Forum Discussion
ricatic
Mar 02, 2012Explorer
rick83864 wrote:NewsW wrote:milsuperdoc wrote:
Does anyone know if there's any other studies or attempts to replicate or discredit the Spicer report since it was done?
Yup.
The test done has no relevance to operating conditions of 2,000 bar and 150C normally experienced in a Diesel fuel pump circa Bosch CP 4.2
Same reservations noted in ASTM D975
And other studies I posted.
Sorry I don't have the time to read ALL your posts or links ( opps you don't link :B) but you will certainly agree the higher pressure pumps as in the CP4.2 will have a higher scar :E with greater pressure. (think of sandblasting) The CP3 used in pre 2011 GM's and all the Ram Cummins since 2004 IIRC didn't have to many issues.
Just to top it off, I wonder who at the refinery actually adds the lube after it flows into a tanker? I'm thinking of a pimpled face kid texting at the same time :E
Just before being sent to the penalty box on another site, I wrote about the 1600 BAR systems used prior to the CP4.x series. Another member there, since given a match penalty, and I had a discussion about his 2012 VW Passat. He is a well known VW diesel guy with loads of experience with the CP4.x series pumps. His new 2102 VW has a CP4.1 series HPFP. The pump has been derated from the 2000BAR rating previously used in the VW and still being used in the Ford and GM trucks to 1600 BAR. The piezo injectors were also replaced with older but more reliable injectors suited for 1600BAR operation.
It appears that VW has decided that the repairs on the 2000BAR system were becoming too expensive. They fought this fight for 4 years before they conceded defeat. Is there a message in there for Ford and GM? I think so...but Ford will not listen and history will repeat itself...
I am still waiting to see if Dodge adds DEF injection to their HD pickup's. A two tone black/beige dually Longhorn will look good in my driveway...I sat in one at a local outdoors show...nice truck...
Regards
About Around The Campfire
44 PostsLatest Activity: Mar 27, 2026