kbrott Posted March 19, 2015 Report Share Posted March 19, 2015 Ok so it goes like this, I bought a banshee advertised to me like this (cool heads, 4mm stroker, drag ported, runs alcohol with lectron carbs). What I know now is cool heads not sure of dome size, lectron carbs on alky, stock stroke and ported.(not sure how much). I detonated the piston and want to go ahead and put a 4mm stroker in it now but I'm not sure with the porting I have now if it will work and if so what all I need to do. Please help any information will be appreciated. Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted March 19, 2015 Report Share Posted March 19, 2015 #1 before you turn a wrench pressure test the motor and see if it detonated from an air leak. #2 highly unlikely those cylinders will be able to be adjusted for 4 mil crank the transf/ex timings will be through the roof on a true ss drag port Quote Link to comment Share on other sites More sharing options...
kbrott Posted March 19, 2015 Author Report Share Posted March 19, 2015 (edited) I leak down tested it and it holds I believe that I mixed the fuel wrong. Operator error How can I tell if the port would work? Edited March 19, 2015 by kbrott Quote Link to comment Share on other sites More sharing options...
JTmachining Posted March 19, 2015 Report Share Posted March 19, 2015 Send mtr to a good builder Quote Link to comment Share on other sites More sharing options...
kbrott Posted March 19, 2015 Author Report Share Posted March 19, 2015 I tried calling FAST but he's gone till next week and I'm trying to get as much figured out as possible Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted March 19, 2015 Report Share Posted March 19, 2015 Ok so it goes like this, I bought a banshee advertised to me like this (cool heads, 4mm stroker, I detonated the piston and want to go ahead and put a 4mm stroker in it Figure out what you have. Quote Link to comment Share on other sites More sharing options...
kbrott Posted March 19, 2015 Author Report Share Posted March 19, 2015 I have been trying to find some port numbers to cross reference with to see where mine falls into. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted March 19, 2015 Report Share Posted March 19, 2015 I have been trying to find some port numbers to cross reference with to see where mine falls into.Just measure your stroke Quote Link to comment Share on other sites More sharing options...
kbrott Posted March 19, 2015 Author Report Share Posted March 19, 2015 I'll go do that now, does the height of the exhaust port make a difference? Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted March 19, 2015 Report Share Posted March 19, 2015 I'll go do that now, does the height of the exhaust port make a difference?Just measure stroke first and start there. Did you figure out why it blew up? Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted March 19, 2015 Report Share Posted March 19, 2015 #1 before you turn a wrench pressure test the motor and see if it detonated from an air leak. #2 highly unlikely those cylinders will be able to be adjusted for 4 mil crank the transf/ex timings will be through the roof on a true ss drag port Check ^^^^ Do a leak down before you tear it apart Quote Link to comment Share on other sites More sharing options...
kbrott Posted March 19, 2015 Author Report Share Posted March 19, 2015 I did the leak down first thing and it held pressure so the only thing I can figure is I mixed fuel incorrectly Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted March 20, 2015 Report Share Posted March 20, 2015 How? Mixing fuel is pretty easy! Maybe fuel line gun led up from alky Quote Link to comment Share on other sites More sharing options...
kbrott Posted March 20, 2015 Author Report Share Posted March 20, 2015 That's what I wonder. This is first time with alky motor, guy I bought it from said I need to purge it after every run. Maybe I didn't do it right. Honestly I'm not sure. Only had it a couple days before it happened not sure how he maintained it Quote Link to comment Share on other sites More sharing options...
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