engine swap help

[ander]

Hello folks,<br />I bought a 79,22.5 SeaRay overniter 228Mercruiser(cracked block) with a TR outdrive.<br />Im replacing the 305 with a 98 model 5.7 mercruiser complete set-up including manifolds, pumps etc.<br />My Question is how to correctly plumb the new set-up that includes a crank driven sea-water pump my old system didnt have, it used an impeller in the outdrive to supply the cooling . Do I use both the impeller and auxillary crank driven pump?, I would much prefer to use the late model manifolds that came with this new engine. <br />Thanks

 

[dick]

Re: engine swap help

Hi there, TR drives used a belt driven sea pump mounted on the front of the engine , there isn't a pump in the leg. Are you sure it's a TR ? or is it a R or MR ? R and MR are just earlier versions of the Alpha drives , they have pumps .

 

[ander]

Re: engine swap help

Thats whats confusing me too, searay tells me this unit serial # indicates a TR, and everything in reference material says it should have a belt driven pump Searay did say this was a little of an odd match -up ordering a 228 with a big-block outdrive but they said it did happen some.. Any help otherwise identifying this unit will help too

 

[dick]

Re: engine swap help

OK forgot you had a "SeaRay" searay .Merc and SeaRay did team up and put engine packages together but what we need to know is the type of drive in your boat.<br />-did you pull the old engine out and if you did is there a transmision attached to it ?<br />(TR uses tranny, R/MR no tranny)<br />- is there a shift cable coming through the transom? (R/MR uses a cable for shifting)<br />-also TR drives are huge and take two guys to lift R/MR much smaller.<br />Let us know what you find.

 

[ander]

Re: engine swap help

Thanks ****, you are right, iva R, or,MR on this boat,(no tranny).So, now I wonder if my old gimble will mate to my new set-up, I did get the bell housing with the new engine.All the while hoping this little upgrade in motor will be OK 4 this unit.<br />Thanks for your help.