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FPR Shim Alternative?

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Old Apr 1, 2008 | 11:39 AM
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From: SE Wisco
FPR Shim Alternative?

I really don't know much about the FPR shim, but I thought I would toss this out there for an alternative. LINK It just seems like a handy deal and at $20 not too bad of a price. I don't know how to do the original mod, but it may save some work???
 
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Old Apr 1, 2008 | 12:33 PM
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I did the mod a while back, I did it for free. I'm not saying its a bad idea. Just that $24.81 with shipping is a lot for a little spring. I guess if need to replace a weak spring.
 
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Old Apr 1, 2008 | 01:08 PM
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there is a write-up on 7point3.com and all the guy used was a screw i beleive. what exactly does the shimming do?
 
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Old Apr 1, 2008 | 01:10 PM
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shimming ups the fuel pressure so you have more fuel available under load, such as towing up a hill.
 
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Old Apr 1, 2008 | 01:14 PM
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oo alrite thanks for the clarification.
 
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Old Apr 1, 2008 | 03:11 PM
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Originally Posted by mongo75
shimming ups the fuel pressure so you have more fuel available under load, such as towing up a hill.
Under all conditions, not just under load. However, the amount of fuel pressure you have is not really adjustable. You can get it into a rough ballpark but not exactly where you want it. I'd skip it and get a Regulated Return with the better fuel pressure regulator.
 
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Old Apr 1, 2008 | 09:01 PM
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Originally Posted by aklim
Under all conditions, not just under load. However, the amount of fuel pressure you have is not really adjustable. You can get it into a rough ballpark but not exactly where you want it. I'd skip it and get a Regulated Return with the better fuel pressure regulator.
I think I may be headed towards DFA's regulated return. I guess only time will tell.
 
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Old Apr 1, 2008 | 09:40 PM
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Originally Posted by sflem849
I think I may be headed towards DFA's regulated return. I guess only time will tell.
They are NOT a regulated return. There is no real regulator. Basically joining the heads together. It is a CCK. Cackle Cure Kit. You still use the same stock regulator, good, bad or ugly. DI has a regulated return that feeds the back of the heads first. ITP has a nicer looking RR that feeds the front of the heads first. Those are Regulated Return kits. I'd spend the real money for the RR before I dump $120 into a CCK and later decide I might want to go with the RR
 
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Old Apr 1, 2008 | 10:14 PM
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From: SE Wisco
Originally Posted by aklim
They are NOT a regulated return. There is no real regulator. Basically joining the heads together. It is a CCK. Cackle Cure Kit. You still use the same stock regulator, good, bad or ugly. DI has a regulated return that feeds the back of the heads first. ITP has a nicer looking RR that feeds the front of the heads first. Those are Regulated Return kits. I'd spend the real money for the RR before I dump $120 into a CCK and later decide I might want to go with the RR
Jason is working on a complete replacement fuel system with regulated return. Bdrummons is running the prototype IIRC.
 
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Old Apr 1, 2008 | 10:40 PM
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Originally Posted by sflem849
Jason is working on a complete replacement fuel system with regulated return. Bdrummons is running the prototype IIRC.
So far, ITP is the best I have seen. If there was an option that would not have interfered with the BTS Big Oil, that is what I would have gotten.
 
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Old Apr 1, 2008 | 10:44 PM
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Originally Posted by sflem849
Jason is working on a complete replacement fuel system with regulated return. Bdrummons is running the prototype IIRC.
Ahh, Jason is working on a newer version of the system i am running. It will have an adjustable regulator IIRC. Mine does not have the adjustable regulator, I have to switch out orifices, or turn up the pressure on my pump.
 
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Old Apr 1, 2008 | 10:55 PM
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I dont think I would run the spring simply because it is set at such a high pressure..I want mine more at 68-70 not 95-110
 
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