Pumpgas,octane, compression ??

Another member raised this on another thread. What octane is needed for higher compression? What are you doing to get there? Anyone using octane booster. Buying special fuels? Pulling timing? What is a good compression for a street motor?
I am running a 1075 kit, 10/1 I believe.
Wayne

Its the actual cranking compression numbers you need to worry about and it has a lot to do with cam lift and duration and cam timing.

kz 1000.....1075

10.25 to 1

Im running Turbo Blue racing fuel.....110 octane.

I can really tell difference over pump gas....smells cool when burt also...LOL

4TheKZ1000 wrote: kz 1000.....1075

10.25 to 1

Im running Turbo Blue racing fuel.....110 octane.

I can really tell difference over pump gas....smells cool when burt also...LOL

I bet that gets expensive i just run only premium 93 octane. Sometimes i go to the gas station close by where they sell 110 octane and get some and mix it half half. I can tell a diffrence, But it isnt neccassary to run that high octane. It does smell good when burnt also. Like wireman said it all depends on your engine.

wireman wrote: Its the actual cranking compression numbers you need to worry about and it has a lot to do with cam lift and duration and cam timing.

So how does one get these numbers and how do I use them when I get them? I cannot remember what I degreed the cams to. Cams are a mild drop in. My hearing is not good enough to pick up pinging. Bike runs great and I want to keep it that way
Wayne

1075 10.5-1 with pretty agressive cams and I run 93, if it pings a little I add booster. I like to run the lowest octane I can. I don't run race fuel and don't see any need at all on a low compression motor like these.
4thekz, I hope turbo blue is better in your area, worst fuel I've ever seen! Everybody had problems with it around here to the point they quit selling it, nobody would buy it.

Les

kzz1king wrote:

wireman wrote: Its the actual cranking compression numbers you need to worry about and it has a lot to do with cam lift and duration and cam timing.

So how does one get these numbers and how do I use them when I get them? I cannot remember what I degreed the cams to. Cams are a mild drop in. My hearing is not good enough to pick up pinging. Bike runs great and I want to keep it that way
Wayne

Get a compression tester from auto parts store would be first thing if bike is up/running

Jim is correct if you gotta know exactly. But it i were you i would just always run 93 and you will be allright. Ive been running it for a while with no problems. It sounds like you have a mild build. I wouldnt worry about the race fuel unless you like spending almost $7 a gal on gas.

i run 91 octane here in Canada with 10.25:1. no ping here but i also run
a Dyna2000 . it has an electronic advance curve that can help if u have a ping.

Apologies for a somewhat off-track question, but does someone make a combination compression and leak down tester, or are they separate entities?

I know the mechanics behind each method, just trying to save myself a few bucks.