for my kfx400
when i run the following compressions how much octance should i be using.
12-1
12.5-1
13-1

 

you should run between 102 and 110.

 

for which compression? all of them? i need to know specifics.. my dad works at the williams refinery and i can get my hands on any octance i want... need to know exactly which ones to run at which compression. for optiumum performance

 

too much octain is never bad just a waste of money.

102 for the 12/1
106............12.5/1
110.............13/1

you may be able to run less but with this you'll be safe.

 

Any thing over 100 for any of those compression ratio's will be fine.

 

I run 114 octane for my 14.5:1 compression.....


13.5:1 needs 110
13.0:1 needs 108
and anything below that will vary from around the 100 octane, plus or minus...

 

you have access to any octane fuel you want. you are a very lucky guy!

 

sounds like life is good in alaska[img]i/expressions/face-icon-small-smile.gif[/img] about 105 should have it covered.

 

Just to add a little to your thread,...
My racing season for my car is near an end,and I happen to still have
3/4's of a pail of 114 octane fuel,....and seeing as I'd hate to waste it(teehee) I was wondering if it would cause any problems if it "happened" to fall into my "STOCK" Z400? Probably not, but I thought I'd best check with you guys,.....

Thanks in advance,kyle