Higher octane in stock 400ex engine?

[Ty's400]

I was wondering if it would hurt or be hard on my stock 400ex engine to run Klotz's 100 octane or a little bit higher. I have always run premium (97) in it, but I'm thinking about running 100 or something just for when I race. Would this be hard on the engine? Also if I run 97 most of the time then bump it up when I race? Thanks for the help.

[Cody_300ex]

I used to always run Vp 108 or 110 race gas in my 300ex when it was stock. When I tore it down it looked fine, just a little carbon build up.

[BeltSlipper]

why waste your money. Without a high compression motor, it's really not needed.
Just me 2 cents

[hondarider2006]

Originally posted by BeltSlipper
why waste your money. Without a high compression motor, it's really not needed.
Just me 2 cents


Word;)

Your pissen your money away. Sponsor me and put race gas in my quad please..:D

[EXDUNER127]

all that klotz octane booster really does is lean ya out some. If you are running rich and dont wanna rejet, it works!:D

[Quadzilla]

Waste of $$$ on stock internals motor. Too high of an octane can actually hurt performance (but not hurt anything mechanically) on a lower compression motor like the stock 400EX...

[Ty's400]

Thanks for the help guys. Definetely sounds like I don't want to use it. I just wasn't sure if it'd make much difference. I'm sponsored by Klotz so I can get the race gas for real cheap but it sounds like it'd just be a waste. Thanks again.