Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Porsche Buyers Guides
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
991 : 2011- 23
997 : 2004- 84
996 : 1997-2005 46
993 : 1993-1998 5
964 : 1989-1993 2
Carrera 3.2 : 1983-1989 0
Carrera SC : 1977-1983 2
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 3
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 14
Cayman : 2005- 17
Cayenne : 2003- 7
Macan : 2014- 0
Panamera : 2009- 1
912-914-924-928-944-968 1
959 - CarreraGT - RaceCar 1
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [991] 2011-Current
Porsche 911 [991]
911 [997] 2004-Current
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
deMort
Zolder


Joined: 21 Mar 2015
Posts: 5341
Location: Brighton


PostPosted: Mon Oct 22, 2018 7:39 pm    Post subject: Corrosion issues to pipes , mentioning again. Reply with quote

Car in for a temp gauge failure .. its a tip , turned out to be the electric valve on the tip box that had failed .. over cooling basically .

Whilst on the ramp i saw coolant dripping out from the center part of the undertrays so removed and inspected .

Pipes in the center had rotted through in the brackets , had a look at the crossover pipes and they were heavily corroded and damp.

Started to replace these items .. rear pipes were also corroded , unable to save pipes over engine so im now dropping the engine / tip box ( more expensive ) to replace almost every coolant pipe.

Not a drop of acf 50 or waxoil on the car .. even the brake pipes are corrodeing badly ... ill not mention the chassis rust !

Moral is .. if they havent been coated in something then please get it done .. i dont care if its waxoil , acf 50 or even bitumen .. get it done or you will end up with a very large bill like this poor guy .

Public service Message ends .
_________________
Mechanic

7pm - 9pm
At an Indy these days !
 
  
View user's profile Send private message
   
SGH
Monza


Joined: 06 Jan 2018
Posts: 196
Location: East Sussex


PostPosted: Mon Oct 22, 2018 8:51 pm    Post subject: Reply with quote

My winter project is to remove under trays to clean and Dinitrol my 997 as I did the sills this year when I fitted new GTS sill trims. Thumb
_________________
Porsche 997.2 Carrera 4S - Carrara White / Cocoa
Defender 300Tdi 110 HCP - Keswick Green
Connect L2 Double Cab - Moondust Silver
Connect L1 - Moondust Silver
VW California Ocean 150PS DSG - Reflex Silver
 
  
View user's profile Send private message
   
Poker2009
Imola


Joined: 09 Sep 2009
Posts: 866
Location: London


PostPosted: Tue Oct 23, 2018 6:15 am    Post subject: Reply with quote

Who can do this sort of work (and properly)? Around London!
_________________
997.1 C2S, Black, Feb 2005: tiny IMS bearing, 60k miles, original engine.
 
  
View user's profile Send private message
   
deMort
Zolder


Joined: 21 Mar 2015
Posts: 5341
Location: Brighton


PostPosted: Tue Oct 23, 2018 6:36 pm    Post subject: Reply with quote

Im way to far south to be of use but i do tend to recomend 9 Exceillence as its the only garage ive had dealings with close to london .
_________________
Mechanic

7pm - 9pm
At an Indy these days !
 
  
View user's profile Send private message
   
rob_p
Österreich


Joined: 20 Oct 2013
Posts: 892
Location: Leicester


PostPosted: Tue Oct 23, 2018 7:33 pm    Post subject: Reply with quote

I find this all very frustrating.... mine went in for a major last week and I asked them to look under the trays and apply some waxoyl to all the weak points.
They just weren't interested - trays provide all the protection you need etc.
Don't worry they said, 997s are solid, not like the old cars....

Can anyone recommend someone in the East Midlands to do this job for me?
_________________
991 C2 (no mods, yet)
997.1 C2 (full Hartech rebuild, Ohlins coilovers, ducktail, plus some other bits)
Jeep Grand Cherokee WK2
Ex Audi A8 V8 4.2tdi (best all round car I will ever own?)
Ex Porsche Boxster 986
Ex Mazda MX5 mk1
Plus some other stuff that wasn't very interesting....
 
  
View user's profile Send private message
   
Poker2009
Imola


Joined: 09 Sep 2009
Posts: 866
Location: London


PostPosted: Tue Oct 23, 2018 7:40 pm    Post subject: Reply with quote

Demort - how much would this cost (approx.)?

Thanks
_________________
997.1 C2S, Black, Feb 2005: tiny IMS bearing, 60k miles, original engine.
 
  
View user's profile Send private message
   
deMort
Zolder


Joined: 21 Mar 2015
Posts: 5341
Location: Brighton


PostPosted: Tue Oct 23, 2018 7:48 pm    Post subject: Reply with quote

As a stand alone job i would guess at 1 hours labour charge .. that would include the " waxoil or what ever ".

A lot of indys do this reguardless on a major service ... but i am talking about spray what ever you can sort of job and not just a few pipes , so this would involve removeing all undertrays .

All i can say is .. its well worth it as im guessing the job im doing is £4 - 5k to replace pipes .. and im waxoiling them along with tip pipes , brake pipes chassis etc etc .

How solid a car is depends on where it lives .. im near the coast so these suffer badly .. but any car as it gets older will suffer .. all i can say is i havent done total coolant pipe replacements just once .. a/c .. brake pipes .. they all suffer in the end and its not a huge expense to try and prevent it .. hence this post .
_________________
Mechanic

7pm - 9pm
At an Indy these days !
 
  
View user's profile Send private message
   
MarkGolf
Montreal


Joined: 13 Nov 2012
Posts: 538
Location: S.London


PostPosted: Wed Oct 24, 2018 9:17 am    Post subject: Reply with quote

Great post!

Although I don't take mine out in the wet, I will now to this in order to future proof!

Thanks for the insight worship worship worship worship
_________________
Current fleet
My 964
My 997
2003 Boxster 2.7
1994 Eunos Roadster S Special Turbo 270bhp!
1991 Mercedes 500SL
1979 Mercedes 280e
1995 VW Golf VR6 3.0
 
  
View user's profile Send private message
   
PGD
Trainee


Joined: 18 Jul 2018
Posts: 75



PostPosted: Wed Oct 24, 2018 9:28 am    Post subject: Reply with quote

Excellent information as always! worship

Cars corrode, whatever the brand

I do wonder how long AC50 lasts. It looks amazing when it goes on, so that's good. I've covered everything on mine in the stuff, so I'll keep an eye on how well it lasts as it's a new product to me.

Some time ago, I read comparisons between various treatments like Waxoil, inc one guy who built Concours-quality cars did his own tests with salt water trays.. and the stuff from bilthamber always came out on top.

https://www.bilthamber.com/corrosion-protection-and-rust-treatments/dynax-ub
_________________
997.1 C2S
 
  
View user's profile Send private message
   
Robert SausageTrousers
Silverstone


Joined: 02 Apr 2018
Posts: 111



PostPosted: Wed Oct 24, 2018 9:36 am    Post subject: Reply with quote

This might be a silly question, but do you need to do anything to remove any salt etc that has accumulated prior to waxoiling (or whatever), or do you just apply it?
 
  
View user's profile Send private message
   
PGD
Trainee


Joined: 18 Jul 2018
Posts: 75



PostPosted: Wed Oct 24, 2018 9:44 am    Post subject: Reply with quote

Robert SausageTrousers wrote:
This might be a silly question, but do you need to do anything to remove any salt etc that has accumulated prior to waxoiling (or whatever), or do you just apply it?

I would do as much as you can to clean before applying anything. Like paint, it wont stick very well to dust or salt. On top of that, you don't really want to seal that salt in either.

Cleaning wise, I would consider snow foaming or Muck Off applied to the underside, then pressure wash it off (not too close with the high pressure jet) Then let it dry really well before coating
_________________
997.1 C2S
 
  
View user's profile Send private message
   
brownspeed
Silverstone


Joined: 09 Jun 2016
Posts: 127
Location: Gods favourite city-Manchester


PostPosted: Wed Oct 24, 2018 5:18 pm    Post subject: Reply with quote

Can any of you kind souls point me in the direction of sourcing replacement plastic hex nut which hold the undertrays on? once i have some of these- its out with the waxoyl and up on the ramps.
cheers.
_________________
2004 997.1 C2S (Hartech rebuilt)
2002 TVR Tamora 3.6
1990 Mini Cooper RSP

Abarth 595
 
  
View user's profile Send private message
   
Jackzi
Trainee


Joined: 30 Aug 2015
Posts: 61
Location: Sussex


PostPosted: Wed Oct 24, 2018 5:28 pm    Post subject: Reply with quote

That makes for sobering reading. And I can only confirm that the pipes on some cars can be a very weak point, having seen several that were very long gone on a few PPIs done over the last year.

Even the cars I've looked at that have lived life away from the sea seemed to be afflicted, especially if not garaged and sitting out on the street.

I know what the first thing is that I'll be doing once I get another one.
_________________
E39 530i
996 targa
 
  
View user's profile Send private message
   
deMort
Zolder


Joined: 21 Mar 2015
Posts: 5341
Location: Brighton


PostPosted: Wed Oct 24, 2018 6:10 pm    Post subject: Reply with quote

A few picts to show you what the cross over pipes look like and where i emptyed my first of 2 cans of waxoil .

Second can will be tomorrow Very Happy

You can see the pipes that require the engine out.
_________________
Mechanic

7pm - 9pm
At an Indy these days !
 



pipes 3.jpg
 Description:
 Filesize:  333.17 KB
 Viewed:  722 Time(s)

pipes 3.jpg



pipes 1.jpg
 Description:
 Filesize:  290.59 KB
 Viewed:  724 Time(s)

pipes 1.jpg



pipes.jpg
 Description:
 Filesize:  303.73 KB
 Viewed:  724 Time(s)

pipes.jpg



pipes 2.jpg
 Description:
 Filesize:  401.22 KB
 Viewed:  724 Time(s)

pipes 2.jpg


  
View user's profile Send private message
   
FRZ 911
Imola


Joined: 19 Jun 2015
Posts: 862
Location: Northern Ireland

2007 Porsche 997 Carrera 4S

PostPosted: Wed Oct 24, 2018 6:20 pm    Post subject: Reply with quote

Yep - recognise the pipes from the last pic as I’ve just had mine done. Not a cheap fix but the news ones are now treated as recommended. thumbsup
_________________
997.1 C4S Meteor Grey Manual

 
  
View user's profile Send private message
   
deMort
Zolder


Joined: 21 Mar 2015
Posts: 5341
Location: Brighton


PostPosted: Wed Oct 24, 2018 6:21 pm    Post subject: Reply with quote

brownspeed wrote:
Can any of you kind souls point me in the direction of sourcing replacement plastic hex nut which hold the undertrays on? once i have some of these- its out with the waxoyl and up on the ramps.
cheers.


I would go with no.2 here Very Happy

https://www.deroure.com/diagrams.asp?TBL=2859&MAK=3&MDL=26&SMA=0&SMO=0&ST=&SC=0
_________________
Mechanic

7pm - 9pm
At an Indy these days !
 
  
View user's profile Send private message
   
Robert SausageTrousers
Silverstone


Joined: 02 Apr 2018
Posts: 111



PostPosted: Wed Oct 24, 2018 9:56 pm    Post subject: Reply with quote

Yeah one of those was leaking on mine through corrosion, it was picked up on the PPI I had at an OPC so the dealer had them replace both, engine out so not cheap!
 
  
View user's profile Send private message
   
D5RSR
Trainee


Joined: 18 Aug 2014
Posts: 78
Location: Leeds


PostPosted: Thu Oct 25, 2018 6:22 pm    Post subject: Waxoyl Reply with quote

Any tips for the Waxoyl application? aerosol, pump or brush it on?
Don't suppose it matter as long as it goes on. Wont it melt off the hot pipes?
_________________
Darren

997.1 C2S
Leeds
 
  
View user's profile Send private message
   
deMort
Zolder


Joined: 21 Mar 2015
Posts: 5341
Location: Brighton


PostPosted: Thu Oct 25, 2018 6:39 pm    Post subject: Reply with quote

We use a spray can .. not sure the type .. i thought there was only one but i guess not .

It wont melt .. it will smell for a while if you do what i have though .. i buryed the car in it but that was over kill for a normal car .. there was a lot of chassis rust on this one so you wouldn,t normally use as much as i have .

You dont have to use this .. ACF50 is recommended by many people here ..

All i would say is use something and a spray can is easier .
_________________
Mechanic

7pm - 9pm
At an Indy these days !
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum