4 - 2.5 inch reducer.

CaptainNate · Postby **CaptainNate** » Mon Oct 22, 2012 4:54 am

Hi all!

Just wondering if anyone knows where I could get my hands on a 4 inch to 2.5 inch silicone reducer within our lovely country?
I've been googling for hours, and have only come up with one or two options from overseas.

I've asked around at my local car supply stores, all of them kind of looked at me like 'Are you some mad scientist?'.
It has come to my knowledge that pipes/reducers are not made in these sizes for the widespread market.

I've sent an enquiry about a unit from ajdmparts in the states, asking if they ship to Australia. (Fingers crossed)
http://www.ajdmparts.com/index.php?page=shop.product_details&category_id=565&flypage=tpflypage.tpl&product_id=2271&option=com_virtuemart&Itemid=53&vmcchk=1&Itemid=53

I'm not super informed when it comes to these sorts of things, so if you're laughing please feel free to move along

Any informative information and linkys would be appreciated

Hope you all enjoy your Monday!

vrmmmpshhh · Postby **vrmmmpshhh** » Mon Oct 22, 2012 8:22 am

Autobarn Is where I got the majority of my silicon hoses. If they don't have it I'm sure they can get it.

Mr Morlock · Postby **Mr Morlock** » Mon Oct 22, 2012 8:36 am

I would first tackle the question what do you want to do? Why and is there another solution. If you cannot find a source then in all likelihood there is no demand or another solution- I suspect the latter. Not even sure why silicone is the choice. The reduction you are talking about is quite significant and over what length? 90mm is a big pipe. Pipes and hoses are made to standards or specific models and I getting one custom made I would of thought is no easy undertaking. Clarks might be able to give a lead but doubtful. Pipes and hoses are also made to different constructions- a radiator hose is completely different to a ducting etc.

hks_kansei · Postby **hks_kansei** » Mon Oct 22, 2012 10:32 am

I think the best bet is either to have the piping changed so you have a 2.5" outlet on whatever you're using (instead of 4")

Or, have a solid reducer made up and then connect with a 4in straight joiner at one end, and a 2.5in straight at the other (not ideal, but easier than getting the whole lot re-done)

The other option is, if you're feeling a little dodgy, to go to bunnings and buy a white PVC reducer.

If it's only for the intake, it should work fine. (I just sanded mine back and painted it so it looks like the OEM plastic)

If it's for somewhere where it needs to withstand high pressure/heat/solvents, then it may not be the right choice.

Postby **NitroDann** » Mon Oct 22, 2012 10:38 am

You can have a stainless reducer made if you have to, I can make them for example, but it would cost near 100 dollars. But they are gorgeous.

Im guessing its a pod filter down to an intake pipe.

Dann

93_Clubman · Postby **93_Clubman** » Mon Oct 22, 2012 11:01 am

If it's for cold air intake consider only reducing to 3" - many are that diameter.

CaptainNate · Postby **CaptainNate** » Mon Oct 22, 2012 1:27 pm

Yep, its cold air. The style you have to cut a hole in the back wall. The setup I have now is super rice and I need to fix it haha.

I started off with a PVC reducer, but i couldnt get the damn thing to stay on the simota filter (I tried a number of things)

So I now have a 4 - 3 reducer that my mate hacked up so it fit snuggly on the 2.5 pipe leading to the rear. We then just wrapped the two pipes with heat tape hoping for it to look better, but it didnt.

I refuse for my five to be rice like my last car. Haha

Also, Strut braces can be a pain in the rear.

hks_kansei · Postby **hks_kansei** » Mon Oct 22, 2012 1:35 pm

In that case I can 100% recommend the bunnings reducer.

It's what I have, and it's worked faultlessly for a few years now. The only thiing is you'll need to glue the reducer to the filter housing (mine isn't and vibrates loose. Doesn't fall off, just shifts slightly)

As for rice, I simply sanded down the filter housing, the reducer, and the pipe then gave them a few coats of high temp satin black paint so it looks the same as the crosspipe finish.

CaptainNate · Postby **CaptainNate** » Mon Oct 22, 2012 1:54 pm

I was tempted to glue, but i decided against it at the time. Hearing that, I shall go do that now

thankyou!

I might try and find a longer adapter peice for the AFM, as the filter housing is rubbing on my strut brace - thats probably the cause of this damn problem.

But hey, I bought the five to learn these things

hks_kansei · Postby **hks_kansei** » Mon Oct 22, 2012 2:02 pm

Remember though, my setup is hard plastic against hard plastic.

Yours sounds like hard plastic and silicone? correct?

I'm not sure there's much that will stick to silicone.

aka_juffa · Postby **aka_juffa** » Mon Oct 22, 2012 6:33 pm

You can also give this mob a try.

http://www.spareco.com.au/home.php

They have offices in Melb and Syd.

If you can't find what you are looking for on their web site give them a call.....they have a lot of knowledge and I have found them to be very helpful.

J.

Gladiator · Postby **Gladiator** » Mon Oct 22, 2012 6:59 pm

So you've got a cold air intake & a strut brace? I'd love to see it. I have a strut brace but no CAI as I didn't think it would fit. I wouldn't mind catching up to see how you fitted a CAI in. I'm wondering if the distance between the filter and the AFM might be critical? ie: will too long an adapter piece affect how the car runs? Perhaps someone can answer that, (But remember, there's no such thing as a stupid question).

Andrew

CaptainNate · Postby **CaptainNate** » Mon Oct 22, 2012 10:53 pm

hks_kansei wrote:Remember though, my setup is hard plastic against hard plastic.

Yours sounds like hard plastic and silicone? correct?

I'm not sure there's much that will stick to silicone.

I still have the PVC reducer laying about on my workshop bench, just in case

Gladiator wrote:So you've got a cold air intake & a strut brace? I'd love to see it. I have a strut brace but no CAI as I didn't think it would fit. I wouldn't mind catching up to see how you fitted a CAI in. I'm wondering if the distance between the filter and the AFM might be critical? ie: will too long an adapter piece affect how the car runs? Perhaps someone can answer that, (But remember, there's no such thing as a stupid question).

Andrew

I'll throw some pics up after I work a few things out (It'll probably have to wait til payday

). But yes, I was just going to ask about the distance between the filter and the AFM.

If I could extend the distance a tad, things would fit perfectly.

Another question; does the position of the AFM change anything? For instance, if the AFM was moved further towards the rear or closer to the front?