Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

[KaGee]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Jimbo,<br /><br />Go to http://www.oscomotors.com/catalog.htm and jump to page 37.<br /><br />The elbow is a CRR80x3.5.<br /><br />Iboats may have now. They did not last year, so I ordered through Boatfix.

 

[Don S]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Here we see Keith hard at work on his 3.8L Stringer. <br /><br />

 

[Bondo]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Now,... Now,...... Some people Love restoring the Classics,..?...?....?... <br /><br />I think Keith has Earned his Master's Licence in Backyard Hacking from owning an OMC.......

 

[Don S]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

I think Keith has Earned his Master's Licence in Backyard Hacking from owning an OMC.......

Yea, and I gotta agree. But I bet he wishes he had a boat he could use in the water though . <br /><br />Anyways.... I finally got to use the neat graphic I found. Thanks Keith for the chance....

 

[KaGee]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Geez guys... We can't all be super rich white honkies and drive a Volvo DP. <br /><br />This post was resurrected from a year ago by a newbie. He was just following instructions by doing a search! Give us a break! <br /><br />BTW my White Anchor was not the source of my ills.<br /><br />I wish the weather would ease up so I could use the damn boat. Today is the first sunny, DRY, warm day in seems like months. After I get caught up with this yard work IF the weather holds out I MIGHT get to play on the water.

 

[jjnimphius]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

KaGee Thanks for your help.

 

[THE BEEF]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Keith<br />Thats a clean setup! <br />Beef

 

[retodd]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Gee thanks Don, that is going to be my new pic on here...Fells like what i am doing to my merc 120

 

[KaGee]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Thanks Jim & Beef... <br /><br />It's what a "dead horse" looks like.

 

[THE BEEF]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Keith<br />Can I use red high temp silicone or aviation sealant<br />on the water pump spline seal above the clip?<br />Thanks<br />Beef

 

[KaGee]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Originally posted by THE BEEF:<br /> Keith<br />Can I use red high temp silicone or aviation sealant<br />on the water pump spline seal above the clip?<br />Thanks<br />Beef

I'm not sure what you are referring to.

 

[THE BEEF]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

The rubber seal that slides over the spline just above the water pumo impeller. I believe it seals the splines going into the upper gear box.<br />Beef

 

[KaGee]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

I didn't use anything, and I don't remember the manual requiring anything. Just coat the splines with marine grease and throw it back together.

 

[doyoulikeithere]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

Chevy/GM rates the 3.8 used in their cars 80-85, with dualjet 2 bbl, at only 110HP.
How come everyone says basically the same GM 3.8 block, in an OMC marine has at least 175HP?
Seems like quite a jump.....
My 4.3 TBI Safari van only has 160.

I have a 3.8 in my boat, and it has a strange semi water cooled exhaust system. (dry cast iron exhaust manifolds, but jacketed exhaust pipes with seawater cooling) Then, it has an auto style radiator with coolant for the engine.
I wish I could properly identify this unit. Seems like a stinger/800 but the exhaust is sure different. Anyone ever seen such a thing?

 

[danond]

Re: Actual Hp of a 1981 3.8L OMC w/ 800 stern drive

You should start a new thread. This one's 3 years old.