zach15 Posted May 17, 2012 Report Share Posted May 17, 2012 Right now I have a 68mm bore stock stroke cub some time I'm wanting to go to a stroker but i don't want to have to get different cylinders or have my cub ported and re-plated. So I was wondering what size stroke you use blaster pistons with? A blaster piston is 5mm shorter so would you want a 10 mil stroke so you have 5mm more at tdc? I know people run blaster pistons with 115mm rods but with what i have read about that is that you only gain like 20-30cc or something like that? correct me if im wrong. I know I don't know every thing about every thing so i might just be making my self sound stupid by posting this but i figured why not try. 1 Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted May 17, 2012 Report Share Posted May 17, 2012 no way no how. you need a new cylinder/crank/piston/domes Quote Link to comment Share on other sites More sharing options...
banshee760 Posted May 17, 2012 Report Share Posted May 17, 2012 Like banshee hp says if you go to a stroker the port timings change and un a cub to change them its a different deal ( im not saying its not possible)but you would have to get custom domes ;ahi blastee pistons ;timing ports re plated amongs other so it would just be easier to sell what u have and get another Quote Link to comment Share on other sites More sharing options...
zach15 Posted May 17, 2012 Author Report Share Posted May 17, 2012 no way no how. you need a new cylinder/crank/piston/domes well I figured i would have to get a different crank...I have a set of 68mm blaster pistons that are just setting around and i have 22cc baster angle dooms and if they wouldn't work i have a lethe so i can make them any cc or any angle. so I guess im just going to put 115mm rods with blaster pistons and see how that works. Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted May 18, 2012 Report Share Posted May 18, 2012 well I figured i would have to get a different crank...I have a set of 68mm blaster pistons that are just setting around and i have 22cc baster angle dooms and if they wouldn't work i have a lethe so i can make them any cc or any angle. so I guess im just going to put 115mm rods with blaster pistons and see how that works. what the hell are you talking about? so youve got a stock stroke crank and a stock stroke cub cylinder and you want to go to a 4mm 115rod crank, use blaster pistons and run or cut 22cc domes. adding the 4mm crank pushes the piston up 2mm more then stock, then add another 5mm for the 115 rod, so your piston is going up 7mm higher then before, add in the blaster piston that has a 6mm higher pin height, so know your piston is only 1mm higher then with your stock setup... sounds like you could just cut the dome a lil deeper and eveything will line up and be good to go right?...... sure but all your port timings are going to be way off. bottom line is you need to get a new cylinder and crank, then use your blaster pistons and 22cc domes. Quote Link to comment Share on other sites More sharing options...
vulvafan537240 Posted May 18, 2012 Report Share Posted May 18, 2012 keep the setup youve got or sell it and buy a 4 mill cub. dont try to fit a 4 mill crank in there with blasty pistons and custom domes for a stock stroke cub. i doubt youll be happy with the results. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted May 18, 2012 Report Share Posted May 18, 2012 well I figured i would have to get a different crank...I have a set of 68mm blaster pistons that are just setting around and i have 22cc baster angle dooms and if they wouldn't work i have a lethe so i can make them any cc or any angle. so I guess im just going to put 115mm rods with blaster pistons and see how that works. A set of pistons are half the price of a crank. Are you that worried about using a set of pistons that have been sitting around how long? Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted May 22, 2012 Report Share Posted May 22, 2012 what the hell are you talking about? so youve got a stock stroke crank and a stock stroke cub cylinder and you want to go to a 4mm 115rod crank, use blaster pistons and run or cut 22cc domes. adding the 4mm crank pushes the piston up 2mm more then stock, then add another 5mm for the 115 rod, so your piston is going up 7mm higher then before, add in the blaster piston that has a 6mm higher pin height, so know your piston is only 1mm higher then with your stock setup... sounds like you could just cut the dome a lil deeper and eveything will line up and be good to go right?...... sure but all your port timings are going to be way off. bottom line is you need to get a new cylinder and crank, then use your blaster pistons and 22cc domes. Blaster pistons have the wristpin moved 5mm higher up towards the crown edge, so it makes the piston sit lower, to make up for the 5mm added to the rod length. You only have to take in account then the 2mm additional stroke up and down. Follow me? Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted May 25, 2012 Report Share Posted May 25, 2012 Blaster pistons have the wristpin moved 5mm higher up towards the crown edge, so it makes the piston sit lower, to make up for the 5mm added to the rod length. You only have to take in account then the 2mm additional stroke up and down. Follow me? i follow you but... a blaster piston is 6mm higher offset from a banshee piston. 5mm of rod + 2mm off up stroke - 6mm of piston= 1mm that needs to be made up in gaskets or domes. now follow me Quote Link to comment Share on other sites More sharing options...
guns4children Posted May 25, 2012 Report Share Posted May 25, 2012 To much math on here Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted May 25, 2012 Report Share Posted May 25, 2012 Blaster pistons have the wristpin moved 5mm from a banshee piston, not 6mm. Also, blaster pistons are used in big bore long rod builds. It doesn't matter the stroke really, just if the crank is a long rod. Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted May 25, 2012 Report Share Posted May 25, 2012 Blaster pistons have the wristpin moved 5mm from a banshee piston, not 6mm. Also, blaster pistons are used in big bore long rod builds. It doesn't matter the stroke really, just if the crank is a long rod. You sir are incorrect. A wiseco 795 series piston is 5mm offset in 64-66.25mm. A wiseco 573 blaster piston is 6mm offset 66-68.25mm. Look it up Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted May 27, 2012 Report Share Posted May 27, 2012 You are correct. I just measured a stock 66mm blaster piston, a 795 series 64.5mm banshee piston, and a 64mm stock banshee piston and yep, the blaster piston is 6mm pin offset and 5mm offset for 795 series. Quote Link to comment Share on other sites More sharing options...
vulvafan537240 Posted May 28, 2012 Report Share Posted May 28, 2012 Never new that Quote Link to comment Share on other sites More sharing options...
Canada Posted November 13, 2018 Report Share Posted November 13, 2018 Sorry to bump this old thread, but i got the same problem with my 409 la sleeve, aka CT 409 monoblock Big bore 68mm but short rod, seeing as the blaster 573 wont work being 6mm lower. Are there any pistons as I was qoated over 300 for just the pistons from la sleeve Quote Link to comment Share on other sites More sharing options...
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