[kingofdunes]

hello,
Somebody is trying to sell me a high comp piston and i have heard with the 13:8:1 piston that u lose top end is this true any help will be greatly appreciated
thanx

 

[lukester720]

The people i've talked to that have it said it made a good increase in the bottom and mid, but said that the top felt unchanged. I haven't seen a dyno on it but thats just what a couple people have told me.

 

[kingofdunes]

Ok thank u for your reply.
Desert since you said you wont go above 12:5:1 Then I wont I will just get the sparks piston 12:1. The reason I was asking is because this person is trying to sell it to me for 110. with shipping and was just wondering thank you

 

[oz450r]

would 98 octane fuel be ok with 12:1

 

[PICKLES]

12:1 would be fine on 98. 12:1 would be the highest that I would ever run on any kind of pump gas without adding like 1/2 race fuel to full race fun but u should be fine on 98 with 12:1