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Kirkham Motorsports

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Old 07-09-2018, 09:05 PM
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Quote:
Originally Posted by Gaz64 View Post
I would think about adding a fuel pressure gauge, just for testing, in the cabin.

The reg could be referenced to the hat, so fuel pressure would be say 6 at idle, to 12 under boost.

Where as to manifold vac, it would be say 3 at idle, 6 at zero vacuum, and then 12 etc.

Depends on your current vacuum at idle, (camshaft), and how much boost you are running.

You could also reference the regulator T'eed with an adjustable bleed to the carb hat, then can you dial up what your fuel pressure curve is separately to boost.

Gary
For safety, any fuel pressure gauge in the cabin can be either electrical or mechanical. If the latter it s/b connected through an isolator so there's no gasoline in the cabin if a line leaks.

Isolators: https://www.summitracing.com/int/sea...sure-isolators
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Old 07-10-2018, 12:59 PM
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Any particular one you recommend?
Quote:
Originally Posted by cycleguy55 View Post
For safety, any fuel pressure gauge in the cabin can be either electrical or mechanical. If the latter it s/b connected through an isolator so there's no gasoline in the cabin if a line leaks.

Isolators: https://www.summitracing.com/int/sea...sure-isolators
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Old 07-10-2018, 09:53 PM
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I like the Autometer electric stepper motor fuel pressure gauges.

https://www.autometer.com/gauges/ult...ofile=products

Not cheap, but you get what you pay for.
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Old 07-11-2018, 10:16 AM
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Any particular one you recommend?
I have an Autometer mechanical with an isolator. It worked fine until I had to disconnect, then re-connect the tube from the gauge to the isolator. Since then the readings have been a bit erratic. It looks like I'm going to have to sort out what I did wrong and re-do the d**m thing.
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