Changed plugs today, found something odd...
02-01-2013, 06:34 PM
#57
Surf Hard, Drive Hard
Join Date: Feb 2007
Location: Indialantic, Florida
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^....okay, I believe it was all that other stuff you have been running through there......didn't you also seafoam or something like two or three times in a short period of time on that set of plugs, or am I remembering something else????
06-17-2013, 01:09 PM
#62
Soak them in seafoam overnight and scrub them with the toothbrush.
I managed to get all the gunk off mine with 15k miles on them.
Though I had to buy a new trailing as part of the ceramic coating had broken off in the engine at some point.
I managed to get all the gunk off mine with 15k miles on them.
Though I had to buy a new trailing as part of the ceramic coating had broken off in the engine at some point.
07-12-2013, 04:36 PM
#63
Update;
Okay, so I "think" I found the problem.
I pulled the new plugs with about 900 miles on them. They are already showing excessive oil build-up. Now these new plugs never saw a drop of premix. So I know it's not the saber pro messing them up.
Today, stuck in gridlock, I was looking at the live data feed from the Cobb....
Idling @875rpm the mop stepper motor is at 15. Which is really high. So I started looking at other stuff. Turns out my low compression motor is sitting at 50% load when idling (no load).
Pic 1, Stock MOP Map.
Look at rpm range 720-3000. What happens at 50% load? It goes from step 6 to 19 @50% load. For some strange reason its actually higher in the 720-1000 (19) than 1500-2000 (16).
So when you adjust the map (I think multiplied by +1.45) You move all the values up and adjust any setting higher than 60, back to 60.
Pic 2, This is the map I used for about 15k miles. One set of plugs lasted 20k (about 10k on stock map) 2nd set didn't even make it 5k. 3rd set is already showing signs of the same faith.
Pic 3, Is the map I just installed into the car. Hopefully, this will solve the issue with fouling the plugs.
Some good news, I got that ultrasonic cleaner from harbor freight. Seems to work, still want to try different chemicals to clean them with.
-Shawn
I pulled the new plugs with about 900 miles on them. They are already showing excessive oil build-up. Now these new plugs never saw a drop of premix. So I know it's not the saber pro messing them up.
Today, stuck in gridlock, I was looking at the live data feed from the Cobb....
Idling @875rpm the mop stepper motor is at 15. Which is really high. So I started looking at other stuff. Turns out my low compression motor is sitting at 50% load when idling (no load).
Pic 1, Stock MOP Map.
Look at rpm range 720-3000. What happens at 50% load? It goes from step 6 to 19 @50% load. For some strange reason its actually higher in the 720-1000 (19) than 1500-2000 (16).
So when you adjust the map (I think multiplied by +1.45) You move all the values up and adjust any setting higher than 60, back to 60.
Pic 2, This is the map I used for about 15k miles. One set of plugs lasted 20k (about 10k on stock map) 2nd set didn't even make it 5k. 3rd set is already showing signs of the same faith.
Pic 3, Is the map I just installed into the car. Hopefully, this will solve the issue with fouling the plugs.
Some good news, I got that ultrasonic cleaner from harbor freight. Seems to work, still want to try different chemicals to clean them with.
-Shawn
07-12-2013, 06:23 PM
#65
Okay, so that's not the number, 1.45 is the number they were arguing about for dwell times. 
Seems it is a 33% increase I used. But still, first set of plugs had 10k on them when I upped the mop and lasted another 10k miles.
What else could it be causing the high load at idle? When I cruise in 4th gear @40mph engine load is around 40-42%, A/C on.
Seems it is a 33% increase I used. But still, first set of plugs had 10k on them when I upped the mop and lasted another 10k miles.
What else could it be causing the high load at idle? When I cruise in 4th gear @40mph engine load is around 40-42%, A/C on.
Last edited by 1.3_LittersOfFurry; 07-12-2013 at 06:25 PM.
07-13-2013, 05:39 AM
#67
Registered
Condition of spark plugs with "heavy" premixing.
My Dutch 231 hp 6 speed Rex has run 35.500 km's now on standard 95 RON gasoline.
My OMP 4 stroke oil consumption was increased by 65%, due to adaption of a 2 mm inner bore restrictor in the vacuumtube of the OMP. The standard 4 stroke oil consumption of 1.0 litre per 4.000 km's was raised to 1,65 litres per 4.000 km's (moderate driving style; 3/4/5k rpm, hardly no redlining). The socalled "Woorrmser-adapter" (1,5 to 3,0 mm inner bore restrictor; 2 mm most adapted) is frequently used by German Rexowners to increase the OMP output in a simple way, generally reporting the same increase in oil consumption as previously stated.
My average fuelconsumption is 11,5 litre per 100 km / 8,7 km's per litre (20,6 mls per gallon)
The 4 stroke oil consumption related to the gasoline consumption is 3,6 ml per 1.000 ml gasoline (1:277)
I aditionally started premix at 8.000 km's with a Jaso FC-FD synth. 2 stroke oil at a rate of 6,4 ml per 1.000 ml gasoline. (1:156)
The total (4 plus 2 stroke) oil consumption is 10 ml per 1.000 ml gasoline (1:100).
The condition of the spark plugs after 27.500 km's with the upper oil consumption is excellent, as per attached picture.......(NGK RE9B-T / RE8C-L, left / right)............
My Dutch 231 hp 6 speed Rex has run 35.500 km's now on standard 95 RON gasoline.
My OMP 4 stroke oil consumption was increased by 65%, due to adaption of a 2 mm inner bore restrictor in the vacuumtube of the OMP. The standard 4 stroke oil consumption of 1.0 litre per 4.000 km's was raised to 1,65 litres per 4.000 km's (moderate driving style; 3/4/5k rpm, hardly no redlining). The socalled "Woorrmser-adapter" (1,5 to 3,0 mm inner bore restrictor; 2 mm most adapted) is frequently used by German Rexowners to increase the OMP output in a simple way, generally reporting the same increase in oil consumption as previously stated.
My average fuelconsumption is 11,5 litre per 100 km / 8,7 km's per litre (20,6 mls per gallon)
The 4 stroke oil consumption related to the gasoline consumption is 3,6 ml per 1.000 ml gasoline (1:277)
I aditionally started premix at 8.000 km's with a Jaso FC-FD synth. 2 stroke oil at a rate of 6,4 ml per 1.000 ml gasoline. (1:156)
The total (4 plus 2 stroke) oil consumption is 10 ml per 1.000 ml gasoline (1:100).
The condition of the spark plugs after 27.500 km's with the upper oil consumption is excellent, as per attached picture.......(NGK RE9B-T / RE8C-L, left / right)............
Last edited by Rudolph; 07-13-2013 at 07:04 AM.
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