Can you link me to a pic of what the pre filter vacuum guage might look like? Wade Oh Boy 33-2
On Fri, May 29, 2020, 9:10 AM Della Barba, Joe via CnC-List, < cnc-list@cnc-list.com> wrote: > FYI – it doesn’t hurt to use 2 vacuum gauges, one before the filter and > one after. I was experiencing high vacuum and shutdowns and after I > installed the second gauge, I found high vacuum on BOTH of them. It wasn’t > the filter that was clogged, it was the pickup tube in the tank. The > filter’s contribution to the problem is the difference between the gauges ;) > > My clog turned out to be rubber pieces from the fuel fill hose, it was > slowly dissolving and dropping bits of rubber into the tank. Sometimes they > would suck onto the fuel pickup and sometimes they would drop back off. > > > > *Joe Della Barba Coquina C&C 35 MK I* > > *www.dellabarba.com <http://www.dellabarba.com>* > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Wade > Glew via CnC-List > *Sent:* Friday, May 29, 2020 9:52 AM > *To:* cnc-list@cnc-list.com > *Cc:* Wade Glew <wadeg...@gmail.com> > *Subject:* [EXTERNAL] Re: Stus-List Diesel Filter > > > > thanks for this Josh > > Wade > > Oh Boy 33-2 > > > > On Sun, May 24, 2020 at 11:16 PM Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > > Wade, > > > > Look at the picture of a 500 series racor in the link below. The factory > top has a t handle which is used to tighten the lid. The vacuum gauge > which Joe linked replaces that t-handle. The t arms are not used to sense > pressure - just for tightening the lid. > > https://www.ebay.com/itm/172954061164 > > > > BTW: these 500 series are notorious for being easily over tightened which > warps the lid and causes leaks. > > > > The 500 series is 60gph which would be close to 60 times the flow capacity > required for any one of our engines. Even with a 2 micron filter I would > not expect much if any vacuum being formed, though it should be noted that > the vacuum represents the effort required to "lift" the fuel out of the > tank AND the effort required to suck the fuel through the filter. Yanmar > typically rates their engines for up to 10 feet of lift. Diesel is 34" per > psi so 10 feet = ~3.5 psi. Even with no filter element installed the > vacuum for 10 feet of vertical lift of diesel fuel would amount to 100 > inH2O, 3.5psia or 7 inHg. > > > > Josh Muckley > > S/V Sea Hawk > > 1989 C&C 37+ > > Solomons, MD > > > > > > On Sun, May 24, 2020, 23:03 Wade Glew via CnC-List <cnc-list@cnc-list.com> > wrote: > > Hi Joe > > Looking at the guage you've linked to, its obvious the "T" arms go in the > fuel line between the Racor and engine. Where does the threaded base of the > T go? What is a normal pressure? What pressure reading makes you decide to > change filters? Are the lined just clamped with small hose clamps or what? > > Wade > > Oh Boy 33-2 > > > > On Sun, May 24, 2020, 17:15 Joe Della Barba via CnC-List, < > cnc-list@cnc-list.com> wrote: > > A vacuum gauge is one of the best cost/benefit ratio improvements you can > do. You can save a lot of $$$ in unneeded filter changes and get advanced > warning when you do need to change one. > > Be official: > > > https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=racor+gauge&_sacat=0 > > Cockpit mount with light: > > https://moyermarine.com/product/vacuum-gauge-kit-gaug_07-1_532/ > <https://protect2.fireeye.com/v1/url?k=b7f37aed-ea80e98c-b7f3539a-ac1f6b44e86e-4c178e1e039dd85e&q=1&e=7cb8c88e-efc3-44b3-82bf-4503afac93d7&u=https%3A%2F%2Fmoyermarine.com%2Fproduct%2Fvacuum-gauge-kit-gaug_07-1_532%2F> > (also can be used for manifold vacuum) > > Cheap: > > > https://www.ebay.com/itm/2-1-2-Vacuum-Gauge-Chrome-Plated-Steel-Case-1-4-NPT-Lower-Mnt-30-inHg-0/183642544745?hash=item2ac1f2da69:g:2gUAAOSwJiBcQOWz > > > https://www.ebay.com/itm/LIQUID-FILLED-VACUUM-GAUGE-30-0-PSI-2-5-FACE-1-4-NPT-LOWER-MOUNT-WOG/192746480989?hash=item2ce095e55d:g:RiQAAOSwqoxcBW9S > > > > Joe Coquina C&C 35 MK I > > > > On 5/24/2020 3:39 PM, bwhitmore via CnC-List wrote: > > Time and again I have read that Yanmar does not recommend a 2/3 micron > primary filter. I therefore use a 10 micron, and use Biobar, as well as > some Seafoam. I have some old crud in my tank, but where I can see it > through the hole for the sender, the bits I can see are pretty well stuck > to the bottom of the tank (and there are not many of them). That said, the > boat had sat at the dock for +/- 6 years before I got her, and we have run > 150 gallons or so of fuel through the boat in the last 4 years. > > > > I change my Racor every year, and I used to change the one on the engine > every year as well. This time, I'm going to let the engine mounted one go > another year. We still get a fine layer of black "grit" at the bottom of > the racor over the year, but it does not appear to hinder the running of > the engine. > > > > I'd rather swap out a $20 filter once a year than risk the engine shutting > down as I go through a bridge opening with 3 kts. of current. > > > > To each their own, > > > > Bruce > > > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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