General 1.1 mpi induction kit

[chrizzlephaa]

Just a lil advice, if anyone wanted to make a cold air feed, it is possible to use plumbing tubes to place the cones/feeds wherever you want!

I once read a guide where someone modified the existing airbox to house a new air feed ststem using plumbing tubes to bypass the engine and the heat created by it... Together with an uprated panel filter, he said he found it gave decent increase in performance..

Just an idea for anyone who fancied it

Also, Im sure plumbing tubes of the same diameter as the cone & TB entry will be cheaper

 

[Brooky]

I've never heard of the use of a fan on a RR, but like you I've never used one. I've only got a standard 1.0l atm, so not much point!

Every RR should have one,the two ive been too are big and blumming powerful,one of them was bolted to the floor and the other,a guy had to sit on it

 

[cojones]

Awesome response guys!

Please have a look at my current setup:


As you can see there is some sort of panel on the bumper itself just in the middle. Bottom pics, from left to right: radiator and a bit of the panel, the panel itself, and then the aircon radiator

I think there is just enough space between the two radiators for some plumbing. And that little panel in the middle of the bumper may be able to get cut a bit and serve as a support for the air feed. What do you think, rosso?

Sorry the pictures aren't very good (click on it anyway to enlarge), my camera phone is a bit crap.

 

[rossoschumi]

Yes, I think the best option is the 6 x 3 inch duct (Demon tweeks 2007 catalogue page 83 if you have one), if not it should be on the website, or try larkspeed's website as they used to do them but it's not in the current catalogue.
This duct has a stepped outlet for a 2.5 or 3 inch connecting pipe up to the airbox. If you get the 'ripspeed' flexi alloy tubing from Halfords it will go onto the 3 inch bit.
I think it would be fairly easy to attach the duct to that plastic section between the 2 radiators and might not need you to cut any of it away if you mount it vertically. The duct has a flat 'flange' around the edge so it's just a simple self tapping screw or small nut and bolt fixing. I think even if you can only fix it on one side (onto the plastic bumper plate) it would be plenty secure enough.

 

[cojones]

Excellent, thanks a lot rosso

 

[Oldschool]

I've never heard of the use of a fan on a RR, but like you I've never used one. I've only got a standard 1.0l atm, so not much point!

But yeah, what you said is true, Without the airflow created from forward motion into the engine, theres no cold air to be fed into the TB and will cause a decrease in power/performanceof the engine. Even if the fan was used, it'd have to be mighty powerful to match the airspeeds of the air taken in by the filter at the speeds of what the rolling road will measure (If that makes sense...).

:yum:

This is why we use the rr only as an development aid. Having limited access to a wind tunnel does help as well as does general road testing under all realistic conditions.

It is a phallacy to conclude that an air duct is always giving you a ram air effect. depending on the over all shape of the car in connection with the chosen set-up from a certain speed onwards air might be sucked out. I have seen this repeatedly in racing, where it was my job to re-design air intakes, which pushed the cars on average six places up the field.

 

[chrizzlephaa]

This is why we use the rr only as an development aid. Having limited access to a wind tunnel does help as well as does general road testing under all realistic conditions.

It is a phallacy to conclude that an air duct is always giving you a ram air effect. depending on the over all shape of the car in connection with the chosen set-up from a certain speed onwards air might be sucked out. I have seen this repeatedly in racing, where it was my job to re-design air intakes, which pushed the cars on average six places up the field.

Im no expert, but Im not a novice. Apologies if my post made it seem as though I was saying an air duct will give you a ram air effect, I know it wont! But having an air duct will improve the flow of cold air to the TB itself via the cone filter or whatever setup there is.

Not to contradict your point, but not many of the people here are racing. Most of the use of intakes & air filters are for an increase in on the road performace & better engine response - so impecable performance isnt really necessary. an improvement in the breathing of the engine will be enough for the needs of most people on here.

Having read your post, I must admit.. I never knew the air intake could make that much of an improvement to the engine to boost an engine to perform that much better!!!

Might have to get my readin glasses out and learn some more

 

[rossoschumi]

This is why we use the rr only as an development aid. Having limited access to a wind tunnel does help as well as does general road testing under all realistic conditions.

It is a phallacy to conclude that an air duct is always giving you a ram air effect. depending on the over all shape of the car in connection with the chosen set-up from a certain speed onwards air might be sucked out. I have seen this repeatedly in racing, where it was my job to re-design air intakes, which pushed the cars on average six places up the field.

I totally agree with this, any air passing over a surface at speed will always try to find the easiest path with the least resistance over and around the surface.
So if, for example, an air intake was on a sloping surface and was 'flush' with that surface, most if the air passing over the aperture would much rather slip over and around it than go inside (some will of course). This can then lead to a low pressure area and like you said, actually suck air out, but there are so many variables involved, on some cars it will and some it won't.

True 'ram air' induction systems are a science (& only really work at very high speed) and most DIY car modifiers won't have the development equipment to create a totally effecient system, but I say, whatever you have on your own car, if it improves the performance and driving experience and you're happy with it then great!

 

[Oldschool]

Im no expert, but Im not a novice. Apologies if my post made it seem as though I was saying an air duct will give you a ram air effect, I know it wont! But having an air duct will improve the flow of cold air to the TB itself via the cone filter or whatever setup there is.

Not to contradict your point, but not many of the people here are racing. Most of the use of intakes & air filters are for an increase in on the road performace & better engine response - so impecable performance isnt really necessary. an improvement in the breathing of the engine will be enough for the needs of most people on here.

Having read your post, I must admit.. I never knew the air intake could make that much of an improvement to the engine to boost an engine to perform that much better!!!

Might have to get my readin glasses out and learn some more

Yesterday we had a Stilo 2.4 on the rr with a re-map a CDA and a performance cat back system on it (I think it was Supersprint. Sorry after 20 cars on the rr I might miss the make)

Standard tha car is supposed to peak at 170bhp. Map, exhaust and CDA would give you what? Whatever it should add is debatable but one thing is sure it should end up peaking at 159bhp.

I know that some of the reasons are the turbulence factors in the air intake.

 

[cc1]

For every change in direction air has to make you get a loss in velocity to a point where you can create a vacuum within the system.
The most ideal would be, big, short and straight, like bell mouths.

 

[cojones]

In addition to my previous post above, this is a diagram of my induction set up which uses the normally blank near-side bumper grill as a large air intake duct (which was made by me out of aluminium but you can buy plastic ones from places like Demon Tweeks, Larkspeed etc..).
Out of all the custom induction systems I have made on previous cars, this one works by far the best and the faster the car goes, the better it works !

Got a similar induction kit now on my UK sei sporting. This post will be extremely helpful to improve it a little bit further. I will try to do as the picture suggests. Thanks a lot rosso!!

 

[rossoschumi]

Great!
Hope it goes well, keep me posted on it - anything you want to know you can PM me if you don't want to add to this thread .

All hail the new King Kimi :worship: . Won the greatest prize in motorsport in a car with a Fiat badge on the front! :slayer: .

 

[cojones]

Great!
Hope it goes well, keep me posted on it - anything you want to know you can PM me if you don't want to add to this thread .

I might actually change part of the induction system I already got, need to confirm that Green filters stuff fit on the current setup.

I cannot find the nano storm on the tuning shops you mentioned, they do have them however on greenfilters website.

Do you have a direct link somewhere for the setup that goes from the filter to the bumper? How did you fix the rectangular thing to yours?

 

[rossoschumi]

As my system is entirely bespoke and custom made I dont have any links or anything, but as you will be getting one of the ready made black plastic ducts that fit to the bumper, they will have a stepped round section at the back in both 2.5 and 3 inch to allow a flexi pipe of either diameter to slip onto and be secured with a jubilee clip, then the other end of the ally flexi pipe should fit over the intake of the nano storm filter.
If you get the ally flexi from Halfords (cheapest anyway) it is 3 inches so will be an exact match for the back of the duct and a close enough match for the front of the filter.
On the subject of the nano storm filter, I'm looking at the current Demon Tweeks 2007 catalogue and on page 215 they have both the storm and nano storm filters. The catalogue number for the nano storm is simply WI.
Mind you, I have seen things in the catalogue before and failed to find them on the website so you might have to ring them and tell them the page number and item number above, you would then just need to select which colour you want. It does say 'NEW' in the catalogue so they might not have added them to the website yet.

 

[cojones]

Ahhh that'll explain it it isn't on the website, what price have you got on your catalogue? inc VAT?

What about the duct? Sorry if I'm being a bit thick here lol but I can't find it anywhere. The halfords flexi should be straightforward enough to get, got one shop just up the road.

How did you fix the duct to the bumper?

 

[rossoschumi]

The nano storm is £43.42 inc VAT in the catalogue.

The duct is on page 83 and the one I'd get is 6 x 3 inch with the 2.5/3 inch outlet and is £17.63 (catalogue number ID150-75.

To fix mine I removed the whole grill (just a few screws hold it on) and disconnected the wiring for the fog light so I could pull it completely out of the way. Then behind that is just the plastic blanking plate (there's nothing behind this plate on my Schumi, but just make sure on yours - it should just be an empty space between it and the wing liner).
Then I made a card template for my duct, marked around that on the plastic and then drilled a hole to start the jigsaw off and cut out the hole.
The duct has a nice flat flange lip all the way around for you to drill holes for fixing into the surface it's being mounted in, one self tapper in each corner is plenty.
(At the risk of stating the obvious, but it's better to be safe than sorry, make sure the template you use for cutting the hole is only just marginally bigger than the size of the actual duct opening , not including the mounting flange around the edge, otherwise the duct will fall inside the hole, and once it's cut, it's cut.)

 

[cojones]

Excelente, that was the instructions I needed. Sounds straiightforward enough, will have a look behind that grill today to check I've understood it correctly