Removing Stock Crossover

[BAturb]

Just a question for anyone who is in the know, why cant the stock cross over, over the engine be replaced with some silicone hose and a couple of joiners rather than using a kit like the plazman for instance, I cant see why not and think it could be done for a fraction of the cost of other after market kits, what are other peoples thoughts? is it worth trying?

[rapidchris]

I dont know how much the plazman kit is but good silicon houses are expensive and you would need a fair bit of it to do the entire crossover

[BAturb]

I was thinking some silicone just to replace the crossover still using the rest of the stock plumbing, or using some straight stainless and some silicone bends, only need a couple of pices about a foot long

[Fat-Tony]

There is no reason why you cant, its called custom pipe work get some stainless pipes or some mild steel pipes, a tig welder, or an oxy (silicon joiners are ment for joining not making whole sections of pipe work) and get cutting and welding, its nothing complicated. Kits are for those who like the ease of a bolt on installation or are unable to fabricate themselves.

[RAP1D]

Not much point in just replacing the crossover section and still using the standard rubber hoses as its the small diamater of the pipes that restricts flow.

Change ALL the pipes for an even, constant diameter will give you better gains.

Your right thinking it wouldnt cost much to replace the crossover section, but performance wise you wouldnt notice any benefits... if you remade the pipe from IC to TB you would definatly see some benefits

[Fat-Tony]

Allan, work on changing the pipe from cooler to x-over section so you can rid the car of that pathetic pipe that runs under the headlight

[BFHOON]

like this. the stock underbattery pipe is gone tossed in the bin where it belongs.

[BAturb]

if I was going to go to all that expense I would take out the intercooler and cut the 90` bend of the return pipe and weld it on the other way, move the air intake to the front drivers wheel well and change the piping to the throttle body, I was just thinking that it may be possible to change the cross over to some straight pipe and a couple of silicone bends for under say $250, it might be a reasonable budget mod for those who dont have a money tree in the back yard, and even though it may still use the stock plumbing, I would have thought changing the cross over to round pipe would flow better than whats there from factory, I can see maybe some testing and pricing of components might be in order, you never know we might be pleasantly suprised

[BFHOON]

the factory cross over isnt really that bad.

the main restriction in the stock system is from the cooler to the throttle body.

mainly the under battery pipe.

im working on a factory xover cut and welded to look like an aps unit, with the turbo intake removed and the inner devider removed to incerase the inner space of the xover for boost only and the air filter off the turbo.

[Fat-Tony]

  BAturb said:

if I was going to go to all that expense I would take out the intercooler and cut the 90` bend of the return pipe and weld it on the other way, move the air intake to the front drivers wheel well and change the piping to the throttle body, I was just thinking that it may be possible to change the cross over to some straight pipe and a couple of silicone bends for under say $250, it might be a reasonable budget mod for those who dont have a money tree in the back yard, and even though it may still use the stock plumbing, I would have thought changing the cross over to round pipe would flow better than whats there from factory, I can see maybe some testing and pricing of components might be in order, you never know we might be pleasantly suprised

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Custom pipe work aint that expensive, depends on the path you undertake to get it. I myself am fortunate enough to know how to weld and would be able to say do custom pipe work in mild steel for $250 odd, really depends on what silicon hosing needs to be used as that's the expensive part. Last car I piped up it cost me 120 odd dollars in silicon hose, think I spent 20 on clamps, and well about 120 on pipe work. XR might be less might be more, depends on the path you choose to run your pipes, id rather keep mine stock looking, makes more than enough power for me atm.