Which Piston

[maynard22]

Weisco or JE?

[nowukno]

JE all the way!! ;)

[jak1389]

ja-ja-ja-ja-ja-ja-ja-ja-ja-JE!!!

[hondardr4life]

JE :macho

[Warnerade]

wiseco sucks...

[bloodhound400]

wiesco ownes je

[Warnerade]

Originally posted by bloodhound400
wiesco ownes je and correct spelling owned you.

[enduro400rider]

wiseco is a good piston. alot of people dont like them because with the 400ex motor their compression ratios are not correct because they were made exactly like the XR400 pistons. and the XR uses a thiner head gasket. if you put an XR head gasket on your 400ex the comp will be closer to what it should be.

[duke416ex]

I run a wiseco and have never had any trouble. Just whatever preference you have, or which ever you decide to go with.

[maynard22]

Duke416-

Did you run the thinner head gasket as was mentioned earlier in this thread?

[praetorian]

I am going with a GYTR for my YFZ450. I know its not the best, but I have faith that Yamaha pulled their heads out of their arses and did some research on the compatibility before they backed it. Only time will tell.

[wilkin250r]

Originally posted by enduro400rider
wiseco is a good piston. alot of people dont like them because with the 400ex motor their compression ratios are not correct because they were made exactly like the XR400 pistons. and the XR uses a thiner head gasket. if you put an XR head gasket on your 400ex the comp will be closer to what it should be.

The problem isn't just the headgasket. Even with a thinner headgasket, the comp ratio will still be really low. You need to eliminate the base gasket, a thinner head gasket, and then you'll start to get close.

[FoxRacing81]

JE...or Ross! :)

[400ex28]

JE for sure :cool:

[bloodhound400]

Originally posted by NacsRacer027
and correct spelling owned you. let me clear this up for u,wiesco ownes je,meaning wiesco bought out je,understand now!

[2001400exrider]

so if you get the JE for the ex then the stock head gaskets are fine? u will have the true compression?

Obviously no one reads what he meant :)

JE=wiseco and wiseco=JE now so no matter who thinks what sucked the most they will both suck equally since its now under one company.

I have had wiseco in my 500 with Zero Problems.

[bloodhound400]

Originally posted by DierWolf
Obviously no one reads what he meant :)

JE=wiseco and wiseco=JE now so no matter who thinks what sucked the most they will both suck equally since its now under one company.

I have had wiseco in my 500 with Zero Problems. THANK YOU!!!

[bloodhound400]

the old je maybe you wouldnt need a thinner head gasket,wiesco bought them within the past year,so now who really Knows what you need,maybe ross,i just really dont no.

[EPDP99]

je is still je even though wiesco owns them, they arent changing the pistons and je is still the ones making custom pistons. wiesco doesnt.

[bloodhound400]

thats not what i was told buy the guy that orders all my stuff,he sells both and said if i have to do it to one you will have to do it to the other,who really knows,the only one that would really know would be wiesco,and i wouldnt take their word for it,you no what i mean!

[Warnerade]

Originally posted by bloodhound400
let me clear this up for u,wiesco ownes je,meaning wiesco bought out je,understand now! once again, spelling got the best of you. The word you are looking for is "owns"...i knew what you meant form the begining.

[bloodhound400]

got ya,didnt realize i was dealing with a spelling teacher,but no you really didnt no what i meant.

[Mxjunkie]

I run wiesco in everything I own, their banshee pistons arent cheap though almost 110 a piece :o

[duke416ex]

Originally posted by maynard22
Duke416-

Did you run the thinner head gasket as was mentioned earlier in this thread?

I used a three plate steel cometic gasket. The place I ordered from messed up and got me a 10.5 :1 instead of an 11:1 like I wanted. I never have checked to see what the true compression is, but I have had no trouble with the set up at all, none. I have had the set up for about a year and a half now. I am thinking of going back through the motor though just to insure that everything is good and to replace the rings and stuff for security. If I do I am going to remove the base gasket and use the same type head gasket again.

[chucked]

Je requires less prep then weiseco

[Warnerade]

Originally posted by bloodhound400
got ya,didnt realize i was dealing with a spelling teacher,but no you really didnt no what i meant. ya your right, i had no idea wiseco owns JE...becuase it was such an atomic secret that only narrow minded guys like you are privy too, right?:ermm:

[bloodhound400]

Originally posted by NacsRacer027
once again, spelling got the best of you. The word you are looking for is "owns"...i knew what you meant form the begining. i just try to share a little useful info but thier always has to be a d**k in the bunch, but for a spelling teacher you made an error too...you must have meant to type the word "from" not "form". Ha, ha!!

[Warnerade]

i let weisco go, you can let form go.

[Cody_300ex]

Weisco;)

[Warnerade]

Originally posted by Lil_300Ex_Kid
Weisco;) :eek:

[EvilJester400EX]

CP pistons. ;)