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Exhaust leak


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So my smokey saga continues! Just finished taking my entire exhaust off to put new heat wrap on my up-pipe as the old stuff had oil in it and causing smoke.

While doing this, I installed my prodrive sports cat downpipe and put everything together without much issue, I was a bit cheeky and reused my downpipe gasket which was brand new a month or so ago, so still looked brand new.

But obviously I have an exhaust leak, it is coming from the top between the two bolts. I've attached a pic and you can see that there is a visible gap, but I cannot tighten the bolts anymore.

Would a new gasket sort it out do you reckon or do you think I may have to use a little sealant to help, some threebond perhaps? (which I have)

 

14256250_10154143584713171_2077169044_n.jpg

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Sometimes you can get away with re using the turbo outlet gaskets but they're a "crush" type gasket and don't always reseal properly.

I used a bit of exhaust assembly paste once before just to see me through untill I got a new one but it's not recommended to use in pre cat locations.

Admittedly my catted downpipe was in the shed at the time [emoji23]

Did you nip the bolts up evenly ?

As you might be lucky enough to just undo the bolts a bit , support the downpipe (with a jack and a block of wood) to close the flanges together at the right angle and re tighten them .

Otherwise it's a new gasket, bud

If it's not broke .....upgrade it 😊

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Does new heat wrap smoke a bit during first use? I've re-wrapped my up-pipe as the old stuff was coated in oil and was quite smokey. Now I'm getting more smoke from the same area but a different smell as it's not oil anymore. I initially put it down as my slight exhaust leak but just got home and opened the bonnet and there is a decent bit of smoke coming up from the up-pipe

 

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It looks like it smokes (steams) for 10 mins after start up ,if it's raining or it gets wet .

I get some funny looks cos Mine has steam coming out of the scoop on rainy days [emoji33] [emoji23]

But I've wrapped the headers ,up pipe and top of the turbo downpipe [emoji6]

If it's not broke .....upgrade it 😊

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21 minutes ago, savage bulldogs said:

It looks like it smokes (steams) for 10 mins after start up ,if it's raining or it gets wet .

I get some funny looks cos Mine has steam coming out of the scoop on rainy days emoji33.pngemoji23.png

But I've wrapped the headers ,up pipe and top of the turbo downpipe emoji6.png

If it's not broke .....upgrade it 😊

Mine seems to do it after some motorway driving so the revs are highish (3k) consistently so the exhaust gets hot, so when i come to a stop it comes out of my scoop and the driver side of the bonnet... wasn't overly expensive stuff so will give it some time to bed in and see how it goes.

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Well... what I thought was going to be a 1-2 hour job turned into a 6 hour job... what a ball ache!

First issue was a new nut and bolt I put on with the new downpipe was stuck after a single turn, so it had some movement but the nut would not budge. After failing with the hack saw I gave in and took the dremel to it. Once it was off i tried to see what caused it, looked like part of the thread inside the nut broke and got stuck. 

Anyway, started getting everything else loosened off, moved onto the last nut on the downpipe and again, got it almost off then it just became stuck!! Gave it an almighty tug (that's what she said...) and then it came free.... not the nut,... the !Removed! stud.

Unfortunately I don't have a vice but i suspect it to be boogered... thankfully i had another bolt and nut that could be used in it's place.

So finally got it put all together at 8PM and no leaks!! Best feeling in the world... pure relief, especially since I was under pressure as my garage had a cancellation for their dyno for tomorrow afternoon and anyone who could fill it would get 15% off, so had to jump at that!

I now feel broken.... but excited for tomorrow

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27 minutes ago, savage bulldogs said:

Glad you got it sorted sandy emoji41.png

I guess you'll sleep well tonight knowing that you'll be on the dyno tomorrow emoji23.png

Best of luck with the best bang for buck mod (remap) and I hope you get the figures you're after bud emoji106.png

I'll post an update tomorrow! I'm hoping to get around the 270 mark... think i've done enough mods to get there!!

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210hp and 221ftlb at the wheels... boost is up at 1.3 bar now, only thing that was holding me back was the turbo and injectors, which was to be expected!

Drives really nice, mapped in some pops and bangs for me and variable boost depending on throttle position, not had a chance to drive it properly yet but a few 2nd gear pulls and the difference is certainly noticeable!! 

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