|
|
#51
|
|||
|
|||
I am 99% sure I know what was wrong, but as soon as I open my big mouth . . . I'll probably jinx the motor. Basically I believe that it wasn't getting enough fuel at high rpm.
The hose from the merc male plug to the fuel pump is 1/4" ID and it was kinked a bit by a tie wrap. I put that tie wrap on to keep the hose away from the linkage (when it was near full advance). Anyways . . . to make a long story short . . . I had MJ working the throttle while I was watching the linkage near the hose. 1 out of every 5 times the throttle was advanced to near WOT the linkage bumped the hose and kinked it (cutting off the fuel). I rerouted the fuel lines and fittings to the carbs with a old school three way fuel pump nipple. I pulled apart the fuel pump just to look for any shaving on the filter screen and replaced one of the check valves that wasn't very snappy. The motor seems to have like the changes, so I'm happy that MJ's happy and the boat is running well. I'm pretty sure that's this will one of the final chapters in the MJ motor fiasco series. Well change the poppet valve and rebuild the carbs in the spring . . . just to be safe :) 
|
|
#52
11-12-2008, 08:32 PM
|
|||
|
|||
|
Glad the Merc ran good for you MJ.
33 knots....thats like 38 mph, not too shabby!
__________________
*************************************** Stay Safe!  Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
|
|
#53
11-12-2008, 10:50 PM
|
|||
|
|||
|
MJ - I plugged the numbers into the prop calc and your right on the money 5600 - 5800 rpms to get that speed with 2:1 ratio, 15p prop and 12 -15% slip. All you need now is a good tach or an adjustment on that one.
|
|
#55
11-12-2008, 11:44 PM
|
||||
|
||||
|
Quote:
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
|
|
#56
11-13-2008, 12:00 AM
|
|||
|
|||
|
yeah - I put the 2:1 on that motor (from a 1991 2.0L 150) so MJ's sea tub could get on a plain better.
|
|
#57
11-13-2008, 12:12 AM
|
||||
|
||||
|
Quote:
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
|
|
#58
11-13-2008, 08:23 AM
|
|||
|
|||
|
Dang, you cant beat a CUSTOM made Merc that comes with its own mechanic.
__________________
*************************************** Stay Safe! Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
|
|
#60
11-13-2008, 10:39 AM
|
||||
|
||||
|
Quote:
Sounds like a lifetime policy to me.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
|
 |
|
|
Linear Mode
