Getting a project motor

AaronG

Petty Officer 1st Class
Joined
Aug 22, 2004
Messages
234
This is all third hand, but I believe it to all be true. A friend of a friend of mine used to work at a reputable Boat yard. A few years back one of their customers bought a rebuilt( I think) mercrusier 5.7 engine. While it was still under warrenty, something broke in the top end and the customer made a warrenty claim to mercrusier. Supposedly, it just needs one of the heads reworked. To the shops suprise mercrusier told the shop not to bother with the engine, and to just install a new one for the customer. For some reason they also never sent the old engine back. Anyway, my friend's friend who was the service manager at the time took the motor home, and in his garage its has sat for some time. I thought it would be a good idea to buy the engine, fix whatever is wrong with it and save it for when I need to repower my boat (1996 5.7lx /alpha 1).<br /><br />I haven't seen the motor, but I'm told its late 80's vintage, has extreamlylow hours and was fresh water cooled, so corrosion isn't an issue. It is really just the block and heads, nothing else. The price is $50. My plan was to buy this thing, and go through it, replacing anything thats worn out. Since it needs head work, I was hoping I could just put vortec heads on it. If I can, do they have to be a certain type (i.e marine)? I know I'll need to order a marine gasket set. <br /><br />Will this thing bolt up to my alpha 1?
 

Bondo

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Joined
Apr 17, 2002
Messages
71,082
Re: Getting a project motor

There are Only 2 different Vortec Head castings.......<br />You want a set of the 906 castings......(last 3 digits)<br />No, there's No Such Thing as a Marine Head Casting......... Just different Chevy castings,.. Some Better than Others....<br /><br />IF it's a Late 80s, with the 1pc. rear main seal,......<br />Yes, It'll bolt up to Your Driveline.......
 

AaronG

Petty Officer 1st Class
Joined
Aug 22, 2004
Messages
234
Re: Getting a project motor

I knew there was something with the RMS. If it turns out to be a 2 piece, is it worthless to me? I'll still get it b/c my father in law can use it in his boat. (older mercrusier inboards)
 

Flukinicehole

Petty Officer 1st Class
Joined
May 29, 2004
Messages
365
Re: Getting a project motor

Get the engine you can use it with different flywheel and coupler.I will tell you these engines are notorious for cracked heads.I bet this is what happened to this one.For 50 bucks Ill buy it.
 

Bondo

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Joined
Apr 17, 2002
Messages
71,082
Re: Getting a project motor

Ayuh,.......... It Sure appears that You are Right, 1900sx...........<br /><br />I Didn't know that........ Which Really $uck$... I've got a set of 906s at the MachineShop Now.....<br />They're going on the 68 Bored & Stroked 327 that's going into My lastest Project Boat.....<br />It's going in front of an Alpha1 GenII, So,... I'm hoping that I won't be hurt too badly.....<br />After all,..... A 383 doesn't Have to breath Tooo Hard to overpower an Alpha..........<br /><br />Guess I should have found a set of 062s......
 
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