This head any good?

[64 inboard]

Ive got a 1968, 200 that Im planning a mild Hi-Po rebuild and am wondering if a head from an 82 Zephyr is a good candidate to replace the 68 head? From what I gather the 77 to 80 heads have bigger valves and hardened seats. I can find no reference to how "good" an 82 head is? Can anyone help?

 

[rbohm]

8) tha head will do just fine. you will have to mill it about .075" to bring the compression ratio back up. the log actually has more volume than the early head as well which also helps.

 

[64 inboard]

So, its the same head as the 77 up ? I was concerned if it might be more of a "smog" head.

Can a guy benefit from a port divider in the center port, even if Im not running headers?

Any benefits from a 250 head?

 

[rbohm]

So, its the same head as the 77 up ? I was concerned if it might be more of a "smog" head.

the heads are all basically the same, though there are differences in valve size, the later heads have larger valves, and the later heads have larger log volume.

Can a guy benefit from a port divider in the center port, even if Im not running headers?

yes there is a slight benefit, but some wonder if the cost of installing one is worth the effort.

Any benefits from a 250 head?

it is the same head as the later 200 head. if you can find one, buy it. if you can find an aussie 250 2v head though, that would be a better way to go, but they are kind of rare in the states, and almost as rare in the land down under these days.

 

[CZLN6]

Howdy:

The '82 Zephyr head is a great candidate for a rebuild and use on your engine. The only smog issue on the '82 head is a window on the side of the log below the carb mount. You will need to make a cover for it. It is easy.

In 1982 the 200 head and the 250 head are identical. The only year(s) where they were not identical is probably 1969 , and then only with the "M" suffix castings. From 1970 - 74, things were very mixed with what went on what. We have found pre "M" castings on 250s and "M" castings on 200s. ??????? So, NO, in 1982 there is no advantage to a 250 head.

In your case an exhaust port divider benefit will be marginal. I'm one who believes in them, even for a small benefit in evening the flow from cylinder to cylinder. If I were doing a performance upgrade for a cylinder head for a boat like yours, I'd take the time to tightly fit a divider and have it welded in prior to machining. That's my two cents, for what it's worth.

Adios, David

 

[64 inboard]

David,
Thanks for the help on this! I can buy this whole engine for a hundred bucks.. has less than 80,000 miles, didnt think that was out of line. Biggest problem is it about 5 hrs away. Still working on that tho.

Did any stock head have a seperate intake?

 

[rbohm]

Did any stock head have a seperate intake?

8) none on the US for the small six, though the argentine and australian sixes did have removable intakes.

 

[64 inboard]

Thanks,I thought I read somewhere they did....

BTW, I talked to a guy on Sunday that last week sold a Ausie head, fuel injection, and alum valve cover for 400 bucks last week on ebay... I think he's also on this site.. Sounded like a great deal?

 

[rocklord]

BTW, I talked to a guy on Sunday that last week sold a Ausie head, fuel injection, and alum valve cover for 400 bucks last week on ebay... I think he's also on this site.. Sounded like a great deal?

It was a good deal except that head isn't a direct bolt on. You have to modify the block to get the head to seal properly, use an Aussie cam and header, and come up with a replacement (possibly EDIS) for the distributor since there is interference with the intake on a 200cid.

The Argie and Aussie heads that rbohm is referring to are direct bolt ons.

 

[64 inboard]

Thanks Dan,
now I dont feel so bad...

Think Im going to keep trying to find that 77 up head.

 

['68falconohio]

64 inboard,

It may be worth while for you to check craigslist for a whole motor. I got a running 250-6cyl for 75 bucks a few months ago. I've also bought two later model heads using http://www.car-part.com as a locating tool.

EDIT: Sorry, just re-read your posts and you were looking at a whole engine.

Stephen