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this is a debate that never ends. on high compression engines you don't want to use it. you don't want to take a chance melting a hole in your pistons if the switch sticks. if it sticks on a stock motor it will just ping a little under load. the only benefit from running one it gives you a better bottom end throttle response and a little better fuel mileage which is good for a stock motor.
with your cam you don't have to worry about bottom end response since your cam doesn't even wake up till 2500rpm and if fuel mileage is a problem may you should rethink building a hot rod motor.
with my 80" evo without a voes I smoke 110 twinkies and im getting around 48mpg that's good enough for me.
Good answer! I suspected it would be a damage issue. Thanks for clarifying. I ran my evo without a voes for a while and it did have an impact on drivability, (having trouble recalling exactly what the issue was) but it wasn't horrible.
we see it different and i am correct on this -- the switch default is off NO vacuum at all < and the default is the retard mode IE off < the adjustable spring is pushing the switch to the off position, its off and with the key on its in the retard mode and that is off - i hope we agree because that is how it works
with the motor running at speed 65 MPH on a Hwy / parkway what ever - the vacuum signal at a slight opening of the throttle - the intake has a high vacuum signal ( its sucking vacuum and the engine timing is in the advance mode as the spring is overcome and its lifted it off the retard mode < the default is retard and the spring makes sure it goes to the default when no vacuum or a low vacuum is present - sporty has a different like 3.5 inches vacuum number than an ultra at 5.5 inches
even if a vacuum hose falls off it no longer can advance it then defaults to off and thats the retard mode - base timing 35 degrees only obtained when the vacuum is high at part throttle crusing - or at high engine speed /// 10 degrees is what the VOES removes from the system when does that happen ?? - when you open the throttle wide to take off or climing up a hill
now having said all of the that -- at high engine speed the volumn of air being used by the engine, and the speed that said air, that is passing the venturi in the carb creates a vacuum on the back side of the venturi, and the switch spring is over come by that vacuum and the timing is at full advance at that point and will stay untill the engine slows down and the throttle is again opened sending the VOES to default - retard --- all of this is to keep the motor from pinging
show me what i am missing in this
so are you saying that a voes failure can only result in a retarded spark, and that that couldn't cause the spark too soon, which I guess is what would cause piston damage? Do I understand this correctly?
if we had 100 OCT fuel with lead or even better what we use in the race car 116 leaded no voes would have ever been needed BUT we dont, and what we have has alky in it
here is a graph for a dyna/ultima tell me again where is the 10 degree retard is. man its like kicking a dead dog. whats sad is you have admitted you sell these in your shop and have know idea how they work or even how to program one just look at the picture and read the directions it even states do not use the voes with a modified engine unless you know how to program the ignition.
if you guys want ill give a class on how to setup and program your dyna/ultima ignitions all you need is a laptop and a usb to serial cable and a copy of curvemaker by dyna corp. if you need a copy of the program ill send it to you.
maybe you should read the link the guy posted - but then again you think that graph is gospel and you are convinced soooo COOL - what ever boats your row
in the future we can disagree BUT do not change a post i have written to what you think i ment or did not mean -- their fixed it for you -- i will need more than what you think about what i do or dont do to change my mind
in my shop and tomorrow i will take some pictures of the 2 of the three rider has one - USA national Road racing championships number ONE plates - my shop won with a buell first in 1998 and 2 in 2000 - on small tracks we found the linear power the short turns required the VOES helped ( G wizz ) we had a buy in, and as a pro team to comutrack - a unit on the bike wireless sent in and out speeds all over the track for tuning nornally 12 turns and a straight - real time changes in real time - the clock did not lie
like your credentials mean anything to me why would you even put those out there all im doing now is laughing at you. I read your post and all I got from it was my cams bigger than yours. point is don't believe me im nobody. call dyna and have them school you that's what I did I learned a lot from them.
theres more than just dip switches in that ignition like a eprom that stores how many starts how many times you hit the rev limiter and for how long 8 fully programmable curves that you can switch between not just the 4 presets and many many more goodies
PS if you want to have a battle of credentials lets do it in private msg ill be glad to play along so these fine ppl don't have to read the BS
