DirtyComanche Posted August 10, 2006 Share Posted August 10, 2006 I got fed up yesterday. I don't want any of the wiring, vacuum lines, and current fuel system BS that's uder my hood. So, that'd mean we need to do a conversion. I 'think' my conversion would require: (This is for an 89 4.0 Renix engine) Junkyarding: Propane tank Mixer (260-300CFM) Regulator Assorted hoses. Ah, maybe buy them new. Probably should talk to the local impco dealer or something... CJ/YJ intake (carbed intake), or modify the renix one? (Fill various holes) CJ/YJ ignition, being dist, coil and god knows what else Make: Adapter plate for mixer. Tank mounts, line mounts, etc. No big deal. I have no idea what will happen when you remove the computer with the renix. I'll probably have no headlights or gauges and etc, but that's something to deal with as it happens! Basically, if in doubt, cut it out! Link to comment Share on other sites More sharing options...
Hot Rod Jeep Posted August 11, 2006 Share Posted August 11, 2006 I know I had a totally different set up (87 throttle bodied 2.5) but I gutted all the wiring I didn't need and all my lights, wipers, etc. still work. Just my $.02 cents. 8) Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 11, 2006 Author Share Posted August 11, 2006 Currently I'm actually more worried about the ignition than anything. I don't know other vehicles well enough... The whole concept of being able to adjust the timing it foreign! Link to comment Share on other sites More sharing options...
87manche Posted August 11, 2006 Share Posted August 11, 2006 I know that people have run the Renix system with propane. So you don't have to go carb. I don't know much more than that. Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 11, 2006 Author Share Posted August 11, 2006 Run the renix system as in...? I mean, I can keep the manifold, and fill a few holes. And I'm NOT talking dual fuel. Link to comment Share on other sites More sharing options...
pingpong Posted August 11, 2006 Share Posted August 11, 2006 OK I am going to tell you what lil I know. Propane is a good power source when the motor that is running it is built to run on it. By that I am meaning the cam shaft and compression are right for the fuel of choice. Propane offers very few advantages over FI, unless of course you don't have it. As for the wiring... Just go buy an aftermrket wiring kit. They have them just about everywhere. Painless is by far the best known one, but also the priciest. I bought one for a CJ project I had from a vendor on ebay, and it was the same exact thing as a painless kit, but made for a YOta I think. It had all the lights, and starting circuits, plus the alt. Pretty basic after I got to looking at it. I think this is the site JToutfitters.com Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 12, 2006 Author Share Posted August 12, 2006 OPropane is a good power source when the motor that is running it is built to run on it. By that I am meaning the cam shaft and compression are right for the fuel of choice. Propane offers very few advantages over FI, unless of course you don't have it. Well, at 107 octane it's not exactly like you should be running a 8:1 CR. However, I know enough dual fuel sluts that I'm not bothered by it... I think I'll try it, and if it doesn't work really well I could either shave the head, or just swear at it a bit and consider a new drivetran. The cam isn't a huge deal. Propane cams have slightly longer exhaust durations; but it's not actually for power. They like to let the exhaust valves seat 'softer'. And as far as the advantages/disadvantages, well, I don't really care. Life's too boring if you never try stupid ideas. I'll probably look around for a complete harness... Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 12, 2006 Author Share Posted August 12, 2006 The other dilema is that the harmonic balancer has no timing marks on it... I can find 0* (TDC) without it... But, I mean that by ripping the head off. Hmm. Link to comment Share on other sites More sharing options...
JOMJ87 Posted August 12, 2006 Share Posted August 12, 2006 Ok what I have learned in the past couple of Hours with this is your timing would be off since the propane want have the same flash point, you would have cooling isues since gas is also used to cool off cylinder walls, It would be cheaper than buying gas especially since gas is forever rising!!!!!! Just a little info but i say go for it ;) since it can save you LOADS of money :cheers: but make sure you document and let us know how it goes cause i am now considering it since you can prob fix all the issues you would have and the money issues are a tremendous advantage i really don't care if it gives me more power. :brows: Cole Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 12, 2006 Author Share Posted August 12, 2006 Yes, the timing needs adjusting, a couple degrees advance, IIRC. But, I still gotta figure out how! Cooling issues are not issues. The engine will actually run colder on the propane. The ONLY thing that worries me about propane is it's next to impossible to start below -40. -45 and you're pretty much dead in the water. Oh, and for the number of miles I put on this thing, I'll have to keep it for about 40 years before the conversion pays for itself... Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 12, 2006 Author Share Posted August 12, 2006 Thought about my timing issue... Aren't YJ's serpentine belt? Wouldn't their harmonic balancer have timing marks? Hmm... Wonder if it would fit? Link to comment Share on other sites More sharing options...
4play Posted August 12, 2006 Share Posted August 12, 2006 It would be cheaper than buying gas especially since gas is forever rising!!!!!! Just a little info but i say go for it ;) since it can save you LOADS of money "Propane does not increase your gas mileage. The rule of thumb is that a gallon of propane is equal to 9/10ths of a gallon of gas. " quoted from http://www.gotpropane.com/p1.html. These people are selling full conversion kits. I would have thought it would have been much cheaper too. Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 12, 2006 Author Share Posted August 12, 2006 Ah, but, it only costs me 60 cents a liter, with 87 octane sitting a $1.29/L... Link to comment Share on other sites More sharing options...
Oizarod115 Posted August 12, 2006 Share Posted August 12, 2006 you have to worry about your heep not starting because of NEGATIVE FOURTYFIVE DEGREE WEATHER.... HOLYBLEEPIN BLEEP! id be frozen into my bed!@ (i don't think i could deal with -0 more than once a year haha) Link to comment Share on other sites More sharing options...
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