Remember the Diesel CJ-5's

[hammersley]

http://www.off-road.com/jeep/tech/engine/perkins192.html



Check out that stroke... ... ... . and Oh The Torque - ansd ONLY 3 Main Bearings!

 

[JasonCzerak]

how can an I4 (inline 4) motor only have 3 bearings?





Maybe 3 in the middle, but what about the ends?

 

[WDixon27]

lotsa old 4 bangers have 3 mains total, didn't flat head ford v8s have 3

how can an I4 (inline 4) motor only have 3 bearings?





Maybe 3 in the middle, but what about the ends?

 

[DKarvwnaris]

how can an I4 (inline 4) motor only have 3 bearings?





Maybe 3 in the middle, but what about the ends?

You may be confusing rod bearings with crank shaft MAIN bearings. There are alot of 4 cylinder blocks that are like this. The torque of the jeep diesels was a little much for its lower end if I remember right though?... My dad's buddy had one back in the day. It was a mechanized mule, rode like one too.



On edit, I remember the end/ thrust bearings being in addition now that I think of it. I used to have a Factory service manual that had references in it to the diesel's. I held on to it for long time in hopes of someday finding a diesel Heep. I gave up and went with the 4bt's and life has been good ever since.

 

[JasonCzerak]

diagram please! I'm still confused but I have an idea tho.

 

[DKarvwnaris]

diagram please! I'm still confused but I have an idea tho.

Diagram?!!! I can barely type to save my life, no way I can help you on that one without help myself. (I passed up computer classes for auto shop and welding, stupidest move I could have made, oh well, should have filled up the 4 studyhall periods with a computer lab my senior year, too good for it at the time I guess).

If someone else on here knows how to link pics from Yahoo photo albums to the thread, I could dig something up and scan it in for you.

Not much to to visualize. If you have had a oil pan off an engine before, you might be able to get this:



This is essentially what it will look like if you can visualize the the "O's" as main rod bearings and the "---"'s as connecting rods and their bearings, The "E" 's will be the end bearings. This would a side profile of the crankshaft view.



E---O---O---O---E

That's about as computer savvy as I get. Hope someone else can help if you still don't get it.

 

[JasonCzerak]

Diagram?!!! I can barely type to save my life, no way I can help you on that one without help myself. (I passed up computer classes for auto shop and welding, stupidest move I could have made, oh well, should have filled up the 4 studyhall periods with a computer lab my senior year, too good for it at the time I guess).

If someone else on here knows how to link pics from Yahoo photo albums to the thread, I could dig something up and scan it in for you.

Not much to to visualize. If you have had a oil pan off an engine before, you might be able to get this:



This is essentially what it will look like if you can visualize the the "O's" as main rod bearings and the "---"'s as connecting rods and their bearings, The "E" 's will be the end bearings. This would a side profile of the crankshaft view.



E---O---O---O---E

That's about as computer savvy as I get. Hope someone else can help if you still don't get it.

nope. not going to help. yes I have had a few motors apart in my life.



do the "E" do anything to support the crank? If they do, then in my book they would be main bearings as well. in my jeep ('93 xj) they are counted as part of the "7" (as also listed in the link orignaly posted)

 

[WDixon27]

-----------------

M R R M R R M

-----------------

main, rod, rod, main, rod, rod, main. now if this confuses you don't even try to figure out a radial or rotary motor

 

[DKarvwnaris]

-----------------

M R R M R R M

-----------------

main, rod, rod, main, rod, rod, main. now if this confuses you don't even try to figure out a radial or rotary motor

Don't know how I messed it up, but you have it correct. I think I only made it worse.

Please don't bring the Radial into this thread, I can't handle another brain ache tonight.

Rotary's are a career in themselves. If you want to have fun with a new shop helper, hand them a timing light and point to a RX-7, say nothing else and watch them from afar, very entertaining to see them try to figure it out. I enjoyed working on them, high revver's, and fun to drive.

 

[WDixon27]

Rotary's are a career in themselves. If you want to have fun with a new shop helper, hand them a timing light and point to a RX-7, say nothing else and watch them from afar, very entertaining to see them try to figure it out. I enjoyed working on them, high revver's, and fun to drive.

i always timed my 83 rx7 by ear, the most fun you can have with 100 hp

 

[WDixon27]

Please don't bring the Radial into this thread, I can't handle another brain ache tonight.

heres a simple single row

http://travel.howstuffworks.com/radial-engine2.htm

 

[TKingsbury]

I know a guy who has a 64 CJ5 with the diesel. It is super clean, his dad bought it new. Cool Jeep, if he'd sell it, I'd buy it.

Travis. .

 

[DKarvwnaris]

heres a simple single row

http://travel.howstuffworks.com/radial-engine2.htm

That's cheating, you brought an animated diagram into the explanation

I wasn't about to try to demonstrate it with characters on the keyboard.

I've seen them in old crop dusters from years back. They were interesting to figure out and watch the owner repair. This was when I was in my early teens so I wasn't cast into the "square peg, round hole" road block my mind works with these days. Funny how the older I get, the less I can grasp on new thinking, must be the lack of family outbreeding I guess.