Fuel Octane?

[liljake]

Would like to know if i can go back to running 93 octane or if i should stay with 100 i do a lot of riding in wisconsin long rides and its a pain in the ass to find 100 up there(32:1 dominator). And if i cant go back to running 93 should i turn up my stator, its already at +4 thanks

 

k and n filters no air box

28mm pwk carbs

v force 4 reeds

4mill 115 rod crank

cool head

20cc cut domes (not the spacer base plate)

Hardcore MX port by hjr

DMC 916

[trickedcarbine]

Bore?

[ginger]

we will need altitude, compression, and riding temp to see if its possible. 

[liljake]

bore 60 over

sea level, is mostly chicago area and wisconsin so anywhere from 600' to 1500' i am always on top of jetting it.

And being fall time where im at temp wise the weather is bipolar as fuck but ill be riding in 50-65 degree weather.

compression is 180-185

[sheerider11]

Why don't you call the guy that set up your motor..

[sleeper06]

You need 24 cc domes with that set up

[liljake]

With 93 octane?

Or a 100 the way im running it now

[sleeper06]

To be honest I would run 110 in what you got without cc it it's close to 14:1 , to run 93 you need the 24's

[liljake]

Ok I just did the top end on it last month so I don't want to change the domes again ill just run 110 for the rest of the season. So if I'm doing that could I up my timing a bit more?

[trickedcarbine]

Yessir

[liljake]

I'm at +4 now do you think 6 or 7 would be safe...maybe 8?

[trickedcarbine]

Crank is welded? If your fuel is good, +7 is about as high as I'd go.

[liljake]

Ya its welded

[sleeper06]

Are you cylinders off side to side 5 psi

[liljake]

No their both pretty much the same the gauge was actually right about 183 psi between the two.