|
||
|
|
28th September 2012, 23:25 | #1 |
Gets stuck in
2004 MG-ZT CDTi 135 Saloon in TROPHY YELLOW + Synergy Two-wow and an Aussy import RAV 4 2.4L Join Date: Nov 2008
Location: Folkestone
Posts: 784
Thanks: 4
Thanked 30 Times in 22 Posts
|
Air Intake Modification Issue.
I decided to make a new thread of this so it gets read. This is to do with being wary about cutting the corrugated bellows section off the air intake on the diesel 75 & ZT.
Following comments made by Marinabrian in an earlier post regarding possible MAF problems by doing the intake mod I decided to investigate further. A tech bulletin to be found on line (MGR TB0090), and referred to by Marinabrian, is very informative and it shows a thin metal plate fixed to the centre of the underside of the slam panel and sitting over the electric fan housing. The plate is fitted to avoid water ingestion into the pre modded air intake. I checked my car and it is fitted with the plate. Some earlier cars did not have the plate fitted and was the reason for the issue of the bulletin. The position of the plate would stop water that enters the grill on the 75 or ZT from blowing upwards into the intake area at the top of the engine. The original intake position sits forward of the back edge (engine edge) of the plate so water ingestion into the intake would have been avoided or prevented. Those of us (including me) who have cut back the intake and removed the bellows section, have inadvertantly now placed the air intake mouth to the rear of the plate so it would appear that we have, afterall, made it easier for possible water ingress if water was to come off the back edge of the plate and blow upwards in to the engine compartment between the plate and the front of the radiator core.(It could be argued that this would be a good reason for removing the plate!!) As I said, the plate is thin and you can get to the rear edge with your hands so, as the intake mod is already done, to avoid any water problem I have bent the rear edge of the plate downwards where it sits over the electric fan housing. Whilst not ideal this may help to avoid an issue with water turning up into the engine area. I may look at this further and, if needed, improve or extend the plate towards the engine to complete the job. The only problem with this is that the modified intake mouth is now offset from the original along the line of the car which may mean that any alteration to the plate may have little effect. If I decide to pursue alteration of the plate (if I can be bothered) to fit in with this change I'll let you know. I suggest that anybody contemplating the air intake mod finds and reads this bulletin before they proceed if only for peace of mind and to find out whether or not they have the plate fitted. Last edited by denis; 28th September 2012 at 23:39.. |
28th September 2012, 23:44 | #2 |
Banned
rover75 cdti AUTO TOURER 160 bhp. Join Date: Jul 2010
Location: Glasgow
Posts: 35,346
Thanks: 2,985
Thanked 3,685 Times in 2,463 Posts
|
to be honest i have modded all 3 of the 75s i have owned and had no MAF issues , in fact when i ploughed into deep water in the dark in my 2nd 75 it was the air mod that saved my engine as i have no doubt it would have drowned otherwise .
Not doubting your findings i'm only stating my experiences . |
28th September 2012, 23:49 | #3 | |
Gets stuck in
2004 MG-ZT CDTi 135 Saloon in TROPHY YELLOW + Synergy Two-wow and an Aussy import RAV 4 2.4L Join Date: Nov 2008
Location: Folkestone
Posts: 784
Thanks: 4
Thanked 30 Times in 22 Posts
|
Quote:
|
|
28th September 2012, 23:53 | #4 |
Give to Learn
Freelander 2 Join Date: Aug 2010
Location: West Midlands
Posts: 18,832
Thanks: 1,155
Thanked 6,407 Times in 3,874 Posts
|
The bellows fit into the recess on the slam panel as shown here below which plate are you refering to i do not know if water ingress will happen to much if the bellows are cut off, but i do not intend to do mine as these where made for a reason.
__________________
Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " Last edited by Arctic; 9th July 2014 at 12:34.. |
29th September 2012, 08:35 | #5 | |
Gets stuck in
2004 MG-ZT CDTi 135 Saloon in TROPHY YELLOW + Synergy Two-wow and an Aussy import RAV 4 2.4L Join Date: Nov 2008
Location: Folkestone
Posts: 784
Thanks: 4
Thanked 30 Times in 22 Posts
|
Quote:
Looking at your second picture, I see that there isn't really an offset between the original intake mouth and what becomes the intake mouth after the mod,so my statement about offset in my original post is not correct. What it does mean is that the plate could still contribute to preventing water turning up into the path of the modded intake mouth if it ever happened. Last edited by denis; 29th September 2012 at 08:47.. |
|
29th September 2012, 15:04 | #6 |
This is my second home
75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD Join Date: May 2010
Location: Leeds
Posts: 17,273
Thanks: 2,160
Thanked 2,061 Times in 1,586 Posts
|
My three (well two, the centre bolt was missing) fixing have been seized since I got the car and sorting them out has been something I've been intending to do for a while.
What I noticed on mine once I had eventually removed it, which no one has mentioned, is that there is a water trap in the duct just to the rear of the bellowed section. There is a full width 'sump', with a drain hole in the bottom. Anyway, today I got a roundtuit.... Centre bolt was missing, but the two outer ones were completely seized and the brass nuts just turning in their rubber surrounds. My only option was to drill the two bolts off, but I managed to snap my pilot drill in one of them so I had to carefully grind the head off. The grinding wrecked the flange of the rubber, which left me one short. I managed to clean up the threads of the brass inserts with tap, to reuse the damaged rubber unit, I fitted it in the centre hole, but made it stay put with some hot glue. Three new bolts, a good coating of copper grease and it is all back in place. Idea was, to make it quickly removable should I need to and get my first good look around the front of the engine since I got it. Once off, it make access between the rad and the engine much better.
__________________
Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money. |
29th September 2012, 16:44 | #7 |
I really should get out more.......
Rover 75 CDT Club Tourer Join Date: Nov 2006
Location: Milky Way
Posts: 2,393
Thanks: 105
Thanked 513 Times in 382 Posts
|
In the original mod carried out by Rover Ron all those years ago, he did in fact mention that the plate found in front of the air intake should not be removed or bent out of the way, in this way there should be very little chance of water injuring the MAF sensor, mine has been like this for 6 years.
|
29th September 2012, 16:51 | #8 |
I really should get out more.......
Rover 75 CDT Club Tourer Join Date: Nov 2006
Location: Milky Way
Posts: 2,393
Thanks: 105
Thanked 513 Times in 382 Posts
|
In the original mod carried out by Rover Ron all those years ago, he did in fact mention that the plate found in front of the air intake should not be removed or bent out of the way, in this way there should be very little chance of water injuring the MAF sensor, mine has been like this for 6 years.
|
30th September 2012, 00:31 | #9 | |
Give to Learn
Freelander 2 Join Date: Aug 2010
Location: West Midlands
Posts: 18,832
Thanks: 1,155
Thanked 6,407 Times in 3,874 Posts
|
Quote:
__________________
Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " |
|
13th September 2019, 11:39 | #10 |
Posted a thing or two
Rover 75 saloon, manual. Rover 75 Tourer, Auto. Join Date: Jan 2013
Location: Newry
Posts: 1,785
Thanks: 574
Thanked 443 Times in 371 Posts
|
#ilovetthreadressurections😄
Sent from my iPhone using Tapatalk
__________________
2006 75 Contemporary SE diesel manual (#1) 2003 75T Connoisseur SE diesel auto (For Comfort) 2005 75 Connoisseur SE diesel auto (Marmite duotone ) 2006 75 Connoisseur SE diesel auto (The last one?) 2009 E220 (For a change) 2018 L200 (For Big & Heavy Things) 1976 W114 250 Manual (For Sundays) |
Thread Tools | |
Display Modes | |
|
|