New Racor / new lines
I just rebuilt the fuel supply system to our '88 M25 XP. After the original Racor R24S developed an air leak on our vacation, we bypassed it to get us home, leaving all the filtering to the spin-on Universal filter on its bracket. On our engine that bracket is mounted on the rear side of the injection pump with a couple of bolts, starboard side of engine.
Since the R24S is out of production, it seemed better to replace it than try and fix it. The leak, as far as we trouble shot it, is in the hand pump on top of the housing, and we have no use for that pump anyway because of our electric lift pump.
I now have a new Racor 230 model with a 2 micron element. The whole filter is about an inch taller than the old one, but tolerably fits in the same place.
Our mechanic advised me to replace the original-equipment copper supply line -- quarter inch -- which looked like it was pulled through the bilge and under some interior moldings by an excited person...
It was visibly corroded and looked bad to me -- part of the trouble shooting when on vacation involved blowing air back through that long piece of tubing to check for clogging and finding only our old Zodiac dinghy pump had the umph to do this! Our mechanic buddy explained that old tubling gets crudded up inside kinda-sorta like arteries in us...
Jolly thought, that one. Wonder what my heart "tubing" looks like inside?
Interesting enough, the original return line was heavily-reinforced hose, with more layers and wall thickness than the new stuff I bought. Go figure.
I ended up re-rerouting both lines, away from the bilge... and pioneered a new route around some interior cabinets and moldings... Like a Viking exploring new lands, only with a 7/8 hole saw instead of a sword and spear...
Pricing: We$t Marine wanted around $2.60/foot for diesel-rated hose; the local Universal dealer wanted 2.10, and a local industrial hose supplier wanted $1.62. It took just under 40 feet total for both lines. BTW, there is more printing regarding all sorts of specs on this "diesel wonder hose" than you can read in ten minutes!
:nerd:
I got the new Racor installed Friday with all connections and all the old hose/copper extracted in pieces. We took the boat on a 20 mile cruising race yesterday and motored home today. No leaks so far.
The original Facet electric pump is still there and working fine, but is quite corroded on the outside. I am not sure if the internal screen filter could even be accessed without harming the pump.
My thinking is to look into replacing it this fall and refurbish the current one to keep as a spare (?).
FWIW, it took two tries of running the lift pump until I thought I heard fuel splashing inside the tank before the engine would stay lit. Having everything in the system "dry" really intensifies the fuel bleeding process!
Loren in PDX
Olson 34 #8