piston compatability ?

[2broke2smoke]

bought a set of pistons/connecting rods on ebay ...





86$



they are out a '99 ...



can i keep them for back ups for my '01



what about so vs ho ?



or do i just save them to tease my chevy and ford buddies

 

[Mundgyver]

There is what is called a Grading process for pistions on these trucks. I have an H. O. and I know that pistions from a non H. O. will not work in my truck without doing other things. Has something to do with the clearance between the piston top and the head. I know that you cannot mix grades either. I think this how Cummins can build a basic engine that can then be used in a Marine application or Industrial or Transportation and even though the engines look the same, they are very different when it come to hp and tq outputs.



I don't have enough knowledge to inform you better, but there are those that do that should chime in here.



I would be very carefull and make sure you have all your research done before you install them.

 

[2broke2smoke]

thanks ...



they are out of a '99 dodge if that matters

 

[jwilliams3]

You got a good deal on the piston and rod setup!!

 

[RCenters]

i got a set of pistons /rods too off ebay 98. 5 , i was looking at them today and comparing them to a 01 engine i have and noticed that the dish is deeper in the 98. 5 , i dunno if the 01 is a HO i just bought it to replace the one i melted in mine ,,butt i'll look at mine tomorrow and compare . I know one thing these engine are tough my original engine had 247,000 miles on it and melted the pistons ,and with a mild hone job to c if the walls cleaned up i mesured ring gap and it was 17 ,factory minn is 16

 

[Diesel Freak]

Best bet is to compare CPLs between the engines.

 

[RCenters]

i checked the 98. 5 to my pistons in my NON HO 01 and theres a slight difference in the bowl the 98. 5 is slighty deeper , really need to CC the bowls to b sure



anyways im putting these in my 01

 

[jwilliams3]

The CPL will only tell you that the pistons are different part numbers.

The HO had different pistons making a higher compression ratio.

Lowering the compression wont hurt anything.

 

[crawler]

The answer is YES they will work in your motor.



Later,

Wes