 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Dodge / Dodge Trucks / September 2006Cummins Piston-to-Bore Clearance
Looking for information on the Piston-to-Bore clearance of the 5.9L Cummins. This is information that should be in the shop manual (if I had access to one). Need to know the clearance spec. and if there is more than one piston grade. Thx. If available I'd also like to know the bore and piston diameter tolerances. From my '99 factory service manual... Cylinder Bore Diamater (Max)..........102.116mm (4.0203 in.) Cylinder Bore our of round (Max) .....0.038mm (0.0015 in.) Piston Skirt Diameter .........................101.864-101.896mm (4.0104-4.0117 in.) Sorry, I couldn't find anything on Piston-to-Bore clearance. > Looking for information on the Piston-to-Bore clearance of the 5.9L > Cummins. This is information that should be in the shop manual (if I [quoted text clipped - 3 lines] > If available I'd also like to know the bore and piston diameter > tolerances. > From my '99 factory service manual... > Cylinder Bore Diamater (Max)..........102.116mm (4.0203 in.) > Cylinder Bore our of round (Max) .....0.038mm (0.0015 in.) > > Piston Skirt Diameter .........................101.864-101.896mm > (4.0104-4.0117 in.) Thanks for info ! > From my '99 factory service manual... > Cylinder Bore Diamater (Max)..........102.116mm (4.0203 in.) [quoted text clipped - 4 lines] > > Sorry, I couldn't find anything on Piston-to-Bore clearance. That's because they hid it :) (bore diameter-piston diameter/2=p-to-b clearance) > > From my '99 factory service manual... > > Cylinder Bore Diamater (Max)..........102.116mm (4.0203 in.) [quoted text clipped - 7 lines] > That's because they hid it :) (bore diameter-piston diameter/2=p-to-b > clearance) You could calculate the piston-to-bore clearance if the service manual has the bore size with tolerance (instead of the Max Dia.). Using the numbers above give an answer that I know isn't correct (.252mm max p-to-b). As comparison, the current 6.4L ITEC Powerstroke runs 0.0441-0.0909mm piston-to-bore clearance. > You could calculate the piston-to-bore clearance if the service manual > has the bore size with tolerance (instead of the Max Dia.). Using the > numbers above give an answer that I know isn't correct (.252mm max > p-to-b). You forgot to divide by two. That would then be 0.126mm max clearance. > You forgot to divide by two. That would then be 0.126mm max clearance. Typically, p-to-b clearance is described as the diametric clearance. For clarification, the Powerstroke clearance specs that I mentioned above are the diametric clearance. I thing you are forgetting a few .00 >> > From my '99 factory service manual... >> > Cylinder Bore Diamater (Max)..........102.116mm (4.0203 in.) [quoted text clipped - 12 lines] > numbers above give an answer that I know isn't correct (.252mm max > p-to-b). The nominal bore/stroke dimensions for the 5.9L are 102mm X 120mm (4.01574" X 4.7244"). Subtracting the piston diameter(s) from the nominal bore size gives a piston clearance tolerance of .104mm-.136mm |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.