douglee25
Well-Known Member
That small block is pretty sick looking from the dyno sheet.
What is that engine going to run price wise?
Doug
What is that engine going to run price wise?
Doug
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That small block is pretty sick looking from the dyno sheet.
What is that engine going to run price wise?
Doug
The target is about $10K~$12K. The MPI people are supplying some of these to Off Shore Power Boat Racers this season to see what breaks. Reportedly, there is a guy in Louisiana that did a pair in a 90~91 42DA in place of 7.4 carbureted motors. They cut 1500 lbs of weight out of the boat and added a total of 400 HP and 200 lb. ft of torque.
He was able to add 2" in prop pitch and the boat cruises at 30 mph at 3500 RPM and with a light load has seen 45 mph+ /GPS on the top. Cruise fuel is about 22 gph! Word is that in the last year the motors have logged close to 200 hrs with no issues. I would love to see and ride that boat to see how it was engineered.
The LSA motor is the Big Block replacement. There will not be any more produced after October this year.
You did it! :smt038now you just have to do it. Keep us postedToo late,
Just wrote the check for the Merc 8.1 MAG 375 hp today.
I'm going for the lowest cruising RPM I can get.(Reliability)
That's diesel or big block power.
SB and BB both share the same motor mount location.
Replacing my 24 yr old fuel tank. Trimming two inches off the depth for more engine room. (same as small block)Then having the bottom of the tank extended 5" down into the bilge. That will put me back at the org 100 gals.
Merc 8.1 Mag comes with fresh water cooling and dry joint exhaust.
At this point, installation for SB and BB EFI engines will be the same.
I think a 383ci is a little stressed for heading straight out 100 miles offshore in a 8500lb single screw boat.
The 496ci was built as a workhorse engine.
These are doing quite well in VA. They sip fuel.
http://www.steyr-motors.com/products/pdf/6cylbravo_E.pdf
Thanks steve,You did it! :smt038now you just have to do it. Keep us posted