VOES or no VOES
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
Thread Starter
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Cruiser
Joined: Dec 2013
Posts: 159
Likes: 0
From: New Orleans
Shex is that cam and compression stock for that motor ? Iv'e been thinking about the next time I have mine apart that I might put in a smaller cam and lower the compression. I want to set it up more for torque , touring and road trips.
Club Member
Joined: Apr 2011
Posts: 5,816
Likes: 7,847
From: SE Louisiana
Evan, it's stock from S&S except for the ignition, the 111 is somewhat detuned compared to what it could be, meant to be smooth for touring, but has plenty enough power for me.
The reason I said it might ping a little on low end is the canned maps might have too much timing for a high compression engine on the high curve, for the low curve it runs best on, if that makes sense to you, I know what I mean anyway, lol.
The reason I said it might ping a little on low end is the canned maps might have too much timing for a high compression engine on the high curve, for the low curve it runs best on, if that makes sense to you, I know what I mean anyway, lol.
Road Master
Joined: Feb 2014
Posts: 913
Likes: 5
From: indiana
Look guys, this is simple. The VOES retards the timing under load/low vacuum preventing pinging/detonation. When the vacuum returns the timing advances. with todays fuel, you really want the VOES. As most of you know I run Ultima gear and I use a VOES !! You've seen my dyno sheets and the engine is not lacking in torque or HP. Why take a chance on damaging your engine??? We even started putting them on the high compression shovels we built. VOES does not make your engine ping unless it isn't working or set way too low. If you adjust it you need to reseal the adjustment screw recess or it may not work as intended. If it didn't work Harley would not have put it on millions of bike, they could have saved a boatload of money. It is not like the smog equipment on your car engines. Just my two cents worth !!
John
John
this has been talked about many many times the voes switch does not retard your ign it advances it when the bike is not under a load the voes switch is closed and the timing curve is maxed out at 35o when you open the throttle the voes switch opens and it goes back to the default curve.
Road Master
Joined: Feb 2014
Posts: 913
Likes: 5
From: indiana
but its not retarded there is no retard feature you have the stock Harley curve then you have the advance curve and it depend on the rpm stock curve is maxed out at around 3800 rpm at 35o and the advanve curve is maxed out at 1500 rpm at 35o so at 3800 rpm and above the voes does nothing if the voes switch fails or the vacuum line is broke it uses the stock curve and the only thing that you will notice is a lower idle and off idle throttle response will be a little sluggish but most ppl cant tell the difference if you unplug your voes and your bike runs like crap you have other problems
if you have monster compression or monster cubes. and your using a voes or a stock ignition your just asking for detonation problems.
my chop is 82" no voes pushing over 100 hp and I get 52 mpg and no spark knock so whats my gain by using one.
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Your chop is light, so less load, you can and obviously do get along without one. However many of the people here ride larger bike and two up, that's when the VOES helps. I have a 120" with 10.5 to 1 compression in my bagger. I use a re-adjusted VOES (set at 6.5) and have no problems at all !
John
John
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Seasoned HDF Member
Joined: Sep 2012
Posts: 6,570
Likes: 590
From: almost there
I have 10-1 and 200 psi cc.. Tried everything under the sun to get it not to ping dn low.
ONLY fix was removing the VOES. NOW, Runs like a rocket and no ping. Dynamic Timing set 35* and Ultima ignition on 3rd curve. GO FIGURE.
VOES I removed was a 6lb. Bike is a 97 WG and is TOO quick out the hole.
ONLY fix was removing the VOES. NOW, Runs like a rocket and no ping. Dynamic Timing set 35* and Ultima ignition on 3rd curve. GO FIGURE.
VOES I removed was a 6lb. Bike is a 97 WG and is TOO quick out the hole.
Last edited by aces&8s; Oct 9, 2014 at 08:47 PM.
Stellar HDF Member
Joined: May 2009
Posts: 2,856
Likes: 127
From: Middle of Kansas
If you have no port on your ignition module to plug the VOES into, it ain't going to work. I have a switch on mine so I can turn it off and keep the module in the retarded mode. It's pretty sluggish there but at idle makes a great slow potato potato. Freaks out the Twin Cam guys with EFI.