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Wiseco piston
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Posted by: R_rocket

My 450 has a hot cams stage 1. I want to put in a piston. How much hp to u fellas think I will get with a 11:5:1 or maybe even a 12:5:1.

THANKS!

Posted by: Jersey450R

go with 11:1 so you can still run premium gas in there. You should still get maybe 2 horses out of it and keep the reliability of stock.

Posted by: chad502ex

ur r still able to run premium pump 93 on 12:1

10.5:1 to 11.5:1 is ~3% gain in rwhp
11.5: to 12.0:1 is ~1.5% gain

so 4.5% gain over stock hp

Posted by: jeepnrocks

I went with the 13:1 je, installing her sunday.
I am also going to be buying a 54 gallon drum of c-12

Posted by: team_450_88

I got the 13:1 Je....I run 110 octane

Posted by: R_rocket

How much power gain did you notice with the 13:1 pistions. Like really noticeable or not much at all.

Posted by: 450r35

I have the 11.5:1 piston and hotcam 1 works real good for woods racing lugs alot better than stock

Posted by: RAFFERTY1

i have a question while we are on the subject of fuel octanes if anyone can help?

im in the uk and our petrol is normally 97 octane would this be o.k for 13.5 to 1, and or 12.5 to 1 j.e. pistons?

my engine is flowed and ported anhas hrc kit (if this makes a difference)

im hoping it will be because i havent got a clue where to get race fuel in this country.

thanks in advance