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Author Topic: Passenger Exhaust Manifold Gasket  (Read 1101 times)

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Manual Elite V6

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Passenger Exhaust Manifold Gasket
« on: 16 October 2012, 21:25:40 »

Does anyone know a rough time for removing the passenger exhaust manifold gasket, suspect either a gasket a cracked manifold as it came so suddenly but it also seems to have quietened down significantly in such a short period also which is strange as the engine was cold when started to look again, I also took it for a drive to warm it up and it is still much quieter, a, going to investigate further tomorrow in the light but would just like to know a rough time if I removed the drivers engine mount and undid the passenger mount to swing engine over.

Thanks
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1992 Cavalier GSi
2007 Astra Sri+ CDTi 150

spanish_lad

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Re: Passenger Exhaust Manifold Gasket
« Reply #1 on: 16 October 2012, 22:08:35 »

im doing the same job right now.

theres a few bits to take off, its got near to no access (im working on the floor, no ramp). ive wrecked my manifold heatsheilds because the bolts were rusty, so order those first.

my problem was a broken stud at the rear.

take out battery, power steering resovoir, bonnet alarm doodah. undo bastard bolt and take out dipstick tube. remove downpipe, drop oil and remove oil filter (makes it easier).

undo bolts, try to get the heatsheilds off but they are normally rusty. smash them off.

7 bolts on the manifold, three top ones from the top, front bottom one from the top with a "bent" spanner, rear three bottom ones from underneath. i used a 3/4 breaker bar and 6 point socket and got them all out easily.

good luck, its a "big" job, its gonna take you a good 10 hours working alone.

the stuff you need -

studs, nuts, manifold gasket, downpipe gasket, nuts/bolts to refit the middle 2nd to the 3rd section of exaust, new nuts for the downpipe.

iŽll get the part numbers in a sec, it all cost me 60 quid.
« Last Edit: 16 October 2012, 22:11:13 by spanish_lad »
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if i hear "its dealer only" one more time im gonna set fire to the mig :p

spanish_lad

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Re: Passenger Exhaust Manifold Gasket
« Reply #2 on: 16 October 2012, 22:30:55 »

but ive just seen that you are a jag mechanic, so iŽll revise that to 6-7 hours. if you know your tools, you know what you are doing on a v6.


i dont, i just fix our cars to stay on the road.
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if i hear "its dealer only" one more time im gonna set fire to the mig :p

Manual Elite V6

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Re: Passenger Exhaust Manifold Gasket
« Reply #3 on: 16 October 2012, 22:52:42 »

Thanks for your reply, already knew what was involved so basically just after a time, after going out for a drive again I've come to suspect downpipe gaskets and the sound resonating around the manifold area and under the car as originally the sound was only passenger side and now I'm getting a blowing noise under car on the driverside towards the downpipe end, this manifold gasket was only recently replaced and I know its still not blowing, I fitted new downpipe gaskets when I changed my clutch not that long ago and now the blowing is heared on both sides it sort of makes sense, I will get downpipe off again tomorrow and check for signs of blowing, hopefully its just crappy downpipe gaskets.
« Last Edit: 16 October 2012, 23:02:39 by Manual Elite V6 »
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spanish_lad

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Re: Passenger Exhaust Manifold Gasket
« Reply #4 on: 16 October 2012, 23:08:10 »

they are only 5,46 from Vx i believe?
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if i hear "its dealer only" one more time im gonna set fire to the mig :p

Manual Elite V6

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Re: Passenger Exhaust Manifold Gasket
« Reply #5 on: 16 October 2012, 23:09:27 »

they are only 5,46 from Vx i believe?

Can't remember price but not expensive and a few minutes work to change, so I'll start by checking those and if at fault will buy some more.
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1992 Cavalier GSi
2007 Astra Sri+ CDTi 150

Manual Elite V6

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Re: Passenger Exhaust Manifold Gasket
« Reply #6 on: 17 October 2012, 17:53:26 »

Problem fixed, decided to order 2 downpipe gaskets while in work today, to my suprise the downpipe gasket on the passenger side had already failed, I only changed them in August.
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1992 Cavalier GSi
2007 Astra Sri+ CDTi 150
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