Oval plate cover on back side of the VE...

[BushWakr - RIP]

One of the things that we see happening to our VE pumps is the failure of the seal/oval retaining plate on the back side of our pumps. This is a cover plate and O-Ring that closes off the mechanical timing mechanism.

When a lot of advance is used as an initial timing set, and then coupled with the advance of the KSB AND the advance that happens as RPM climbs the plate/O-Ring fail and leak.



Would any of you guys be interested in a potential fix for this problem. I ask because as we push these pumps higher and higher, we see this failure more and more often, and I'm doing some digging to see if we can come up with a fix for this...



What are your thoughts on this idea???? good idea?? bad???



Bob.

 

[hdm48]

Bob,

If you say this is a problem, then by all means, let's get it cured.

Now I have to ask, what is failing, the plate itself or just the O ring?

If it is the plate, wouldn't a plate of greater strength take care of the failures? I could machine one from something like stainless steel. I am assuming the factory one is made of aluminum.

If it the O ring, couldn't you find an O ring of greater strength?

Maybe a simple reinforcing plate to cover both.



Or am I out of line here?



Dave

 

[Greenleaf]

Just Do It

Not everyone has the desire to disconnect the KSB... ... ... . not everyone desires to pull the pump to replace a sixty cent "0" ring either.



-S

 

[RGT]

Do you think pump timing... is the real culprit or is it that all these units are getting a little long in the tooth and it's just a problem from of an old hard oring. Has any one replaced this oring only to have it fail again? is it only possible to do the repair with the pump off of the motor?

 

[paccool]

If this is the same one that failed on me a few years back (before boosting power!), it is not just a "small" leak. It is a gusher. I must have pumped 2-3 gallons of fuel onto the road in just a couple of hundred yards. Left a big trail!



By all means, if you can fix this then it needs to be developed. If nothing else, then it should be added to new or rebuilt pumps when installed. Woulda saved me a tow home.

 

[jaynes]

YES!

Bob, remember that week long discussion we had about a month back about if too much advance can damage that oring? I'm defiantly interested, as this just happened to me. Whats the plan?



jaynes

 

[BushWakr - RIP]

The reason I mention it is, I can see this problem coming either for me or my brother who's "going for it".

In my travels and info hunting on some other things related to the VE, I came across a possible solution to this fuel leak/part failure.

I need to poke around a bit more but I think that I'll look closely at this myself.



I ask because I haven't kept track of how many guys have had this happen to them, so I don't know if the failure rate is worth the extra time and $$.



Let me see what I can dig up on this... .



Pastor Bob. .

 

[Scot]

One of the screws got loose on mine and allowed the o-ring to fail. Don't know if that is the normal cause of failure but aircraft safety wire would have prevented mine. Pump shop recommended blue locktite.

 

[dpuckett]

I'd be interested. My pump needs a little tweaking, I think. A little extra safety margin cant hurt. I need to replace my gasket after my wekkly timing changes of late, trying to balance low smoke and low EGT. What is the part # of that 3200RPM spring? I may need to do a search and give Danny Brickell a call.

RGT- if it is where I'm thinking of, it is IMPOSSIBLE to do this on engine. Wait, if you take off the AFC top, you MIGHT be able to get to it. Just easier to take the pump off, IMO.



Daniel

 

[nascar mark]

Timing isn't causing the o-rings to fail. Old age, loose bolts and colder weather causing the fuel to thicken slightly, coupled with the KSB kicking in causes higher than normal pressure on the o-ring in a stock or turned up VE pump.

 

[BushWakr - RIP]

Ok, Ok, keep me on my toes... .

Generally we need more fuel volume and at higher pressures to improve the atomization of the fuel cloud.

The higher pressure(s) impacts the timing in general.

The process of improving the fuel pressure and volume can pop the seal on the back.

This is what I was referring to.

I've believe I've found some other application(s) that could hold the solution to this seal problem as well as a couple other things that we may be able to use to upgrade the VE fuel pressure and volume needs for performance applications... .

Geeezzzzzz..... no mercy for the aged in here... ...



Pastor Bob... .

 

[bgilbert]

Bob, when's Mark going to 'update' his signature? Or is his new setup, temporary, and he's keeping his 1st gen block tucked away for swapping in later? Bill

 

[therabbittree]

the vw pumps have a little lever there that mechanically advances the timing a few degrees . . but above 1100rpm it is overidden etc so even if you drove around with the timing cable pulled in a stock vw ve it would only advance the timing at idle or close to it. . i wonder if you could change it some how inside to adjust the timing at higher rpms?... .

thanks

later

Deo