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I have three of the 3 mintors head on my YS 140 RX, it does lower the
idle and make them smoother, the link is
<a href="http://www.mintor3m.it/Index.htm" eudora="autourl">http://www.mintor3m.it/Index.htm</a>
just send him an e-mail.<br><br>
There is actually two Japanese dual plug that I know of none from OS to
my knowledge, the link is
<a href="http://www.hobbynet.com/" eudora="autourl">www.hobbynet.com</a>
I used a translator available on the web (free) Bellwood is the company
producing them they seem to do high end product out of aluminium and
carbon fiber, the head number are 150142 for the green one and the is one
larger non anodized number 150141, for the green one there is also the
option for a additional piece (call sub head sink)that can be bolted in
the center. green 13000 yen (with sub) and the other one is 9800
yen......I don't have either of these two.<br><br>
Daniel D.<br><br>
<blockquote type=cite class=cite cite><font size=2>Mike,</font> <br>
<font size=2>How does one purchase either of these heads?</font>
<br><br>
<font size=2>--Lance</font> <br><br>
<font size=2>Hi all,</font> <br><br>
<font face="Times New Roman, Times"> </font><font size=2>The green Japanese twin plug head is a bolt on option that even has another heat sink piece. Didn't have too much luck with the extra piece, the engine was hard to warm up and would sometimes die before take off. Removing the second piece solved that. The idle was incredibly low at around 1300, and transition was the smoothest of any OS I have seen yet. This particular engine also used an exhaust valve on the stinger, and in conjunction with the head, made for the smoothest OS I have seen to date.</font> <br><br>
<font face="Times New Roman, Times"> </font><font size=2>it's worth noting that the green japanese head is bigger, and is hell on chin cowls with hyde mounts =P</font> <br><br>
<font face="Times New Roman, Times"> </font><font size=2>The 3M purple head from Italy is also supposedly the same bolt pattern as the OS, although I haven't had any personal experience with these. If it works the same as the green one from Japan, this could be a good investment. </font><br><br>
<font face="Times New Roman, Times"> </font><font size=2>I understand the 3M Mintor engine it was made for is a real work of art, and I may try to obtain one of these myself soon. </font><br><br>
<font face="Times New Roman, Times"> </font><font size=2>-Mike Hester</font> </blockquote></html>