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Home > Technical Chat > Turbo spool up - log manifold vs over the clutch

NDT

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Member #: 11884
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Has anyone got any direct experience of what spools up quicker, the fusion fans log manifold or the over the clutch one?
I mean same engine, same turbo.


Mr Joshua

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Luton Bedfordshire

The closer the turbo is to the head the less heat loss so better performance from the turbo. That's the theory.

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theoneeyedlizard

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7263 Posts
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The Boom Boom speaker Police!

Essex

I have had both a short manifold down the back and long over the clutch on my car with everything else being the same. Both were homemade rather than off the shelf.

I can’t say that I noticed a single bit of difference when it came to how quickly the turbo came on between them.

In the 13's at last!.. Just


stevieturbo

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Northern Ireland




On 26th Apr, 2024 NDT said:
Has anyone got any direct experience of what spools up quicker, the fusion fans log manifold or the over the clutch one?
I mean same engine, same turbo.


Really not as simple as one or the other.

Manifold design, tube diameters etc etc.

Although in the case of such a tight engine bay, I'd doubt there would be a huge difference either way, as space is limited, compared to picking the right turbocharger which will affect spool and overall performance.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

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