Air intake mod

johnnyb44 · 10th July 2014, 08:10

Good Morning
I've just been watching some You Tube clips on our cars and couldn't help but notice that the concertina part of the air intake had been cut out. What purpose does this solve.Is it a worth while mod as it looks an easy and cost free thing to do.
Many thanks for reading
Johnny

wuzerk · 10th July 2014, 08:33

I assume that you are referring to the diesel models? (add details to your handle). It is questionable if there is any great advantage in doing the air intake mod and I have yet to see any figures which show an improvement.
To me, if you insist on interferring with the original setup, I would remove just the Bottom section of the concertina area which would leave it looking standard.

Heddy · 10th July 2014, 08:55

It really is not recommended to cut/alter the air intake. Experts at the club allege that the concertina section is a moisture trap and as such prevents water from destroying the MAF. I personally cannot see any useful improvements being made by veering away from standard. As long as the entry on top of the slam panel hasn't collapsed then this is the best scenario.

ceedy · 10th July 2014, 09:23

I did this in the days when it seemed the thing to do..

but then my concertina bit was also cracked .

And so far I've not seen any reason on the forum ( other than looking OEM) to put it back

But the concertina bit isn't designed to affect moisture movement although in practice it may a bit? .. as there is already a water trap/drain hole behind the corrugated bit .

It seems fairly obvious that the corrugated section is there to allow movement between the chassis and a continually rocking motor.

.

As long as you have the metal deflector shield fitted you shouldn't have any problems . if not it's a risk !!

I'm basing this on 6 years ( 60k odd miles ) and many many monsoons like downpours

with this probably , NON performance enhancing mod

.. done

that enuf controversy for today

Chris

Heddy · 10th July 2014, 11:17

Only thing I can add to this is that if the intake is shortened, then the engine will take in warm air from the engine bay, and AFAIK diesels enjoy cool/cold air.

johnnyb44 · 10th July 2014, 13:56

Hmmm .
I think i will leave it well alone.
Thanks all the same though for your thoughts and views. Its all these kinds of threads that make this place. such a good in source of information.
Johnny

10th July 2014, 08:10	#1
johnnyb44 I really should get out more....... Rover 75 Join Date: Sep 2013 Location: north wales Posts: 2,701 Thanks: 1,774 Thanked 902 Times in 507 Posts	Air intake mod Good Morning I've just been watching some You Tube clips on our cars and couldn't help but notice that the concertina part of the air intake had been cut out. What purpose does this solve.Is it a worth while mod as it looks an easy and cost free thing to do. Many thanks for reading Johnny __________________ Replaced pcv filter, springs, plenum spy hole mod,Bonnet cable divider mod. Wax oiled.Air con recharged. Auto box oil changed , Jules plenum guard fitted .Smoked wind deflectors fitted.S/S Compensator.Club Grill Badge kindly donated by Andyg2011..

10th July 2014, 08:33	#2
wuzerk Passed Away Rover 75 CDT 03 auto Conn. SE Join Date: May 2009 Location: London Posts: 2,885 Thanks: 104 Thanked 254 Times in 204 Posts	Intake I assume that you are referring to the diesel models? (add details to your handle). It is questionable if there is any great advantage in doing the air intake mod and I have yet to see any figures which show an improvement. To me, if you insist on interferring with the original setup, I would remove just the Bottom section of the concertina area which would leave it looking standard.

10th July 2014, 09:23	#4
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,076 Thanks: 916 Thanked 1,214 Times in 768 Posts	I did this in the days when it seemed the thing to do.. but then my concertina bit was also cracked . And so far I've not seen any reason on the forum ( other than looking OEM) to put it back But the concertina bit isn't designed to affect moisture movement although in practice it may a bit? .. as there is already a water trap/drain hole behind the corrugated bit . It seems fairly obvious that the corrugated section is there to allow movement between the chassis and a continually rocking motor. . As long as you have the metal deflector shield fitted you shouldn't have any problems . if not it's a risk !! I'm basing this on 6 years ( 60k odd miles ) and many many monsoons like downpours with this probably , NON performance enhancing mod .. done that enuf controversy for today Chris __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's Last edited by ceedy; 10th July 2014 at 09:27..

10th July 2014, 13:56	#6
johnnyb44 I really should get out more....... Rover 75 Join Date: Sep 2013 Location: north wales Posts: 2,701 Thanks: 1,774 Thanked 902 Times in 507 Posts	Hmmm . I think i will leave it well alone. Thanks all the same though for your thoughts and views. Its all these kinds of threads that make this place. such a good in source of information. Johnny __________________ Replaced pcv filter, springs, plenum spy hole mod,Bonnet cable divider mod. Wax oiled.Air con recharged. Auto box oil changed , Jules plenum guard fitted .Smoked wind deflectors fitted.S/S Compensator.Club Grill Badge kindly donated by Andyg2011..

10th July 2014, 08:55	#3
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	It really is not recommended to cut/alter the air intake. Experts at the club allege that the concertina section is a moisture trap and as such prevents water from destroying the MAF. I personally cannot see any useful improvements being made by veering away from standard. As long as the entry on top of the slam panel hasn't collapsed then this is the best scenario.

10th July 2014, 11:17	#5
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	Only thing I can add to this is that if the intake is shortened, then the engine will take in warm air from the engine bay, and AFAIK diesels enjoy cool/cold air.