1957 35HP Big Twin (hitting hard Knocking)

[HighTrim]

Re: 1957 35HP Big Twin (hitting hard Knocking)

It was just the block on that ebay listing...

I would wait for a whole, complete powerhead. Just my advice. Saves you from transplanting everything.

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

Agree...hey, maybe its still under factory warranty

 

[boobie]

Re: 1957 35HP Big Twin (hitting hard Knocking)

I've never seen one that bad either. I've seen the alum burned away from a blown head gasket but not cracked like that. Do you want OMC'S customer service phone #?? :lol: Just a joke.

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

I actually talked with the guy who sold me the lower unit that was bad to start with..he is going to give me his 40 hp Johnson as swap and sell out mine for parts.... The 40 is compatible with my other components. Some good news on a crappy day.

 

[boobie]

Re: 1957 35HP Big Twin (hitting hard Knocking)

Keep us posted as to what happens.

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

I pulled this part off circular looking on the floor there?? What is it? has fuel nipple on it I think?

 

[nwcove]

Re: 1957 35HP Big Twin (hitting hard Knocking)

looks like a lu from a trolling motor. lol need a better pic.

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

This is better

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

The wire in the fore front goes on this part... reason I took picture to remember It came off the side of the block....

 

[nwcove]

Re: 1957 35HP Big Twin (hitting hard Knocking)

the whole part is the lower cowl section you removed to get at the bottom head bolts.

 

[RogersJetboat454]

Re: 1957 35HP Big Twin (hitting hard Knocking)

It's the cut off switch...

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

I placed this part on the Cowl section.... Im taking about the part on it?? sorry for not being more clear..

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

What does it do??? Cut out fuel to motor?

 

[nwcove]

Re: 1957 35HP Big Twin (hitting hard Knocking)

the gizmo attached to it looks a whole lot like a vacuum cut out switch.

 

[nwcove]

Re: 1957 35HP Big Twin (hitting hard Knocking)

it kills spark to one cylinder if the motor is over revving

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

I see... Well, tomorrow I get an upgrade I think? to a 40hp Johnson (60 model or so I think) and put all my components back on it... We will see how that fires up on the 1st attempt? Thanks for the info as always!!

 

[nwcove]

Re: 1957 35HP Big Twin (hitting hard Knocking)

not sure if the 40 is an upgrade or not! the 57 bigtwin is a much nicer looking motor. jmo ( id still keep it and look for a powerhead!)

 

[bigballerg]

Re: 1957 35HP Big Twin (hitting hard Knocking)

ok, so I got a Evinrude 25532 ? I believe its a 1957 35hp Lark? Anyway, need help. This sucker would not even budge on crank. After soaking a night and playing hit sledgehammer on 2x4 on crank wheel it now moves freely. So, I hooked it up to battery and gave it a whirl. It cranks and spins, BUT without spark Plugs... When I put spark plugs in it wont crank and spin? What gives???

 

[nwcove]

Re: 1957 35HP Big Twin (hitting hard Knocking)

ok, so I got a Evinrude 25532 ? I believe its a 1957 35hp Lark? Anyway, need help. This sucker would not even budge on crank. After soaking a night and playing hit sledgehammer on 2x4 on crank wheel it now moves freely. So, I hooked it up to battery and gave it a whirl. It cranks and spins, BUT without spark Plugs... When I put spark plugs in it wont crank and spin? What gives???

you did what with a 2x4 and sledge hammer???

as far as the cranking problem goes, id look into weak battery, loose or corroded connections, or frayed wires. you can usually narrow them down by feeling for hot spots at the connections and through out the harness.

 

[HighTrim]

Re: 1957 35HP Big Twin (hitting hard Knocking)

It cannot overcome the compression. Weak battery, corrroded cables, dirty/loose connections are where I would start.