OMC King Cobra 460

[BlowHo]

Re: OMC King Cobra 460

Boatin Bob - That is exactly the manual that arrived in the mail yesterday from Serayman on ebay.

The book says motor oil should be SAE 30. Is that right? Do the synthetics work better? It has a marine oil filter on it but can I go with automotive one?

I swear this is my last question. (On motor oil anyway?)

 

[HT32BSX115]

Re: OMC King Cobra 460

Motor oil is a VERY emotional thing for most people! If you ask about oil in any thread it immediately turns into an oil thread!



Most would suggest that you run a DIESEL rated oil to get the added ZDDP anti-wear additive to protect the camshaft. Straight 30 is fine. I run 15W-40 in everything. I have 3 diesels.

http://www.hotrod.com/techarticles/engine/flat_tappet_cam_tech/

Comp Cams says to use Shell Rotella T:
http://www.compcams.com/information/whatsnew/Files/225TechBulletin.pdf


Now having said all this, I would be willing to bet that if you use Mercury Marine or other 25W-40 NMMA FC-W oil you won't go wrong. If you are not going to use that oil, use any DIESEL rated SAE30 or 15W-40 type oil.


I will say that when my brother owned my Four Winns Liberator 211 (Powered by a wonderful OMC 460) that he bought new, he ran Castrol 20W-50 in it and (UGH!!) Slick 50. I tore the engine down with only about 250hrs on it and found 8 or more FLAT cam lobes!! It had great compression but because the cam was flat it wouldn't turn any more than about 4200 at WOT.


There's no silver lining though.....I read now that because diesels are getting more cat converters and exhaust after-treatment those oils are losing the ZDDP too. Some racing types and cam makers are suggesting using GM EOS and other anti-wear after market "snake" oils.


It looks like oils are leaving our old flat-tappet engines behind.....this isn't as much a problem in roller-follower cam engines.....

I suppose they'll find a suitable replacement for zddp.



Cheers,

Rick

 

[BlowHo]

Re: OMC King Cobra 460

I figured as much about the oil, being a car guy it is the same thing about the big debate. I keep reading how different marine engines are so wanted to be sure.

Do these oil filters have standard threads or are they reverse? Before I use my incredible man-strength too much, I want to make sure I am spinning in the right direction.

I'm from Puyallup by the way.

Thanks

 

[BlowHo]

Re: OMC King Cobra 460

WOOHOO! I just became an apprentice, look at me!

 

[HT32BSX115]

Re: OMC King Cobra 460

It's a standard FORD filter.

I used a BALDWIN B2 filter from Williams Oil Filter Service co in Tacoma .....Same one my old 292 Y-Block uses.

 

[HT32BSX115]

Re: OMC King Cobra 460

by the way.....I just sent you a PM.