Is alky injection ever used on a diesel engine. I have it on my Grand National and I know the science behind it for a gas engine but is it an option for a diesel engine?

Yes, it's pretty common in heavily modified "enthusiast" turbodiesels. Does the same thing, reduce intake and exhaust temps in order to allow more boost safely.

Dan

_________________

2005 Silver CRD Limited
245/75R16 GoodYear Duratracs
Fumoto drain | ProVent CCV Filter
Stanadyne FM100 filter | Cummins fuel pump
GDE Eco | SEGR | BoulderBars | FrankenLift | Frankenskids

Keep in mind that diesels are a compression ignition engine. With that said remember that anything that goes into the engine that is flammable is subject to ignition while on the compression stroke BEFORE the fuel actually gets there from the injector (meaning timing has nothing to do with this since its not controlled like the injection even). Resulting in increased cylinder pressure Early, and sometimes before TDC= higher stress on rods/crank/wrist-pin and so on. Most of the time your safe if your using a reasonable amount of water:alk But the higher you go the more risk you will take. So keep this in mind when/if you do add it on. A 20hp increase on a 160hp engine is huge compared to a 20hp increase on a 250hp engine.

I will probably never run water/meth. If i ever do anything it will be WATER only and it will never be put on the jeep I'll keep that for my puller, I'll let the fuel make the HP not an additive, although you will gain HP with water alone due to the cooling of the intake temps along with the extra oxygen thats in the water being injected.

Has anyone installed any water/meth kits on their crd's?

_________________
06 crd, straight pipe, EHM,
99 f250 7.3l powerstroke sled puller, All kinds of goodies.
79 2.3 turbo mustang hatch
88 5.0 vert (blown, but soon to be TT stroker)
66 f100 project.
01 cbr 929rr

Every single engine,diesels included,ignite the fuel/air mixture a few degrees before TDC anyways.

[/quote]
Every single engine,diesels included,ignite the fuel/air mixture a few degrees before TDC anyways.[/quote]


its not even worth my time.....

_________________
06 crd, straight pipe, EHM,
99 f250 7.3l powerstroke sled puller, All kinds of goodies.
79 2.3 turbo mustang hatch
88 5.0 vert (blown, but soon to be TT stroker)
66 f100 project.
01 cbr 929rr

Yeah, but I think it will ignite in a high compression diesel more then "a few degrees before TDC"?

_________________
20 year owner of Libby CRD!
2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

see I knew the glow plugs did something

_________________
No longer a CRD or Jeep owner. Selling everything I have, needs to go as I need the room for a project.

if but alky..you me mean alcohol injection..as in methanol..

sure its possible..just the Cummins forums look for performance in 03 and later engines..

my dumb question of the day is why?
a liberty is LAST car I would want to race..
not that I would want to race a dodge pickup either..but some want power/HP/Torque for pulling..a form of racing..but not at speeds.

you could also think about propane injection..

but I still get caught on WHY? are you racing a Liberty?

-dkenny

_________________
84 BB school bus, DD8.2L turbo ->the transmission died..too expensive to fix..it'll be heading to the scrap yard..4/11)..Bus gone to Scarp 8/23/11
06 Liberty CRD
'99 dodge ram 2500 quad cab, 4x4, 24v
all Biodiesel powered when its warm enough

Propane injection is just more fuel added, nothing more. On the OLD diesels, they had injectors that are very crude by today's standards and could not atomize the fuel very well and make use of all the oxygen, so the fuel had to be cut way back to reduce smoke, adding propane would provide extra fuel to make use of the oxygen with out adding a lot of smoke so the horse power and torque could be increased. That is why it was called a "Torque Topper".
Since our CRDs have much better common rail injectors, turbo chargers, and inter-coolers; you are better off investing in a Tune and exhaust enhancements. Besides where are you going to mount a propane cylinder on a CRD?

_________________
2006 Pearl Green CRD
Magnaflow 2 1/2" Cat Back
KJ Extra Leg Room Brackets, Carter Lift Pump, V6 Airbox, ORM
Fuel cooler, Oil Separator, Progard 7
Gauges EGT Boost Trans Temp Oil Pres, Michelin LXT AT2 245 70 R16
7,000# Draw Tight hitch, PML EX Deep Trans Pan
Centrifuge, SunCoast, Transgo, RAM TCM, InMotion Stage 2
Wife's 99 TDI VW Beetle

if by alky..you me mean alcohol injection..as in methanol..

sure its possible..just the Cummins forums look for performance in 03 and later engines..

my dumb question of the day is why?
a liberty is LAST car I would want to race..
not that I would want to race a dodge pickup either..but some want power/HP/Torque for pulling..a form of racing..but not at speeds.

you could also think about propane injection..

but I still get caught on WHY? are you racing a Liberty?

-dkenny

_________________
84 BB school bus, DD8.2L turbo ->the transmission died..too expensive to fix..it'll be heading to the scrap yard..4/11)..Bus gone to Scarp 8/23/11
06 Liberty CRD
'99 dodge ram 2500 quad cab, 4x4, 24v
all Biodiesel powered when its warm enough

I will not use it on the CRD. I have no reason too. I just thought it would be a good conversation piece. Turns out I was right. . I run "off the shelf" denatured alcohol (alky) in my GN and I can tell a huge difference when it kicks in even without turning the boost up. I love the stuff in that car. I just didn't know if it was even an option in a diesel. Thanks for the responses guys.

Your point of of ignition is when the fuel is injected into the combustion chamber,your pump is "timed" like a old distributer on carbed gas engines.

Real diesels don't have glowplugs.

Really?
Bc the way I see it you've loved the Fords 7.3 and new 6.7 both have glowplugs.

_________________
GONE-2003 Liberty Freedom Edition-GONE

2011 LTZ CrewCab Z71 4x4 Silverado.
Steel Green Metallic.
2" Leveling Kit.
33" Mastercraft A/T-2
Ranch Hand Grille Guard.
Black Low Profile Kobalt Tool Box.
Front & Rear Huskey Liners.

The 6.7 has no glowplugs.

add my DD 8.2L turbo to the no glow plugs list..and no intake heaters like the Cummins either..

NOTHING!!

it used to have a block heater but the first time I tried to use it I got lots of sparks..then I tried to find where is connected into the block..I would have to pull the engine to fix..yep..its still broken..if its that cold..i just stay home..with wd40 its good to start to about 15F. if the biodiesel/diesel blend is right.

-dkenny

_________________
84 BB school bus, DD8.2L turbo ->the transmission died..too expensive to fix..it'll be heading to the scrap yard..4/11)..Bus gone to Scarp 8/23/11
06 Liberty CRD
'99 dodge ram 2500 quad cab, 4x4, 24v
all Biodiesel powered when its warm enough

Ya no.

_________________
http://www.Colorado4Wheel.com
"Its not about what you can DO with your Jeep, its about where you can GO with your Jeep."
Knowledgeable - But Caustic

Every light duty diesel engine -- Duramax, Ford 6.7L Scorpion, VW 2.0L/3.0L, BMW 3.0L, Mercedes OM642 3.0L (I'm sure I forgot something...) all have glowplugs.

Only the Cummins 5.9/6.7 uses the grid heater exclusively in this segment.

My John Deere with the 3 cyl Yanmar uses the intake grid heater so I can say I have at least one real diesel. The other 4 wanna be diesels are gassers in disguise

_________________
20 year owner of Libby CRD!
2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

What constitutes a real diesel? It seems a 'real' diesel is a medium speed diesel or lower speed diesel based on the comments. The smaller automotive diesels are high speed units and relatively new to us on this side of the ocean. New in the sense that most have not been exposed to them.

low speed diesel peak rpm ~1500
medium speed diesel peak rpm ~3300
high speed diesel peak rpm~ 4500-5500

Why the difference? The bearing circumference inside the engine is a main determining factor in max rpm. Bigger bearings/journals equals lower max rpm. Bigger bearings means more torque capability. "Real" is arbitrary and determined by what we know and are used to.

_________________
Providers of wholly developed aftermarket solutions for the KJ CRD.
(248) 977 - 9531

"Real" diesels were built before 1970. You will want one in case of EW.

_________________
No longer a CRD or Jeep owner. Selling everything I have, needs to go as I need the room for a project.