Cummins bore and stroke

[NPloysa]

What is the bore and stroke of the Cummins 5. 9? Can you tell me in inches? Just the cylinder size.



What I am trying to get at, is if the 5. 9 is rounded up to 6 liters, and I were to take 6 1-liter bottles and line them up, it would still equal 6 liters, but would the bore be larger and stroke smaller?



Know what I mean?



Thanks.

 

[Headshot zod]

Some say 359 cid some say 360 cid. If you were to race at Bonneville the conversion factor is.



litres x 61. 026 (cubic inches per litre)



bore x stroke is 4. 02" x 4. 72"

 

[klenger]

I came up with 359. 4473089 cu-in, whcih would be 5. 890068314 Liters.



Dimensionally, it looks more like 6 ea 1/2 height 2 liter pop bottles lined up in a row.

 

[EMD Diesel Power]

Cummins is a 359.



Gassers can have the 360 designation.



Leaves the unique number for us. And I do beleive the gassers are a true 360 mathematically. not sure on that though! :-{}

 

[hammersley]

If I understand your ?????

Liter bottles are pretty small - like 2+ inches I think. So a piston of that size would have to have a very long stroke to get to 359.....

 

[NPloysa]

Liter bottles are pretty small - like 2+ inches I think. So a piston of that size would have to have a very long stroke to get to 359.....

Right, so if I double it, like Klenger said, by using 2 liter bottles cut in half lengthwise, it should be closer.

 

[RonaldLarson]

Hmmmmmmmmmmm

Glass pistons? Another gooder idea from Ford !

Ron

 

[nickleinonen]

Glass pistons? Another gooder idea from Ford !

Ron

toyota did that already... really... there is a toyota diesel training video which has an engine with a glass window in the piston [or the entire piston is glass] they had a high speed camera under the piston and you could watch the combustion process. . pretty neat. i saw it a few times back in 2002 when i was in school...

 

[Marco]

The the displacement of the Cummins is 5888 cc.



Marco

 

[SHobbs]

another question

What exactly is the compression ratio? Yes you can say 15:1 or something along those lines but what is the meaning. Also what kind of temperatures are created from hot air being compressed in order to detonate the fuel?

 

[Vaughn MacKenzie]

Compression ratio is volume in the combustion chamber at BDC compared with volume at TDC. So when you say 17:1 CR there is 17 times less volume in the cylinder at TDC compared to BDC.



Vaughn

 

[DTroy]

The air is compressed to as much as 500 psi and at a compressed temperature of approximately 1000°F. (this is conservative for the TDR nuts )

If you need a formula for compression, it's swept + unswept / unswept.