SoCal Jet Boats

Classifieds => WTB => Topic started by: Beaveretriever on February 18, 2010, 05:00:27 PM

Title: Wtb aluminum 460 manifold.
Post by: Beaveretriever on February 18, 2010, 05:00:27 PM: The motor is a stock 460 that still has the cast iron manifold. The manifold is rusting bad, so I would like to run an aluminum one or I'll stick with the ol cast iron style if someone has one that's not to beat up. I'm not sure what year the motor is all I know is that the boat is a 1976 and the motor is a Harmon marine motor. Ralph?

Thanks
the beav
Title: Re: Wtb aluminum 460 manifold.
Post by: Ralph Brunt on February 18, 2010, 05:28:51 PM: i think i have an old dooe/cj manifold at my dads, i will check this weekend. you can have it for free
Title: Re: Wtb aluminum 460 manifold.
Post by: enginedoctor on February 18, 2010, 05:31:21 PM: Quote from: Ralph Brunt on February 18, 2010, 05:28:51 PM
i think i have an old dooe/cj manifold at my dads, i will check this weekend. you can have it for free

want me to make you one? ???
Title: Re: Wtb aluminum 460 manifold.
Post by: 76NORDIC on February 18, 2010, 05:38:55 PM: I have a manifold also that came off my 76 460, tommorrow can check exactly what it is
Title: Re: Wtb aluminum 460 manifold.
Post by: Marcsrollin on February 18, 2010, 06:37:44 PM: The old cast iron manifolds on those marine motors were cobra jet manifolds and other than the weight were really good manifolds!
Title: Re: Wtb aluminum 460 manifold.
Post by: IRRebel on February 18, 2010, 06:48:23 PM: I agree with Marc on that. But I have a Perfomer and a Performer RPM for the 460 laying around. Lemme know if you need pics. Got no real use for either of them, though the RPM intake is anodized Ford Blue. Both a good step up from the cast iron CJ manifold. Dual planes as well, though.

Ray
Title: Re: Wtb aluminum 460 manifold.
Post by: GlassCutter on February 18, 2010, 06:52:37 PM: Media blasting is your friend here if you are on a budget. $30 vs. $150 I'm just sayin' . . .
Title: Re: Wtb aluminum 460 manifold.
Post by: Marcsrollin on February 18, 2010, 07:07:01 PM: Here is a comparison I did a while back!

http://www.socaljetboats.com/engines/the-diffrence-between-the-edelbrock-torker-and-the-cobra-jet-intakes/msg24457/#msg24457
Title: Re: Wtb aluminum 460 manifold.
Post by: IRRebel on February 18, 2010, 09:00:49 PM: I kinda hafta mention this Marc. The "Marine Cobra Jet" intake was designed to work on CJ heads only. Yes, it fits, but way oversized for 90% of the heads out there. The Torker was designed for the mainstream of heads out there, and their port sizes, and tuned to. I guarantee you, that Cobra Jet intake's ports were WAY oversized for the intake ports on your heads at the time. Prove me wrong. ;)

There's a delicate balance sometimes between efficency and velocity. This is why port matching is so important. It affects both. I have 4 of those "cobra jet" intakes, and come get 'em if you want 'em, but understand, that is late 60's thinking.

Newer aluminum intakes offer far more than port size. Port size only really matters on cylinder heads, and on intakes when they can't keep up with the heads. Take your intake gaskets, have the head's intake ports matched to them, and do the same with your intake manifold, all will be good.

Ray
Title: Re: Wtb aluminum 460 manifold.
Post by: Ralph Brunt on February 19, 2010, 06:35:56 AM: that cj manifold came from the factory on most d3 headed marine motors and have been working for years.

just thought you mite want to know :-\
Title: Re: Wtb aluminum 460 manifold.
Post by: Marcsrollin on February 19, 2010, 09:27:38 AM: Quote from: IRRebel on February 18, 2010, 09:00:49 PM

There's a delicate balance sometimes between efficency and velocity. This is why port matching is so important. It affects both.

Ray

Says the guy running a tunnell ram and dual carbs on a pretty stock motor! ::)
Title: Re: Wtb aluminum 460 manifold.
Post by: Beaveretriever on February 19, 2010, 11:28:30 AM: I'm not trying to make more power or anything. My boat has run good for a little while now and I noticed last year that there was rust and pieces of the manifold that looked like they were going to come off. Since the boat has been sitting and the manifold has had more time to rust I would just hate to gave a chunk of shit roll thru the motor. Stock stuff works for me as far as performance, because I'm pretty sure the motor has never been gone thru and it's been running good since 76 so why change something that isn't broken. So stock or aluminum either works for me as long as the new fits like the old

The beav
Title: Re: Wtb aluminum 460 manifold.
Post by: Ralph Brunt on February 19, 2010, 11:39:27 AM: beav, if appearance is the issue then take off the maniflold have it bead/sand/media blasted and re avaluate.

the manifold i have has been sitting outside for the better part of 5 years and you would have to do it anyway.
Title: Re: Wtb aluminum 460 manifold.
Post by: 76NORDIC on February 19, 2010, 12:21:55 PM: the intake I have has been sitting in my dads garage
Title: Re: Wtb aluminum 460 manifold.
Post by: Beaveretriever on February 19, 2010, 02:02:12 PM: is the inside flaking on any of the manifolds? i can fix the outsides but its the interior that scares me.

The Beav
Title: Re: Wtb aluminum 460 manifold.
Post by: Marcsrollin on February 19, 2010, 04:23:53 PM: $207 New + shipping

http://store.atechmotorsports.com/partdetail.asp?part=EDL%2D2166&autoview=sku

Let me know if you want me to order you one , my warehouse has 3 in stock.
Title: Re: Wtb aluminum 460 manifold.
Post by: IRRebel on February 19, 2010, 04:33:38 PM: Quote from: Marcsrollin on February 19, 2010, 09:27:38 AM

Says the guy running a tunnell ram and dual carbs on a pretty stock motor! ::)

Ummmm Yeah, stock it is Marc, so sayeth you, so must be true! :screwy: Whatever :D