Air intake mod - Page 5

rossocorsa · 29th May 2010, 16:02

Quote:

Originally Posted by James.uk

Re peeps removing the splash guard when cutting the intake pipe off. Once the pipe is disconnected then the splash guard doesn't interfere with the airflow so why bother removing it??

For more ooomphhh why not just turn on the "sport" option on the gearbox?

Maybe mixing just a small amount of nitro glycerin to your fuel will aid combustion? ?? ???

...

if you keep the intake to avoid warm air from the engine bay then I reckon bending up or removing the splash guard ought to allow more cool airflow to the intake I think I need to look at mine again and redesign a bit as intake temp has def increased a little bit even though I only did the basic cut off mod; with standard unmodified was as near as dammit outside temp most of the time

James.uk · 29th May 2010, 22:07

The splash guard is there to prevent water spray entering the standard air intake. So unless you do the mod, you need it.

...

rossocorsa · 29th May 2010, 23:38

Quote:

Originally Posted by James.uk

The splash guard is there to prevent water spray entering the standard air intake. So unless you do the mod, you need it.

...

yes I did think that when it comes down to it BMW/rover didn't do such a bad job after all

MalteseMarc · 31st May 2010, 07:24

Just to ask while we have the last embers of this debate still aglow, what is the difference between the various stages of modification of the intake mod, for example MK1, MK2 upto Mk4, I heard being discussed on this forum?

Mintee · 31st May 2010, 07:39

Quote:

Originally Posted by marc.t1

Just to ask while we have the last embers of this debate still aglow, what is the difference between the various stages of modification of the intake mod, for example MK1, MK2 upto Mk4, I heard being discussed on this forum?

All I remember finding was the 'original' idea, which was opening up the 'mouth' of the air intake (as seen on Rover Ron's pages) which seems to have developed into the 'cut the intake tube back' (which I have done).

Are there any more?

Raistlin · 31st May 2010, 08:33

As above. The first attempt was to open out the intake.

Next was to cut the shaped intake off.

There was a further cut back which was rapidly followed by cutting the inlet tract right the was back to the stage where the corrugated part was completely removed.

JohnDotCom · 31st May 2010, 08:34

Ti Rich did a lot of research on this all documented on these forums,
but the end result was the MK2 was the best.
Others such as having a tubing intake drew in to much water and finished off the MAF's one other one I remember was a non starter due to loss of power or such like with the similar Shannon idea as the V6's which also drew water into the MAF.

Andyd358 · 31st May 2010, 08:36

I did mine and it seemed to improve things. Although it could have been just in my own mind. I was trying to find the post with the photos of the intake mod where a tube was used down to behind the bumper anybody point me in the right direction please.

rossocorsa · 31st May 2010, 08:41

Quote:

Originally Posted by Andyd358

I did mine and it seemed to improve things. Although it could have been just in my own mind. I was trying to find the post with the photos of the intake mod where a tube was used down to behind the bumper anybody point me in the right direction please.

can't help with finding that but I wouldn't do it far too low severe risk of sucking water in should you go through a ford or get stuck in flash floods, from efficency though probably the best option

rovexCDTi · 6th February 2011, 17:22

Sorry i know.. old thread.

On my old 420 GSI turbo i cut a hole in the airbox and ran a tube to the front bumper from it. It looked more standard than a massive cone and resulted in a nice sound and more power (the air box uses the same small filter as the 1.4!).

On the CDTI it might be possible to retain the standard intake, but add an extra feed to the side of the box. I will have a look for a suitable place to cut it. It need not go to a cool air region and you need not worry too much about water intake, because the original feed prevents a strong vacuum being present. All you need to do is increase the potential flow a bit, this would double it.

31st May 2010, 08:36	#48
Andyd358 Posted a thing or two JAguar X-Type 2.0d Sport Join Date: Jan 2010 Location: Bedlington, Northumberland Posts: 1,902 Thanks: 2 Thanked 15 Times in 8 Posts	I did mine and it seemed to improve things. Although it could have been just in my own mind. I was trying to find the post with the photos of the intake mod where a tube was used down to behind the bumper anybody point me in the right direction please. __________________ This was My MGZT [SIGPIC][/SIGPIC] Going to miss driving it Support Our Troops http://www.helpforheroes.org.uk/

29th May 2010, 22:07	#42
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	The splash guard is there to prevent water spray entering the standard air intake. So unless you do the mod, you need it. ...

31st May 2010, 07:24	#44
MalteseMarc Posted a thing or two Rover 75 CDTI connoisseur SE auto, 2004 Join Date: Sep 2008 Location: France Posts: 1,008 Thanks: 138 Thanked 70 Times in 52 Posts	Just to ask while we have the last embers of this debate still aglow, what is the difference between the various stages of modification of the intake mod, for example MK1, MK2 upto Mk4, I heard being discussed on this forum?

31st May 2010, 08:33	#46
Raistlin Banned 75 CDT Connoisseur SE Auto Join Date: Nov 2006 Location: Wolverhampton Posts: 8,450 Thanks: 0 Thanked 3 Times in 3 Posts	As above. The first attempt was to open out the intake. Next was to cut the shaped intake off. There was a further cut back which was rapidly followed by cutting the inlet tract right the was back to the stage where the corrugated part was completely removed.

31st May 2010, 08:34	#47
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Ti Rich did a lot of research on this all documented on these forums, but the end result was the MK2 was the best. Others such as having a tubing intake drew in to much water and finished off the MAF's one other one I remember was a non starter due to loss of power or such like with the similar Shannon idea as the V6's which also drew water into the MAF.

6th February 2011, 17:22	#50
rovexCDTi This is my second home MG ZT+ 135 Join Date: Jan 2011 Location: Exeter Posts: 3,626 Thanks: 9 Thanked 42 Times in 26 Posts	Sorry i know.. old thread. On my old 420 GSI turbo i cut a hole in the airbox and ran a tube to the front bumper from it. It looked more standard than a massive cone and resulted in a nice sound and more power (the air box uses the same small filter as the 1.4!). On the CDTI it might be possible to retain the standard intake, but add an extra feed to the side of the box. I will have a look for a suitable place to cut it. It need not go to a cool air region and you need not worry too much about water intake, because the original feed prevents a strong vacuum being present. All you need to do is increase the potential flow a bit, this would double it.