Measuring air pressure in engine bay

[Slide]

Some things should be simple, and I found myself over thinking this one.

I?m trying to figure out how to measure how much air pressure is building up in the engine bay... to determine if I have enough exit space.

Anyone have a suggestion for a way to measure the pressure? Aside from engine coolant spiking lol!

[will6er]

Get a low pressure gauge and run a hose into the engine compartment. You could use a homemade manometer if the gauge doesn't go low enough.

Will Willis
#6302 XOGC

[Scott]

Google magnehelic gauge.  SB

[Slide]

Huge thank you. I had thought about a small 0-5 psi and I think I once found a 0-3 psi of unknown quality gauge.

I was going to put it in his engine bay with a go pro and video the reaction.

But that magnehelic gauge is inexpensive enough and seems to be able to find a quality one at a decent price to do it right.

This is going to be interesting because there are a ton of things I want to measure. That and air flow. That?s the next measurement thing I need to sort.

Air flow and pressure...

[tortoise]

I?m trying to figure out how to measure how much air pressure is building up in the engine bay... to determine if I have enough exit space.

If the pressure turns out to be high, what makes you think adding exit space would make you go faster?

[Slide]

Well, stopping an engine from overheating, or a transmission from overheating would be one way to go faster.

A cooked engine and trans goes slower than a non cooked engine and trans.

[Dynoroom]

Well, stopping an engine from overheating, or a transmission from overheating would be one way to go faster.

A cooked engine and trans goes slower than a non cooked engine and trans.

So you are going to use a radiator?......

[Slide]

Yes

[DallasV]

Huge thank you. I had thought about a small 0-5 psi and I think I once found a 0-3 psi of unknown quality gauge.

I was going to put it in his engine bay with a go pro and video the reaction.

But that magnehelic gauge is inexpensive enough and seems to be able to find a quality one at a decent price to do it right.

This is going to be interesting because there are a ton of things I want to measure. That and air flow. That?s the next measurement thing I need to sort.

Air flow and pressure...

I highly recommend getting a digital DP gauge. Analog magnehelix gauges are very delicate.