Sard Injector install write-up...

[jr_ss]

So, since I had a hell of a time installing these and there is no definitive write-up or solid information anywhere on installing these in the SR, I'm going to make one.

Ill be installing Sard's 850cc side-feed injector's into an S14 SR fuel rail.

Items needed:

Sard injectorsOEM SR injector o-ringsSmall pickPhillips and flat screw drivers

I picked Sard 850cc's because of my power goals. Another reason was the Nismo/Tomei 740's are Denso style 1 injectors, where the Sard are Denso style 2 injectors. The Sard's have a faster solenoid, better spray pattern, and lower minimum ms open time, making for a better idle.

First step, is to pull your F/P fuse, start the car and let it die from lack of pressure. Then disconnect your battery. Once the fuel pressure has been bled off and the battery disconnected, you can go ahead and start disassembling your rail. Remove the injector caps with a phillips screw driver. Using a flat screw driver, carefully pry your injectors out. I had this done prior to the Sard install so, I don't have pictures of this step.

Your Sard injectors will come in a box with an inj clip, a collar, a sealed plastic bag with one injector and o-rings in it. I had Taylor Durdan working on my harness so, I let him install the Sard injector clips for me. You'll have to do this yourself. Take notice of how the lower o-ring is fat and the upper is skinny.



Using your pick, carefully remove both o-rings.



This is a comparison of the Sard o-rings on the left and the OEM ones on the right. Notice the difference in sizes. The small Sard o-ring was too fat to let the injector fully seat in the bottom of the rail and the big Sard o-ring was too skinny to even touch the sides of the top of the rail. The OEM o-rings are sitting on their corresponding part number.



Next, you need to take the collars that Sard supplies with the injectors and slide them up on the injector. One side of the collar is flat and the other side has a raised lip. The collars need to be installed as they are in the pictures.



Once the collars are installed, you can install the OEM o-rings. Slide the larger o-ring all the way up to the top recessed area on the injector, right below the collar (there are two recessed area's on the Sard injectors). And install the smaller one at the bottom, where you removed the Sard o-ring.



Now, that you've swapped out the o-rings, and installed the collars, you can install the injectors into the rail. Make sure the o-rings are lubed up with a non-petroleum based lubricant. Petroleum causes rubber o-rings to swell. Slide the injector in and using firm pressure from your thumb's push the injector in. It should go in tight. You may have to use the injector cap to help seat the injector, just tighten them carefully alternating sides.



I installed all my injectors then put on the injector caps. The little rubber bushing that is on the injector cap has to be discarded or the cap will not seat all the way. For the clips, you'll have to do some trimming as part of it hits the rail and will not allow the clip to click into place. I don't have pictures of this part because I forgot to take them. This is what your fuel rail should look like when finished.



I do not take any responsibility or am I liable for anything that happens to you or your car when you install these. This is the procedure I took and I documented it strictly for instructional purposes only. Please be careful and use safety and common sense when working on the fuel system. If you are not proficient working on cars, please have a qualified shop to do so. Thanks and good luck

[sil80_chris]

good write-up it's very detailed and the pics help a lot...