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Unread 11-02-2011, 06:45 AM   #91
cummins5552
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Have you had it on a dyno?

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Unread 11-02-2011, 08:24 AM   #92
youngjeeper11
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Not yet, it is really on the back burner right now. I love your cummins TJ, you did a great job with it.

No reason to put it on the dyno as the 4bt is stock, what have you done to your 4bt to get more power? Right now I am only planning on a fuel pin, injectors and a bigger turbo
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

Ask me about my 4BT Cummins Motor Mounts!!
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Unread 11-02-2011, 07:40 PM   #93
cummins5552
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Thanks ,I've not done a whole lot other than a pin,gov spring, mild injectors ,hx35 and turn up the pump. I really want a p-pump for mine, but they are hard to find. What kind of mpg are you getting?
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Unread 11-03-2011, 08:25 AM   #94
youngjeeper11
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That is probably all I will do, I want to keep mine fairly reliable, but I want to roll some coal! I am still researching what I want to do. What did yours dyno at again?

I am getting about 20-22 mpg, I hope that improves a lot when I re-gear because it screams going down the highway.

A p-pump would be awesome, its almost easier to find another 4bt w a p-pump all together haha
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

Ask me about my 4BT Cummins Motor Mounts!!
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Unread 11-03-2011, 09:26 AM   #95
Dre40
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Have a question. would you be willing to share your Solid works Drawing for motor mounts with me?
thanks
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Unread 11-03-2011, 11:57 AM   #96
Dre40
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that's cool no problem anything will help. I have solid works here at work that i use. I have a laser machine here at work that i can have parts cut on the side..
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Unread 11-04-2011, 11:24 AM   #97
Spuznick242
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Wow. I have some serious parts and fab connections but not a lazer cutter. Hahaha. I have access to a CNC machine but I much rather buy a set instead of fabing them for $175.

What are you geared to and what are you going to gear to? I'm thinking of going with 3.07 gearing, maybe 3.73 depending.
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DD- 1995 YJ 2.5L, Cat delete, 19lb injectors, 30/9.5r15
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Unread 11-04-2011, 12:20 PM   #98
youngjeeper11
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I am not sure what gears I have actually, never cared to check, probably 4.10 since it does like 2600ish rpm at 65-68 mph in overdrive....

I am going to 3.07 for sure, it feels like I am driving in 4lo all the time, I cant even acellerate fast because I have to shift every second, it just hits the governor right away, like listen to a big rig pull out from a stop, he hits 4th gear at like 20 mph, thats how it feels driving my jeep haha
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

Ask me about my 4BT Cummins Motor Mounts!!
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Unread 11-04-2011, 12:23 PM   #99
Dre40
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well right now its in pieces lol the axles I have are D44 front and 12bolt rear out of a 79 Blazer and they have 3:73 in them with an auburn locker. I have an SM-465 trans with a 208 tranfercase. I picked up my engine last night. I got it from work they where scraping it, its an 05 4.5 Cummins brand new never installed. now I need to find a flywheel and bell housing for it.
img_2370.jpg  
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Unread 11-07-2011, 10:40 AM   #100
Spuznick242
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If your jeep origninally came with a 2.5L then you have 4.10 axles. Mine has 4.10s and the project jeep I'm hoping to finally make it to pick it up is regeared to 4.10s but I'm thinking 3.07s now because of the tire sizes and running 33s at least. But I know the feeling of shifting nonstop, they've got 17 speed transmissions and we've only got 5 but I would start out in second or maybe even third untill the regear, it'll put more strain on the clutch if any but it'll save the rest of the trans from having nonstop shifting.

But that's a great looking engine to start off with. They were scrapping it but it was never installed? o.O But what did you pay for it?
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Unread 11-07-2011, 11:19 AM   #101
Dre40
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I payed $0 for it. they just wanted it off the property. they where going to give it to a scraper for pennies on the dollar but I asked and my boss said get it out of here.... I got work to do but will be an interesting project.
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Unread 11-07-2011, 11:40 AM   #102
Spuznick242
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What a steal! Haha. I would love to find any diesel that cheap, not to mention a cummins.
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DD- 1995 YJ 2.5L, Cat delete, 19lb injectors, 30/9.5r15
Trail Rig- 1994 YJ 4.0L, Rubicon Express 4.5inch lift, 1inch body, D30 Aussie, 33/12.5/r15 Cooper Mud Terrains, front bumper, rocker guards
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Unread 11-08-2011, 02:03 PM   #103
Dre40
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Yes I have some work ahead of me but it should be fun. Hay what did you do for an RPM gauge? how did you hook that up? or you didn't. Because these are mechanical engines.
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Unread 11-08-2011, 02:16 PM   #104
youngjeeper11
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I have not looked into it much yet, a lot of people have done some custom fab with hall sensors and such, but I really want to look into how its done on old dodge ram 6bts, might work on a 4bt at well...
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

Ask me about my 4BT Cummins Motor Mounts!!
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Unread 11-08-2011, 02:27 PM   #105
Dre40
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there's a few different ways. one way is to get the reading of the alternator but that take electronics. and there's another way with using a MAG pickup reading the flywheel
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