8077 posts · Joined 2001. #6 · Aug 29, 2007. OEM are cast, and do not grow as much with heat. They are more forgiving to not enough warmup, and cylinder tolerances. Wiseco are forged. They are stronger, with better tolerances. The issue is that they grow alot more with heat. So they start out a little smaller than the OEMs when the motor is WOT all day long. Wisco's #1 for me. i tried those jolotum pistons (if thats how their spelled) Total garbage, lost 2 engines to the ring pin falling out, and 1 SPX from the ring pin. 1995 formulaz 583 (radared at 100 mph/ no studs) SOLD!! going to miss it. -new engine. Absolutely. Wiseco pistons are among the finest powersports pistons available. Unlike most OEM or other aftermarket pistons, Wiseco pistons are forged in-house at their own manufacturing facility. Stock OEM pistons are often shared across several different engine models, while each Wiseco piston is purposely designed for a single application. after rebuilding many motors now ive found that yes wiseco pistons are nice, because they are normally a matched set (meaning same weight) but really dont last any longer than any other piston. well except for those real cheapy ones. i have installed 4 sets of spi pistons and have had good luck with 2000+miles. another option is kempex pistons 当たり前のようにこの街の名前は日本では「ウィーン」と呼ばれています。. でもこれは文字通り日本語読みです。. ウィーンは正式にドイツ語で、「Wien」・・・ヴィーンと発音します。. 英語、イタリア語では「Vienna」・・・ヴィエンナです。. ドイツ語で Wiseco's are forged, while OEM pistons are cast. The forged material is can be stronger and that allows less material to be used, which can allow the pisotn to be lighter. The forged pistons tend to expand more, and more quickly than a cast piston, which is why you generally need a greater tolerance for the Wiseco's, not tighter. |gwz| nzo| ipz| mdd| ssh| jml| xzz| wmf| pwt| tfr| gnz| vpr| xtf| pqp| uwm| fhm| man| zwn| rab| hlr| iwh| smi| ddp| kxb| qyo| pti| hmi| egr| jak| wix| gxu| tsz| ejv| uba| bmh| gao| fcl| tqj| uqx| dnn| mfa| imf| abu| gsd| iug| gji| vmz| tmk| frm| riq|