 | Home > Maintenance & Modifications > "Melting" Rear Left Mudflap, Defender 90. |
 
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| Cheshire110 Member Since: 26 Jul 2013 Location: Cheshire/London Posts: 2726  
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Not sure I follow you? We're RHD same as you, so yes our exhaust is on the left but isn't yours also?
I've never seen it but maybe it's just because it's not hot enough here? Cheers, David Land Rovers of all shapes S3 onwards… Daily is a 110 V8. |
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5th Nov 2014 12:38am |
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| Pickles Member Since: 26 May 2013 Location: Melbourne Posts: 3755  
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Aussie exhaust does not curve around to the side of the vehicle. It exits staight out the rear, through a cutout in the mudflap. At cruising speeds, the mudflap is forced into a more horizontal position by the airflow, placing the mudflap in line with the hot exhaust causing the rubber to melt!
Pickles. |
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5th Nov 2014 4:08am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5430 
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 Click image to enlarge This is how a uk 90 exhaust sits. Andy |
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5th Nov 2014 8:16am |
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| leeds Member Since: 28 Dec 2009 Location: West Yorkshire Posts: 8578
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Without modifying the exhaust the only solution is to stiffen up the Mudflap. Removing mud flaps would be a bit antisocial on gravel roads.
Am sure I have seen someone does a kit which includes stiffeners for the Mudflap. A couple of strips of say 10x 3 mm Ali. Do not take them all the way to the top as the Mudflap needs to flex a bit. Might be worth an experiment. Brendan |
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5th Nov 2014 8:40am |
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| Regard Member Since: 08 Dec 2011 Location: RSA Posts: 251  
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Well, I do not have a 90 (had one but with the normal "bend pipe to the side") but I have a 110 with a "straight pipe" to the rear also with the "cut out" in the flap.
We genarally do the same (in fact faster speeds) around here (120-125km/h) for +_ the same distances. I've never seen or heard of this "problem" here? There is not maybe an issue with your mud flap bracket that might be bent? |
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5th Nov 2014 8:53am |
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| Pickles Member Since: 26 May 2013 Location: Melbourne Posts: 3755
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It's a well known issue in Aus, but is common only to the 90??!!,..and only above speeds of 90/95 kph, for long periods of time.
Brendan, I've been thinking of something like that, or maybe even some heatproof tape around the mudflap cutout to stop the heat getting to it?.....but I'd have no idea of what tape to use. The issue I speak of is well known in Aus. Dealers will even replace the mudflap under warranty,....one owner I know has had three replacement mudflaps fitted,...under warranty! Pickles. |
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5th Nov 2014 9:24am |
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| Regard Member Since: 08 Dec 2011 Location: RSA Posts: 251
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Try to post a pic if you do not mind.
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5th Nov 2014 9:54am |
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| SailingTom Member Since: 19 Nov 2013 Location: ESSEX Posts: 1709
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You could cut 2 strips of curved stainless shaped to follow the cutout 1 either side bolted together to look a neat job?
As said a picture might help if you have the time  Defender puma dormobile camper |
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5th Nov 2014 10:20am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5430
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Would have thought it easier to put a sleeve over the pipe, so mud flap touches that not the hot pipe.
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5th Nov 2014 10:27am |
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| X4SKP Member Since: 29 Nov 2013 Location: Berkshire Posts: 2290 
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Hello Pickles
I agree with the advice so far, the solution is to tackle the mudflap not the exhaust. Mine was re-profiled to deal with a sports exhaust, not perfectly as it turned out, I had the opposite problem to you, at speed it was good being pushed out the way, but at rest it settled too close to a hot exhaust and slightly melted the flap. I have re-cut this and are also taking the opportunity to replace the mudflap brackets which had rusted & pitted very badly, on my 3 year old, 7K mile Defender, always garaged! to a set of stainless steel brackets. I know the 'through the flap' exit arrangements you refer to...stiffen the flap, but be aware of the possible problem of the mud flap not 'getting out the way' on a tight departure angle when off roading. Click image to enlarge SKIP https://www.defender2.net/forum/topic83242.html |
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5th Nov 2014 10:44am |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018 
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Might a metal ring bonded in your mudflap do the trick:
or even a heat shield on the outside of the flap:
or the chelsea truck company option:
Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated  |
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5th Nov 2014 11:24am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16947 
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Remove the rear mudflaps altogether?
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5th Nov 2014 4:35pm |
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| Pam W Member Since: 25 Oct 2011 Location: North Yorkshire Posts: 1169  
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It is also worth noting that the last mounting bracket (at least on the Td5) has a fair amount of adjustment available in it. It is possible that just adjusting the mounting position could get the exhaust to point slightly further out and to the near-side, thus ensuring it isn't touching and/or there is a bit of air-flow around it for the gases to get away from the back of the flap. I have a custom exhaust (as my vehicle was custom rebuilt from ground up) but even so, we've not had a problem with melting (or even rattling) once we got the mounting position fine-tuned.
Perhaps the general quality of the Puma final assembly and/or exhaust mounting brackets are not done as well as on previous models, going by some of the warranty claims and issues people here on Defender 2 tell us about! Our blog - http://landytravels.com/ Yorkshire Off Road Club - http://www.yorkshireoffroadclub.net |
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5th Nov 2014 6:24pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7715 
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we have the same problem with our 90 at work towing a cattle trailer. solution for us was to cut a section out of the top of some front 110 mud flaps, recut the exhaust groove back in and refit. its shorted than std which is enough to stop the air flow pushing it up.
you could also reinforce is with metal strips or hook it/chain/bungee to stop it going fwd but allowing rearward travel? Cheers James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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5th Nov 2014 10:15pm |
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