Riff Raff RFx?
Senior User
Joined: May 2010
Posts: 178
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From: Spring Valley, CA
It's a nice piece and a very clever idea on how to return our engines to the original design by International that was altered by Ford bean counters. I have one sitting on my workbench to be installed ASAP. Unfortunately, my entertainment is not a priority for my work or my family.
The "gain" you will have is knowing that air can finally pass thru and out of the fuel rails in each head without passing thru your injectors.
Hope that helps your questions.
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Senior User
Joined: May 2010
Posts: 178
Likes: 0
From: Spring Valley, CA
This mod was also done years ago by some of the guys on the old forddiesel.com site now known as thedieselstop.com. Clay simply has put it into an eloquent kit form.
Buy it.
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Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
The FRx really seemed to quieted up things under the hood, noticably quiet. I'm not hearing that no# 8 injector knock I used to hear and just smoother idle and exceleration, really a worthwhile mod. Clay hit a homerun with this setup. One thing to consider, use some somewhat thick wire loom or heat or fire resistant wire loom on your hoses, I used some thin wire loom and one of my hoses rubbed a oil line from the vibrations and was scrubing the loom and went thru starting to scrub the FRx hose, so just do it as a precaution, loom is fairly cheap insurance.. Another thing too I need is a fuel pressure gauge, thats coming next when finances allow. If you can swing it, get that too, very good to have.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
It's a machined block that bolts in place of the stock fuel regulator cap. The regulator still works the same. The new block and hoses let a very small amount of fuel out of each head and return it to the return fuel line after the pressure regulator. Since the return orifice is small, it doesn't need to have a regulator or be before the regulator.
It's a nice piece and a very clever idea on how to return our engines to the original design by International that was altered by Ford bean counters. I have one sitting on my workbench to be installed ASAP. Unfortunately, my entertainment is not a priority for my work or my family.
The "gain" you will have is knowing that air can finally pass thru and out of the fuel rails in each head without passing thru your injectors.
Hope that helps your questions.
It's a nice piece and a very clever idea on how to return our engines to the original design by International that was altered by Ford bean counters. I have one sitting on my workbench to be installed ASAP. Unfortunately, my entertainment is not a priority for my work or my family.
The "gain" you will have is knowing that air can finally pass thru and out of the fuel rails in each head without passing thru your injectors.
Hope that helps your questions.
And I get to brag that is was my idea!
Clay and I talked about the design of it before he brought it to market.
Here is the picture of the very first prototype design that is still installed on my truck 5 years later.
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Joined: Sep 2003
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From: New Baden IL
Dan,
If we ever get to Seattle to visit my wife's brother & family.....I'm going to make it a point to visit your shop just to meet you and shake your hand! I look at every response you provide because they're ALWAYS valuable! God Bless! V/r Les
If we ever get to Seattle to visit my wife's brother & family.....I'm going to make it a point to visit your shop just to meet you and shake your hand! I look at every response you provide because they're ALWAYS valuable! God Bless! V/r Les
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From: Central Coast of CA
Stewart
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Junior User
Joined: Jun 2010
Posts: 63
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That is a perfect description of what the crossover does.
And I get to brag that is was my idea!
Clay and I talked about the design of it before he brought it to market.
Here is the picture of the very first prototype design that is still installed on my truck 5 years later.
And I get to brag that is was my idea!
Clay and I talked about the design of it before he brought it to market.
Here is the picture of the very first prototype design that is still installed on my truck 5 years later.