What octane gas should i run?

[Buckwild12]

I have a new to me ski, They guy i bought it from told me i can run 93 octane gas in it. I took it to a guy that runs a jetski shop who has raced and worked on a ton of modded engines and he told me i should be running at least a 4:1 93 octane, race fuel mix. and an oil ratio of 32:1. what do you guys think I should do? race fuel isn't that easy to come by where I live. I guess i can order a barrel of it online, but I'd rather not.

Here is my setup:
re-bored cylinders/ new pro-x pistons 82.5mm
epoxied and ported case
ported/polished cylinders exhaust ports and matched to b-pipe manifold
ported/matched intake to make way for full spectrum carb
chamfered all ports
all new yamaha gaskets
LPW lightened flywheel
b-pipe mod, ports matched and headpipe bored to 48mm
Full spectrum 48mm carb jetted to Ed's specs
ADA head with custom domes (slightly larger squish and higher comp for reliability)
185 compression
Hot rods crank
82.5mm pro-x pistons
flow control valve
stock electronics


Thanks all!

 

[Buckwild12]

Also BTW its a yamaha superjet in case you are wondering.

 

[SXIPro]

I think you are ok at 93 octane with your set up.

 

[SUPERTUNE]

Use a MSD Enhancer CDI would be the best advice for you and your good for straight 93* fuel.

 

[Freakrider]

I am running 190 psi no probs and some guys have run 200 on pump gas without wide open throttle runs...btw...40:1 is plenty of oil...:smoker: