Accusump and chain tensioners

[LAP1DOUG]

Originally Posted by jaykay

Just thinking as whether an accusump in addition to the obvious benefits would have another less obvious one.
Would it serve to pump up the tensioners before start up,
eliminating wear and noise due to chain lash?

To the OP - I think this is a great thought, and could help chain guide life, which seems to be an issue for some.

Originally Posted by Brad Roberts

For some reason, all the other installs I have seen using the electric valve have all been on switches.. I have no idea why.. I use manual. One less electrical part to fail. Remote pull lever. Add it to the list of driver routine.

Actually there are two vesrions of the electric valve system. One is a standard solenoid that Canton warns is for start-up pre-oiling only. I don't know why, but I had guessed it must be a reduced port size valve.

The other electric valve option is supposed to charge the accusump slowly, but flow out at a higher rate. I can't imagine how / why this works.

So, I just ordered the manual valve one too, as I don't trust the solenoid operating scheme, and yes solenoids do fail. I got the big 22" long one, which fits very nicely in the tunnel above the water lines.

[JFP in PA]

Originally Posted by LAP1DOUG

Actually there are two vesrions of the electric valve system. One is a standard solenoid that Canton warns is for start-up pre-oiling only. I don't know why, but I had guessed it must be a reduced port size valve.

The other electric valve option is supposed to charge the accusump slowly, but flow out at a higher rate. I can't imagine how / why this works.

I think you may be misinterpreting their information; the EPC series only releases oil at the preset pressure ranges, it does not restrict the amount of oil released, only the pressure at which it is released.

[jaykay]

Great discussion....I was just wondering if we think the volume and pressure is enough to get to the tensioners before start up such that one can hear the difference in chain noise with or without the accusump firing. Potentially a great reason for using it off track too.....yes I have a five chain motor

[LAP1DOUG]

Originally Posted by JFP in PA

I think you may be misinterpreting their information; the EPC series only releases oil at the preset pressure ranges, it does not restrict the amount of oil released, only the pressure at which it is released.

No, I understand that from Canton's literature, the EPC valve charges the accumulator slowly, and is supposed to discharge at full flow at a pre-set pressure (assuming it had sufficient time to re-charge with that slow fill thing going on). I just don't trust this compared to a full open line to the accumulator for charge / discharge.

Originally Posted by jaykay

Great discussion....I was just wondering if we think the volume and pressure is enough to get to the tensioners before start up such that one can hear the difference in chain noise with or without the accusump firing. Potentially a great reason for using it off track too.....yes I have a five chain motor

I can't say, mine is now in shipment from Race Mart who another guy on these boards recommended. They absolutely have the best prices going on all Canton products.

[jaykay]

Originally Posted by LAP1DOUG

No, I understand that from Canton's literature, the EPC valve charges the accumulator slowly, and is supposed to discharge at full flow at a pre-set pressure (assuming it had sufficient time to re-charge with that slow fill thing going on). I just don't trust this compared to a full open line to the accumulator for charge / discharge.




I can't say, mine is now in shipment from Race Mart who another guy on these boards recommended. They absolutely have the best prices going on all Canton products.

Yes agreed on race mart...checked it myself a while ago! Let me know how your installation goes.
I am trying to imagine how the slow fill would be an advantage. I dread trying to route a control cable for a handle, in street car. Maybe it is a way of keeping oil pressure up while filling the accumulator after an event.

[jaykay]

I am starting to like the idea of a manual handle more and more. One could rev and flip the handle even while rolling through the paddok or the last straight on a cool down. This way you can let the engine idle/cool before shut down avoiding avoiding a fresh fuel charge in the cylinders if that's still an issue these days. I suppose one could piggy back the cable on the shifter cable route...hopefully without binding

Do you have a picture of your installation location location sound pretty unique! I didn't think there would be room there..

Originally Posted by LAP1DOUG

To the OP - I think this is a great thought, and could help chain guide life, which seems to be an issue for some.



Actually there are two vesrions of the electric valve system. One is a standard solenoid that Canton warns is for start-up pre-oiling only. I don't know why, but I had guessed it must be a reduced port size valve.

The other electric valve option is supposed to charge the accusump slowly, but flow out at a higher rate. I can't imagine how / why this works.

So, I just ordered the manual valve one too, as I don't trust the solenoid operating scheme, and yes solenoids do fail. I got the big 22" long one, which fits very nicely in the tunnel above the water lines.

[LAP1DOUG]

Originally Posted by jaykay

I am starting to like the idea of a manual handle more and more. One could rev and flip the handle even while rolling through the paddok or the last straight on a cool down. This way you can let the engine idle/cool before shut down avoiding avoiding a fresh fuel charge in the cylinders if that's still an issue these days. I suppose one could piggy back the cable on the shifter cable route...hopefully without binding

Do you have a picture of your installation location location sound pretty unique! I didn't think there would be room there..

I have been so busy at work, I haven't had time to finish my installation, but if you go over to Planet 9, and do a search for accusump, you can find a guy who mounted the 3 quart / 16" unit in the tunnel above the water lines. I have already test fit my 22" long unit there, and it fits fine. I just need to make some brackets and plumb it up.