new 5.7 1987-1996?

[newtoboat101]

looking to repower my boat 1988 thompson 240 ,right now i have 5.0 4 barrel/alpha 1 gen1,looked at reman 5.7 3800 dollars ,new 5.7 4600 ,now my question is are they actually brand new motors from factory or are they stating there new , but just reman anyway ,and who is a repretable engine company out there ,when you read reviews of any company ,its a crap shoot also these prices are for long blocks ,new one with tins

 

[jimmbo]

Mercury sells New and Remanufactured Motors. At the very least, they will provide an Engine that is built correctly for Marine Use.

 

[Scott06]

looking to repower my boat 1988 thompson 240 ,right now i have 5.0 4 barrel/alpha 1 gen1,looked at reman 5.7 3800 dollars ,new 5.7 4600 ,now my question is are they actually brand new motors from factory or are they stating there new , but just reman anyway ,and who is a repretable engine company out there ,when you read reviews of any company ,its a crap shoot

Michigan motorz was good for me six years ago when I repowered. I bought a partial engine package which was a new base engine plus intake carb and ignition. Yes the new base engines are new same engine merc and Volvo would use to build it’s complete engines.

It was more money for new but now on my seventh summer trouble Free was the way to go

Buying a partial and swapping accessories wiring etc over saved me like 1500-2$k back then was a nice option if you can spin a wrench

Merc also offers new and really honest to god properly remanufactured engines. If you don’t want to get your hands dirty and have the $$$ these come with a multi year warranty available at any merc dealer and is a good way for the less value conscious

 

[newtoboat101]

thanx for reply michigan motors is on my good list ,seems s&j engines are troublesome ,does anybody deal with eagle engines

 

[Bondo]

looking to repower my boat 1988 thompson 240 ,right now i have 5.0 4 barrel/alpha 1 gen1,looked at reman 5.7 3800 dollars ,new 5.7 4600 ,now my question is are they actually brand new motors from factory or are they stating there new , but just reman anyway ,and who is a repretable engine company out there ,when you read reviews of any company ,its a crap shoot also these prices are for long blocks ,new one with tins

Ayuh,..... Go for the '96, 'n up motor, 'n buy the vortec intake to match,.....

If yer replacin' the motor, this is an honest 20/ 30 hp over the '87 to '96 motors,....

 

[jimmbo]

Ayuh,..... Go for the '96, 'n up motor, 'n buy the vortec intake to match,.....

If yer replacin' the motor, this is an honest 20/ 30 hp over the '87 to '96 motors,....

Get the Intake from Mercury, or Volvo. They do use intakes that handle the Marine environment better than an Aluminium Automotive Intake.

 

[Bondo]

Get the Intake from Mercury, or Volvo. They do use intakes that handle the Marine environment better than an Aluminium Automotive Intake.

Ayuh,..... I think michigan motors has 'em in cast iron, just like Merc's, 'n Volvo's,....

 

[jimmbo]

Edelbrock offers Intakes for Marine use, for those who want Alumimium

Search results for: 'marine' - Edelbrock, LLC.

Edelbrock is the most respected name in performance! Since 1938, Edelbrock has manufactured its core products like Carburetors, Cylinder Heads, Intake Manifolds in the USA for quality and performance.

www.edelbrock.com

 

[newtoboat101]

interesting ,never thought of 96+ engine ,besides intake manifold what else wont match up ,starter?,exhaust manifolds ? flywheel and coupler? and what else? has anyone gone from 1988 5.0 to 96+ 5.7 vortec what need to be replaced? boat currently has 5.0 l with alpha 1 gen 1 ,a edelbrock 4 barrel ,and delco est ignition

 

[achris]

In a 24 footer I would definitely be considering a stroker. Pull the current 5.7 and kit it. A few more ponies at the top, but a veritable circus load of torques in the midrange... I find it 'quite interesting' that we don't see more 383s in boats. They have all the things you want in a boat engine....

Chris....

 

[Scott06]

interesting ,never thought of 96+ engine ,besides intake manifold what else wont match up ,starter?,exhaust manifolds ? flywheel and coupler? and what else? has anyone gone from 1988 5.0 to 96+ 5.7 vortec what need to be replaced? boat currently has 5.0 l with alpha 1 gen 1 ,a edelbrock 4 barrel ,and delco est ignition

I belive everything but intake would fit Incl carb and delco est exhaust coupler flywheel etc

You might run into pulley alignment issues but nothing that would stop me from doing it.

 

[newtoboat101]

thanx scot06

 

[Scott Danforth]

Edelbrock marine and Volvo manifolds come out of the same Barr casting boxes. Both available with dual alloy.

One says Edelbrock, one says Volvo

 

[dubs283]

thanx for reply michigan motors is on my good list ,seems s&j engines are troublesome ,does anybody deal with eagle engines

Can't say for quality of michigan but ime snj is unreliable. Had two issues with the reman failing after short hours, both swaps performed well. One was aerated block due to rod cap bolt failure, other one was broken head of exhaust valve. Both times snj denied build quality and proposed far fetched issues regarding failures.

Merc does have a fantastic support for quality new/reman long blocks up to complete sterndrive/inboard packages. Availability may vary however

 

[Scott Danforth]

New engines are GM crate motors

 

[newtoboat101]

i am in process of purchasing a 5.7 vortec .Intake manifold needs to be purchased , i have edelbrock marine carb 4 barrel on boat ,so thought marine edelbrock intake manifold, well they are hard to come by so , did not want a used manifold, Summitracing doesnt have edelbrock but they have non marine intake manifold for vortec ,now boat is in freshwater LAKE ontario, can i go with nonmarine intake manifold pros and cons ,please

 

[Rick Stephens]

I'm running a non-marine Performa. No problem in clean 'sweet' water of Idaho. Cannot speak to Lake Ontario.

 

[newtoboat101]

thank you rick stephens

 

[Scott Danforth]

There is an epoxy coating that some people have run . However I have had galvanic corrosion with some of the high mineral content fresh water.

 

[newtoboat101]

thanx Scott Danforth