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Old 12-10-2009, 10:26 PM   #1
subypal
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Question FMIC piping made from silicone only

Is it possible to run a FMIC system with silicone only? Of course I'll use some metal to connect the silicone straights, bends, etc together.. But I like the light weight properties & thermal resistance silicone offers.. just curious if anyone has done this and if there is any negatives I'm overlooking.

thanks!
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Old 12-10-2009, 10:32 PM   #2
Brother EddieJ.
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Never heard of that, but it would probably be super expensive. One way of getting better cooling than silicone is to get the pipes ceramic coated. Bet that would work better.

The silicone under high boost would probably expand too much

Last edited by Brother EddieJ.; 12-10-2009 at 10:43 PM.
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Old 12-10-2009, 10:34 PM   #3
chazly413
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Shiny metals (i.e. polished and smooth) are pretty good at reflecting heat. The differences would be negligible. Most of the piping isn't going near that hot of stuff, at least when you compare the rest of the engine bay to the turbo.
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Old 12-10-2009, 10:52 PM   #4
toconn
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I actually doubt that a switch to silicone is going to save you much in the way of heat or weight. And the fact that it's not nearly as rigid as metal could mean trouble when you're running high pressure through the tubing...
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Old 12-10-2009, 11:28 PM   #5
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The hose will probably expand and collapse with boost and vacuum. If you really, really want to do it then be sure to use reinforced hoses.

There are reasons people and manufacturers use hard pipes.
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Old 12-10-2009, 11:34 PM   #6
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Interesting, I was thinking about the expansion and collapsing myself. I like the idea of silicone though, it will be easier to work with and probably cheaper than having custom FMIC piping welded up. I'm going with reversed manifold fyi. I will do some pricing and see what I can come up with, and post it here
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Old 12-10-2009, 11:41 PM   #7
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Uhhh... aluminum piping is cheap and mandrel bending is too. For elbows I agree a strong reinforced silicone hose will be ok. But my buddy popped his hose at 25psi, after we used t-type hose clamps to keep it from popping off
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Old 12-10-2009, 11:48 PM   #8
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Well I added up the parts needed, and this is the manifest to complete silicone FMIC piping for reversed manifold
type qty cost
90 = 7 = $118.93
45 = 4 = $67.88
straight = 1 = $49.99
joiner = 12 = $95.88

TOTAL= $332.68
Didn't bother to figure in the clamps.. it's already too much.. and that's with out shipping.

I think I might just piece it together myself, and do like imma_stocker says and just buy aluminum piping and have it mandrel bent to my spec, then have it welded instead of silicone coupled together.
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Old 12-10-2009, 11:51 PM   #9
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I loled at the idea.

you'd probably lose a few PSI just to the silicone expanding slightly.
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Old 12-10-2009, 11:54 PM   #10
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^ He wouldn't lose total PSI once it's done expanding (no leaks hopefully), but the period of time from the silicon pipes at their initial state to full expansion would definitely create some lag, just not sure how noticeable that would be.
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Old 12-11-2009, 12:33 AM   #11
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Quote:
Originally Posted by chazly413 View Post
^ He wouldn't lose total PSI once it's done expanding (no leaks hopefully), but the period of time from the silicon pipes at their initial state to full expansion would definitely create some lag, just not sure how noticeable that would be.
True. It may eventually blow out the silicone as well, that is a lot of surface area. Any imperfection in the silicone would be stressed a lot...

This is the reason that people use aluminum with silicone connectors.
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Old 12-11-2009, 01:20 AM   #12
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You were going to use seven 90's?
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Old 12-11-2009, 01:56 AM   #13
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You'd basically be spending way more money for a far inferior setup...
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Old 12-11-2009, 02:15 AM   #14
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Post #13712 of the GC thread in the gallery looks like silicone inter cooler piping by APS. Could PM him.
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Old 12-11-2009, 02:43 AM   #15
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Some stock cars come with sylicon piping from the factory (DSMs). Theres a reason people pay to upgrade to metal. Alluminum isn't very heavy, and as previously stated, if you're overly concerned about heat, why not get them ceramic coated, or heat wrap your piping?
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