I would like to back up David on his comments and add the following. One of the most reliable and maintenance free parts of the DeLorean is the engine. Valve problems in the PRV-6 are virtually non-existent. If you are a long time DeLorean owner there is little doubt that at some time you have heard (especially from older Volvo mechanics) that the PRV-6 (B-28F) motor has a bad reputation concerning camshafts. Let me explain. The predecessor to the B-28 was the B27 used in pre 1979 Volvo's. Its main problem was poor head oiling and soft cam shafts - a recipe for disaster. The early B28F's went into production before this problem became obvious. It was not unusual for these engines to chew up the camshafts at low odometer readings. I should know, my 1980 Volvo engine seized at 80k on the clock. Fortunately for the DeLorean the B28F was modified with the inclusion of larger oil passages and harder camshafts and these improvements were included in the DeLorean version of this engine. This new set up made the B28F extremely reliable and maintenance free. I personally don't recommend valves be adjusted prior to 100k miles. There are many "D's" out there with over 200k that have never received a valve adjustment. In closing this is one of those "If It Aint Broke Don't Fix It" scenarios. DMC Joe To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/