VCO vs SAC injectors

[K-Sons]

Ok I hope I am not the only one that don't know what the difference is between the VOC & SAC injectors. Can we get some explanation and maybe some pics to help guys like me on this?

Thanks guys.

 0 Comment(s)

[IGOTACUMMINS]

@AccurateDiesel?

Ask us how to become a Lifetime Platinum Member today!

 0 Comment(s)

[AccurateDiesel]

Hi!
I would be happy to shed some light on this. I'm trying to find a good picture I can use - that will make the process a lot simpler. Hope to be back shortly.

 0 Comment(s)

[AccurateDiesel]

Found a nice picture!

SAC vs VCO.jpg
Books could be written on nozzle design - here are some quick points on the two designs:

VCO - Stands for "Valve Covers Orifice". The VCO nozzle is generally less expensive. It also tends to be less durable, particularly in high-heat performance applications. In the VCO design, the nozzle needle must individually seal each spray orifice in the nozzle tip. If sealing is compromised at even one spray orifice you get leakage and smoke issues.

SAC - Refers to the "Sac" area below the nozzle needle - a small reservoir of fuel that remains below the nozzle needle after closing. In the SAC design, the nozzle needle seals to the nozzle body above the spray orifices. The SAC design is popular for performance applications because it is more durable and because there is more material in the tip, so it is safer to enlarge the spray orifices with less danger of excessive weakening. If the SAC area is large the SAC injector can have higher emissions than the VCO nozzle.

 0 Comment(s)

[Diesel Dawgs Performance]

We carry Ducky Fuel Injection Injectors and Chris builds both SAC and VCO injectors. He prefers SAC style due to them being more durable and accurate. Nothing wrong with a good set of VCO injectors for the money. Until you get into really large injectors you can't really tell a difference.

Luke
www.dieseldawgs.com
lukesdiesel@yahoo.com

 0 Comment(s)