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Maxthedane
Newbie
Joined: 11 Apr 2019
Posts: 49
Location: Warwickshire
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 Posted: Sat Nov 02, 2019 3:27 pm Post subject: Autumn leaves & radiators... question
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I’ve read in a few places that leaves sucked in through the front spoiler can bung up and damage the radiators that sit behind it. I’ve seen suggestions of taking the bumper off and fitting mesh to prevent this. I’m not handy with spanners so would need to get this done by an Indy.
In the meantime, I was out for a drive today. It was windy with leaves blowing everywhere and I noticed that the grills of most cars coming towards me were covered in them. It got me wondering what my car was sucking in.
Anyway, when I got home I got our cordless Dyson out with a long bendy nozzle and put it into the vents on the front spoiler - out came a bunch of leaves.
Until I get a chance to have mesh fitted is it a good idea to regularly vacuum the leaves & crud out?
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Alex
Le Mans
Joined: 06 Mar 2014
Posts: 17141
Location: The Ribble Valley, Lancashire
2000 Porsche 996 Carrera 4
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| Posted: Sat Nov 02, 2019 3:30 pm Post subject:
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Yes.
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2000 Manual 996 C4 Arctic Silver Convertible
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Robertb
Dijon
Joined: 01 Sep 2003
Posts: 7326
Location: South Oxfordshire
2002 Porsche 996 Carrera 4S
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| Posted: Sat Nov 02, 2019 5:13 pm Post subject:
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If you can operate a screwdriver you can remove the front PU.
To properly clean it all out you need to unbolt the condensers and move them aside to get at the rads... a lot of crud gathers around and between them.
There are some good how to’s on YouTube if you feel adventurous...
_________________
"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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Grey996
Spa-Francorchamps
Joined: 24 Jan 2017
Posts: 346
Location: Sheffield
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| Posted: Sat Nov 02, 2019 5:27 pm Post subject:
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They still need cleaning regularly, I gave mine a full overhaul last year, I redid the mesh, radiators loosened cleaned and treated but I had an advisory after my service on Friday of ‘debris in the radiator ducts’ so I’ll have to do them again soon.
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2002 Porsche 996 C2
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me&my997
Monza
Joined: 23 Mar 2019
Posts: 151
Location: Lancashire
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| Posted: Sat Nov 02, 2019 6:16 pm Post subject:
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My 997 is a garaged low use weekender so covers minimal miles per month but as a routine the long hoover nozzle is in there every 2-3 weeks , probably overkill through summer but definitely do it this time of year .
At the same time i spray liberal amounts of Wd40 on the bottom of the rads for added protection as its generally the bottom that corrodes first .
I don't want the mesh grills fitted , i don't like them so figure the above is the solution for me
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964 C2 / sold in haste - 2010
996 C2 / bought in haste - 2011
997 C4 / back in the game - 2019
http://911uk.com/files/dsc_5307_2_764.jpg
https://www.instagram.com/andy911wheels/
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TonyC911
Nürburgring
Joined: 06 Jun 2016
Posts: 396
Location: High Wycombe
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Robertb
Dijon
Joined: 01 Sep 2003
Posts: 7326
Location: South Oxfordshire
2002 Porsche 996 Carrera 4S
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| Posted: Sat Nov 02, 2019 10:29 pm Post subject:
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| me&my997 wrote: | My 997 is a garaged low use weekender so covers minimal miles per month but as a routine the long hoover nozzle is in there every 2-3 weeks , probably overkill through summer but definitely do it this time of year .
At the same time i spray liberal amounts of Wd40 on the bottom of the rads for added protection as its generally the bottom that corrodes first .
I don't want the mesh grills fitted , i don't like them so figure the above is the solution for me |
I’d imagine something like ACF50 will provide more protection than WD40 but be equally easy to apply.
_________________
"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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C4Silver
Spa-Francorchamps
Joined: 14 Aug 2019
Posts: 273
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| Posted: Sun Nov 03, 2019 8:47 am Post subject:
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I’d agree with the above on the ACF50 
I hoovered mine out a few Months ago and the problem wasn’t so much leaves it was gravel, over time the small pieces had accumulated at the bottom of the condenser and created a miniature sand drift, when Fred hoovered then up the bottom fins were rotten away and soon became black and wet with the dye.
I’d say there must have been half a pound wedged at the back of the tray up against the ally fins, I’ve got the open mouth of the aero body kit so maybe this accentuates the collection, that and the previous owner must have liked driving really close to the car in front ?
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maldren
Suzuka
Joined: 07 Oct 2016
Posts: 1197
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| Posted: Sun Nov 03, 2019 9:40 am Post subject:
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Zunsport are fine but expensive. The real 'DIY' solution is to take off the front bumper (fairly easy) and screw black mesh to the back of the intakes, it's very unobtrusive then, barely noticeable from the front of the car.
As other say, some crap will always get in so it is still worth taking the front off from time to time to keep everything clean.
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Mike
2003 996.2 C2 Coupe Arctic Silver
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K888ETH
Spa-Francorchamps
Joined: 10 Mar 2017
Posts: 258
Location: Hampshire
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JTT
Trainee
Joined: 11 Nov 2015
Posts: 95
Location: Halifax, NS Canada
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| Posted: Sun Nov 03, 2019 12:09 pm Post subject:
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| Robertb wrote: | If you can operate a screwdriver you can remove the front PU.
To properly clean it all out you need to unbolt the condensers and move them aside to get at the rads... a lot of crud gathers around and between them.
There are some good how to’s on YouTube if you feel adventurous... |
This is absolutely true. Don't take for granted how much accumulates between the rads, that you can't see until taking them apart. This is the stuff that rots rads.
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Nightrain QDUN4
Trainee
Joined: 21 Nov 2016
Posts: 79
Location: Aberdeenshire
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| Posted: Sun Nov 03, 2019 1:11 pm Post subject:
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Did mine for about 25 pound, mesh and a tube of tiger seal.
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2004 C4S
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Maxthedane
Newbie
Joined: 11 Apr 2019
Posts: 49
Location: Warwickshire
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| Posted: Sun Nov 03, 2019 7:56 pm Post subject:
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Thanks for all the comments. All very helpful.
I’ll keep vacuuming until I get a chance to do something more permanent. In the meantime, looks like I’m off the road with a bust alternator. Just working out what to do with that!
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2003 C4 Convertible
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deMort
Dijon
Joined: 21 Mar 2015
Posts: 7584
Location: Brighton
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| Posted: Sun Nov 03, 2019 8:16 pm Post subject:
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A C4 is far worse for this than a C2 due to the angle of the radiators .. in both cases leaves .. dirt collects in the far corners .. this holds moisture .. water against metal over a long period rots the metal whether its ally or steel .
On a service we use an airline to blow out as much as possible but this will never get it all out .
The debris can and does collect between the a/c condenser and the rad and slows the airflow .. it won't as such cause an overheat but it will increase the running temps .. often why when stuck in traffic the temp increases .. debris and as not moving = a lack of airflow through the rads .
Ducting is an excellent idea and stops a lot of these issues .. you still need to keep an eye on it though .. dirt is too small to be stopped by grills .
The best way .. pu off , a/c condenser undone and pulled forward and hoover / blow out the debris that's collected .
That will last you a long while depending on where you drive the car .
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My Daughter's Crowdfunding has hit the target .
Thank you all so Very much .
She's not going until july 2020 though .
7pm - 9pm
Now At An Indy.
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Robertb
Dijon
Joined: 01 Sep 2003
Posts: 7326
Location: South Oxfordshire
2002 Porsche 996 Carrera 4S
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| Posted: Sun Nov 03, 2019 10:23 pm Post subject:
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Interesting to hear that grot still accumulates even if mesh is fitted. Another project for the off-season...
_________________
"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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coullstar
Albert Park
Joined: 15 Sep 2015
Posts: 1636
Location: Aberdeen/Torphins
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| Posted: Sun Nov 03, 2019 11:46 pm Post subject:
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What I did is fit the mesh and also drill some decent sized holes at the lower far corner of the shrouds so when power washing it helps flush out the dirt etc. Whats left is usually just stones.
I know people will say that it wont then get full air through the rads but Ive noticed zero difference in running temps.
I also do an annual clean out, this was the last one after running most of last winter/autumn as well.
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1999 C2 Coupe - http://911uk.com/viewtopic.php?t=124107
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maldren
Suzuka
Joined: 07 Oct 2016
Posts: 1197
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| Posted: Mon Nov 04, 2019 8:42 am Post subject:
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| JTT wrote: | | Robertb wrote: | If you can operate a screwdriver you can remove the front PU.
To properly clean it all out you need to unbolt the condensers and move them aside to get at the rads... a lot of crud gathers around and between them.
There are some good how to’s on YouTube if you feel adventurous... |
This is absolutely true. Don't take for granted how much accumulates between the rads, that you can't see until taking them apart. This is the stuff that rots rads. |
Yes this is what mine looked like when I bought the car...
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Mike
2003 996.2 C2 Coupe Arctic Silver
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mattomg
Trainee
Joined: 10 Apr 2019
Posts: 51
Location: Portsouth
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| Posted: Mon Nov 04, 2019 10:40 am Post subject:
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With the Zunsports there's a 20% discount via POC.
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Billy Bumpsteer
Monza
Joined: 12 Aug 2019
Posts: 159
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| Posted: Mon Nov 04, 2019 10:45 am Post subject:
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POC? 
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mattomg
Trainee
Joined: 10 Apr 2019
Posts: 51
Location: Portsouth
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| Posted: Tue Nov 05, 2019 10:53 pm Post subject:
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i mean PCGB. went back to my MG days MGOwnersClub
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