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#462930 - 11/12/12 3:05 pm anti sump valve
bbc Offline
BritBike Forum member

Registered: 08/20/07
Posts: 78
Loc: ohio
im looking to purchase a anti sump valve. Just wondering if someone could steer me in the right direction such as brand.
Thank You in advance!!

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#462933 - 11/12/12 3:25 pm Re: anti sump valve [Re: bbc]
AngloBike Offline
BritBike Forum member

Registered: 07/12/12
Posts: 643
Loc: UK Berks
I thought that the accepted view was that triumphs don't wet sump, unless there is some grit in the oil pump.

I'd either fix or replace it in preference to a valve, as disaster is just around the corner if you forget to switch it on

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#462967 - 11/12/12 6:39 pm Re: anti sump valve [Re: bbc]
lrutt Offline
BritBike Forum member

Registered: 06/11/07
Posts: 120
Loc: Deltona, FL
I rarely ever hear of a trumpet wet sumping. Now my Commando on the other hand.....had to drain the beast yesterday before my ride.
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#462969 - 11/12/12 6:46 pm Re: anti sump valve [Re: bbc]
Ger B Offline
BritBike Forum member

Registered: 09/23/05
Posts: 4564
Loc: Netherlands, Rotterdam area.
Quote:
if you forget to switch it on

The anti sump valve is a spring loaded one way (non return) valve.
You cannot forget it. It forgets itself. wink

But with all other reasons not to use it, I agree.
I had one on the BSA A65 though, some years ago. I have a new oil pump now and still loose some level, but not nearly as much as I used to.
The BSA pump is a gear pump, so not comparable with the Triumph.
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#462984 - 11/12/12 9:02 pm Re: anti sump valve [Re: bbc]
Excalibur Offline
BritBike Forum member

Registered: 09/15/11
Posts: 576
Loc: New Zealand
+1 for no real need for one on a Triumph twin. The stock pump has a built-in-anti-wet-sump valve which is effective enough.
As mentioned above, if you are getting wet sump, fix the built-in valve. Re-seat if/as necessary.
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#462989 - 11/12/12 9:14 pm Re: anti sump valve [Re: bbc]
triton thrasher Offline
BritBike Forum member

Registered: 08/07/01
Posts: 4605
Loc: scotland
And- if a ball valve is leaking, the pump is not working properly.
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#463029 - 11/13/12 12:51 am Re: anti sump valve [Re: bbc]
shel Offline
BritBike Forum member

Registered: 05/14/05
Posts: 2836
Loc: ohio
"triumphs don't wet sump"
They do if they're Tridents.

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#463034 - 11/13/12 1:12 am Re: anti sump valve [Re: bbc]
Pete R Online   content
BritBike Forum member

Registered: 07/07/09
Posts: 3449
Loc: Vic. Australia
There are 2 versions of wet-sumping:
1./Oil-drainage from the tank through the FEED PUMP in the normal direction which gradually floods the crankcase WHILE THE BIKE IS STORED,and not running.It may take weeks or months for the crankcase oil level to rise much.It's more likely to happen with a gear pump (Norton,BSA or Triumph Trident).It's almost unheard of in a Triumph twin with a piston pump.

It's not impossible to happen.I noticed it one time (once in more than 40 years),and more than a pint of oil had drained into the crankcase,but it took more than 6 months to happen.I can only presume that the piston was in a position where the supply ports were open,and that there was also a microscopic particle between the check ball and its seat.There was some exhaust smoke for the first few minutes when it started up.It never happened to that bike again.

I tend to agree with Dave Madigan:Although Norton/BSA riders call this "WET-SUMPING",it's not true wet-sumping;it's oil-drainage while parked for an extended time.
If a Triumph experiences wet-sumping,it's more likely to be true wet sumping,type two:

2./If the RETURN pump is at fault,it won't pump enough oil out of the crankcase,and the level rises.The crankcase oil level stays too high even when the engine is running.
That's normally caused by a slightly bigger particle between the check-ball and seat on the return pump.That particle normally found its way into the pickup tube when the crankcase drain plug was removed.

You don't need to remove the drain plug at oil change time.95% of the oil is in the oil tank.The rest is in the hoses,pump,crankshaft and crankcase.You can pump that "rest" of the oil out the return hose when you start up.Just disconnect the hose at the tank end and run it into a bucket for the 30 seconds.Then re-connect the hose to the tank.

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#463069 - 11/13/12 6:40 am Re: anti sump valve [Re: bbc]
triton thrasher Offline
BritBike Forum member

Registered: 08/07/01
Posts: 4605
Loc: scotland
Of course, we don't actually know if Mr BBC has any kind of oil problem.
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#463092 - 11/13/12 2:19 pm Re: anti sump valve [Re: triton thrasher]
bbc Offline
BritBike Forum member

Registered: 08/20/07
Posts: 78
Loc: ohio
Hello,
I have made a mistake. I am purchaseing this for a Norton Commando. Guess I'm in the wrong Forum.
Thanks for your imput.

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