Fitting A Dump Pipe

[chef_stagea]

i gota just jap... was a bit of stuffin round but wasnt that bad, i left my heat sheild off aswell... not guna do any hard will it? just make my engin bay a little hotter if ne thing

[DaveB]

i gota just jap... was a bit of stuffin round but wasnt that bad, i left my heat sheild off aswell... not guna do any hard will it? just make my engin bay a little hotter if ne thing

I've got a 3" split dump on mine which doesn't have a mounting point for a heat shield. The guy who made it says it doesn't need a heat shield; apparently won't cook paint or melt aircon' drain pipe. I've run like that for a week now and I haven't noticed anything bad so far, just less ticking/heat noise when I turn the engine off which I put down to less cast iron in the system now

[webng]

Well I've just done mine, 3" Bellmouth front/dump from JJR. Wasn't too bad i suppose, would have been easier if I had someone to help though. Couple of tings that I'm a bit concerned about.

1. Boost definitely sounds louder (i.e. whistling sound) and comes on quicker too, but definitely higher pitch? Is that aright?

2. The O2 sensor couldn't tighten up all the way, it's tight but there is about 2 more turns to go all the way... i.e. the o ring is loose. Badly machined threads from the JJR dump pipe? Is this a problem, as it is tight anyway? I don't think there's any leakage.

3. I only managed to put back the main heat shield with 2 bolts out of 5. Nothing to tighten it too. It's secure. But the rest of the pipe doesnt have any heat shield/wrapping? Should it?

4. Only managed to put on 5 of the 6 bolts back to turbo, one of them just refused to catch. Others are on pretty tightly, will there be leaks?

Cheers.

Nick.

Edited January 9, 2009 by webng

[kidafa]

nick,

I wouldnt be to concerned about the higher pitch turbo spool sound as its now a stainless frontdump instead of the mild steel/steel one.

As for the 02 sensor aslong as its not leaking i cant see a problem at all.

Heat sheild shouldnt be a problem just check the hoses around the area for the first few weeks for any unecessry heat attack

which one of the 6 bolts couldnt you do up? im huessting if you looking from the top standing next to the front left wheel the 2nd one down from the top on the sie your standing on? its a prick! it wasnt tight when it was on adams and as you could tell by the gasket their were no leaks

[webng]

heya chris,

yeah that's what i was hoping.

It was the the middle closest to me that wouldn't do up. The weld is in the way i reckon.

I added a thin layer of exhaust cement so hopefully that would help.

love the spooling up sound now though

i just automatically assume the worst as i'm pretty rubbish when it comes to things like that!

nick,

I wouldnt be to concerned about the higher pitch turbo spool sound as its now a stainless frontdump instead of the mild steel/steel one.

As for the 02 sensor aslong as its not leaking i cant see a problem at all.

Heat sheild shouldnt be a problem just check the hoses around the area for the first few weeks for any unecessry heat attack

which one of the 6 bolts couldnt you do up? im huessting if you looking from the top standing next to the front left wheel the 2nd one down from the top on the sie your standing on? its a prick! it wasnt tight when it was on adams and as you could tell by the gasket their were no leaks

[DaveB]

Yeah I noticed a higher-pitch spool sound when I changed my dump pipe; I also had the turbo hiflowed at the same time (gcg) and it sounds different - not worn turbo squeal now, but spool noise. The stainless dump pipe is a fair bit thinner than the big cast jobbie that was there from the factory, and I think it lets out a fair bit more noise.

To get all the bolts done up on my turbo (I had the luxury of having the turbo off to begin with) I fitted it off the car, and dropped the turbo and dump pipe in together and just did up the two bolts on the dump pipe -> cat.

The studs/nuts they put on the turbo were pretty crap and a couple siezed and one stripped, so I replaced that one with an original bolt anyway.

Edited January 10, 2009 by DaveB

[Ryan180]

Hey guys,

I have just fitted a 3" dump and hi flow cat on my Stagea. Its definately louder than before. I also stripped one turbo bolt, i got 5 bolts on no worries but i think i am getting a leak.

Is there any risk running the car with a leak at the turbo/dump pipe mating surface??

Also where can i get some new turbo bolts for a stock turbo??

Thanks

[webng]

Is there an easy way to check if it's leaking between the flanges of dump and cat? Would there be a noticeable hissing sound when idling?

[M I K E]

^^^ nick, get a short length of garden hose and put one end to your ear. move the other end around the engine bay where you think a leak may be and if it's there, you'll hear it

[webng]

^^^ nick, get a short length of garden hose and put one end to your ear. move the other end around the engine bay where you think a leak may be and if it's there, you'll hear it

Cool, i'll try that. Don't need to rev the engine or anything?

[M I K E]

nope, just let it idle. you'll hear a leak if you have one