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22nd August 2016, 11:17 PM
#1
Expert
GQ TB42E cracks in engine pipe. Exhaust leaks. Ticking sound in engine.
Found a weird one - exhaust leak around manifold to engine pipe join. Thought it was a gasket, pulled the flange apart and sure enough - no gasket.
Re-fitted with a new gasket and WTF ? exhaust leak was worse. Definitely leaking around the flange.
Put a mirror and torch to check it out and spotted the flange welds cracked on the engine pipe.
Wondering how many others have struck this problem ? Could be the previous owner had the clutch replaced and the workshop did a rough job, especially considering the other parts damaged/not replaced properly and mounts not connected, but the welds on the genuine Nissan engine pipe were pretty so-so.
When I got it out and on the bench, the welds had cracked on the flange, the transition and the bottom bend. 20 minutes with a grinder and welder and all good again, but otherwise it would have been a new engine pipe. At least this one is now welded properly.
What a b!tch to remove. Sway bar, track rod, gearbox cross member all in the way. Everything rusted siezed (normal exhaust work) with tin heat/noise shields clipped on everywhere and bolts put in from the top when the chassis was bare and the body not yet fitted. ........C-MON !!
For anyone else, you can just get the engine pipe out if you remove the tin shields near the manifold flange, drop the suspension to full droop and remove the sway bar. Saves on removing the track rod and gearbox mount.
Hope this helps someone. - sorry, no pictures.
"Can't" is a dirty 4 letter word.
Best way to deal with a "Can't" is to chop off the "t" and brew it in boiled water for a few minutes.
Sip on the "t", and consider what you've got left to work with
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The Following 2 Users Say Thank You to Arfa Brayne For This Useful Post:
threedogs (14th September 2016), Touses (23rd August 2016)
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22nd August 2016 11:17 PM
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Circuit advertisement
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23rd August 2016, 04:42 PM
#2
Expert
yep common for the engine pipe to crack at the flange, most treat it as an excuse to fit extractors
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The Following User Says Thank You to billyj For This Useful Post:
Arfa Brayne (23rd August 2016)
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13th September 2016, 01:17 PM
#3
I have had ot happen a couple of times.
I had a flexi joint fitted just after the flange of the y piay it has not played up since
Last edited by GQ TANK; 13th September 2016 at 01:31 PM.
1991 GQ LWB 4.2 Carby dual fuel, 32 mud claws, 2 inch lift, LSD's front and back
And its Toooooooo High for the Ball & chain
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The Following User Says Thank You to GQ TANK For This Useful Post:
Arfa Brayne (13th September 2016)
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13th September 2016, 11:38 PM
#4
Legendary
Originally Posted by
GQ TANK
I have had ot happen a couple of times.
I had a flexi joint fitted just after the flange of the y piay it has not played up since
Any chance of a picture or a link to those flexi joints mate?
Or a picture of the flexi joint you fitted would be great.
Thanx
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14th September 2016, 01:26 PM
#5
Patrol God
I have 1mtr of 76mm SS flexi pipe here if any one has a need
I can cut in 200mm sections. will need to be fully welded
@Arfa Brayne start saving for a set of extractors you will
acheive great gains from that and a 2.5 system,, lol
04 ST 3lt auto, not enough Mods to keep me happy, but getting there
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The Following User Says Thank You to threedogs For This Useful Post:
dom14 (14th September 2016)
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14th September 2016, 09:43 PM
#6
Extractors are an easy option, but I have heard from more than one person that the extra heat radiated from the extractors had caused the failure of the aux battery. If you have an aux battery and get extractors, maybe get a battery box or insulating cover?
WARNING: Using a Tow Ball on any Snatch can KILL PEOPLE!
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14th September 2016, 11:00 PM
#7
Legendary
Originally Posted by
JME_GU
Extractors are an easy option, but I have heard from more than one person that the extra heat radiated from the extractors had caused the failure of the aux battery. If you have an aux battery and get extractors, maybe get a battery box or insulating cover?
Yeah, a battery insulating cover is a good idea regardless of whether you have extractors or not, 'cos in outback temperatures the under bonnet space can get pretty damn hot. I'm planing to make my own using thin pieces of styrofoam, so it will double as a "shockabsorber" for the battery as well.
BTW, you can buy those heat wraps from fleabay and wrap the extractors to contain as much heat as possible inside the extractors.
I don't have extractors yet, but I bought a reel of those heat wraps anyway, 'cos I removed the shield that covers the factory exhaust manifold and I couldn't find it.
http://www.ebay.com.au/itm/Exhaust-W...4AAOSwdrRXGIoY
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14th September 2016, 11:02 PM
#8
If You are worried about extra heat from the extractors then get some heat wrap for the exhaust system. you only need to wrap the extractors only. It also helps in getting the exhaust from the engine quicker, before it starts to cool. Exhaust wrap is also so used by alot race cars.
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dom14 (14th September 2016)
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14th September 2016, 11:53 PM
#9
Legendary
Originally Posted by
threedogs
I have 1mtr of 76mm SS flexi pipe here if any one has a need
I can cut in 200mm sections. will need to be fully welded
@
Arfa Brayne start saving for a set of extractors you will
acheive great gains from that and a 2.5 system,, lol
Ok, cool. I thought we can buy them in desired lengths and they just come with clamp fitting to slide in and fit without having to weld.
I'm a bit lost here about how the flexi pipe manage the flexibility and airtightness while being able to weld it!
No argument it does, I just wonder how the flexi mesh manage that.
Last edited by dom14; 17th September 2016 at 12:30 AM.
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15th September 2016, 06:45 PM
#10
Expert
extractors wont hurt your aux battery, ive got a bloody turbo setup on my tb42e and the aux in the back corner of the engine bay and havent had an issue with my aux battery getting hot, but have melted a few rubber hoses and silicone joiners
Last edited by billyj; 15th September 2016 at 06:51 PM.
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The Following User Says Thank You to billyj For This Useful Post:
dom14 (15th September 2016)