1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

injectors

Old May 7, 2009 | 10:11 AM
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will 300hp injectors off a 94 fit a 93 12v
 
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Old May 7, 2009 | 12:49 PM
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they will fit in the hole but they will not work in the truck. The pop Pressure is to high and the injector lines from teh pump will not fit.
 
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Old May 7, 2009 | 02:07 PM
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Originally Posted by jhase
will 300hp injectors off a 94 fit a 93 12v
You can take the tips off the 2nd gen injectors and put them on the 1st gen injector bodies.

The 2nd gen tips have a different spray angle, so the truck would smoke all the time, but there will be no harm done to the engine.
 
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Old May 7, 2009 | 02:27 PM
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Originally Posted by '91 Cummins
You can take the tips off the 2nd gen injectors and put them on the 1st gen injector bodies.

The 2nd gen tips have a different spray angle, so the truck would smoke all the time, but there will be no harm done to the engine.
how dose that work???? if the engine is designed to have a certain spray and you swap patterns and it hits the cylinder wall instead of the pre comb i think that would cause damage over time and it seams like it would lack performance due to combustion either to soon or too late
 
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Old May 7, 2009 | 03:13 PM
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Originally Posted by big bad diesel 416
how dose that work???? if the engine is designed to have a certain spray and you swap patterns and it hits the cylinder wall instead of the pre comb i think that would cause damage over time and it seams like it would lack performance due to combustion either to soon or too late
its not enough that it hits the cyl walls. Most of your aftermarket injectors for 1st gens have a spray angle set up for 2nd gens. Some times they haze a little at idle. Sometimes not. They only way around it is to spend the big bucks and get a set coustom made for a 1st gen. and as far as combusting to soon or to late that has more to do with timing then spray pattern. Even the famed PODs for the 1st gen have a spray pattern that is off for the 1st gens. Thats why they run so hot and dirty.

And if you swap nozzles remember you are still going to have to pay someone to reset all your pop pressures.
 

Last edited by RSWORDS; May 7, 2009 at 03:15 PM.
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Old May 7, 2009 | 03:17 PM
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Originally Posted by big bad diesel 416
how dose that work???? if the engine is designed to have a certain spray and you swap patterns and it hits the cylinder wall instead of the pre comb i think that would cause damage over time and it seams like it would lack performance due to combustion either to soon or too late
Nope, no engine damage at all. Brian Block runs 2nd gen 370 tips on his 1st gen tow rig, and has had them on for over 200K miles now. With an HX40, mild pump tuning and a piston lift pump, he made a little above 300rwhp.

They may make a "tiny" but less power than a set of 1st Gen 370's, but not worth the price difference in my opinion. If I wanted huge power, i would have a set of 6X.016's anyways.

Tye only downside is they haze all the time. Like POD's...

---AutoMerged DoublePost---

Originally Posted by RSWORDS
its not enough that it hits the cyl walls. Most of your aftermarket injectors for 1st gens have a spray angle set up for 2nd gens. Some times they haze a little at idle. Sometimes not. They only way around it is to spend the big bucks and get a set coustom made for a 1st gen. and as far as combusting to soon or to late that has more to do with timing then spray pattern. Even the famed PODs for the 1st gen have a spray pattern that is off for the 1st gens. Thats why they run so hot and dirty.

And if you swap nozzles remember you are still going to have to pay someone to reset all your pop pressures.
Unless you know Brian Block.
 

Last edited by peobryant; May 7, 2009 at 03:17 PM. Reason: Automerged Doublepost
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Old May 7, 2009 | 03:22 PM
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yeah knowing Brian would be a plus.
 
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Old May 9, 2009 | 05:48 AM
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you can get the adapters to run the 1st gen lines on the 2nd gen injectors from a few places, and most diesel shops wont charge that much to reshim the injectors.....
 
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