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Old 02-09-2010, 12:09 AM   #41
StainlessRRA

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Originally Posted by GOT-Torque View Post
I can't wait to hear if it works for you. If it does, it will save me a ton of cash...
I'll be sure to keep you updated, I'm damn excited to see how my truck reacts. Once I get it figured out the head is coming off for some serious machine work, and I'm ditching all the twins piping in favor of a mid sized single and spray. Should be fun!
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It would have helped if the picture didn't look like a Helen Keller Painting.
 
Old 02-09-2010, 09:45 PM   #42
StainlessRRA

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Bump. I'm still curious what % over stock flow those 6.7 injectors were that made 760hp.
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Old 02-21-2010, 11:07 PM   #43
srt cummins

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so 65 percent better flow what does that equal to sorry im not that smart with injectors. can u hone to 200hp injectors ?
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Old 02-22-2010, 12:07 AM   #44
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im not sure im following? A 04.5 injector has narrower spray angle in a wider bowl. A '03 or a 6.7 has a wider spray angle in a narrower bowl. I will be putting a aftermarket forged piston in with a wide and shallow bowl similar to the 04.5. So it should not matter which injector i use, they should all spray in the bowl with out any issues? Am i correct? It will be a 6.7 bottom end with the injectors to be announced.
 
Old 02-22-2010, 09:14 AM   #45
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The issue isn't whether or not fuel is sprayed within the bowl confines - it's the direction of flow which determines the flame front's travel.

If your aftermarket pistons resemble 600 series 5.9L slugs (they have domes, right? ) you should use non re-entrant style injectors, as the early CR & 6.7L bowls are designed for a re-entrant pattern injector.

Yes, the engine will run if you mix spray & bowl angles.
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Old 03-08-2010, 09:14 AM   #46
StainlessRRA

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Originally Posted by Hamilton Cams View Post
I try to run the 6.7 injectors on all of my builds these days 5.9 or 6.7l. I have not had a single one fail in about 2 years of service or rather 2 years of straight abuse. On the 04.5 and up guys I machine .040" off of the head to put the injector deeper in the bowl and they work fine with the piston design, hold downs and the electronics. All of the ones I have tried OHM out to the same resistance as 5.9 injectors even if the actuator is different the function is the same. They are without a doubt the cleanest performance injector I have seen. On the H2 vs. 181/210 comparison I used the 6.7l injectors on an '06 5.9l with an E.D. 66mm with an external gate. Fuel wise it had a smarty tnt-r, mp-8, and a bag of parts. It ended up making 760 I think after some tuning. And btw after the initial spoolup it was smoke free!
Well I've had a few headaches, did you use longer bolts for the 6.7 hold downs? Or just the factory ones?
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Old 03-15-2010, 12:14 AM   #47
StainlessRRA

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Do not run these injectors until I figure out just why my motor melted down. It ran away on start up and now has no compression.
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Old 03-15-2010, 01:20 AM   #48
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Do not run these injectors until I figure out just why my motor melted down. It ran away on start up and now has no compression.
Ohh dam Kyle. When did this happen? I want pictures lol.
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Old 03-15-2010, 07:11 AM   #49
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Do not run these injectors until I figure out just why my motor melted down. It ran away on start up and now has no compression.
ouch! That's not good news..
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Old 03-15-2010, 10:49 AM   #50
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Ohh dam Kyle. When did this happen? I want pictures lol.
Saturday. I'll have pictures up for all to see when it comes apart.
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Old 03-15-2010, 10:56 AM   #51
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CRS(common rail syndrome) strikes again. That sucks.
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Old 03-15-2010, 04:56 PM   #52
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Sorry to hear about your misfortune. I have had some injectors that had trash in them hang open in the past. I don't think it is fair to say don't use these injectors though. I have used these in a number of trucks and currently use them in my '05 with absolutely no issues. Did you have them tested prior to putting them in?

Zach
I'm not saying not to use them, I just wanted to put the warning out there until I get mine apart and can figure out what went wrong. I just don't want another guy to have the same kind of melt down I did. With that being said I'm pretty convinced it was a turbo blow out and has nothing to do with the injectors.

Zach, have you ever put a 6.7 head on a 5.9 block?
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Old 03-15-2010, 10:11 PM   #53
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Any idea what size hole those ended up having?
 
Old 03-15-2010, 10:59 PM   #54
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Would the 6.7 head be worth the trouble to swap, or am I better off porting the stocker? I think I am staying around 700hp.
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Old 03-16-2010, 07:54 PM   #55
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The 6.7 head looks similar to the '06 heads as far as port size which is a good bit better than the 03. If you can score one cheap, that is what I would do. Also I have seen less problems with the seats over the 03-04 heads over the later models.

Any news on the cause of the meltdown?

Zach
It's in the shop now. Head's coming off thursday and we'll see what happened.
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Old 03-18-2010, 06:08 PM   #56
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It's in the shop now. Head's coming off thursday and we'll see what happened.

I can tell you already what happened......

The hold downs for the injectors bottom out under the bolts and need to be machined down for clearance.

The injectors were not held down properly, and in that case backflow fuel from the injectors could get past the copper washers and there's your runaway.

The engine stopped once the backflow was burned up.

So you can thank the one who told you you don't need to clearance those hold downs.........
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Old 03-18-2010, 10:19 PM   #57
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Do not run these injectors until I figure out just why my motor melted down. It ran away on start up and now has no compression.

To add salt to the wound pretty sure its not going to fire those injectors anyways....

I swapped one in tonight (along with modifying the hold down) and NO JOY.

I think Zack's full of chit, the current profile of the CRIN3's has to be quite a bit higher.
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Old 03-21-2010, 08:42 PM   #58
StainlessRRA

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There was alot of fuel sitting in the bowls, alot. We're still really confused but I'll keep you up dated.

Click the image to open in full size.

Click the image to open in full size.
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Old 03-21-2010, 08:44 PM   #59
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Click the image to open in full size.
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Old 03-21-2010, 09:43 PM   #60
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Can you give us a close up of how far the nozzle sticks through the head?
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