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Engine Specific Info and Questions => IDI Engine => Topic started by: Gizmoman on October 07, 2012, 09:09:35 am

Title: Long rubber hose to boost gauge - curious
Post by: Gizmoman on October 07, 2012, 09:09:35 am
Would the boost gauge pressure reading (at my dash) be higher (more accurate) if I used hard plastic line instead of the current soft rubber hose?
The application is a Vanagon and there's probably about 25 feet of hose from the turbo to the gauge.

Seems like all that rubber would lower the pressure - any thoughts?
Title: Re: Long rubber hose to boost gauge - curious
Post by: R.O.R-2.0 on October 07, 2012, 10:24:07 am
Would the boost gauge pressure reading (at my dash) be higher (more accurate) if I used hard plastic line instead of the current soft rubber hose?
The application is a Vanagon and there's probably about 25 feet of hose from the turbo to the gauge.

Seems like all that rubber would lower the pressure - any thoughts?

25psi is 25psi wether its rubber hose, or steel brake lines..
Title: Re: Long rubber hose to boost gauge - curious
Post by: Gizmoman on October 07, 2012, 10:49:53 am
Thanks, I tend to over-think stuff.
Title: Re: Long rubber hose to boost gauge - curious
Post by: pointynoggin on October 07, 2012, 10:04:56 pm
Pressure loss in a hose or pipe is due to friction so when there is no flow there is no pressure loss.
Title: Re: Long rubber hose to boost gauge - curious
Post by: mystery3 on October 07, 2012, 10:49:00 pm
If the hose were blowing up like one of those long thin balloons that clowns form into animals and whatnot your boost gauge reaction would be less than accurate however the peak number would still be accurate.