JUSTWANNARACE Posted March 30, 2017 Report Share Posted March 30, 2017 (edited) Can't really go bigger than than 72mm stroke in stock cases. Anything bigger than that you should use a big wheel crank. Is doing a 72mm stroke in stock cases a good idea? Not for the average guy imo alot of flex unless you cast plugs and weld them in but you mess up one set and have to do another (with the cost) you miswell buy billet..jmo can you do a 78mm stroke in stock cases, yes, is it practical.. no again jmo Edited March 30, 2017 by JUSTWANNARACE Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted March 30, 2017 Report Share Posted March 30, 2017 Can't really go bigger than than 72mm stroke in stock cases. Anything bigger than that you should use a big wheel crank. Is doing a 72mm stroke in stock cases a good idea? Not for the average guy imo alot of flex unless you cast plugs and weld them in but you mess up one set and have to do another (with the cost) you miswell buy billet..jmo can you do a 78mm stroke in stock cases, yes, is it practical.. no again jmoYou don't know shit Quote Link to comment Share on other sites More sharing options...
registered user Posted March 30, 2017 Report Share Posted March 30, 2017 justwannarace has a valid point. whats mechanically feasible and whats a good idea are two different things. some folks have a hard time differentiating between them. I cringe everytime I see someone ask for help on some bigbore stockers. feasible :yes. good idea: fuk no Quote Link to comment Share on other sites More sharing options...
RagunCajun Posted March 30, 2017 Author Report Share Posted March 30, 2017 If someone would like to add more detail to that, ill gladly add what's usually seen in bigger than 72 bore in stock cases. What people do and how common is failure. And what commonly fails. I would assume if you do such a cylinder(s) with that big of a bore, you would go to a builder who knows what to do and not to do. But this thread is for entertainment purposes so all info is welcome. I will try to keep first 1st post as proven facts. I just learned today the 72mm cylinders can come in big or small flange. That's exhaust but i think it's worthy of noting. I just dont know enough about that subject. If anyone has anything to add, please dont be afraid to post. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted March 30, 2017 Report Share Posted March 30, 2017 Vitos also had a Billit mono before their big stealth cylinders I see Pro X under ESR, but am not seeing anything listed from LA Sleeve. They did a PV and non PV mono jug from 68-72mm. I believe they were available in 4, 7, 10, 12, & 14 mil strokes. Dasa Motor for banshee was the T Rex. Rotax PV with bore from 66-72+mm. Available in multitude of strokes as well. You were correct showing that Twister at one point had an involvement in the T Rex stuff. Pretty sure he was just buying them and configuring them how he wanted them. You have a PWC motor listed. Also, there was the PSI motors. They were PV cylinders as well, although I'm pretty sure that was a re branded cheetah as well. Quote Link to comment Share on other sites More sharing options...
JTmachining Posted March 30, 2017 Report Share Posted March 30, 2017 U forgot the TSS with blank info Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted March 30, 2017 Report Share Posted March 30, 2017 ^lol Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted March 30, 2017 Report Share Posted March 30, 2017 U forgot the TSS with blank infoAren't they casting it in unobtanium these days? Quote Link to comment Share on other sites More sharing options...
JTmachining Posted March 30, 2017 Report Share Posted March 30, 2017 Aren't they casting it in unobtanium these days?Shhh Quote Link to comment Share on other sites More sharing options...
J-Madd Posted March 30, 2017 Report Share Posted March 30, 2017 U forgot the TSS with blank infoGiven the context of this thread I can't tell if you mean Two Stroke Shop, or just plain ole TSS. Quote Link to comment Share on other sites More sharing options...
JTmachining Posted March 30, 2017 Report Share Posted March 30, 2017 Given the context of this thread I can't tell if you mean Two Stroke Shop, or just plain ole TSS.TSS Quote Link to comment Share on other sites More sharing options...
RagunCajun Posted March 30, 2017 Author Report Share Posted March 30, 2017 Aren't they casting it in unobtanium these days? quoted before deleted. unobtaint-ium monoblock cylinders noted in R&D. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted March 30, 2017 Report Share Posted March 30, 2017 Haha Quote Link to comment Share on other sites More sharing options...
JUSTWANNARACE Posted March 30, 2017 Report Share Posted March 30, 2017 (edited) You don't know shit You don't know shit I may have "no clues" but, your still a CS. Do you ever have any USEFUL information? Edited March 30, 2017 by JUSTWANNARACE Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted March 30, 2017 Report Share Posted March 30, 2017 If someone would like to add more detail to that, ill gladly add what's usually seen in bigger than 72 bore in stock cases. What people do and how common is failure. And what commonly fails. I would assume if you do such a cylinder(s) with that big of a bore, you would go to a builder who knows what to do and not to do. But this thread is for entertainment purposes so all info is welcome. I will try to keep first 1st post as proven facts. I just learned today the 72mm cylinders can come in big or small flange. That's exhaust but i think it's worthy of noting. I just dont know enough about that subject. If anyone has anything to add, please dont be afraid to post. my DM is in stock cases Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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