90 degree injector line fitting causing restriction?

I was told this weekend by several people that these Enderle 90 degree fuel line fittings are known for causing restriction and the 90 degree bend in them (they are drilled from both ends, no radius in the bend) can cause air bubbles to be created. Has anyone else seen this? These fittings make my hose routing much cleaner and compact, but if they are going to cause problems I will change them.

 

Thats the reason my system don't have them,
This is something someone once said'
forgot his name,

( DON'T CONFUSE THE FUEL!)
( ONE WAY IN, ONE WAY OUT!)


http://www.youtube.com/watch?v=Rc8DNswFohA

Before anyone says anything, think first, the rails,
line's #8 are flood'ed with fuel

 

It would depend on the nozzle jet size. If you have a very large single port setup with nozzle size above .070, it might cause problems. Jim at Enderle could tell you what the 90* fitting flows.

 

Mike with rage fuel systems changed my straight hoses to 90 deg nozzles when he re- flowed my system. On his flow bench it showed no diff in quality of fuel delivery. I had the same doubts but the 90 deg fittings make for a cleaner system. He also said the the right angle an fittings from xrp are the same way, even though they are drilled it made no diff over the bent fittings. We moved my blower back two more inches and it changed distribution but the nozzles were not a factor.

 

I am using them on all of my nozzles. My idles are .042, 2nd stage is .060, and 3rd stage .072. Thank you for the information. Currently my tune up is pretty close using the 90 degree fittings, so I will likely keep using what I have.

 

Think that your system is creating air to mix with the fuel? mybe you are on to something, may be your turning you alky into nitro. LOL

 

That's what mike at rage said also Bill ,,as long as port nozzles are kept below 85 he never saw a diff in flow. He has run 90 deg fittings on fuel motors before.

 

Will i just made 16 (Enderli fittings) port lines, I checked them for size, and they were all differint' between 0.116 to 0.118
That said i reamed them all to the same size, 0.135. I also belive that all the lines should be the same lenth (Friction causes heat in the fuel) longer the line the more heat,
might be the same flow but not the same heat. I gess I think like the old lady that pissed in the sea, every little bit helps. lol
Gene Terenzio Sr.

 

Some people have said that those 90° fittings in the picture can cause air bubbles, I personally do not believe that.

Do you think that is possible?

 

The reason I got for the 90's was that they are safer. Less stress than straight rubber or bent , flared stainless. Billes, Rage, ERD, DMPE all seem to like the 90's on their systems now.

 

Once Upon a Time.......

A fellow named George wanted to put fuel into the head right above the valve because it had no place to go in the manifold, he used Kinsler 90* into the head.
I believe it went very well for him, I remember him kicking asses of every TAD in the country at least once !

 

you are right Bob.....they definitely kicked everyones ass at least once. man that car hauled....bare bones car....not even an extra zip tie.

 

Fittings

If the 90deg causes these problems why do some return fuel to the bottom of the pump???

 

I have to agree with Mike that a hard 90* will cause a restriction in flow but as long as after the 90* it flows more than the nozzle it's feeding and doesn't cause a cavitation , what's it matter?