Sinister Blue spring kit - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 17 (permalink) Old 11-27-2017, 05:38 PM Thread Starter
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Sinister Blue spring kit

Is anyone running sinisters adjustable blue spring kit? This is the next DIY mod I plan on doing and I like the idea of it being adjustable in case I do future mods that will require more Fuel PSI. Product number below.

SD-FUELBLK-6.0-ADJ

'06 F350,SRW 4X4, 4 door, LB, Sinister EGR cooler, Sinister coolant filter, Studded, Live Wire SCT
'97 F250 SRW 2WD LB (Under Construction)
'72 F250 2WD, 390 Fuel injected (Under Construction)
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post #2 of 17 (permalink) Old 11-30-2017, 07:23 AM
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Re: Sinister Blue spring kit

I've never even heard of it. Gonna have to check this out!

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post #3 of 17 (permalink) Old 12-03-2017, 12:52 PM
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Re: Sinister Blue spring kit

This is a ford upgrade. If you order the parts from Sinister Diesel you will get a Ford parts kit sent to you. I didn't notice much of a change other than slight easier start when cold
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post #4 of 17 (permalink) Old 12-08-2017, 02:20 PM
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Re: Sinister Blue spring kit

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Originally Posted by philp55 View Post
This is a ford upgrade. If you order the parts from Sinister Diesel you will get a Ford parts kit sent to you. I didn't notice much of a change other than slight easier start when cold
not quite... they do have a kit that you can adjust the pressure with a screw to either increase or decrease the the PSI, they advertise it as this so as the spring wears down, you can keep cranking on it so you dont have to disconnect everything and instal a new one, their kit specifically has a Sinister billet plate.

IMO id rather do a regulated return, for the sinister kit you are paying 1/3 of a better kit and then also you can do the fuel bowl delete all together as long as you have an aftermarket fuel pump like an airdog or FASS system.

also to do a regulated return i would also recommend having an aftermarket fuel system, if you dont plan on major modifications then just go with the sinister kit with the adjustable set screw.

2004 F-250 Lariat 6.0L, crew cab, 2006 motor swap, white w/ gray interior, SCT X4, 4'' down pipe with 5'' to a stack, 325/65-18 nitto terra grapplers, air rad intake, egr delete, studded and deleted, FASS System ([email protected]) with sump, 190/100% Swamps Diesel Injectors, atlas 80 PHP FICM, RCD rods, DDPM lifters, Turbo Lab of America turbo.
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post #5 of 17 (permalink) Old 12-08-2017, 03:40 PM
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Re: Sinister Blue spring kit

or go OEM and skip the adjustable
i can't see the need for it ? I have had the OEM blue for years and FP is 60/70 depending on how cold the fuel is

then again I am a fan of the OEM fuel pump as well unless you have big injectors

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post #6 of 17 (permalink) Old 12-08-2017, 03:41 PM
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Re: Sinister Blue spring kit

sinister Adjustable cover


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post #7 of 17 (permalink) Old 12-08-2017, 07:18 PM
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Re: Sinister Blue spring kit

Seems like a waste and overkill to me. You pop in a new OEM blue spring, and itís good for years. If you really have the need to keep cranking that adjustment screw in, then you have bigger issues than a weak spring. 60-70 psi is more than enough for 95% of the guys out there driving these things. I donít know if huge injectors even need more than that, but if they did, youíd have a small fortune invested in that truck, it would be most likely a dedicated track truck, with a big fuel system to support them, and the last thing youíd be doing is buying some cheap Sinister piece of crap and expecting it to do anything realistic.

Put in a factory blue spring, and never look back. If you get a pressure drop after that, then you have a weak pump, or itís sucking air somewhere.


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Reg return
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post #8 of 17 (permalink) Old 12-11-2017, 12:04 PM
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Re: Sinister Blue spring kit

Quote:
Originally Posted by 6speedSD View Post
Seems like a waste and overkill to me. You pop in a new OEM blue spring, and itís good for years. If you really have the need to keep cranking that adjustment screw in, then you have bigger issues than a weak spring. 60-70 psi is more than enough for 95% of the guys out there driving these things. I donít know if huge injectors even need more than that, but if they did, youíd have a small fortune invested in that truck, it would be most likely a dedicated track truck, with a big fuel system to support them, and the last thing youíd be doing is buying some cheap Sinister piece of crap and expecting it to do anything realistic.

Put in a factory blue spring, and never look back. If you get a pressure drop after that, then you have a weak pump, or itís sucking air somewhere.


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well said, i have 190/100%'s but with a FASS system and i am pushing 85psi at idle and 70-75 driving and 70 WOT and this is with the 'blue spring' no regulated return yet. i dont see any benefit of the sinister kit other than it looks nice on the filter housing while being mostly covered up anyway... and if one is trying to crank up the PSI on fuel pressure, you might as well get regulated return due to it being the best bang for the buck IMO... we dont drive old 12v cummins where you can get a little more power and smoke show by cranking up the PSI on a fuel pressure regulator.....

2004 F-250 Lariat 6.0L, crew cab, 2006 motor swap, white w/ gray interior, SCT X4, 4'' down pipe with 5'' to a stack, 325/65-18 nitto terra grapplers, air rad intake, egr delete, studded and deleted, FASS System ([email protected]) with sump, 190/100% Swamps Diesel Injectors, atlas 80 PHP FICM, RCD rods, DDPM lifters, Turbo Lab of America turbo.
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post #9 of 17 (permalink) Old 12-18-2017, 01:51 PM
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Re: Sinister Blue spring kit

Does anyone know if the Edge Insight CTS2 will monitor fuel pressure through OBDII or do you have to have an add on probe like the EGT monitoring ? I can't seem to find this answer on Edge website...

Thanks,
Dan
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post #10 of 17 (permalink) Old 12-18-2017, 02:07 PM
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Re: Sinister Blue spring kit

There is nothing in the factory system on these trucks that monitor fuel pressure. Youíll either need a mechanical gauge, or an electric sender thatíll screw into the test port on the base of the upper filter housing (one under the hood). Iíve never used the CTS2, but Iíd imagine they sell the add on sender to read FP.


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2005 F350 CCLB Dually
Studded, deleted
5" straight piped
155/30's
KC Stage 1.5
Reg return
Beans sump to the stock pump
BPD FICM
Tuned by several...depends on my mood for the day.
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