Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

Mercruiser 470, 490

csuccess's Avatar
Visiting Guest

Posts: n/a

11-14-04, 10:50 PM   #1  
Mercruiser 470, 490

I am looking for a Mercruiser 470 or 490 (4cylinder engine). I would like to rebuild it. Does anybody have one cheap that needs work? I am in Alabama.

Calvin Lasley
[email protected]

Sponsored Links
omcparts's Avatar
Visiting Guest

Posts: n/a

11-14-04, 11:47 PM   #2  
Calvin why not go to a V-6 from the wreckers instead. Yours is only made by mercruiser and parts are big bucks for any thing for a 470 vers a GM or Ford V-6. Maybe look up mercruiser stern drive conversions on a seach engine to get more info. Hope this helps Wayne

PS dont worry about gear ratio,s just go 2 pitch larger on the prop to make up for hp.

Shiprekd's Avatar
Visiting Guest

Posts: n/a

11-30-04, 09:40 AM   #3  
With close to 20 years being around Mercruisers, my advice would be to find a decent core some place. Even ebay has some good deals if you make sure the seller is reputable.

BE EXTREMELY careful with prop changes to crutch a gear ratio mis-match. Stress on possibly a(n) already weak drive could detonate it and in the very least, spin a few prop hubs. Re-powering with any motor that has more horsepower and torque can and will invariably cause a mechanical problem with anything that is weak. Just the gear ratio mis-match alone can cause planing, speed, rpm, and handling problems.

Find a core through ebay, or a boat yard.

Search this Thread