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Forced Induction
VS 78/75 2.5" cold side

Forced Induction Superchargers | Turbochargers | Intercoolers

VS 78/75 2.5" cold side

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Old

Mar 11, 2021 | 05:02 PM

#1

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From: woodbine, md

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VS 78/75 2.5" cold side

Curious if anyone has used 2.5" on the cold side vs. 3"-I thought some of the early ones were 2.5".
I wonder if up to 10 PSI there wouldn't be much diff.

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Mar 11, 2021 | 05:09 PM

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Perfectly fine for nonrace app at low boost.

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Mar 12, 2021 | 09:01 AM

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Black_Sunshine_99

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Lol at up to 10 psi.
"I'm just gonna keep it on low boost, don't need a lot of power" said no one ever who runs a turbo.

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Mar 12, 2021 | 10:57 AM

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It’ll work fine even in race conditions. I have twin 7875’s with 2.5” cold side feeding intercooler. At 37# it made 1380rwhp.

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Mar 12, 2021 | 10:59 AM

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Quote:

Originally Posted by badass68

It’ll work fine even in race conditions. I have twin 7875’s with 2.5” cold side feeding intercooler. At 37# it made 1380rwhp.

You have a 2.5" pipe from each 7875 to the FMIC I imagine? What about from the FMIC to the TB?

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Mar 12, 2021 | 05:01 PM

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Yep. 3.5” from intercooler to Tb.

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Mar 12, 2021 | 05:05 PM

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Quote:

Originally Posted by badass68

Yep. 3.5” from intercooler to Tb.

That makes more sense.

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Old

Mar 14, 2021 | 06:29 AM

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From: woodbine, md

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I ended up using 3", it was going to be a tight fit, but 3 Walker # 41221's and some short straight and I made it fit.
Temp not running an IC'er, at a latter date I will address that.

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