Honda C27 Alternator Boost Diode

[PTR200S]

32 minutes ago, Laird_Scooby said:

Yeah, i forgot to mention you need a cloth/rag to remove it when the engine is hot. Does get quite warm but doesn't drop lumps of plastic into the rocker cover like i saw one plastic OE cap do when it disintegrated! 😮

 

Mine's been on for at least 8 years, no problems at all.

Nice cap, Dave !!! Bit concerned about the cable that appears to be cut above cap though !!! 😁

[Laird_Scooby]

5 minutes ago, PTR200S said:

Bit concerned about the cable that appears to be cut above cap though !!! 😁

Thanks Pete, the reason that wire (alternator battery sense) is cut is to fit an alternator boost diode :

 

This was to increase the voltage output from the alternator to cope with those poxy silver-calcium batteries :

As you can see!

[PTR200S]

Ah,  I recall, is 14.72 your new output ???

[Laird_Scooby]

It varies between 15.1 - 14.7V when charging Pete, once charged it doesn't try and push any more current in and keeps the voltage (usually) between 13-14V.

Sadly the previous battery died from lack of use earlier this year so had to renew it again. Now i've started off with the correct charging voltage, this one seems to be playing the game as it should.