The MOTO-DUDE DOMAIN
1985 Madura 1200 - Repair and restoration log
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Around 1990, I had been bikeless for 5 years. The urge to ride hit me and I bought a used 1985 Madura 1200. This thing was awesome in every way (though style is subjective). The V-4 engine was magnificent, best motor ever. Eventually, I sold the bike. But after 20 years, I found another one in great condition. |
Nov 18, 2011 -- Hot mamma.
Checking the temp gauge. It seems like it loves to flirt with
the red zone a lot. The bike runs with the gauge about 2/5ths but a stop or two
at the light and it heads over to the hot side.
I rigged a Trail Tech gauge in the discharge side to verify the gauges accuracy.
 Temp sensor installed. |
 Engine running and getting warmed up. |
 After a couple miles |
 Idling in the garage |
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 Fan came on about now. Service manual says it should come on at 105C, so this is about right. |
 After approx.40 secs, the fan switched off. The manual says it should switch off at 98C, so this appears to be a little early. |
 Eventually the motor reaches 108C, after about 4 minutes of idling. |
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June 2018 Madura Crisis: Coolant in the engine oil
First there was this very faint, odd ticking sound, nor-rythmic, coming
from...somewhere in the engine. Then it got louder, and impossible to ignore.
Then the coolant level dropped and the engine oil turned brown.
Saxon mechanic Matt Boyd said: waterpump. Here it's clear the bearing was kaput.
And the impeller got chewed up pretty bad, too.
Lot of slack in the waterpump chain to start with. |
Not good! A sight no one wants to see. |
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Got to wonder, where all that metal went? Bottom of the radiator?  |
The bearing is totally shot.
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Last revved up: 06/24/2018