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Author Topic: Aftermarket Cold Air Induction  (Read 10021 times)

Offline GTMartin

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Re: Aftermarket Cold Air Induction
« Reply #15 on: April 17, 2012, 09:01:09 am »
I used some of this on a previous car.

http://design9114-px.rtrk.co.uk/fu/prod4701/Blower-Hose-Porsche-911-1965-89/ 

The outer layer is an asbestos type material which should prevent the engine heat warm up the incoming air.

AbarthForum.co.uk

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    Offline kingabe

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    Re: Aftermarket Cold Air Induction
    « Reply #16 on: April 17, 2012, 05:53:12 pm »
    Any idea on cutting metal to gain access for this? Extra strengthening
    FABIO! A500, red, black leather, BMC, K&N "pop off", TMC box,
    EBC discs, Green stuff pads, 17" petals, not a happy car atm

    SixDegrees

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    Re: Aftermarket Cold Air Induction
    « Reply #17 on: April 17, 2012, 07:34:26 pm »
    I think it was proven that the air pressures much higher up near the scuttle compared to the intercoolers, plus less chance of puddle issues  ::)

    Odd, that for VAG cars the CAIs are usually places low down in the inner arch where the air is coolest.  Not worried about air pressure per se as its forced induction, so really only care about the temp of the air.

    Totally understand the risk of water getting into the engine, but careful location so that there is no immediate route for air to get in would be a key consideration.

    i just don't fancy cutting anything structural, a simply pipe to where there is some cool air is the best bet.  Did this on a wee 1.4L Polo I had a few years ago, worked a treat in the warmer days.  Just took it off when it got too cold.

    Offline Griffs998

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    Re: Aftermarket Cold Air Induction
    « Reply #18 on: April 17, 2012, 07:55:24 pm »
    Pressure is important even for a forced induction motor. If the filter is sighted in a low pressure area the turbo has to work harder to offset this loss which in turn increases the temperature and lowers the efficiency of everything. Roland the maker of the GTT/TMC induction kit explained why he designed his setup as he did. This is unfortunately absent from the forum now as he is no longer a trader but i remember him saying the filter didnt suffer from heak soak (accompanied by a detailed explanation) and also said the position of the filter under the skuttle area was in a positive pressure zone - i dont think the cost savings of another set up offset the likely poorer performance and fiddling that you will incur

    SixDegrees

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    Re: Aftermarket Cold Air Induction
    « Reply #19 on: April 17, 2012, 10:24:44 pm »
    On a car with 135hp, I don't see any of this making a jot of difference.

    Offline corsa

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    Re: Aftermarket Cold Air Induction
    « Reply #20 on: April 17, 2012, 10:30:41 pm »
    Griffs, good explanation and for what it's worth, I totally agree with all of your comments :thumb:

    On a car with 135hp, I don't see any of this making a jot of difference.

    If so, why participating on this thread or actually looking at such an upgrade? ??? ::)

    Offline simonwwf

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    Re: Aftermarket Cold Air Induction
    « Reply #21 on: November 10, 2021, 09:58:01 am »
    Does anyone know the dia of pipe required please

    Offline mj2k

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    Re: Aftermarket Cold Air Induction
    « Reply #22 on: November 10, 2021, 10:23:37 am »
    It does strike me the Abarth's turbo inlet side is a bit inefficient, the factory inlet could draw warm air from the engine compartment which means the intercoolers have more work to do lowering charge temperature than they need to, and the convoluted intercooler pipework running just beside the cat, going to a pair of side-mounted intercoolers doesn't look terribly efficient, especially when there's a fair old chunk of spare 'real estate' just behind the extended nose.

    Might have to look at the inlet side when / if I decide mine needs more power (need to actually get it roadworthy first, and make the most of the handling before fiddling around with power levels). I reckon fitting a cold air intake and front mount intercooler in that spare nose space should be the first step before even changing the default IHI turbo; there's probably a fair few spare horses to be released purely by doing that, along with a decat (assuming that doesn't cause emissions issues).

    Offline simonwwf

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    Re: Aftermarket Cold Air Induction
    « Reply #23 on: November 10, 2021, 04:54:32 pm »
    Is the pipe dia size required 70mm

    Offline mj2k

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    Re: Aftermarket Cold Air Induction
    « Reply #24 on: November 10, 2021, 05:15:03 pm »
    Is the pipe dia size required 70mm

    Shouldn't matter tbh, just measure whatever's there. As long as it's not narrower (and therefore more restrictive) than the diameter of the turbo's compressor inlet it won't make the blindest bit of difference on a forced induction system once the turbo's spooled... It won't make the turbo do more work and will have negligible affect on spoolup times, the speed / volume of the exhaust gases flowing into and out of the turbine affect the turbo's efficiency, not the inlet diameter (assuming it's not restrictive) seeing as the air's sucked in rather than flowing under it's own steam (like it would be on a normally aspirated car).

    Offline a3Jeroen

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    Re: Aftermarket Cold Air Induction
    « Reply #25 on: November 12, 2021, 02:42:39 pm »
    Too bad all the pictures in this thread seem to have vanished into thin air (Pun intended).
    I think mine could profit from a little colder air sucked in.

    gr J

    Offline mj2k

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    Re: Aftermarket Cold Air Induction
    « Reply #26 on: November 12, 2021, 06:38:56 pm »
    Once I've got mine roadworthy I might have a go at making one, looks like all the professionally available ones involve making a hole in the scuttle, but I'd have thought it would be simple enough to route it out through the front panel instead