From:	Jeff Clark
Sent:	Wednesday, June 29, 2005 1:10 PM
To:	'Fetterman, Pat'; Bill Buscher (E-mail); Bill Larch (E-mail); Campbell, Bob; Cathy Devlin; charlie.passut@aftonchemical.com; Dan Pridemore; Dick Patrick (E-mail); greg.shank@volvo.com; James Gutzwiller; James Matasic (E-mail); Jim McGeehan; Jim Moritz (E-mail); Jim Rutherford; Jim Wells (E-mail); Joe Franklin; John Heagelin; Keith Selby; kenneth.goshorn@volvo.com; Mark Cooper; Matt Urbanak (E-mail); Michael Minotti; Mike Zaiontz (E-mail); Norbert Nann (E-mail); Riccardo Conti; Ron Buck; Scott Harold; Scott Richards (E-mail); Stacy Bond; Steve Kennedy; Tom Franklin; Warren Totten (E-mail); Wim Van Dam
Subject:	Mack SP Minutes of June 29 2005 Teleconference

Attendance - Scott Richards, Jim Moritz, John Haegelin, Jim Matasic, Jess Hamilton, Bob Campbell, Riccardo Conti, Wim van Dam, Jim Rutherford, Ken Goshorn, Jeff Clark, Greg Shank, Pat Fetterman

T-11 Reference Data - the data on the test with T-12 rings so far is mixed (6.63, 6.30, 5.82). There was some discussion on the various tests about exhaust temps and perhaps changes in egr rates and CO2 levels. No good reason was found to doubt the validity of these tests. Discussion moved to whether a correction factor should be implemented or whether the T-11 rings should be kept and build techniques (reaming of guides, etc) be examined more closely. Wim asked the group which direction they wanted to go. A discussion of reaming techniques took place. It became obvious that lab practices varied a great deal and there is a need to standardize. Desired final clearances need to be settled as well. Wim van Dam attempted to sum up a general consensus on a path forward. Greg indicated that we need to standardize the details of the head build. He also stated that more data would be needed before a CF could be used with the T-12 rings, should we choose to go that way. Jim Matasic and Scott Richards stated that any standard procedure should be propagated to the other Mack tests. Much more discussion occurred. Wim re-iterated his call for the group to decide which path to follow. Wim suggested that Bob and Jim Moritz develop and distribute a reaming procedure. He also suggested that PE run two tests, one on each set of rings with the new reaming procedure and Afton run with new reaming procedure and T-11 rings. Jim Moritz suggested that the decision on which rings Bob runs (and his Jim's second run as well) be delayed until he has run his first on T-12 rings. We'll have a call to evaluate these things stepwise as they occur. It was noted that any potential CF analysis needs to be done for mrv as well as soot.

T-11 Correlation - Jim Rutherford's presentation is attached. Jim found no correlation between soot and oc. He did find a correlation between mrv and oc.

Regards,

Jeff Clark
Staff Engineer
ASTM Test Monitoring Center
6555 Penn Avenue
Pittsburgh, PA 15206
412-365-1032
412-848-8843 (cell)
jac@astmtmc.cmu.edu