User Tag List
Thanks: 0
Likes: 0
Results 1 to 1 of 1
Thread: merc 280 mystery
-
06-03-2020, 07:13 PM #1New Member
- Join Date
- Nov 2008
- Location
- west coast
- Posts
- 1
- Thanks (Given)
- 0
- Thanks (Received)
- 0
- Likes (Given)
- 0
- Likes (Received)
- 0
- Mentioned
- 0 Post(s)
- Tagged
- 0 Thread(s)
merc 280 mystery
Hey everyone.......i have been building merc 260 center horns many years....have a stuska test cell dyno that all of them run on for my customers and all has been well.....i am on the west coast and don't see hardly any 280's as a rule. I have one on the dyno now for 3 weeks and this thing just won't make power. Has compression, spark, fuel pressure......will wind up to 7700 and only make 100 hp.....have checked dyno multiple times and run other engines in between.....the dyno hp and torque cross at 5250.....checked the brake calibration.....MY son call this engine the unicorn.....it really exist but won't make power......i hook it up to DDT and richen it up.... only thing i cant see is the advance on the dyno at cranking with timing light ,while throttle being advanced..,WTF
Driving me nuts
JP
Similar Threads
-
Mystery Inline Merc
By largecar91 in forum Technical DiscussionReplies: 9Last Post: 01-17-2006, 09:14 PM -
mystery Merc
By ggarland in forum Outboard and Racing HistoryReplies: 4Last Post: 04-05-2003, 03:09 PM -
Mystery Merc Please Help Id???
By B.Mac in forum General Boating DiscussionReplies: 1Last Post: 03-31-2003, 03:37 PM -
Mystery Merc Please Help Id??
By B.Mac in forum Technical DiscussionReplies: 0Last Post: 03-29-2003, 06:11 PM -
merc 2.0 175 hp overheat mystery
By checkmate28 in forum Technical DiscussionReplies: 19Last Post: 07-29-2002, 09:29 AM