1990 Mercruiser 5.7 needs replaced

[kdmiller8251]

Re: 1990 Mercruiser 5.7 needs replaced

Relentless:<br /><br />if you wish to email tallman8251@yahoo.com with what kind of problems, or post them that would be great. I will definitely go with a long block from someplace on line, you cant beat the price. I will make sure it is built for a marine application though. any tips are greatly appreciated I am semi new to this whole boating thing and learning the hard way fast by purchasing a used boat.<br /><br />Tallman

 

[coupedeville]

Re: 1990 Mercruiser 5.7 needs replaced

Another site of possible interest:<br /> http://www.remanufactured-marine-engines.com <br />An engine for your application is $1200, and that is a marine engine.<br />Check it out thoroughly before you discount it, all you nay-sayers. <br /> And they have a 7 year warranty.

 

[kdmiller8251]

Re: 1990 Mercruiser 5.7 needs replaced

Yeah thats one of the places I was looking at...<br />Cant beat the price... FYI though check the fine print. 7year doesnt apply to marine.. Dirty *******s... But hell for that kind of $$ I aint too worried...

 

[John Carpenter]

Re: 1990 Mercruiser 5.7 needs replaced

Tallman,<br />Made a long post in reply which did not "take". Been up since 4:30 doing a fundraiser breakfast for about 200...it's nappy time. I'll try & get to it this evening. E-mail is Jcarpen8@cs.com

 

[John Carpenter]

Re: 1990 Mercruiser 5.7 needs replaced

Feel much better now thank you! Most of the potential problems that can arise in these swap-outs can be solved up front by making sure that your replacement long block is of the same year range as the one coming out. There were several minor changes in the block design over the years. Your sheet metal HAS to bolt up (valve covers, timing chain cover, oil pan), if you have a 2 bolt main block...the oil pan will not work with a 4 bolt main block. You should make sure the dipstick hole is in the correct location. Also make sure that the flywheel bolt pattern is the same...you have to bolt up to your drive adaptor...same with your starter bolt pattern. Just make sure that the people ordering your new block get the correct year and you will be OK.<br /><br />You can buy these engines locally at places like Advance Auto...their 350 automotive long block is $850 & the marine version is $1200...differences are primarily in the head gaskets, freeze plugs and the cam. The marine cam is ground to produce more low end torque...go for it. Same thing with them on the warrantee...it is less on the marine engine. At least with them, if you have a problem they are local.<br /><br />You should be able to swap one out from start to finish in a day. One thing we have started to do is to run the engine before you put it back in the boat. Simply use some 4X4 blocking under the engine mounts, run a garden hose to the water pump and about 10' of 4" flexible plastic hose from the exhaust (or whatever fits). Use a portable fuel tank...just cut off the fitting where it would connect to an outboard & clamp to the fuel pump. Hook up a battery, wire in a switch and start that sucker up. Unless you really get carried away with the throttle, it will just sit there and run. I like to let them run for at least 15-20 minutes to make sure there are no oil or water leaks. It's a lot easier to fix them while the engine is still out of the boat Have fun...hope this helped more than it confused. Best.......John

 

[kdmiller8251]

Re: 1990 Mercruiser 5.7 needs replaced

Ok relentless. sounds great. Thanks for the heads up!<br /><br />Tallman