Just checked my past Amazon purchases. Looks like metal to me. Probably bronze.
Globe Marine Run-Dry® Model 418 Impeller Replaces Jabsco 22799-0001, Ancor J050016, CEF 500129, Vetus IMP 00101, Yanmar 124223-42090 https://www.amazon.com/dp/B00C9LS2QM/ref=cm_sw_r_cp_apa_i_rZ45AbEXMY51P Josh On Mon, Apr 30, 2018, 5:36 PM Josh Muckley <[email protected]> wrote: > I'll check when I get home regarding my boat's pump but the impeller for > the industrial pump at work has a metal sleeve. I can't say for sure that > there is NO plastic, but at least the shaft interface is not. > > Josh > > On Mon, Apr 30, 2018, 5:18 PM Jim Reinardy via CnC-List < > [email protected]> wrote: > >> Perhaps they have changed the design, but the Globe impellers I used for >> a while on my old Atomic 4 equipped Catalina had a plastic inner ring with >> a keyway that the shaft went into. That boat was raw water cooled in Lake >> Michigan, so no heat issues in that pump. The plastic ring cracked in less >> than a season of use. The shaft started spinning inside it and water flow >> stopped. I spotted the lack of water exhaust before any real damage got >> done, but I would need to know they are using metal inner rings before I >> would consider them again. >> >> Jim Reinardy >> C&C 30-2 "Firewater" >> Milwaukee, WI >> >> >> --------- Original Message --------- >> >> Subject: Re: Stus-List Fresh Water Conversion Yanmar 3HM >> >> From: "Josh Muckley via CnC-List" <[email protected]> >> Date: 4/30/18 1:56 pm >> To: "C&C List" <[email protected]> >> Cc: "Josh Muckley" <[email protected]> >> >> I have a Globe Impeller in my boat and have started using them at work >> too. They definitely seem to live up to their claims. At work we would >> routinely destroy even brand new rubber impellers since they would sit for >> months and be allowed to dry out. Similarly I have gone 4 years between >> changes on my boat's impeller. I didn't have to replace it when I did but >> rather chose to and then later discovered some cracks on the vanes. >> >> I also run a SpeedSeal Life which I'm sure helps. >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> Solomons, MD >> >> >> On Mon, Apr 30, 2018, 4:28 PM Bill Coleman via CnC-List < >> [email protected]> wrote: >> >>> What about those Blue Globe Impellers? They seem much better that the >>> neoprene style of old, and seem to be a silicone blend, or something. They >>> seem to hold up much better, and they also have a hardier Red Impeller, >>> which I believe is intended for Diesel, and I think Higher Temps. >>> >>> >>> >>> Bill Coleman >>> >>> C&C 39 Erie >>> >>> >>> >>> *From:* CnC-List [mailto:[email protected]] *On Behalf Of *Chuck >>> Gilchrest via CnC-List >>> *Sent:* Monday, April 30, 2018 3:56 PM >>> *To:* [email protected] >>> *Cc:* Chuck Gilchrest >>> *Subject:* Re: Stus-List Fresh Water Conversion Yanmar 3HM >>> >>> >>> >>> Fred, >>> >>> Mine was Jabsco as well. My engine tech said he’s concerned that a >>> Jabsco rubber impeller wouldn’t be up to the task of the heat in a >>> circulation pump. Any thoughts there? I suspect it would need to be >>> checked often just like the raw pump impeller. Maybe I just need to >>> inspect the Sendure exchanger for any blockages, change impeller and get >>> the boat in the water. >>> >>> Chuck Gilchrest >>> >>> Half Magic >>> >>> 83 35 LF >>> >>> Padanaram MA >>> >>> Sent from my iPhone >>> >>> >>> On Apr 30, 2018, at 3:04 PM, Frederick G Street via CnC-List < >>> [email protected]> wrote: >>> >>> Chuck — my 1979 Landfall 38 (Middletown-built) appears to have come with >>> a factory-installed Sen-Dure heat-exchanger and added circulation pump (a >>> Jabsco, which I have since replaced with another Jabsco, rather than try to >>> rebuild). I also have the challenges of no access (V-drive). >>> >>> >>> >>> — Fred >>> >>> >>> Fred Street -- Minneapolis >>> S/V *Oceanis* (1979 C&C Landfall 38) -- on the hard in Bayfield, >>> WI :^( >>> >>> >>> On Apr 30, 2018, at 1:39 PM, Chuck Gilchrest via CnC-List < >>> [email protected]> wrote: >>> >>> >>> >>> Silly me. Since I bought my 1983 Landfall 35 a bit over 2 years ago, I >>> had been under the assumption since there was an “expansion tank” on the >>> engine that had coolant in it, that it was a fresh water cooled engine from >>> the factory. It is a Yanmar 3HM 30. No (F) on the engine tag. I had >>> never even bothered to look.. Yeah, the heat exchanger looked a bit >>> different from the one in the Yanmar manual, but since I’d been having a >>> marina commission and decommission my engine each year, changing water pump >>> impellers as necessary (“go ahead and do it”), I thought all was OK. I >>> even had a raw water pump changed out when the old one was demolished due >>> to the “cam” screw backing out and galling the inside of the pump. Turns >>> out there’s more going on. >>> >>> >>> >>> Low and behold, this year, when the mechanic looked around the engine, >>> he mentioned that it was the first time he’d ever seen a small diesel with >>> not one but two raw water pumps. As it turns out, the engine appears to >>> have had a fresh water conversion which was made by Sen-Dure, (thus the >>> Sen-Dure expansion tank/heat exchanger) and a second external pump running >>> off a belt. So one of the two coolant pumps is actually a circulation pump >>> (the one down low on the engine) and the other is a raw water pump..the one >>> we replaced last year. >>> >>> >>> >>> Has anyone ever heard of C&C converting engines from Raw to Fresh at the >>> factory (Barry Carroll, Middletown RI built boat), or is it more likely an >>> owner conversion? My mechanic says that the rubber impeller on a raw water >>> pump will never hold up to the heat of the interior engine coolant and will >>> always burn up impellers prematurely if I keep things as they are. At one >>> point Yanmar made a fresh water conversion kit for 3HM engines, but very >>> unlikely there would be any availability considering the motor hasn’t been >>> built since 1983. >>> >>> This engine is somewhat dastardly in that it is installed backwards with >>> a V-Drive, making access to the “front” of the motor a really tough job. >>> >>> Right now, I’m at a crossroads which involves: >>> >>> 1. Finding a suitable circulation pump that is up to the job for the >>> existing system, since I just de-scaled the heat exhchanger and bought a >>> new stainless mixing elbow >>> 2. Finding the needed parts to do a Yanmar factory Fresh water >>> conversion >>> 3. Keep the boat out of the water this year and save up to re-power. >>> Lavishing multiple thousands at a 36 year old diesel may not be the best >>> way to spend money. >>> >>> Any suggestions would be welcome.. >>> >>> Chuck Gilchrest >>> >>> S/V Half Magic >>> >>> 1983 Landfall 35 >>> >>> Padanaram, MA >>> >>> >>> >>> >>> >>> _______________________________________________ >>> >>> 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 >> >> _______________________________________________ >> >> 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
