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Thread: Scorching Hot Z20LET Cross Over Pipe

  
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    jonathan's Avatar
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    Scorching Hot Z20LET Cross Over Pipe

    Just wondering about the effiency of the cross over pipe. On mine the pipe gets scorching hot after 20 mins . I was just wondering maybe can that heat warm the air up as it goes in to the turbo. ?

    Ive been looking at the 1.9 cdti airbox as this does away with the cross over pipe. But how do you get to the oil dipstick?

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    Turbo Keith B's Avatar
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    Yes it will warm the air up before it goe's into the turbo. The best bet is 2 get rid of it all together & get the 2.2 air box mod. I have had this mod done 4r about a year and a half and it work's brilliantly. And u can still get 2 the dip stick.

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    ADY JONES's Avatar
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    How much differance does it make to the power though ?

    And does it not get hot going through the turbo.

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    Can't give any example of an increase in power as not sure anyone has done before and after rolling roads. But i did it to mine as the crossover pipe used to get very hot on mine. This was mainly before i fitted my FMIC which for some reason or other actually help that keep cool too. But i've done the 2.2 mod and it certainly helps. Less distance for the air to travel = less restriction or fricton.

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    Seems a good efficency mod to do then. Whats the difference betwen the 1.9cdti airbox and 2.2 airbox. Ive tried courtenay and regal, theres nothing about airboxes on their site? Where can you buy them from?

    thanks for the input guys

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    ZS's Avatar
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    I wouldn't worry about it - the throttle body is heated by engine coolant anyway...
    2007 Metro Blue 5 door Mk5 Elite 1.7CDTI
    6th Vauxhall (4th Astra) in 10 years...plus a couple of other sheds...

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    plus the air is gonna go into a hot turbo...... the best thing to do, is just allow the engine to take in as much air as possible......
    Corsa C LEH 4x4?

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    Cone Filter on the end of the turbo it is then

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    Quote Originally Posted by LordNikon
    Cone Filter on the end of the turbo it is then



    cool



    Corsa C LEH 4x4?

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    wiley's Avatar
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    Which brings us neatly onto the age old argument - whether metal power pipes/charge carriers are safer to use than the standard rubber/aftermarket silicone hose? Got to admit the pipe on mine is very warm after driving for a while. I'm told alloy is better at dissipating heat, but I do worry that the post-intercooler charge air is significantly hotter than it would be if it was still running a standard hose?
    Proud owner of a near-standard Arden blue Astra MK4 GSI and a Mallard green Escort Cosworth

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