Not much as it happens, the VOES is very reliable...I have never found a faulty one and you can run an Evo with it disconnected and either earthed or not earthed depending on which advance curve you want.

It isn't a destructive failure, more of a nuiscance.....lets not go scaring people just so they go and buy parts that we like.

With a bike that old that has been stored inside I would just change the oil and inspect the rubbers....most of those rubber parts last way longer than 8 years on a bike that gets ridden everyday so being stored isn't the big panic that many people make it out to be.

 

Thanks. I had all the fluids replaced yesterday. I went with HD Primary fluid for the Primary, but may give ATF a go next time, as finding neutral is not that easy. No big deal tho I am still very happy so far.

Have also changed one of the lines, and tyres still seem ok

 

Saw an engine last week that was ran for some time with a leaking VOES, It had melted pistons tops. Engine needed extensive head, piston, cylinder work. So Booo. As I was stating , the Dyna S is superior to stock VOES not to mention the preformance gain. Just trying to point out what might be causing poor preformance from a bike that has been sitting and could have dry rot leaking Voes.

 

I'll back up Spanners on this one, VOES is not junk, whatever you say or think! There are aftermarket ignition modules that use it and my bike was was fine with it, from new bone stock through various states of tune, for donkey's years.

 

Everyone is entitled to their opinions, that is what makes this forum great. That being said, if the engine melted the tops of the pistons there was more going on there then the leaking VOES. either it was running way lean or was over advanced and the rider should have heard something. Neither of these conditions would be caused by a leaking VOES. I've seen VOES's with the hose off from a carb backfire and the guy ran it for quite a while before he finally brought it in and there was no damage. Spanners what do you think??? It sounds like the tune was a little off.
John

 

Really? Please explain the mechanics supporting your premise.

 

Do ya mind sharing your thoughts on what a decent squish tolerance is an an EVO BT? On my XLs - I usually shoot for about .0035"

 

Sounds like a vacuum leak that caused the engine to run lean, coupled with an inattentive owner who didn't recognize the symptoms. Don't mean to be argumentative - but, it sounds like your information is about 20 years outta date, analagous to the guys in the bar who tell you that your HD won't run right until you put an S&S carb and drag pipes on it.

 

Quote:

Originally Posted by 1984_FXRT

Sounds like a vacuum leak that caused the engine to run lean, coupled with an inattentive owner who didn't recognize the symptoms.

Sounds like your agreeing with me as stated in red. I saw this Evo engine last week and this info was described to me through my Indy who has been building racing engines 30 yrs. The pistons were melted also the heads were damaged, saw the damage myself. The point of this was the OP said he had no power so the VOES would be a good place to look since the bike could have dry rott. By the way, your bike WONT run right without SS carb. My point is there are better set ups than VOES that can have problems. OP bike is a 97 which makes it 17 yrs old with orig equipment, Strong case for VOES leaks.

 

The point is that it was a VACUUM LEAK that went undetected for a significant period of time that caused the meltdown, not the presence of a VOES. You could experience (and are more likely to, in my experience) similar failures from a bad intake seal. To suggest that the VOES itself was responsible for the failure isn't supported by your accounting of the situation.