Question about protrusion - Competition Diesel.Com

tractorguyacb · 04-07-2011, 09:09 AM

my truck.. 2000 24valve with mach 1.6 injectors. Pulled the head off a few weekends ago and just getting around to doing a few checks, i saw in quikserv that the injector protrusion spec is .150 to .171. with the machs i have .132 is that right? also i would like to put new washers on the injectors but the new ones i have from cummins are .063 where the f1 ones are around .054 any suggestions on what i should do? Also, one of the reasons why i ask this is that you can see a faint star pattern on the face of the piston, not in the bowl. Is that normal to see that?

Thanks,
Harold

*Soup Nazi* · 04-18-2011, 01:27 PM

The .060-.065 washers from Cummins are fine. The nozzle style is different so it has a short protrusion. That is normal.

Yes, you will see a pattern on the outdside edge of the piston. Thats true with stock injectors as well.

tractorguyacb · 04-19-2011, 09:17 AM

Thank you don!!

04-07-2011, 09:09 AM	#1
tractorguyacb Name: tractorguyacb Title: Local Diesel Nerd Status: Not Here Join Date: Aug 2008 Member`s Gallery Posts: 180	Question about protrusion my truck.. 2000 24valve with mach 1.6 injectors. Pulled the head off a few weekends ago and just getting around to doing a few checks, i saw in quikserv that the injector protrusion spec is .150 to .171. with the machs i have .132 is that right? also i would like to put new washers on the injectors but the new ones i have from cummins are .063 where the f1 ones are around .054 any suggestions on what i should do? Also, one of the reasons why i ask this is that you can see a faint star pattern on the face of the piston, not in the bowl. Is that normal to see that? Thanks, Harold __________________ Harold 2000 2500, Quad Cab Short Box, 4x4, mach 1.6's, adrenaline, Suncoast converter...Purple Trans 1998 1500, Club Cab Short Box, 4x4 4bt nv4500/np241dld, in progress (barely)

04-19-2011, 09:17 AM	#3
tractorguyacb Name: tractorguyacb Title: Local Diesel Nerd Status: Not Here Join Date: Aug 2008 Member`s Gallery Posts: 180	Thank you don!! __________________ Harold 2000 2500, Quad Cab Short Box, 4x4, mach 1.6's, adrenaline, Suncoast converter...Purple Trans 1998 1500, Club Cab Short Box, 4x4 4bt nv4500/np241dld, in progress (barely)

04-18-2011, 01:27 PM	#2
Soup Nazi Name: Soup Nazi Title: The artist formerly known as Don M Status: Not Here Join Date: Sep 2006 Member`s Gallery Posts: 1,197	The .060-.065 washers from Cummins are fine. The nozzle style is different so it has a short protrusion. That is normal. Yes, you will see a pattern on the outdside edge of the piston. Thats true with stock injectors as well.