If you are going to go through all that trouble, why not just put a whole 4BT under the hood?
Yes, you might have to cut a hole in the hood to make room for those tall valve covers but I think
it would be a waaay cool mod.
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| so, I was thinking the other day..... http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=72861 |
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| Author: | LMWatBullRun [ Fri Dec 14, 2012 6:51 pm ] |
| Post subject: | so, I was thinking the other day..... |
and I was wondering whether it would be possible to find a mechanical injector that would fit in the CRD head. It looks as though a Cummins 3.9 L mechanical injection pump from a 4bt would fit in the place of the high pressure pump, but those injectors are loooong suckers. Any ideas, anybody? |
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| Author: | PermanentGrin [ Thu Jan 24, 2013 11:08 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
LMWatBullRun wrote: and I was wondering whether it would be possible to find a mechanical injector that would fit in the CRD head. It looks as though a Cummins 3.9 L mechanical injection pump from a 4bt would fit in the place of the high pressure pump, but those injectors are loooong suckers. Any ideas, anybody? Boy, it's quiet in here. I was thinking the same thing. Would solve my problem, but what about the transmission control on an auto. If I could acquire a manual to fit that worked with the 4wd, it would be a BA and trouble-free rig. |
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| Author: | flash7210 [ Fri Jan 25, 2013 9:23 am ] |
| Post subject: | Re: so, I was thinking the other day..... |
If you are going to go through all that trouble, why not just put a whole 4BT under the hood? Yes, you might have to cut a hole in the hood to make room for those tall valve covers but I think it would be a waaay cool mod.
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| Author: | LMWatBullRun [ Fri Jan 25, 2013 12:23 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
flash7210 wrote: If you are going to go through all that trouble, why not just put a whole 4BT under the hood? Yes, you might have to cut a hole in the hood to make room for those tall valve covers but I think it would be a waaay cool mod. 4 reasons: Space, weight and torque. And there are potential legal hassles. there isn't enough room, the 4 bt is a LOT heavier, and it puts out way more torque. As regards a manual transmission, this is doable and I am thinking about doing it. |
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| Author: | bigjl [ Fri Jan 25, 2013 2:21 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
Not sure if they ever did a manual 2.8 for the UK market but the 2.5 was manual only I think. I have certainly never seen an auto 2.5 or a manual 2.8! There were a few petrol manuals, I think with a 2.4 petrol engine, there was one at the Auction where I helped get the '02 2.5 for a friend. A manual box with the extra oomph of the 2.8 would be a nice combination indeed. I would think if you wanted to do an engine conversion you would be better looking towards European or Japanese diesel engines as they tend to be smaller in capacity. A lot of the VM engined Range Rovers were fitted with a 2.8 Isuzu diesel lump I believe, there used to be a kit to do the conversion. What about the 2.0 Diesel engine as fitted to several European bound US built vehicles like the Caliber or PT Cruiser, or the current Jeep Compass? Not sure how viable those are, just throwing out some ideas. |
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| Author: | LMWatBullRun [ Tue Jan 29, 2013 3:26 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
I was also thinking about putting in a 1.9L tdi or a 2.4L D24, but those also have issues. on balance, I think I would be best off putting new injectors in the CRD. |
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| Author: | ChooChooman74 [ Tue Jan 29, 2013 3:59 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
You will have to make your own gears for timing. You would need a 2:1 timing so the pump fires correctly. Sent from my DROID BIONIC using Tapatalk 2 |
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| Author: | naturist [ Wed Jan 30, 2013 10:19 am ] |
| Post subject: | Re: so, I was thinking the other day..... |
Um, there are reasons for the electronic injectors beyond just taking more of your money. I think you are sort of wondering about replacing your circa year 2012 computer with a circa 1950 mechanical adding machine here. It might be doable, with a lot of work, but why on earth would anybody want to do that? What you lose would be enormous, what you gain questionable, and the costs substantial. Sure, nostalgia for "the good old days" is nice and all, but really? |
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| Author: | LMWatBullRun [ Wed Jan 30, 2013 12:29 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
naturist wrote: I think you are sort of wondering about replacing your circa year 2012 computer with a circa 1950 mechanical adding machine here. It might be doable, with a lot of work, but why on earth would anybody want to do that? What you lose would be enormous, what you gain questionable, and the costs substantial. Sure, nostalgia for "the good old days" is nice and all, but really? Nostalgia has nothing whatever to do with it. I am an engineer, not an art critic. The facts are that electronic injectors themselves are between ten and twenty times more expensive than mechanical injectors, while the HP pump and computer add insult to injury. The added complexity of the electronics add cost to both initial outlay and maintenance, and worse, lower system reliability. The added performance is about 20% additional power and torque, most of which I can easily recoup by adding boost. With a manual gearbox and mechanical injection I have no need whatever for any electronic components, a significant advantage for a number of reasons. For example, I would not take the Liberty swimming even with a snorkel as dependent as it is on electronics. Advantage: mechanically injected engine and manual gearbox. I am willing to trade a slight loss of performance for improved serviceability, reduced maintenance costs, and improved reliability. |
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| Author: | LMWatBullRun [ Wed Jan 30, 2013 12:37 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
ChooChooman74 wrote: You will have to make your own gears for timing. You would need a 2:1 timing so the pump fires correctly. Sent from my DROID BIONIC using Tapatalk 2 gears would not be a significant issue. I would probably make one up from plate stock. The belt might be more of an issue, as the tooth count using the same pump center would be different, and I am not sure I could move the pump far enough to compensate. I will have to look at that. It may be that putting in one of my D24T blocks is easier. |
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| Author: | bentstrider83 [ Tue Feb 26, 2013 3:09 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
LMWatBullRun wrote: Advantage: mechanically injected engine and manual gearbox. I am willing to trade a slight loss of performance for improved serviceability, reduced maintenance costs, and improved reliability. Just thought I'd resurrect this thread for the sake of seeing as to whether anyone has actually done this with a 2.8 yet. I'm looking at keeping my machine for awhile and had a manual transmission conversion going through my head as of late. |
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| Author: | CATCRD [ Tue Feb 26, 2013 5:43 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
A lot of us have that recurring dream. So far it's only that... |
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| Author: | LMWatBullRun [ Tue Feb 26, 2013 9:31 pm ] |
| Post subject: | Re: so, I was thinking the other day..... |
Well it won't be soon, but I *AM* looking to do this, and if I do I will publish photos just as I did with the ARP studs, which by the way seem to be working as intended.  The slight coolant loss I was getting has gone; don't know whether it was leaking from the WP or leaking out the HG, but there was no sign of leakage around the WP, and some of the studs took up to a full turn to reach final torque at 130 FP. Given that and the large variation in removal torque on the old head bolts, I strongly suspected a (formerly) warped head. NOW that head is securely clamped to the block, and I seem to be losing no coolant. One less thing to worry about, which is why I am thinking about a manual gearbox. That will be one fewer thing again to worry about. Governments take something simple and complicate it. Engineers take something complicated and make it simple and reliable. Or they should.... 
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