'04limited Posted April 5, 2008 Report Share Posted April 5, 2008 ok guys i did a search on this but didnt get the answers i was looking for so maybe you guys can help me out. i am in the process of redoing my motor the question i had for you was do i go with a set of weisco pistons or do i use a new set of oem yamaha pistons? the cylinders look really good no scrathes or anything so i was just gonna get them honed when i have the dune port done. the local shop that i spoke to here in phoenix. D&M racing said that i should go with the weisco's because with a dune port i will see more rpm on the motor and that the oem pistons will not support the higher rpm and the pistons will break. how does this sound to you guys? i kinda wanted to stay with the oem pistons because it seems that in my personal experience alot of people i know have had problems with wiesco. what is your opinion on wiesco pistons? or on oem pistons? Quote Link to comment Share on other sites More sharing options...
Toomey Banshee Posted April 5, 2008 Report Share Posted April 5, 2008 Weisco. Have a set in the 99 going on 4 or 5 seasons now, no problems what so ever. Actually never heard of anyone having problems with Weiscos. Quote Link to comment Share on other sites More sharing options...
98_shee Posted April 5, 2008 Report Share Posted April 5, 2008 ok guys i did a search on this but didnt get the answers i was looking for so maybe you guys can help me out. i am in the process of redoing my motor the question i had for you was do i go with a set of weisco pistons or do i use a new set of oem yamaha pistons? the cylinders look really good no scrathes or anything so i was just gonna get them honed when i have the dune port done. the local shop that i spoke to here in phoenix. D&M racing said that i should go with the weisco's because with a dune port i will see more rpm on the motor and that the oem pistons will not support the higher rpm and the pistons will break. how does this sound to you guys? i kinda wanted to stay with the oem pistons because it seems that in my personal experience alot of people i know have had problems with wiesco. what is your opinion on wiesco pistons? or on oem pistons? wiseco prolites Quote Link to comment Share on other sites More sharing options...
BellicoseBanshee Posted April 5, 2008 Report Share Posted April 5, 2008 I would go with the Wiseco Pro-Lite pistons. THIS has some interesting information and not very long (5 pages). Quote Link to comment Share on other sites More sharing options...
bansheejoel Posted April 5, 2008 Report Share Posted April 5, 2008 wiseco pro-lites have my vote, ive used wiseco in ALL of the engines i have rebuilt with zero problems!! :beer: Quote Link to comment Share on other sites More sharing options...
rjatv Posted April 5, 2008 Report Share Posted April 5, 2008 I'd go with wiseco 100% and if your looking for a great deal check out our prices at www.rjatv.com Quote Link to comment Share on other sites More sharing options...
ABL Posted April 6, 2008 Report Share Posted April 6, 2008 Wiseco pro lite. They get a bad name for seizing but that is almost always due to cold seize/improper warm up. Been using them in my snowmobiles for years now, they outlast cast OEM pistons all the time. ABL Quote Link to comment Share on other sites More sharing options...
'04limited Posted April 7, 2008 Author Report Share Posted April 7, 2008 thanks for all the repiles guys. well one of the main questions that i was asking was that with a dune port will the motor rev higher causing the oem pistons to fail? or will they still be ok to run? i was planning on keeping the stock pistons till i need a new top end because the cylinders still look really good i was just gonna hone 'em and put some new rings on. but if this is gonna cause me problems i will replace the pistons also. Quote Link to comment Share on other sites More sharing options...
slowblueshee2 Posted April 9, 2008 Report Share Posted April 9, 2008 I think the biggest killer of the oem pistons would be compresion because the are cast. Would you put cast pistons in your motor if you building a hot rod? Quote Link to comment Share on other sites More sharing options...
LS1Inferno Posted April 9, 2008 Report Share Posted April 9, 2008 wiesco has a monoply becuase they are teh ONLY good piston. and thet just jacked their prices if anyone hasnt noticed Quote Link to comment Share on other sites More sharing options...
dajogejr Posted April 9, 2008 Report Share Posted April 9, 2008 Prolites all the way, but if you could score a deal on forged WSM, I'd have no reservations about using them either. Quote Link to comment Share on other sites More sharing options...
KX666 Posted April 11, 2008 Report Share Posted April 11, 2008 The banshee motor is a low compression motor (even after you mil the head, unless you have a crazy set up) Forged pistons are not needed, They are heavier than cast, Take longer to worm up Expand upon worming shorter life span than cast. But they will hold up to much higher compression than cast I have had good luck with Vertex Pistons, they are ceramic coated. which runs more efficiently and last longer. I milled the head on my banshee and i am running about 10:1 compression (fairly low compared to my other bikes, they have wisco pistons) I found that shaving down the dome on the vertex piston. Quote Link to comment Share on other sites More sharing options...
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