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View Full Version : 10:1 wiseco need help!


pattheriault
10-13-2005, 07:12 PM
i ride a 2001 400ex it is jetted had megamax pipe and k&n air filter...
I would like to know if a 10:1 wiseco piston would be a good buy and will i need to do any other mod to ride that piston? or ride higher octane gas??
2muchquad
10-13-2005, 07:58 PM
no other mods are needed,premium pump gas would be all you'll need;)
10-14-2005, 10:19 AM
you will see bigger gains from a cam.
pattheriault
10-14-2005, 01:39 PM
ill may get better performance with a cam but i need to change the piston anyway so...

thx for your help!
gojk
10-14-2005, 02:36 PM
For the same cost you can go to 11:1 or 10.8:1 and get better gains.
You will just be sitting right at the limit of running pump gas or a pump/race gas mix.
tater_kamik
10-14-2005, 03:55 PM
i would do an 11:1 piston with an good matching cam for overall gains and to still be fine with pump fuel
pattheriault
10-24-2005, 07:41 PM
is there a big difference between the 11:1 and the 10:1???
gojk
10-24-2005, 08:09 PM
Originally posted by pattheriault
is there a big difference between the 11:1 and the 10:1???

Enough of a diff to use it. IMHO
400exrider707
10-24-2005, 09:53 PM
Originally posted by gojk
Enough of a diff to use it. IMHO

I agree, no point in doing 10:1 really, the 11:1 will be reliable.
F-16Guy
10-25-2005, 10:05 AM
I agree with the 11:1, or 10.8:1 if you use a JE. You might as well do a cam while it's apart, because I can almost guarantee that you'll do it eventually. If you do something like a stage 1 or 2 hotcam, or an HRC cam if you can afford it, you'll see big gains throughout the powerband. A piston/cam combination is the biggest bang for the buck once you get a pipe and filter.
pattheriault
10-25-2005, 01:24 PM
thx every one! I think i will go with the 11:1!