i have the big wiseco kit

[01440ex]

12.5-1 compression is that a 440 kit or bigger

[drew416ex]

The compression has nothing to do with displacement. Its the bore size that changes it. 86mm is a 406, 87mm is a 416, 88mm is a 426, and a 89 mm is a 440

[ride-to-live]

I got a 440 with a 13:1? But its not wiseco...

[01440ex]

i just had the part number off the piston and was wondering...i know it is a wiseco because the part number matches the one off the piston...on a higher compression due i want to run higher octane or lower octane...and it is 89mm bore...any clues as to what jets to be running in it...it has stock exhaust with stock filter also...dont know if it has a cam or not..i bought it with the kit in it

[drew416ex]

Yes, you will need to run around 110 octane with that compression. Not too sure about jetting. Probably go up one size on the pilot and around a 165 or 170 main. If you want the bennefits from that piston you should invest in a cam and exhaust.

[01440ex]

any recomendations on exhaust or a cam...im up for anything...

[ride-to-live]

i like what i got.. its a noleen hvo exhaust and stge 2 hotcams

[drew416ex]

Stage 2 hotcam and there are so many pipes I dont know where to begine because everyone has there own opinion. I personally think the sparks x-4 or x-6 is the best for the 400. Others like FMF, HMF, DMC etc. Im sure all of them are good, but I would rather have a sparks. They look good, sound great, and definitely add power, but like i said, thats just my opinion.

[01440ex]

where can i find a sparks exhaust at....and what kinda tone did u get out of it...

[drew416ex]

you can get a sparks x-6 on ebay, or you can get an x-4 or x-6 directly from sparks at www.sparksracing.com. Other places have them but im not sure who. The tone is awsome. Has a nice deep tone. As soon as you crank it up you will have a grin ear to ear.

[oleboy87]

go to yahoo and search "sparks exhausts" and its going to pull it up