BANSHEE HP Posted July 16, 2015 Author Report Share Posted July 16, 2015 Its threaded just counter sunk. The front studs on stock and cub cylinders are like that. The studs that we include with the cylinder are 8 shorts and 2 longer(10 stock head studs) for the front studs. Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted July 16, 2015 Report Share Posted July 16, 2015 Ahhh, you mean counter-bored. Quote Link to comment Share on other sites More sharing options...
dave5.0 Posted July 16, 2015 Report Share Posted July 16, 2015 So where they at compared to the competition? Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 16, 2015 Author Report Share Posted July 16, 2015 Only time will tell... Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted July 16, 2015 Report Share Posted July 16, 2015 Dyno numbers would help sell these so we can see where these stack up against the competition. I like the design intent of Driveline's Pistons. Any real world proof of gains, or are they negligible and the better window size and placement helps with wrist pin lubrication? What are the advantages of these cylinders over stock other than them being 68mm bores and the various stroke options? The intake ports look rather large. What would their size and shape be equal to in a stk cyl port? Looks like there's plenty of material in the transfer areas to reshape and is probably where the real power will be made. I'd be willing to buy a 4mil set-up right now if a dyno plot showed me what I wanted out of a 421. Quote Link to comment Share on other sites More sharing options...
hercalmighty Posted July 16, 2015 Report Share Posted July 16, 2015 You guys did some testing with these right? If so, you guys should ha e some dyno numbers Sent from my VS980 4G using Tapatalk Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 16, 2015 Author Report Share Posted July 16, 2015 Dyno numbers would help sell these so we can see where these stack up against the competition. I like the design intent of Driveline's Pistons. Any real world proof of gains, or are they negligible and the better window size and placement helps with wrist pin lubrication? What are the advantages of these cylinders over stock other than them being 68mm bores and the various stroke options? The intake ports look rather large. What would their size and shape be equal to in a stk cyl port? Looks like there's plenty of material in the transfer areas to reshape and is probably where the real power will be made. I'd be willing to buy a 4mil set-up right now if a dyno plot showed me what I wanted out of a 421. You guys did some testing with these right? If so, you guys should ha e some dyno numbers Sent from my VS980 4G using Tapatalk Honestly we havent been able to test theses as much as we wanted too. Because someone on facebook decided to post up a prototype without our permission and tell everyone incorrect facts about them. If we had been able to go about this the way we'd planned, the first production run would be done sitting on the shelf with dyno numbers. . But weve had proto types of these for years. With that said we've had 2 different 465 10mm versions of these make 96-98hp on pump gas. Recently a 4mm set with port timing higher than a serval but less than a cub made 78hp with 36pwks and cpi inframes and 81hp with shearer sb inframes. Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 16, 2015 Author Report Share Posted July 16, 2015 The "raw" version on these cylinders un-plated will also be available in 54-64mm strokes with a 68mm bore for the time being, 66mm bore will be worked in over time. $375 for a set of un-plated cylinders, includes head studs, water jacket plugs and locating dowels. Some pictures of what they look like before the go into the cnc and what comes out as a finished product. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted July 16, 2015 Report Share Posted July 16, 2015 Cuz fuck Niche and Athena! These should fill in all the blanks that the competition forgot. You guys are doing great stuff at driveline. Only question, any material added at the base of the transfers where they get crazy thin after porting? Photos look like there is a touch more meat. 1 Quote Link to comment Share on other sites More sharing options...
bigweav81 Posted July 16, 2015 Report Share Posted July 16, 2015 What is the standard port timing on these cylinders? sent from yo mammy house Quote Link to comment Share on other sites More sharing options...
Nightmare Posted July 16, 2015 Report Share Posted July 16, 2015 Ron is MIA now lol. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted July 17, 2015 Report Share Posted July 17, 2015 Has a outside builder had these in there hands yet? If I can get a pre cast 7 mil with a conservative port and then be brought to my needs/style I'd be all for it. There will be a lot more fast bikes out there. Also do you have a name for these cylinders? Like cub serval eliminator? 1 Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted July 17, 2015 Report Share Posted July 17, 2015 IPS! Hehe.... Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 18, 2015 Author Report Share Posted July 18, 2015 Has a outside builder had these in there hands yet? If I can get a pre cast 7 mil with a conservative port and then be brought to my needs/style I'd be all for it. There will be a lot more fast bikes out there. Also do you have a name for these cylinders? Like cub serval eliminator? We've got a name or 2 in mind that they will be, again bit of rush release on them but they wont be a kitty cat name. I cut two 7mm today, guess we'll do a few more. Lanes 7mm will be going on the dyno next week, you can about drink the air around here lately. I expect by this time next week we'll have(2) stock stroke,(4)+4 low porting timing,(2) 4mm high port timing,(4) 7mm which will be low and (?)10mm low ready to be sold un-plated. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted July 18, 2015 Report Share Posted July 18, 2015 Boost (boysen) ports? Room to make them? Any second hand info? Quote Link to comment Share on other sites More sharing options...
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