[High On Octane]

Of course, I charge the battery yesterday and she won't run.  Idles for 3 seconds and dies.  I'm going to replace the fuel tonight and try again, but I have a feeling I need to clean the carb.

[High On Octane]

I had ERC measure a conrod for me (because I don't have one handy and can't for the life of me remember how long it is).  Turns out I was wrong.  It is neither 6 3/8" NOR 6 5/8", it is 6 1/8".  But no worries to be had.  A quick search and found that the A65 and A10 have the same crank journal, only the A10 is 6.5" CtC and the A65 is 6" CtC.  So I'm still in good shape. 


http://www.mapcycle.com/map/index.php/categories/engine/bottom-end/con-rods/conrod-a50-a65-6-0-4340-h-beam-pr.html


Also, I just noticed that the Nikisil T120 pistons for $300 are for the Big Bore kits starting sizes at 76mm, which is way to big for my needs.  For 1 it will exceed 750cc which will put me at the bottom of the 850cc bracket for Bonneville.  Plus I don't think the cylinders can take that big of a bore.  So a No-Go on those pistons.

So I'll need to spend $350 for the full race forged pistons:
http://www.mapcycle.com/map/index.php/categories/engine/top-end/pistons/triumph-t120-tr6-650cc-forged-pistons.html
 

Or $100 on the "High Quality" cast pistons, that seriously look like a damn good piston for $100.
http://www.mapcycle.com/map/index.php/categories/engine/top-end/pistons/triumph-650-1958-later-piston-set.html

Yay!  Found it!  Wish I had started looking back into this thread from front to back, as it was on page 5.   

But man, looking back thru I realized there are some bugs that need to be addressed.  Totally forgot this thing has bad valve guides and seats.  I know HC's has guides available in std and over-size options.  What size should I got with?  I've never had to do guides before, so don't know how that works.  Any input would be appreciated.

[ace.cafe]

If you remove or change guides, you must do a valve job or the valve will no longer be concentric with the seat.