Running water/meth injection? Check your FPR spring! Carnage inside.

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01-02-18, 11:43 PM

#26

Redbul

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FPR Spring Rate

How do you check the condition of the spring in a stock FPR?

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01-03-18, 01:59 AM

#27

billyboy

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Quote:

Originally Posted by Redbul

How do you check the condition of the spring in a stock FPR?

No way to visually inspect, short of destructive. You could infer the state of it with some sort of test rig......hand pump to simulate boost and read the resulting increase in fuel pressure.

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01-16-18, 04:01 PM

#28

FourtyOunce

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Simple fix is get an SS spring, like the one supplied with FuelLab FPRs.

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