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Old 07-28-08, 06:21 PM   #1
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Question Propane injection good idea or bad idea ?.

I found a website saying after fitting this you loose compression in your diesel engine, doesn't save you money and streches the limits of the engine to a point of getting damaged.Also said when the propane is injected the first time the revs rise around 300rpm and at that moment the compression drops.Others say they get improved fuel economy because the engine uses less diesel so go longer distances, a more reliable less noisy engine, improved torque and increased torque.Somebody is saying how bad this is and the other is saying the opposite, so don't which way to go about this.Any of you guys used this yet ? and has it given you trouble so far ?.

Nathan.
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Old 07-28-08, 06:25 PM   #2
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IMO ,anytime you raise the output of an engine ,you lose out on the long term life of the engine.
If its used sparingly the effects would be minimal,but many shops are selling kits where the propane is added to the engine all the time.


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Old 07-28-08, 09:08 PM   #3
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Dougal?? Wayne?? Where are you....?


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Old 07-28-08, 10:56 PM   #4
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I don't know the specifics of how propane injection works, but it was fitted to a Diesel-Electric locomotive in NSW a couple of years ago....Actually a quick search reveals it's in use now...I can't say what effects it is having on the longevity of these loco engines, but from all reports the trials have been a success...

A quote from another forum..

Quote:
...it might seem contradictory to inject more fuel to clean up the exhaust, but it comes down to the chemistry of the burn. The LPG is below the level required for self ignition, so it relies on the diesel igniting to burn itself. It then propagates better burning of the diesel that's left in the exhaust. I've heard of engines in Landcruisers going from 75-80% combustion up to 90-95% with a computer injection system fitted.
Not much of a help I know, but maybe a little more fuel for thought...Pardon the pun.


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Old 07-28-08, 11:29 PM   #5
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Ohh yeah baby... here we go again!


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Old 07-29-08, 02:15 AM   #6
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Dougal?? Wayne?? Where are you....?
You really want us both to chime in?


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Old 07-29-08, 04:52 AM   #7
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You guys don't need to join in again i found that argument in the search thingy guys.You are welcome to explain to me though.
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Old 07-29-08, 01:33 PM   #8
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You really want us both to chime in?
What- do you think I'm just here for the chicks and beer?


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Old 07-29-08, 02:10 PM   #9
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Ofcourse you are Mac and the cruisers too.
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Old 07-29-08, 02:17 PM   #10
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I am a limey ( don't hate me because i am one of them ) and i want to come over there and drink American beer and meet and greet the American woman.
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Old 07-29-08, 04:35 PM   #11
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Even much more power that you get from a engine .. it wears a little more .. Actually I not take the comp measurements of my engine, but I'm 100% positive that it have less comp since I install my turbo in my 2H ..

I good friend here ( and also Mud member ) run a Propane kit in his 105 1HD-T ( swaped engine ) Cruiser ..


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Old 07-29-08, 06:11 PM   #12
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do a search, well discussed over the last year...
my opinion, if used in moderation it is great for power increase... abuse it and kiss your engine good-bye...


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Old 07-29-08, 07:18 PM   #13
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BAsically the conclusion from the thread I started a month ago

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Originally Posted by crushers View Post
do a search, well discussed over the last year...
my opinion, if used in moderation it is great for power increase... abuse it and kiss your engine good-bye...
As with all things, moderation is the key.

Too many people swear by Propane to discount it, and too many people blow engines to totally disregard problems of improper use.

I have decided to go turbo and water injection, but Crushers seems to have good success with his kits.

My decision to go turbo is more based on local building laws forbidding the storage or use of Propane within indoor parking facilities. I actually was interested in propane, but cest la vie.

Best,

T


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