you paid a bit for and couldn't bring yourself to cut them down.

from memory the stock dump is easy to remove, but bolting up then new 3" bellmouth/split dump can be frustrating as some of the bolt heads come really close to the pipe, it makes it hard to get a ratchet on them, hence the cut down cheapo spanners..

[66yostagea]

With the JJ dump they give you the SS allen head bolts for use where there is no room for hex heads.

[66yostagea]

With the JJ dump they give you the SS allen head bolts for use where there is no room for hex heads.

[horrace]

that sounds good, i'll be ording one very soon along with the cat, just gotta decide between the x-force cat and the catco one, any one have an opinion on that?

[66yostagea]

that sounds good, i'll be ording one very soon along with the cat, just gotta decide between the x-force cat and the catco one, any one have an opinion on that?

I have an X Force Hi Flow. Suits me fine.

Dont forget to check for broken, missing, mannifold studs.