WRT to the check valve I thought the point of it was when you open the
accusump for pre-oiling it forces the oil towards the engine and not
back into the oil cooler & filter. Which could push junk in the filter
backwards?
A.
On 8 September 2010 12:03, Norlin Engineering
<norlinengineering@comcast.net> wrote:
> Concur regarding the positive displacement pump acting as a fairly
effective
> check valve. I do not have a check valve in my system and precharging to
> 35-40 psi off of the 1 1/2 qt accumulator is no problem. The only thing
the
> check valve would improve on in my opinion is if you have a leak from a
> hose, cooler, oil filter, etc or if the pupm drive breaks. A 25psi idiot
> light is the only thing that may help then.
>
> -----Original Message-----
> From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
> Behalf Of Randall
> Sent: Tuesday, September 07, 2010 11:08 AM
> Cc: fot@autox.team.net
> Subject: Re: [Fot] Accusump
>
>
>> without the check valve, some of the charge is going to want to back
>> up through the pump, so it is reducing the effectiveness of the
>> thing...
>
> But the pump is positive displacement, right? So oil can only go backwards
> through it by leaking through the clearances, which hopefully are fairly
> small?
>
> Plus, it's going to be running at the time, so any oil that leaks back into
> the intake will likely get sucked through the pump and stuffed back into
the
> galleries?
>
> This is outside my experience, so I'm just asking questions. But I still
> don't understand the need for the check valve, and since it was brought up
> ...
>
> -- Randall
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--
Andre Rousseau - andre@gt6.ca
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'68 Triumph GT6 MK1 - http://www.gt6.ca/
#515 FIAT 124 Spider - http://www.124racer.com/
Ottawa, ON, Canada
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