Extrude Hone vs. EDM

So should people run more VOP on an EH nozzle all else constant to get similar "crispness" out of them?
 
Mudn_1 said:
well I first like my EH's, they seemed fairly clean and ran pretty well! the truck had a bad lope (hrvp) and started getting pretty dirty after a while, these EH made descent powa (485) for 150's! these were over a set of jammer 2's which anything is probably better quality! so I pulled them and 2 were pissing and they were all around 260-270bar:bang, and the rest....well somewhere around 5-6 six of the holes were actually firing! so i sent them off and had them flowed, and they were all out of wack, anywhere from right around stock to roughly 20% over! looked like some of the holes were clogged up with material from the honing process! so we threw them in the trash and.....

about 2 months later weston built me a set of 7x010's with .015" lift and .015" stroke, and holy **** are these things crisp, clean, and damn if they ain't making some power! the truck idles smooth, and only a slight haze at startup for about 5min, spools around 200rpm sooner, hits a hell of a lot harder and is just all around easier to drive on the street! my 24v got quiet too! honestly, I don't know if I will ever buy an EH again, but timbeaux's truck sure is running good so i dunno! I want to dyno see apples to apples (7x.010" vs EH 150) or just go to the track! oh yeah, egts seem the same and boost is up a little!
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That just sounds like bad work..... and im not sure how there could be hone material left in there esp after you have a bunch of miles on them.

Charles said:
So should people run more VOP on an EH nozzle all else constant to get similar "crispness" out of them?
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VOP ?
 
jsf350 said:
Thanks-
So how would you increase the pressure?
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different springs or shims, the EH company that built mine sets theres low around 280bar due to excessive fuel return???? but mine were about 260?
 
Charles said:
So should people run more VOP on an EH nozzle all else constant to get similar "crispness" out of them?
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It depends, most times if the nozzle is not firing cleanly, it won't really matter. I just exchanged a set of 5x0.010" VCO 260BAR for a set of 5x0.010" micro-blinds 300BAR, all of them fired well, big difference off idle.
 
Also, be sure to ask when purchasing a set of EH nozzles, what the flow rate is and the allowed tolerance in percentage. If you get an answer of higher than 8LPM or 3%, go elsewhere.
 
Mudn_1 said:
different springs or shims, the EH company that built mine sets theres low around 280bar due to excessive fuel return???? but mine were about 260?
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The pintle itself can b used to alter popoff , thats how mine are
 
The pintle can be ground to lower the opening pressure, but it cannot raise the opening pressure. Also, doing this will decrease the amount of vertical travel of the pintle before it contacts the stroke-limiting collar, which is usually opposite of what is desired in a performance application.
 
Mudn_1 said:
different springs or shims, the EH company that built mine sets theres low around 280bar due to excessive fuel return???? but mine were about 260?
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This DOESNT APPLY to CR INJECTORS Correct?

Smokem said:
Also, be sure to ask when purchasing a set of EH nozzles, what the flow rate is and the allowed tolerance in percentage. If you get an answer of higher than 8LPM or 3%, go elsewhere.
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i agree- Jim @ extrude hone in PA says when they flow/enlarge the nozzles they are within 1%
 
Smokem said:
The pintle can be ground to lower the opening pressure, but it cannot raise the opening pressure. Also, doing this will decrease the amount of vertical travel of the pintle before it contacts the stroke-limiting collar, which is usually opposite of what is desired in a performance application.
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I swaped jons out for stock pintles and lost 500 lbs ,jon told me he does both depending on app on how he can set pop , i dont think it hurt my performance they barly haze if any and i tore the engine apart and with 34 deg there on the edge of the bowls still usesn 60 washers
 
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Pintles vary in length, there is no way to add opening pressure by altering the pintle. You could lap the nozzle down to raise the opening pressure, but again you lose vertical lift. I either adjust the shim thickness or face the injector body to dial in the pressure, 0.001" is ~ 5BAR.
 
Smokem said:
Pintles vary in length, there is no way to add opening pressure by altering the pintle. You could lap the nozzle down to raise the opening pressure, but again you lose vertical lift. I either adjust the shim thickness or face the injector body to dial in the pressure, 0.001" is ~ 5BAR.
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What process do you use on the injectors you sell?
 
I have ran a set of DDP4s which are an EH injector on my 12 valve. They were a very clean injector with good power.

I have just installed a set of SDX 5x.014" .010" lift 280bar as per Westons specs.

Now the difference is the SDX seem to come on quicker than the DDPs (spool up is quicker and less take-off and WOT smoke).
I would also say they are the same as far as how clean they run when warm.
JMO guys.
 
Got my SDX 5x.014/.015 lift/280bar tossed in yesturday.... WOW

After dealing with my leaking stock injectors with 276,xxx miles on'm i'm amazed by how well this thing runs...

Awsome work boys.
 
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