Are they capable? - Ford Powerstroke Diesel Forum
Non-Powerstroke General Discussion General Discussion for 6.9L and 7.3L IDI (Non-Powerstroke) Engines

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post #1 of 17 Old 07-17-2009, 01:49 PM Thread Starter
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Are they capable?

Ok. this is different. i am designing new heads for the 7.3L IDI to make a conversion kit to make them DI's for those who love their old trucks. Are the IDI injectors capable of running as a DI? will they create a usable atomization? I mean it wont just squirt a kinda solid stream? i will have new nozzles made or just honed them out if needed. also how much boost can these injectors handle without failing?
thanks for any info. jacob

Last edited by cc.DieselRacer; 07-17-2009 at 02:05 PM. Reason: mistake
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post #2 of 17 Old 07-17-2009, 02:07 PM
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Sounds like a big but fun project good luck.

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post #3 of 17 Old 07-17-2009, 04:59 PM
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Well, good luck. Do you have access to a lot of high end equipment? You will basically have to design a whole new set of heads. If you have somebody do it for you, its going to be a HUGE amount of money to do. But if you have access then have at it.

The stock injectors should be good. I know a guy who makes good aftermarket injectors, none of that DPS garbage.

Good luck and keep us posted.

-Justin-
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post #4 of 17 Old 07-17-2009, 05:00 PM
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sounds like a huge project but if you can make that work you might be able to make some huge power out of that beast!!!

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post #5 of 17 Old 07-18-2009, 06:38 PM Thread Starter
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I dont have high end stuff but my uncle has a molding kit id use if i make ''new'' heads which ive now decided not to do. Instead i want to make the metal mixture and fill in the swirlchamber removing the glowplugs and injectors from the original spot and placing the glow plugs in the intake and the injectors after alot of drilling and tapping, either in the origal spot just go all the way to the chamberor or in the gap between the valves/rockers(its gonna be tight) or on the exhaust side of the head in a slight angle to spray directly on the piston.

i would love for this to work but i don know if it will work but itll be fun!
also will 7.3 powerstroke pistons fit an 7.3IDI? ill use trubo IDI C-rods. if i have to i will mill the pistons down to lower the comp.

becuase if it does work itll receive twins! haha
Thanks for the replies

Last edited by cc.DieselRacer; 07-18-2009 at 06:48 PM.
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post #6 of 17 Old 07-18-2009, 06:48 PM
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it would be better to tap the head to accept cummins injectors seeing they are capable of more hp and a p-pump from a 8 clyinder international


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post #7 of 17 Old 07-19-2009, 09:14 AM
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You cant put the injectors or glow plugs to far into the combustion chamber. IDI heads are flat, and the pistons usually stick out of the block something like .0030", so the only gap you have is your head gaskets. Which is not much....

Powerstroke pistons wont work. You can use turbo IDI rods and low compression Mahle pistons (plus more milling to lower it more). You cant mill to much off the top of the pistons as it will get to close to the rings and they will fail in time. There is a number of how much you can take off but I forget it.

-Justin-
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges

2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
1997 Passat B4V TDI. 1 of 80 imported in 97. 50 MPG and a factory 25 gallon fuel tank!
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post #8 of 17 Old 07-19-2009, 11:35 AM Thread Starter
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Dang. well the glow plugs i would put in the intake but with the injectors i was thinking just have the tip barely exposed just enough to get a decent spray outof anywhere in the chamber to get the direct shot but flat with the head mostly.

So do you guys know anyone who makes custom pistons for a decent price?

maybe if someone could make me some pistons with the bowl/cup (like P-Strokes) instead of the swirlchamber relief it would work.

oh and Blowinsmoke4life, id use the people most of you hate, DPS get their 20HP injectors with their high performance IP. so i dont think i need dodge injectors to do this if i have that much fuel going to the cylinders. Just a thought.
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post #9 of 17 Old 07-19-2009, 11:39 AM
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Quote:
Originally Posted by FordGuy100 View Post
You cant put the injectors or glow plugs to far into the combustion chamber. IDI heads are flat, and the pistons usually stick out of the block something like .0030", so the only gap you have is your head gaskets. Which is not much....

Powerstroke pistons wont work. You can use turbo IDI rods and low compression Mahle pistons (plus more milling to lower it more). You cant mill to much off the top of the pistons as it will get to close to the rings and they will fail in time. There is a number of how much you can take off but I forget it.
di heads are flat as well. and the pistion head allows the injector and gp to stick through the head.

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post #10 of 17 Old 07-19-2009, 12:09 PM
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mebe its the beer, but this ****s' over my head.

Si vis pacem, para bellum

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