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43 Trunk Cabin Trawler engine repower poll
- brassbrendan
- Gold Member
- Posts: 13
- Joined: Mon May 14, 2018 5:52 pm
- Home Port: key west, florida
43 Trunk Cabin Trawler engine repower poll
I'm slowly making progress on repair/refit of grounded, partially submerged 1986 43 Trawler. Lehman 135's were submerged, not pickled, and now have heads off with cylinders and crankcase filled with ATF/Kroil/Acetone/MMO.
Heads/Valves look salvageable, but if engines need to come apart completely, I'll replace. Storage is pricey in current location. I'm doing much of the work.
Money is an issue, so on replacing, I'm considering 1 good 2726t Ford Mermaid 175 HP from a reputable shop, and 1 new old-inventory Ford 2726t marinated by Ford. I can get the pair for around $11k or $12k. I believe these would be better than Lehman 120's for similar price. 135's May yet turn up, but would cost as much.
Do any members have power plants in this range? What is your experience?
Heads/Valves look salvageable, but if engines need to come apart completely, I'll replace. Storage is pricey in current location. I'm doing much of the work.
Money is an issue, so on replacing, I'm considering 1 good 2726t Ford Mermaid 175 HP from a reputable shop, and 1 new old-inventory Ford 2726t marinated by Ford. I can get the pair for around $11k or $12k. I believe these would be better than Lehman 120's for similar price. 135's May yet turn up, but would cost as much.
Do any members have power plants in this range? What is your experience?
-
- Gold Member
- Posts: 238
- Joined: Fri Feb 12, 2010 8:53 pm
- Home Port: Osprey Marina, Myrtle Beach SC
- Location: Columbia SC
Re: 43 Trunk Cabin Trawler engine repower poll
I would stick with the 135's parts and rebuild service are readily available. You would not need to work out new props or go through re working motor mounts and fuel lines ect. Swapping engines types is always more complicated than one would think. plus the Lehmans are darn good engines. the ones you have may be OK. Were they locked up or what?
1983 36 classic
1995 192 Grady White w/ 150 Yamaha
2003 Boss 8'6" Dingy w/6 hp Suzuki
1995 192 Grady White w/ 150 Yamaha
2003 Boss 8'6" Dingy w/6 hp Suzuki
- catalina_mike
- Gold Member
- Posts: 721
- Joined: Mon Mar 09, 2015 11:20 am
- Home Port: Dana Point
Re: 43 Trunk Cabin Trawler engine repower poll
Talk to a reputable rebuilder (yelp reviews). Unless it's fused they should be able to pull it apart and dip then rebuild. As a young man I rebuilt engines and compressors. In most cases it can be rebuilt.
Silverton 2007 36C
Sold - Albin 1999 28TE
SSI Instructor 13937
SDI / TDI Instructor 18172
USCG 100 Ton near coastal
Sold - Albin 1999 28TE
SSI Instructor 13937
SDI / TDI Instructor 18172
USCG 100 Ton near coastal
- brassbrendan
- Gold Member
- Posts: 13
- Joined: Mon May 14, 2018 5:52 pm
- Home Port: key west, florida
Re: 43 Trunk Cabin Trawler engine repower poll
Rebuilds would cost almost as much as the 2726t's. I am under belief/delusion proposed replacements would match up to wiring/gauges. Gearboxes match and footprint dimensions are identical. Props are off for repair anyway, so pitch change is no biggie.
I live quite far from boat and am paying Key West storage rates. Only have a week here and there to work. last time, I didn't have correct pulley adapter, so couldn't get good torque on flywheel. I took care of other work.
Engines weren't running when grounded - I don't think cylinders are fused. I have a truck at yard, so I can escape with pulled 135s, which should have some value elsewhere. BTW; I've got yard pirates wondering why I'm not throwing money at them. I think I should move as soon asap.
I live quite far from boat and am paying Key West storage rates. Only have a week here and there to work. last time, I didn't have correct pulley adapter, so couldn't get good torque on flywheel. I took care of other work.
Engines weren't running when grounded - I don't think cylinders are fused. I have a truck at yard, so I can escape with pulled 135s, which should have some value elsewhere. BTW; I've got yard pirates wondering why I'm not throwing money at them. I think I should move as soon asap.
- brassbrendan
- Gold Member
- Posts: 13
- Joined: Mon May 14, 2018 5:52 pm
- Home Port: key west, florida
Re: 43 Trunk Cabin Trawler engine repower poll
Rebuilds would cost almost as much as the 2726t's. I am under belief/delusion proposed replacements would match up to wiring/gauges. Gearboxes match and footprint dimensions are identical. Props are off for repair anyway, so pitch change is no biggie.
I live quite far from boat and am paying Key West storage rates. Only have a week here and there to work. last time, I didn't have correct pulley adapter, so couldn't get good torque on flywheel. I took care of other work.
Engines weren't running when grounded - I don't think cylinders are fused. I have a truck at yard, so I can escape with pulled 135s, which should have some value elsewhere. BTW; I've got yard pirates wondering why I'm not throwing money at them. I think I should move as soon asap.
I live quite far from boat and am paying Key West storage rates. Only have a week here and there to work. last time, I didn't have correct pulley adapter, so couldn't get good torque on flywheel. I took care of other work.
Engines weren't running when grounded - I don't think cylinders are fused. I have a truck at yard, so I can escape with pulled 135s, which should have some value elsewhere. BTW; I've got yard pirates wondering why I'm not throwing money at them. I think I should move as soon asap.
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- Gold Member
- Posts: 2115
- Joined: Fri Sep 22, 2006 7:35 am
- Home Port: Mystic, CT
- Location: New Port Richey, FL
Re: 43 Trunk Cabin Trawler engine repower poll
Your assumptions sound reasonable to me and I agree that what you are thinking would be better than rebuilding questionable engines.
You can only change prop pitch by 2 inches, but that should get you in the ballpark if the new tranny ratios are the same.
I "assume" the new engines are sea water aftercooled. If so I would change them to antifreeze cooled when you install them. You'll take a hit on horsepower, but probably not at cruising speeds.
You'll get a big increase in longevity and ease of maintenance.
Add a pyrometer to monitor EGT and you'll be safe.
Good luck with the project.
You can only change prop pitch by 2 inches, but that should get you in the ballpark if the new tranny ratios are the same.
I "assume" the new engines are sea water aftercooled. If so I would change them to antifreeze cooled when you install them. You'll take a hit on horsepower, but probably not at cruising speeds.
You'll get a big increase in longevity and ease of maintenance.
Add a pyrometer to monitor EGT and you'll be safe.
Good luck with the project.
Formerly
1983 40 Albin trunk cabin
Attitude Adjustment
Mystic, CT
1983 40 Albin trunk cabin
Attitude Adjustment
Mystic, CT
- brassbrendan
- Gold Member
- Posts: 13
- Joined: Mon May 14, 2018 5:52 pm
- Home Port: key west, florida
Re: 43 Trunk Cabin Trawler engine repower poll
Thank you for help, especially to Jay.
I'm wondering if I should include 120's as possible replacement for 135's.
Would boat be under-powered?
I'm wondering if I should include 120's as possible replacement for 135's.
Would boat be under-powered?
-
- Gold Member
- Posts: 2115
- Joined: Fri Sep 22, 2006 7:35 am
- Home Port: Mystic, CT
- Location: New Port Richey, FL
Re: 43 Trunk Cabin Trawler engine repower poll
There is essentially no difference in the performance you'd get. You'd be cruising around 7 to 8 knots regardless. And fuel consumption will be based on horsepower actually used, and these engines will use the same for all practical purposes.brassbrendan wrote: ↑Thu Jan 03, 2019 12:24 pm Thank you for help, especially to Jay.
I'm wondering if I should include 120's as possible replacement for 135's.
Would boat be under-powered?
Formerly
1983 40 Albin trunk cabin
Attitude Adjustment
Mystic, CT
1983 40 Albin trunk cabin
Attitude Adjustment
Mystic, CT
- brassbrendan
- Gold Member
- Posts: 13
- Joined: Mon May 14, 2018 5:52 pm
- Home Port: key west, florida
Re: 43 Trunk Cabin Trawler engine repower poll
Many thanks, Jay.
- RobS
- Gold Member
- Posts: 4044
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- Home Port: Center Moriches, NY
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Re: 43 Trunk Cabin Trawler engine repower poll
I believe the 120's are rated at 100rpm less than the 135hp. Jay could confirm. If so the 120's "may" need to have a tad more prop than the 135's to be propped right...
Rob S.
"TENACIOUS"
1974 Chris Craft 36' Commander Tournament
Cummins 6BTA 330B's
(Former Owner)
"TOY-RIFIC" 2000 28TE, 6LP, Hull 408
Luck is the residue of good design.
"TENACIOUS"
1974 Chris Craft 36' Commander Tournament
Cummins 6BTA 330B's
(Former Owner)
"TOY-RIFIC" 2000 28TE, 6LP, Hull 408
Luck is the residue of good design.
-
- Gold Member
- Posts: 238
- Joined: Fri Feb 12, 2010 8:53 pm
- Home Port: Osprey Marina, Myrtle Beach SC
- Location: Columbia SC
Re: 43 Trunk Cabin Trawler engine repower poll
I have never heard of the 2726t mermaid's. is there a good part's and tec support shop. Can you tell us more about them. how is the project going?
1983 36 classic
1995 192 Grady White w/ 150 Yamaha
2003 Boss 8'6" Dingy w/6 hp Suzuki
1995 192 Grady White w/ 150 Yamaha
2003 Boss 8'6" Dingy w/6 hp Suzuki