For those looking for flex pipe......

I just bought 100mm flex pipe from Clark Rubber for $37.95/m

http://www.clarkrubber.com.au/index.php?sectionID=4795&pageID=4873

They also have 90mm and 70mm

I am going to use it it for a similar cai as greenmat http://www.aussiemagna.com/forums/showthread.php?t=16688

Thats if I can get past the battery box

cheers

ewwwww. Thats the stuff you can get at a hardware store for ducting the exhaust from range hoods. Its really soft and crushes easily, wouldnt be a good choice.

This is the stuff I've suggested to bend to shape to the front grille, tape around it, fibreglass then cut it out from inside the fibreglass. Doesn't conduct heat, 4 inch mandrel bends, smooth, can even go the whole shebang and have a bellmouth effect on the end.

the 100mm flex pipe is not flexible enough for my needs, so I am back to the drawing board...

I would bet EZ boys stuff is more flexible(its very soft rubber), also you could get 90mm from him too.

For those looking for flex pipe......
I just bought 100mm flex pipe from Clark Rubber for $37.95/m
http://www.clarkrubber.com.au/index.php?sectionID=4795&pageID=4873
They also have 90mm and 70mm
I am going to use it it for a similar cai as greenmat http://www.aussiemagna.com/forums/showthread.php?t=16688
Thats if I can get past the battery box
cheers

Is it smooth inside? Or ribbled? 80 mm size is sufficient, if 100 mm doesn't fit.

Is it smooth inside? Or ribbled? 80 mm size is sufficient, if 100 mm doesn't fit.


The clarks rubber is ribbed, it wasn't flexible enough for my needs anyway. there seems to be no way that a 100mm pipe will fit down the front of the engine in a TL AWD. I stand to be corrected though.

I am happy with the route I ended up taking any way. it is much simpler and gets rid of any isseus of picking up rubbish and water off the road. It's also a lot shorter too

I am just trying to source some 90mm pipe that is flexible enough to replace the 80mm stuff I have as it is a little soft when warm.

S

that is WAY neater than running it under the car, which i never really liked. Well done man.

Thanks but as they say...there are no new ideas.

I got the idea from greenmatt http://www.aussiemagna.com/forums/showthread.php?t=16688 Credit should go to him for thinking it up.

It seems to have made a bit of a difference to my fuel consumption too.
even with the computer recalibrating its'self (i had to remove the battery) which is know to make fuel consumption worse for a while.
My fuel consumption has droped from low 13's to low 12's.

will see how it goes after the computer has done it's stuff

Shane

Those pics really do show up how dirty my cars is though.......

It's a little embarrasing.....

ahh well bugger it.

My car is filthy aswell! Where im house sitting for the next few weeks, there is no were to clean my car, so i either have to go home or go to one of those car wash places where you can do it yourself.

The flex pipe looks good. I have been wanting to do something simple like that for ages but cant find suitable piping. There is some stuff from Supercheap which i was gonna use on my old accord, it was 80mm but i dont think it woulud be the right material for use on a TL/TW as it seemed to 'collapse' fairly easy.

Are you just using a k&n drop in filter?

looks good
did you have to cut away at the battery box?

The pipe I got is 80mm it is a little soft but it is not likley to collapse. But am looking for some 90mm stuff but it seems that no one knows where to get it. I have posted a few times asking about it.

yes I had to remove a part of the battery box, it was no big deal and you would never know unless you knew what you were looking at.

yep I've got a k&n pannel

The clarks rubber is ribbed.
I am happy with the route I ended up taking any way. it is much simpler and gets rid of any isseus of picking up rubbish and water off the road. It's also a lot shorter too
I am just trying to source some 90mm pipe that is flexible enough to replace the 80mm stuff I have as it is a little soft when warm. S

Thankx for that.

Take this as constructive critisism: Ensure the pipe u get is as smooth as possible inside. PVC (plumbing) pipes are commonly used, but they do tend to flex a bit when extremely hot. Unless u get those proper CAI rubber tubes from RPW or where ever.
Also, the intake mouth at front needs to be round to enable the best feed. Add a bell mouth to it too.
I have 80mm aviation heater pipe, 80 bux/meter. Flexes sufficiently, and almost totally smooth inside. At the bottom used some PVC elbows and a bellmouth.

Theres not much room for a bellmouth with the TL setup, anyway its in the direction of travel. If you still cant find some 90mm get in contact with EZ Boy.

I have pm'd him a couple of time but with no response.

I have pm'd him a couple of time but with no response.

Well he keeps saying he has loads of the stuff left. Maybe try one last time

Thankx for that.

Take this as constructive critisism: Ensure the pipe u get is as smooth as possible inside. PVC (plumbing) pipes are commonly used, but they do tend to flex a bit when extremely hot. Unless u get those proper CAI rubber tubes from RPW or where ever.
Also, the intake mouth at front needs to be round to enable the best feed. Add a bell mouth to it too.
I have 80mm aviation heater pipe, 80 bux/meter. Flexes sufficiently, and almost totally smooth inside. At the bottom used some PVC elbows and a bellmouth.

Question why does it have to be round??? the original one is rectangular..... isn't it just the area of the opening that matters?

I noticed that you have the CAI protruding from the hole beside the headlight. I suspect that, with the ram air affect generated, you may have some running issues that will need to be tuned for (maybe flat spots). The stock NZ CAI sits just back from the hole beside the headlight, using the space between the battery and the headlight as a "still air" box. The notes that are reputed to come with these NZ kits indicate that the main idea is to provide cold air, not ram air. Motorcycle manufacturer's seem to use the still air box approach as well. Numerous bikes have ram tubes into a still air box and then from the still air box into each runner to a throttle body. I'm no expert on this, but I'm sure there are other forum members who have the good oil on the ram air approach.

Ken

I noticed that you have the CAI protruding from the hole beside the headlight. I suspect that, with the ram air affect generated, you may have some running issues that will need to be tuned for (maybe flat spots). The stock NZ CAI sits just back from the hole beside the headlight, using the space between the battery and the headlight as a "still air" box. The notes that are reputed to come with these NZ kits indicate that the main idea is to provide cold air, not ram air. Motorcycle manufacturer's seem to use the still air box approach as well. Numerous bikes have ram tubes into a still air box and then from the still air box into each runner to a throttle body. I'm no expert on this, but I'm sure there are other forum members who have the good oil on the ram air approach.

Ken

No running issues presented on mine even at high speed.

yeah, I havn't had any issues yet. I suppose the oem airbox has enoigh space inside before it hits the maf it to counteract any ram effect.

I am considering one of barry's lean out kits. I'm not sure if I am suffering from the problem but if I install one least I can know for sure that it isn't an issue.

Oh and I finally got on to EZ so a new 90mm flex pipe should be on it's way

I can see where everyone is goin with this set-up, but is there any real difference in running this compared to the current set-up??... I have seen people say fuel has dropped, but seriously droppin from low 13's to low 12's can be a simple matter of sitting at traffic lights or goin straight thru em.....Fair enuf if you where actually sucking in cold air, but your suckin in exact same air as the original set-up air hammer...

I can see where everyone is goin with this set-up, but is there any real difference in running this compared to the current set-up??... I have seen people say fuel has dropped, but seriously droppin from low 13's to low 12's can be a simple matter of sitting at traffic lights or goin straight thru em.....Fair enuf if you where actually sucking in cold air, but your suckin in exact same air as the original set-up air hammer...

I guess by current setup you mean the original setup

The main advantage to this is that I am now receiving a far greater amount of air as the opening is larger and it is getting to the air box easier with the air no longer being sucked from between the slit between the bonnet and the grill

standard intake - approx 300mm long x 15mm high = 45oomm sq

90mm pipe - 3.1412x45mm squared = 6358.5mm sq

It is also a shorter and more direct route to the air box in comparison to running down below the engine.

I'm no scientist, but it makes sense to me. Is there any real difference?????
Well my fuel consumption has definitely dropped. Now having used 6 tanks of fuel my consumption is still in the mid 12’s. and I am driving it as hard as ever.

I guess by current setup you mean the original setup

The main advantage to this is that I am now receiving a far greater amount of air as the opening is larger and it is getting to the air box easier with the air no longer being sucked from between the slit between the bonnet and the grill

standard intake - approx 300mm long x 15mm high = 45oomm sq

90mm pipe - 3.1412x45mm squared = 6358.5mm sq

It is also a shorter and more direct route to the air box in comparison to running down below the engine.

I'm no scientist, but it makes sense to me. Is there any real difference?????
Well my fuel consumption has definitely dropped. Now having used 6 tanks of fuel my consumption is still in the mid 12’s. and I am driving it as hard as ever.

Yeah man original set up being the triangle shaped air hammer feeding into the air box, I must have a different set-up (TH) cos the piping doesnt go anywhere near the engine, its just sitting on grill and feeds straight into box (I will admit I have never seen under the bonnet of a TL)...Don't get me wrong Im not here too doubt your set-up, not at all... Im just baffled... althou I will give the piping a go for the next 1000km drive I do, seriously I am curious to whether it will help, if I drop below 8's per 100 Ill keep it in there :D

Yeah man original set up being the triangle shaped air hammer feeding into the air box, I must have a different set-up (TH) cos the piping doesnt go anywhere near the engine,

Sorry I was comparing this setup to the other type of CAI that runs down the front of the engine and picks up air from behind or below the bumper like this http://www.aussiemagna.com/forums/showpost.php?p=711229&postcount=22 I'm in the middle of a uni assignment and my brain is a bit haywire

The maths is based on the standard intake though and the stupidly small gap in the bonnet where it has to get air from


althou I will give the piping a go for the next 1000km drive I do, seriously I am curious to whether it will help, if I drop below 8's per 100 Ill keep it in there :D

8l/100km I WISH!!! oh well the advantages of going as hard in the wet as in the dry is worth the extra fuel.

PM EZ Boy http://www.aussiemagna.com/forums/member.php?u=1701
he'll fix you up with some cheap but good 90mm flex pipe

Sorry I was comparing this setup to the other type of CAI that runs down the front of the engine and picks up air from behind or below the bumper like this http://www.aussiemagna.com/forums/showpost.php?p=711229&postcount=22 I'm in the middle of a uni assignment and my brain is a bit haywire

The maths is based on the standard intake though and the stupidly small gap in the bonnet where it has to get air from



8l/100km I WISH!!! oh well the advantages of going as hard in the wet as in the dry is worth the extra fuel.

PM EZ Boy http://www.aussiemagna.com/forums/member.php?u=1701
he'll fix you up with some cheap but good 90mm flex pipe

Too easy cheers for the info :D.... Yeah 8 will be possible, fingers crossed, running 8.7 atm :D

Question why does it have to be round??? the original one is rectangular..... isn't it just the area of the opening that matters?

Sorry about the delayed response.... U have kind of figured it out already on your posts above.
Air tends to circulate on the inner surface of such pipe, and if it's round and smooth, it swirls freely and faster. That leads in to improved feed of course.
Looking at the original snorkle set up - makes one thing how does it work at all!!! :D

OK I'm finally finished and happy with my CAI

costs...

100mm rubber joiner from Bunnings ($12 bucks)
90mm Flex FROM EZY ($50)
2 cable ties

Thats it.... easy

Still using 1.5-2 L/100km less since I completed this. before was mid 13's no mid 11's.

It supprised me too.

very worthwhile mod

still dont see how u got mid 13s... i get mid 11, casual, sometimes spirited driving in my KJ rada... thats on every tank... would have to be fairly spirited driving to get mid 13L/100k's

AWD my friend, It's the same when my wife drove it.

tis better now though..

where did you get that flex pipe from?? i need to noe!!! lol

read post 24 of this thread Mr magna

The front-facing CAI makes fuel econ finally bearable for the AWD. Mine is 10.6L atm, with the prototype manifold on I scored a 9.3L over 2 tanks of fuel. Would've liked to have got my extractors on at the same time.

I've only got a few lengths of the CAI TPR ducting left: 2 x 90mm, 2 x 100m and 2 x 114mm. These are all that remains of the podboxes I made 2years ago. Hasn't time flown :coffee:

Glad you're happy with the mod, and most importantly have a tangible result from undertaking it. :cool:

I was pretty pis**d when all this green spiralled pipe turned up at the time - esp since I'd ordered black - but who would've thought it would end up on a green car looking that neat??! lol

Yeah I was pretty impressed with the look of the green too.

thanks heaps

has anyone ever measured the pressure drop in the standard air intake vs cai setup? I would be interested to see some actual numbers. and perhaps the pressures at the pick up points for both set ups?

Well finally got back into town, popped the bonnet, there is absolutly nowhere to mount this pipe in a TH, unless you run under the front bar (pointless)... Ran 8.7 / 100 from brissy to emerald (1100k's)... Ill stick with me original :D

unless you run under the front bar (pointless)

I'll disagree there. I have mine running under the front bar, I just cut a slit in the stone gaurd and used a heatgun to mold the platic into a reverse scoop (creates a suction effect as air flows past). I definallty noticed a difference, plus you are still reducing the pressure drop in the intake pre-airbox.

I have done the same to my cousins AU, also made a differnce to his car and he already had an upsized XR6 scoop.

I am driving from Glod Coast to Brisbane everyday. I use about 7,7lt . Sometimes i got 6,5lt. With speed at about 110-120 km/h. That with the pipe. I think if i was going for longer distance i would use even less.I was driving down to Coffs Harbour for 2 days and back to the Gold Coast on one fuel tank. In total 780km.

I got a TF sedan with a Th 3.5 ltr motor in it. Had a look at the front inlet on the snorkel, and it looks to me as though even though the inlet is narrow, if you were to stretch it out into a circle, its diameter would be atleast the same as where the pipe eventually enters the airbox, if not bigger. I'm thinking that standard might not be tooooo bad. Its directness, ie, straight line of air flow, might also be a positive for it. Would like to remove the 3 plastic spacers that help it hold its shape. They must impede the a/flow a bit.

It's true that, the inlet is restricted by the seals under the bonnet, but to try and get around this, I cut a hole equal in width to the lip of the intake, into the plastic shroud directly below it. The piece of plastic that covers the bonnet latch mechanism. It's by no means ram air, but plenty of cold air should flow, straight through the front grill, and then can be drawn easily up into the inlet. No restrictions at all. Make sense?