SMX 1730 will it fit without engine lift?

This topic has 3 replies, 4 voices, and was last updated 4 years ago by Rob Schepis.

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November 3, 2019 at 10:39 am #80397

Paul Lagasse
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Vessel Name: She's Hooked
Engines: Cummins 6BTA 370 HP x 2
Location: Hampton NH
Country: USA

I am about to do winter upgrades on both my engines (6BTA 370HP) — I read the post that removing the old Sherwoods will require a slight lift of the engine. Assuming I use the new SeaBoards as replacements will I in the future have to lift the engine or will the SMX1730 slide right in?
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November 6, 2019 at 6:12 pm #80934

Rob Schepis
Forum Moderator
Vessel Name: Tenacious
Engines: 6BTA 5.9 330's - "Seaboard Style"
Location: Long Island, NY
Country: USA

I was able to do a little grinding of the mount under the pump and the SMX pump goes off/on without any issue.

November 3, 2019 at 8:17 pm #80432

Roger Franklin Williams
Participant
Vessel Name: Sunlizard
Engines: Cummins 5.9B
Location: Louisville
Country: United States

SMX 1730 will it fit without engine lift

I do have SBM 1730 pumps. I have changed impellers many times on my pair of 6BTA’s. I get as much of the fuel cooler plumbing out of the way as possible and wire tie it. P Eng easy. S Eng I either jack up 3/8 to 1/2″ and remove the pump or I have changed without pump removal it’s very tricky and each time I swear and cuss never again. The SBM 1/2″ kit is the way to go.

November 3, 2019 at 2:14 pm #80413

Tony Athens
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Vessel Name: Local Banks
Engines: QSB 6.7 550 HP
Location: Oxnard, CA
Country: USA

Paul,

The way the factory designed the supplied mounting bracket and then cluttered-up the fuel plumbing in that area DOES not allow any pump to just “slide in”.. In fact, just changing an impeller is a full-on knuckle bleeder is many engine rooms..

We did re-design the large diamond shaped mounting plate to allow clearance without having to remove the front engine bracket, but you need to say it this way — one can “jiggle it” in place..

In every installation that uses the mounting bracket (Black) in the attached picture, if doable, add a 1/2″ spacer kit behind it.. That 1/2″ extra clearance makes it much closer to “slide in” .. Dumping the fuel cooler and re-doing the fuel line/hook-up in that area is major as to having good access.. It’s real obvious that the engineer that designed this mount had no clue as to the clearance ramifications it would cause trying to R&R this high maintenance component..

Hopefully an owner like yourself that has gone thru this can add something useful from a “end user” perspective.. Mine comes from doing this in the shop with tons of room and not having to be a contortionist like you have to be inside many boats..—Probably not a fair comparison.

Tony
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