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s4 TURBO to s5 TURBO swap (not engines)

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Old 07-07-08, 07:52 AM
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s4 TURBO to s5 TURBO swap (not engines)

I tried searching but all i could find among the clutter was engine swaps.

Basically my question is will an s5 turbo+manifold bolt right onto an s4 turbo engine fine, without having to do any modifications except plugging up the twin scroll system?
Old 07-07-08, 09:04 AM
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Yes. If you have the series five turbo oil drain line with the S5 turbo assy you have. I *think* there's a difference b/t S4 and S5 oil drain line lengths.
Old 07-07-08, 02:37 PM
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The S5 line is a little longer since the turbo sits slightly different and the front cover is a little different too. Using the S5 line should work, but there may be a little more of a bend than if you had the S5 cover.

If it still doesn't fit with the S5 line, bolt the S5 turbine housing onto the S4 turbo and run it like that.
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