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| Should I replace my rusty manifolds? |
| Yes, the car is going to be much better with new |
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15% |
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| No, you won't really notice any difference |
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84% |
[ 16 ] |
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| Total Votes : 19 |
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APL911
Monza
Joined: 15 Aug 2017
Posts: 234
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 Posted: Fri Apr 13, 2018 1:15 pm Post subject: Rusty Manifold. Should I bother replacing
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Hi all
I am in the process of getting quotes to replace my heavily corroded exhaust manifolds.
The flanges are complety wrotten, and the fixings are in terrible shap.
My question is this. Should I bother? What is the worst that can happen if I just leave it? It's not blowing, and it's pretty solidly rusted in place.
I do like the idea of nice shiny new manifolds, but I'm not really sure what difference it will make and if it is worth the £1,000+ it is likley to cost.
What are your thoghts?
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MisterCorn
Zolder
Joined: 08 Jan 2011
Posts: 5749
Location: Nottingham, England
2004 Porsche 996 Turbo
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| Posted: Fri Apr 13, 2018 1:19 pm Post subject:
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I would wait until something needs doing on it. That is the plan with mine anyway.
MC
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INWB
Silverstone
Joined: 02 May 2016
Posts: 135
Location: Leicestershire
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| Posted: Fri Apr 13, 2018 1:26 pm Post subject:
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If your car is a keeper then you may want to bite the bullet.
My car is better after doing them. Used the Top Gear ones. The biggest bill was the labour and GCR took pity on me and only charged me the estimate (which was eye watering enough). Every bolt snapped.
So glad I did mine now. (resprayed the support brackets for the mufflers at the same time)
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2003 Manual 996 C4S Midnight Blue
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wasz
Indianapolis
Joined: 28 Dec 2012
Posts: 2301
1999 Porsche 996 Carrera 2
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wasz
Indianapolis
Joined: 28 Dec 2012
Posts: 2301
1999 Porsche 996 Carrera 2
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freshy
Trainee
Joined: 13 Oct 2016
Posts: 81
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| Posted: Fri Apr 13, 2018 2:21 pm Post subject:
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Mine doesn't look pretty, personally I'm leaving it alone until it starts to blow.
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2005 996 'C4S Plus' Cab Manual in Atlas Grey X51 + Rusty PSE
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Robertb
Long Beach
Joined: 01 Sep 2003
Posts: 6462
Location: South Oxfordshire
2002 Porsche 996 Carrera 4S
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| Posted: Fri Apr 13, 2018 2:47 pm Post subject:
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Plenty of other higher priority jobs on mine.
It can stay rusty until it actually starts blowing, or until the engine is out for some other major work (heaven forbid!)
_________________
"911- the guilt-free supercar"
Current: 2003 C4S Coupe, seal/black
Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
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g911omr
Monza
Joined: 29 Sep 2009
Posts: 175
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| Posted: Fri Apr 13, 2018 2:50 pm Post subject:
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If it were me, I'd leave them until they need doing. New ones do look smart though.
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alex yates
Donnington
Joined: 06 Mar 2014
Posts: 12772
Location: The Ribble Valley, Lancashire
2000 Porsche 996 Carrera 4
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| Posted: Fri Apr 13, 2018 3:23 pm Post subject: Re: Rusty Manifold. Should I bother replacing
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| APL911 wrote: | the £1,000+ it is likley to cost.
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Da fook!
Where you getting it done - Harrods?
Cost me £356 for parts and labour.
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2000 Manual 996 C4 Arctic Silver Convertible
Used daily....rain, sun or snow.
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Stoo.c
Silverstone
Joined: 07 Apr 2014
Posts: 125
Location: Hertfordshire
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| Posted: Fri Apr 13, 2018 3:29 pm Post subject:
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I'm guessing he's including the price of having his bolts all drilled out which can easily reach £500 so £1000 all in isn't far off of what one might expect.
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02 996 C4S
93 Skyline R33 GTS-t
91 CRX vtec turbo
01 986 Boxster S
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g911omr
Monza
Joined: 29 Sep 2009
Posts: 175
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| Posted: Fri Apr 13, 2018 3:41 pm Post subject:
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If all the studs come out in one piece then it isn't a challenging job.
I bet they don't though....
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sackerley
Silverstone
Joined: 16 Mar 2016
Posts: 102
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| Posted: Fri Apr 13, 2018 3:47 pm Post subject:
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I'd leave it. Mine are a mess and look terrible but I'm going to leave it until it really needs doing.
Far more things to spend the money on!
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1998 Artic Silver 996.1 - manual - carbon interior - Momo Protopito
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alex yates
Donnington
Joined: 06 Mar 2014
Posts: 12772
Location: The Ribble Valley, Lancashire
2000 Porsche 996 Carrera 4
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| Posted: Fri Apr 13, 2018 3:49 pm Post subject:
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| Stoo.c wrote: | | I'm guessing he's including the price of having his bolts all drilled out. |
So was I!
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2000 Manual 996 C4 Arctic Silver Convertible
Used daily....rain, sun or snow.
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arry
Hockenheim
Joined: 02 May 2015
Posts: 716
Location: South Essex
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| Posted: Fri Apr 13, 2018 6:48 pm Post subject:
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| freshy wrote: | | Mine doesn't look pretty, personally I'm leaving it alone until it starts to blow. |
Exactly how I've treated my wife for 13 years.
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2001 Lapis Blue 996 C2 Manual
2012 Orange KTM 990 SMT
2016 Marsh Grey Royal Enfield Bullet 500
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deMort
Reims
Joined: 21 Mar 2015
Posts: 4266
Location: Brighton
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| Posted: Fri Apr 13, 2018 6:53 pm Post subject:
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If there was an option for .. Good God Dont Touch It Unless You Have To ... then i would have voted for that !!
Its rusty .. it dont look pretty .. short of getting run over by the car or its on a ramp then whos going to notice .
I see shed loads of mainifolds in a poor condition .. i can count the number of times ive seen an exhaust leak from them on one hand !
They have to come off to do certain types of work .. they have to come off if you are modifiying the exhaust .. if none of these then dont bother .. probably plenty of other areas you could spend the money on .
Flange gaskets and bolts can be replaced .. thats not a problem as you dont need the mainifold off to do that .
Did i make my point  
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7pm - 9pm
At an Indy these days !
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APL911
Monza
Joined: 15 Aug 2017
Posts: 234
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| Posted: Fri Apr 13, 2018 7:00 pm Post subject:
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Thanks guys. Decision made!
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alex yates
Donnington
Joined: 06 Mar 2014
Posts: 12772
Location: The Ribble Valley, Lancashire
2000 Porsche 996 Carrera 4
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| Posted: Fri Apr 13, 2018 9:22 pm Post subject:
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Those manifold bolts are like ingrowing toe nails. The sooner it's addressed, the easier the pain. You're just ramping the bill up leaving it.
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2000 Manual 996 C4 Arctic Silver Convertible
Used daily....rain, sun or snow.
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INWB
Silverstone
Joined: 02 May 2016
Posts: 135
Location: Leicestershire
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| Posted: Sat Apr 14, 2018 7:22 pm Post subject:
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I have new manifolds (see above) but they have gone very dark - even look rusty! Is that normal????? I was expected the shiny manifolds to stay shiny
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2003 Manual 996 C4S Midnight Blue
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alex yates
Donnington
Joined: 06 Mar 2014
Posts: 12772
Location: The Ribble Valley, Lancashire
2000 Porsche 996 Carrera 4
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| Posted: Sat Apr 14, 2018 7:37 pm Post subject:
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The clue's in the name - Stainless, not Stainproof.
_________________
2000 Manual 996 C4 Arctic Silver Convertible
Used daily....rain, sun or snow.
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INWB
Silverstone
Joined: 02 May 2016
Posts: 135
Location: Leicestershire
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| Posted: Sat Apr 14, 2018 8:12 pm Post subject:
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| alex yates wrote: | | The clue's in the name - Stainless, not Stainproof. |
Thanks Alex.  I'm not that good with stuff like that. Can I get bolts that don't corrode? The new ones already have surface rust.
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2003 Manual 996 C4S Midnight Blue
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