jrmarquez.702 Posted January 12, 2010 Report Share Posted January 12, 2010 i have an extra set of new 68mm wsm pistons, does anyone run these? are they any good? Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted January 12, 2010 Report Share Posted January 12, 2010 If they are the forged ones they are good. I think they have some cheaper cast ones as well. They are lighter than wisecos, make a little more HP but they do not like detonation from my understanding. I have them in my Nate McCoy built 421 CUB. Quote Link to comment Share on other sites More sharing options...
jrmarquez.702 Posted January 12, 2010 Author Report Share Posted January 12, 2010 If they are the forged ones they are good. I think they have some cheaper cast ones as well. They are lighter than wisecos, make a little more HP but they do not like detonation from my understanding. I have them in my Nate McCoy built 421 CUB. yea, they're the forged pistons. ill be running them in my 10mil, hopefully they hold up....thanks Quote Link to comment Share on other sites More sharing options...
T_Shee Posted January 13, 2010 Report Share Posted January 13, 2010 im not a drag racer but im running the forged ones and like them so far as well. my squish band was quite a bit higher when i put them in compared to the wisecos i had before Quote Link to comment Share on other sites More sharing options...
jrmarquez.702 Posted January 13, 2010 Author Report Share Posted January 13, 2010 sweet, i got these pistons a while ago when i bought a top end and the guy gave them to me free. ive just been nervous because all i have ever used before is wisecos..thanks for the information. Quote Link to comment Share on other sites More sharing options...
Bansh-eman Posted January 13, 2010 Report Share Posted January 13, 2010 WSM are good. They need to have the proper tolerances set just ike any piston. There are a few "Big Name" builders that use them. Quote Link to comment Share on other sites More sharing options...
jrmarquez.702 Posted January 13, 2010 Author Report Share Posted January 13, 2010 WSM are good. They need to have the proper tolerances set just ike any piston. There are a few "Big Name" builders that use them. proper tolerances? im cornfused, lol. are you talkin about compression? Quote Link to comment Share on other sites More sharing options...
bada450r Posted January 13, 2010 Report Share Posted January 13, 2010 proper tolerances? im cornfused, lol. are you talkin about compression? his probably talking about squish, ring gap things like that... Quote Link to comment Share on other sites More sharing options...
rubberneck Posted January 13, 2010 Report Share Posted January 13, 2010 I believe that i read the WSM pistons have the same crown profile as a stock banshee piston. Therefore you will need a different shape dome than the standard cub with blaster pistons would use. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted January 13, 2010 Report Share Posted January 13, 2010 I believe that i read the WSM pistons have the same crown profile as a stock banshee piston. Therefore you will need a different shape dome than the standard cub with blaster pistons would use. That's exactly right. Blaster pistons (Wiseco 573M6800) have a different dome angle than the WSM. So make sure you have a set of domes cut for the WSM piston dome, NOT the wiseco dome. I know Nate McCoy loves these...and my buddy fouledout had a set in his McCoy 4 mil cub and it ran forever and ripped... Quote Link to comment Share on other sites More sharing options...
Bansh-eman Posted January 13, 2010 Report Share Posted January 13, 2010 proper tolerances? im cornfused, lol. are you talkin about compression? Tolerances being ring gap, piston to wall talerances ect. You can't put a piston in a hole without giving it room for expansion or your going to blow the motor. Each manufacture is differant depending on what metals are used. There should be info on the website to tell you the tolerances. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted January 13, 2010 Report Share Posted January 13, 2010 I would agree wholeheartedly with bansheman regarding reliability and operation of the motor. The squish, unless unreasonably tight, has more to do with the efficiency and performance of the motor. I wouldn't say that is as important as wall clearance or ring gap, but nonetheless is it important in overall motor health... Quote Link to comment Share on other sites More sharing options...
Bansh-eman Posted January 13, 2010 Report Share Posted January 13, 2010 Not to mention that no piston manufacture I have ever seen gives any suggested tolerances for squish. Just make sure that who ever you get your domes from has them properly cut for the crown angle and desired squish. If you have a local builder, have him check the pistons and cylinders to insure they are matched. Quote Link to comment Share on other sites More sharing options...
jrmarquez.702 Posted January 13, 2010 Author Report Share Posted January 13, 2010 great, thanks for all of the help. Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted January 14, 2010 Report Share Posted January 14, 2010 As they all said it depends on what piston your motor is using now. If its a blaster piston you are using the banshee piston will be completely wrong. Those two pistons have a different pin to crown height as well as degree dome. With the WSMs also make sure you gap the rings, they might only be 5 to 8 thous, I gap mine .012. Quote Link to comment Share on other sites More sharing options...
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