fixitrod Posted November 2, 2003 Report Share Posted November 2, 2003 The exhaust cut is on the super stock. The power pistions are just what meat has posted. As far as people breaking the skirts... warm up warm up warm up. Those pistons may take an extra minute or two being they are thick. After that I can't see a problem. I know you ride a lot meat so if they were a problem, you would have had one by now. This is good info. Thanks again for the pics. Quote Link to comment Share on other sites More sharing options...
SICK BOY Posted November 11, 2003 Author Report Share Posted November 11, 2003 UPS just droped off my pistons.That link that fixitrod posted is right.They are vito's cast power pistons,and come in the vitos "top end repair" box with vitos instructions and stickers,and everything needed for a top end job just like you ordered if from vitos BUT cheaper.If your thinking of ordering go for it these guys were great..... Quote Link to comment Share on other sites More sharing options...
Justintoxicated Posted November 11, 2003 Report Share Posted November 11, 2003 I thought Vitos were forged, arent they made by weisco? I thought weisco only made forged pistons? Interesting though, But I thoguht warming the shee up was not as important (or dyer rather) with cast pistons? Is that perhaps why they make them thicker than weiscos? Because they are cast? Quote Link to comment Share on other sites More sharing options...
SICK BOY Posted November 12, 2003 Author Report Share Posted November 12, 2003 Weisco makes cast and forged,and all of vitos pistons have heavy duty piston skirts. Quote Link to comment Share on other sites More sharing options...
pacwestroost Posted November 12, 2003 Report Share Posted November 12, 2003 I had some vitos pistons they ran exellent The biggest difference is the vitos pistons have a cut made on the exhaust side top of the piston that changes transfer timing. Its the same thing as cutting your the exhaust port in the cylinder higher. Quote Link to comment Share on other sites More sharing options...
fixitrod Posted November 12, 2003 Report Share Posted November 12, 2003 I don't think the piston changes transfer timing does it. I know it changes exhaust timing, but I didn't think it changed transfer timing. Quote Link to comment Share on other sites More sharing options...
cougar67 Posted July 16, 2006 Report Share Posted July 16, 2006 I don't think the piston changes transfer timing does it. I know it changes exhaust timing, but I didn't think it changed transfer timing. i have a set of super stock in my shee. I am wondering if the notch on the ex. side would cause me to lose abit of cylinder pressure..I had .080 over piston with a 19cc dome on my old shee and im pretty sure it had about 185 psi,,on my new banshee i have same bore as the old shee but used vito's SS with the exhaust side cut and im only getting 155psi with a 18cc dome. Quote Link to comment Share on other sites More sharing options...
RILS Posted July 16, 2006 Report Share Posted July 16, 2006 i have a set of super stock in my shee. I am wondering if the notch on the ex. side would cause me to lose abit of cylinder pressure..I had .080 over piston with a 19cc dome on my old shee and im pretty sure it had about 185 psi,,on my new banshee i have same bore as the old shee but used vito's SS with the exhaust side cut and im only getting 155psi with a 18cc dome. I guess they could lower your compression a little but what is your elevation?I would guess if you were running 19s @185 you would be close to sea level and if this is the case than 155 is real low with 18s. Quote Link to comment Share on other sites More sharing options...
cougar67 Posted July 16, 2006 Report Share Posted July 16, 2006 I guess they could lower your compression a little but what is your elevation?I would guess if you were running 19s @185 you would be close to sea level and if this is the case than 155 is real low with 18s. my elevation is around 800ft ,,i checked the ring gap when i installed and they were rite on with Vito's specs ,,Doesnt make sence to me ..unless the guage i used to check my other banshee back then was off..Also, i checked my cylinder pressure B4 and after the rebuild with the same guage and according to it i went from 90psi to 100 psi with new bore,pistons,rings.. That blew me away. if ring gap is ok what could cause the loss in cylinder pressure..i have shearer pipes,,VForse3 reeds,,pro disign cool head(18domes) the jugs are ported on the reed intake,cross overs and exhaust the only port timing that was changed was from the piston being notched on the exhaust side. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted July 16, 2006 Report Share Posted July 16, 2006 i have a set of super stock in my shee. I am wondering if the notch on the ex. side would cause me to lose abit of cylinder pressure..I had .080 over piston with a 19cc dome on my old shee and im pretty sure it had about 185 psi,,on my new banshee i have same bore as the old shee but used vito's SS with the exhaust side cut and im only getting 155psi with a 18cc dome. I guess they could lower your compression a little but what is your elevation?I would guess if you were running 19s @185 you would be close to sea level and if this is the case than 155 is real low with 18s. my elevation is around 800ft ,,i checked the ring gap when i installed and they were rite on with Vito's specs ,,Doesnt make sence to me ..unless the guage i used to check my other banshee back then was off..Also, i checked my cylinder pressure B4 and after the rebuild with the same guage and according to it i went from 90psi to 100 psi with new bore,pistons,rings.. That blew me away. if ring gap is ok what could cause the loss in cylinder pressure..i have shearer pipes,,VForse3 reeds,,pro disign cool head(18domes) the jugs are ported on the reed intake,cross overs and exhaust the only port timing that was changed was from the piston being notched on the exhaust side. I guess you boys didn't realize this thread was from 2003.... Quote Link to comment Share on other sites More sharing options...
RILS Posted July 16, 2006 Report Share Posted July 16, 2006 I guess you boys didn't realize this thread was from 2003.... Acuatly i beleave he did a search and found a thread that related to his question which is a good way to find info. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted July 16, 2006 Report Share Posted July 16, 2006 True... But it's good forum Etiquette not to resurrect old threads, rather start a new one. Kudos to him for actually using the search...though... Quote Link to comment Share on other sites More sharing options...
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