Here's what I wanted to do this winter...Have a 907cc/JE piston big bore done and help it breathe via a '92 750 valve head. So I bought '86 & '92 valve heads on ebay for dirt and found a second cylinder head too. So I ship off the '92 VH and CH to the machinist and I get a call with two questions...
"when are you gonna send us the top case so it can be machined"
...dammit...I didn't read the instructions but they're right...907/955 big bores have to have the top case machined...argh. <http://www.gixxer.com/cgi-bin/images/icons/mad.gif>
I don't suppose there is a way around that total dissasembly of the bottom end for that ...is there?
The other question they asked...
"were you aware the 91/92 valves are prone to tossing shims and this results in evil things to the motor"
Any anecdotal info on that claim? Is it likely? I thought the more modern design is the "better" one. Last fall I asked if I should flow bench/port the '86 head and Jeff & others suggested the '91/92 VH 'cause it is ready to take the 38mm carbs I have.
WTF am I to do? Bite the bullet and rip it apart totally? It's only money but now it is gonna cost the same $$ as a 1100 motor. <http://www.gixxer.com/cgi-bin/images/icons/tongue.gif>
"when are you gonna send us the top case so it can be machined"
...dammit...I didn't read the instructions but they're right...907/955 big bores have to have the top case machined...argh. <http://www.gixxer.com/cgi-bin/images/icons/mad.gif>
I don't suppose there is a way around that total dissasembly of the bottom end for that ...is there?
The other question they asked...
"were you aware the 91/92 valves are prone to tossing shims and this results in evil things to the motor"
Any anecdotal info on that claim? Is it likely? I thought the more modern design is the "better" one. Last fall I asked if I should flow bench/port the '86 head and Jeff & others suggested the '91/92 VH 'cause it is ready to take the 38mm carbs I have.
WTF am I to do? Bite the bullet and rip it apart totally? It's only money but now it is gonna cost the same $$ as a 1100 motor. <http://www.gixxer.com/cgi-bin/images/icons/tongue.gif>