High Pressure Crossover Hose? - Ford Powerstroke Diesel Forum
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Old 06-19-2011, 02:46 PM
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High Pressure Crossover Hose?

Does this really make a difference in the quieting the motor noise?
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Old 06-19-2011, 02:58 PM
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high pressure crossover

I installed one on my 7.3 and at 50mph+ it has made a considerable differance with the engine noise. I don't really notice a big differance at lower speeds or while idling. However I did manage to blow both the o rings that came with the kit I ordered from strictlydiesel.com. I replaced them with ford o rings and have not had trouble since.
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Old 06-19-2011, 03:10 PM
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Yes it can quiet the engine. I put the crossover on both of the last 2 7.3 trucks I've had and it helped. Idle noise was lowered alot on my 99. My 01 was quieted down a little bit. Both of mine came from ITP Diesel and I was happy with the fit and finish of both.
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Old 06-19-2011, 04:30 PM
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I didn't really notice any difference for sound, BUT:

It makes the rails have even pressure, allowing the ICP to read both rails, and allows for better oil flow/pressure to the #8 cylinder.... helping it NOT run lean. (Not burn up the cylinder or the injector.) I think mine was $60 ish, I got the braided stainless steel line made by Tymar Performance.

I know CT Performance/Carey has them.
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Old 06-19-2011, 04:58 PM
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Mine definitely quieted down the engine.
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Old 06-19-2011, 05:09 PM
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What ToMang07 said! I bought Riffraff solid line stainless steel HPX. I may have noticed a little difference, but I know the two oil banks have been equalized!
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Old 06-20-2011, 04:12 AM
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Mine idles a little smoother but noise level isn't that noticeable. But... cold morning starts is where I noticed the most difference. Being in Texas not really sure if it would get cold enough to notice. I'm talking below 35 degrees.
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