need power head omc sea drive

[proline20]

Hi guys i;m looking for someone in miami fl that has power heads for 1990 1.6 liter i'm gessing it's a 115 hp humpback or some where i can get this one redone. Thanks for any help

 

[Ranger 330V]

Re: need power head omc sea drive

if its has the big hump "bubble" on the back its probably a 140. If you look on ebay I've seen two sea drives for sale pretty cheap...one is a complete setup and has good compression. I think its a 140 also. Well nevermind I guess they already sold. I was going to post links to them but they are gone. If you'll watch you'll see them on there. I think that powerhead is interchangable with the others...I'm not positive...isn't the seadrive just the tilt/trim and pivot?? I may be way off on that. The ones I've seen, the powerheads look alot alike. Good luck.

 

[Ranger 330V]

Re: need power head omc sea drive

something else...whate is exactly wrong with it?? lost compression?? have you had the heads off? they'll be alot of folks that chime in if you'll put that. On here they really like to know what the problems are and they'll give you your best route to go. Cost is pretty high when you start having to sleeve cylinders, bore, use oversize pistons....cheaper many times to just find a decent used powerhead. These things are high to rebuild if you've got much damage to the cylinders.

 

[proline20]

Re: need power head omc sea drive

Hay Ranger330v Thanks for reply ya i did bin on the one in mass lost it in last 5 sec. On the motor looking from back to front top silinder top ring is gone when it came apart it scord the silinder and piston. so you think it's a 140 hp just got boat last week it runs good had over heat first time in water idel fine under load about one minite alarm goes off that is what made me take head off. So it is a 140 hp? thanks for the

 

[proline20]

Re: need power head omc sea drive

Me agian got some prices about 2500.00 for rebuld. HELP THANKS!!!!!!!!!!

 

[proline20]

Re: need power head omc sea drive

And yes sea drive is the bracket with the trim and tilt motor bolts to that.

 

[Ranger 330V]

Re: need power head omc sea drive

if its flat on the on the back....area between the cylinders...probably 85,90,115,..if its got a big bubble there they call that a bubble back and is a 140. What are your compression numbers?? what did the place tell you they would do on the rebuild?? just rebuild the one cylinder or all?? There is another...not sea drive...but 140 on ebay right now...has 110psi on all four..its in florida too. Its an evinrude, not very pretty...but says its in good shape...his reserve is 499 and its a 153 now...its over tommorrow. its a relist...bet you could get it. post on here again for dhadley, tashadaddy, ezeke...I know there are MANY more that know but I've delt with these alot and I know they are very knowledgable on these engines and can tell you if the powerhead would bolt up. thats the route I would go..and get a manual. kencook.com you can get a OMC/Johnson/Evinvrude manual...not the one that covers a bunch of years...although I would wait and see about the powerhead first. You also need to rebuild the waterpump and I would do the thermostats before I did anything else with it...just to be sure. I would rather see you get a good used motor and part your seadrive together and save a little money than put that much money in that motor. you are in the right place for advice...MANY rebuilders here...and LOTS of years experience.

 

[proline20]

Re: need power head omc sea drive

Hay Ranger 330v i put thermosats in and put in water over heat alarm whent off. I thank you so much for the help i'm going to look on ebay right now Thanks and thanks for the names of those guy. i'll let you know what happens!!

 

[proline20]

Re: need power head omc sea drive

Hay Ranger 330v i see it on ebay how can i find out if power head will enterchange and mine does have the hump in back so it is a 140 hp. if i new it will enterchange i would buy right now. Thanks

 

[Ranger 330V]

Re: need power head omc sea drive

another name is joe reeves...I know I'm leaving folks out and I'm sorry...I'm at school and on and off here...first ones to come to mind. Send a message to them...or repost and put there names in the subject line....you may also try starting a new thread with the subject...."will other powerheads work on a seadrive"....you still have a day...I know some of them will chime in...they always do.

 

[proline20]

Re: need power head omc sea drive

thanks i did privit to tashadaddy waiting for response i called the gut with motor got answer machine i'll keep trying geting jumpy you know LOL!!!

 

[Ranger 330V]

Re: need power head omc sea drive

I hear that...tashadaddy will know...he has helped me many times...ecspecially when I was working on my 140 last year. I think he is online right now too. I'm ready to get out there myself....the bass are getting on beds...going with some buddies tonight. I sent that guy a message about that motor yesterday asking if it was a saltwater engine and hadn't gotten a response from him. Hope he calls you. I think that is an early 80's motor...I couldn't tell from the pic...not the best. If you could get it for the buy it now or cheaper you could paint and psi test that lower unit and paint the mid and t/t unit and probably make money out of the deal. lol. Let me know what tasha says...I'm interested also...alot of times you see the seadrives pretty cheap, I think because they are pretty rare and its badged OMC instead of johnson/evinrude isn't it?? If they'll interchange I could probably get a powerhead to piddle with.

 

[proline20]

Re: need power head omc sea drive

Hay Ranger330v ya tashadaddy goy back he siad he knows "0" about the sea drive i have desided that i made a BIG MISTAKE buying this thing.Thanks for the help. your the best!!!!!!!!!!!!1

 

[tashasdaddy]

Re: need power head omc sea drive

you haven't made a mistake, be patient, some one with the correct knowledge will help you. the reason i know "0" about them as i never owned of knew anyone with one.

 

[ezeke]

Re: need power head omc sea drive

Crowley Marine has the complete parts manual for your motor on-line on their website. I'm sure that it will help with this discussion and in locating the things that you need: http://www.crowleymarine.com/images/Sea_Drive/1990%2016%20SEA%20DRIVE%20986645.pdf

 

[ezeke]

Re: need power head omc sea drive

BTW, that is not a 1990 140HP engine. It is a crossflow. The 115HP crossflow engines after 1984 have bubbleback exhausts after the reclassification.

 

[Solittle]

Re: need power head omc sea drive

I have a pair of 1987 bubbleback 1.6L SeaDrives. When they came out OMC did not advertise the hp. I do have the factory service manuals and it states that these are 110 hp engines.

As to what engines will fit - there are a few posts on this in our iboat history. Use the Search function and go hunting. Dhadley I think did a couple of posts on this.

I have had my rig for 12 years and have had zero problems with the SeaDrives.

 

[proline20]

Re: need power head omc sea drive

Thanks guys i do appreciate all the help. i am going to get this thing going if i kills me hay it just mite do that. LOL!!

 

[proline20]

Re: need power head omc sea drive

Thanks for the diagrams this will come in very handy Thanks ezeke this is great.

 

[Solittle]

Re: need power head omc sea drive

The SeaDrive powerheads are pretty much the same as the non SeaDrive units. There is a difference in the engine mount I think in some years (see Dhadley post). Also the linkages for gear shift & throttle are different. The SeaDrives have a "universal joint thing" in the linkage.

I recommend that you get the OMC manual specific for your year. It is very thorough and detailed as you would expect - get the parts manual also as it has part numbers and parts explosion diagrams. OMC even has different manuals for the hydraulic vs. non-hydraulic units.