PDA

View Full Version : Dual Feed Injectors???


BigYellowIron
05-20-2010, 10:32 AM
What is everyones thoughts on dual feed injectors?
I have heard that it is well worth it and I have heard that it is a waste of time.
This would be for a big rpm puller.
Lets discuss.

j-rod
05-20-2010, 10:53 AM
To state the obvious, at "big rpm" there is less time to get the fuel down to the cylinder, so I would think dual feed would be worth it. $.02

Smokem
05-20-2010, 11:00 AM
A better nozzle will make more power than an extra passage in the body.

BigYellowIron
05-20-2010, 11:05 AM
Can you eloborate a little for me Weston ???

quarterman
05-20-2010, 11:18 AM
Dual feed is needed with a big nozzle you need to do the math if your nozzle holes add up more surface area than your feed hole then dual feed would benefit you but can also enlarge the existing hole also.

Smokem
05-20-2010, 11:22 AM
If you use a larg sac volume nozzle on a stock body, it will produce greater power than a VCO nozzle with dual feed passages.

JerrodGlover
05-20-2010, 11:40 AM
What about a dual feeding the body for a Large Sac Nozzle?

Smokem
05-20-2010, 11:45 AM
I still wouldn't waste the time or effort, at that level go to an S type nozzle with a larger holder.

j-rod
05-21-2010, 10:38 AM
If you use a larg sac volume nozzle on a stock body, it will produce greater power than a VCO nozzle with dual feed passages.

So that is another vote against a VCO nozzle in a competition application. Do they have any pro's other than being cleaner on the street or is that also a common misconception?

Smokem
05-21-2010, 10:41 AM
From what I have seen, depending on the sac volume, a blind-hole nozzle can be as efficient, if not more efficient in a street application as a VCO nozzle. Point being, there is no advantage to using a VCO nozzle.

j-rod
05-21-2010, 10:42 AM
Point being, there is no advantage to using a VCO nozzle.

That is what I was wondering. Thanks.

Delinquent
05-21-2010, 10:52 AM
Ok...I have a set of 5x14's by JL. They are good injectors, but I feel that I could use just a tad bit more fuel. In your opinion, would it be wirth it to dual feed these? Or should I go ahead and move up?

Smokem
05-21-2010, 10:58 AM
If I feel it is fruitless to dual feed a 5x0.018", why would I suggest dual feeding a 5x0.014", especially once you take into account the cost?

Todd W
05-25-2010, 09:21 PM
where does one get these large sac nozzles?

not enoughsmoke
05-25-2010, 09:43 PM
whats a good big set of nozzles for a ve i am looikn at a set of 5x17s