themechanic Posted March 27, 2012 Report Share Posted March 27, 2012 Sorry "themechanic" you're full of shit. Blaster's OE bores are 66mm. The pistons are forged and made by Wiseco to Vito's specs. sorry bud that information was right from vitos. Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted March 27, 2012 Report Share Posted March 27, 2012 I just ordered the Wiseco Prolites, not sure if the Vito's would ACTUALLY provide more power do to the modified Wiseco piston??? What do you mean, "Modified Wiseco Pistons"? Correct me if I'm wrong, aren't Vito's Superstock Forged Pistons made by Wiseco to Vito's spec's? The exhaust side of the pistons are cut in a way to mimic "ported" exhaust port duration and this increases power by up to 8hp. i used the superstocks and it took my cylinder from 65mm to being resleeved absolute junk IMO Hope you don't but, but I have some questions for you: Were the Superstocks you used, Forged or Cast? Were the cylinders freshly bored and honed? Was your tune spot on? Was a leak down test performed after assembly? Quote Link to comment Share on other sites More sharing options...
slothman Posted March 27, 2012 Report Share Posted March 27, 2012 What do you mean, "Modified Wiseco Pistons"? By modified I meant the cut of the piston that vito makes with the Wiseco piston. 8 HP would be a good gain, but I would like to see some dyno sheets to prove it Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted March 27, 2012 Report Share Posted March 27, 2012 i used the superstocks and it took my cylinder from 65mm to being resleeved absolute junk IMO Your motor was going to make so much more power with the Super stock pistons, that you needed a severe "Re-jet". 8 more HP will do that. Sorry to say it was user error, not piston failure. By modified I meant the cut of the piston that vito makes with the Wiseco piston. 8 HP would be a good gain, but I would like to see some dyno sheets to prove it Just look in the dyno section in the post titled "Random dyno discussion" The proof is all there. Enjoy. Quote Link to comment Share on other sites More sharing options...
slothman Posted March 27, 2012 Report Share Posted March 27, 2012 Your motor was going to make so much more power with the Super stock pistons, that you needed a severe "Re-jet". 8 more HP will do that. Sorry to say it was user error, not piston failure. Just look in the dyno section in the post titled "Random dyno discussion" The proof is all there. Enjoy. I will check it out ! Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted March 28, 2012 Report Share Posted March 28, 2012 My stock 87 cylinders need some love Is all of this kit good quality, ie., gaskets, http://www.vitosperformance.com/atv_parts/home.php?cat=212 Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted March 28, 2012 Report Share Posted March 28, 2012 My stock 87 cylinders need some love Is all of this kit good quality, ie., gaskets, http://www.vitosperformance.com/atv_parts/home.php?cat=212 That's the one we're talking about. Can't beat that price for the added performance. Keep in mind the jetting advice is pretty basic. (That kit + open air box.) So if you have pipes and any other add ons......go rich and work your way to lean. Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted March 28, 2012 Report Share Posted March 28, 2012 That's the one we're talking about. Can't beat that price for the added performance. Keep in mind the jetting advice is pretty basic. (That kit + open air box.) So if you have pipes and any other add ons......go rich and work your way to lean. Motor is stock 87 .020 over. RB Designs bored OE Carbs No TORS w/idle screws Toomey Needles 4th groove 280 Mains 25 Pilots Pods w/Outerwears VF3's I got for Christmas Chariot Billet Intakes, no cross-over HJR re-cut and rechambered head HJR clean-up port? HJR trued and welded stock crank T5's What jets are a good starting point with the above set-up at sea level? 350 mains 27 pilots Toomey Needles, 4th groove? I have a set of 35mm PWK A/S I scored for a song I could run, I'd imagine I'd loose a ton of bottom-end on a stock port motor. Quote Link to comment Share on other sites More sharing options...
themechanic Posted March 28, 2012 Report Share Posted March 28, 2012 By modified I meant the cut of the piston that vito makes with the Wiseco piston. 8 HP would be a good gain, but I would like to see some dyno sheets to prove it Hello Grant The only standard bore range Wiseco Superstocks currently that we sell are for the Blaster .080 & .090. The rest are machined and imported from Taiwan with forgings identical to Wiseco. Thank you for contacting Vito's Quote Link to comment Share on other sites More sharing options...
coryv4 Posted March 28, 2012 Report Share Posted March 28, 2012 Your motor was going to make so much more power with the Super stock pistons, that you needed a severe "Re-jet". 8 more HP will do that. Sorry to say it was user error, not piston failure. Just look in the dyno section in the post titled "Random dyno discussion" The proof is all there. Enjoy. it wasnt user error it was shitty pistons i was acually running a little on the rich side it took a huge ass chunk out of my exhaustport Quote Link to comment Share on other sites More sharing options...
themechanic Posted March 28, 2012 Report Share Posted March 28, 2012 it wasnt user error it was shitty pistons i was acually running a little on the rich side it took a huge ass chunk out of my exhaustport that means your clearance was wrong not junk piston. Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted March 28, 2012 Report Share Posted March 28, 2012 To "themechanic", so do you work for Vito's? If so, do you have 65mm Wiseco made and modified Forged Superstock Pistons in stock? Quote Link to comment Share on other sites More sharing options...
slothman Posted March 28, 2012 Report Share Posted March 28, 2012 What jets are a good starting point with the above set-up at sea level? 350 mains 27 pilots Toomey Needles, 4th groove? Do you ride at Pismo ? I think you might be OK with 280 main and 25 pilot @ sea level, but each quad is different. Have you done a plug chop yet? How do the plugs look? From the jetting thread: "In a lean condition the engine will surge and sometimes ping under acceleration. The engine will also be "cold-blooded" (hard to start and keep running) but will run better when hot. The spark plug will look bone white or burned in extreme cases. The engine may spit back or sneeze through the carburetor once in awhile too.. If the engine is running rich the throttle response will be fuzzy and not too quick. The engine will burble, miss and blow black smoke. It will start easy but will run funny when fully warmed up. The plug will be dark, wet or fouled (possible all three!)." Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted March 28, 2012 Report Share Posted March 28, 2012 I do ride Pismo. Been going there since I was 7. Haven't ridden this Banshee there yet, but by the looks of it I'll be going the last weekend in April with an HJR motor. So, I'm done with this thread. Thanks for the tips though... Quote Link to comment Share on other sites More sharing options...
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