Re: [OMC-Boats] What makes a marine engine, marine?

The 225-231 Odd-Fire and the 231-252 Even-Fire all share manifolds,
Intermediate Housing bolt patterns.

Some differences are Jeeps had a heavier flywheel and of course the
distributors and cranks differ for Odd vs Even fire engines.

On Sep 8, 2009, at 5:00 PM, BC Howk wrote:

> Lee,
>
> Now your talking another thing I've always been curious about,
> putting in a more modern, even fire.... always wondered about the
> water pump, exhaust manifolds and bolts for ther intermediate housing.
>
> I have run across a couple of optional cams for the odd fire 225,
> though
>
> http://www.flatlanderracing.com/iskycamsbuick.html
>
> I always figured "someday" I'd have to either rebuild or replace the
> 225 in my sportsman and found this while poking around on some of
> the jeep and buick sites...
>
> I tend to think Lee is right though, I recon the V6 from a Jeep
> would naturally have pretty good low end umph, makes sense that OMC
> would not mess with it, plus I have never heard of a "marine cam"
> for the 225, seems like somebody would know about it if it existed....
>
> Interesting discussion guys, looked at another forum and it appears
> that opinions vary concerning the 350 as well, some say the blocks
> are different some say doesn't matter (brass freeze plugs are
> universaly agreed upon). Then consider if they would have made
> different blocks 40+ years ago for the "orphan" buick that was put
> into Jeeps (and boats), my assumption would be that the long block
> is the same....I guess you'd have to install the drain petcock
> valves, though.........hmmmm.......intresting.
>
> Cheers,
> B.C.
>
> On Sep 8, 2009, Lee Shuster <Lee.Shuster@...> wrote:
>
> Bill that would be true of more popular Chevy, Ford, & Mopar marine
> engines. There simply are NOT different mump-stick grinds (unless
> you roll your own custom cam profile) available for the Buick.
> What would be cool is to try and substitute the even-fire 252 (4.1
> L) Buick V6. I suspect/think it would bolt right in.
> Lee
>
> From: omc-boats-bounces@... [mailto:omc-boats-bounces@...
> ] On Behalf Of BLDFW
> Sent: Tuesday, September 08, 2009 4:16 PM
> To: Evinrude & Johnson Boats of the 1960's and 70's
> Subject: Re: [OMC-Boats] What makes a marine engine, marine?
>
> In addition to the brass freeze plugs, I think the only other thing
> they include is a lower end torque cam to assist in out of the hole
> shots. You gotta be sure they know it's going into a boat and that
> they get a marine cam installed.
>
> Eight years ago I bought an abandoned 25' 1986 Bayliner Ciera
> cruiser and replaced the cracked 305 V8 with a remanufactured 350
> long block. Back then it was all of $1100. I transferred the
> intake, valve covers, and manifolds over to the new block and
> miraculously the 350 chevy long block became a whole Volvo V8.
> Never had a problem with it.
>
> -Bill
> Dallas, TX
> 1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive
> http://www.photobucket.com/evinrude_explorer
>
>
> --- On Tue, 9/8/09, Lee Shuster <Lee.Shuster@...> wrote:
>
> From: Lee Shuster <Lee.Shuster@...>
> Subject: Re: [OMC-Boats] What makes a marine engine, marine?
> To: "'Evinrude & Johnson Boats of the 1960's and 70's'" <omc-boats@...
> >
> Date: Tuesday, September 8, 2009, 4:45 PM
>
> Yeah, I would have to say the BC is thinking the same way I would, JD.
> Usually marine-spec blocks have brass freeze plugs, but little else
> is different. The marine-specific ancillary parts relate to the
> items BC mentions.
> At least with a remanufactured long-block from a reputable builder,
> you know what you have and probably for less than $1600 for a Buick
> 225 V6.
> For example: http://usengine.us/domestics.html#amc
> Another known "weakness" of the Buick V6 is the timing chain. I'd
> make sure that area was double-checked.
> Lee
>
> From: omc-boats-bounces@... [mailto:omc-boats-bounces@...
> ] On Behalf Of BC Howk
> Sent: Tuesday, September 08, 2009 1:58 PM
> To: omc-boats@...
> Subject: [OMC-Boats] What makes a marine engine, marine?
>
> As Lee pointed out; if you ever get the blank stare from the person
> at the parts store when you tell them your working on a vintage 60's
> boat with a 225 odd fire buick V6 (used to happen to me all the
> time) just back up take a deep breath, reset and request the same
> part for a 69 jeepster and all is well!! So JD, Lee beat me to it,
> rather than a skylark I tell them a 69 jeepster. (I used to have
> one) This brings up a question that's bugged me for a long time....
>
> What EXACTLY makes a marine long block or short block....MARINE?
>
> OK, so anybody that's been reading this list should know that the
> following are special marine parts:
> carburetor/flame arrestor, altenator/voltage regulator, starter,
> fuel pump, water pump, the thermostat housing and exhaust manifolds
> are clearly application specific.....
>
> What I am talking about is the LONG BLOCK; the block itself,
> crankshaft, pistons/rods, heads, valves, pushrods, timing set, etc.
> Is there anything special about this. In other words, is there any
> reason why someone couldn't buy a long block for say a 69 jeepster
> and bolt on all of the marine specific stuff?
>
> I recently replaced the "long Block" in my tow vehicle (89 F-250 351
> windsor w/EFI), was less hassle than tearing down the old engine,
> figuring out how to get all the parts to a machine shop and less
> expensive than a rebuild anyway. It came with a 7 year 70K mile
> warranty, was tested and guarenteed, they dropped it off at my door
> less than 36 hours after ordering it and picked up the core when I
> was done. This was my first engine swap and after all the smog and
> computer stuff, I'm thinking doing something like that with that
> SUPER SIMPLE little V6 should be a piece of cake, once you get
> access to a hoist tall enough...
>
> Any thoughts???
>
> Cheers,
> B.C.
>
>
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Received on Tuesday, 8 September 2009