Just got a head, need some help...

[nickstewartroc]

Alright, so thanks to MustangSix, I have my self an E0BE-6069-BB Head. (Thanks again MustangSix!!!) Now I know its a smog head, which is easily taken care of. But here are my ideas for it so far:
1. Direct mount a 2bbl
2. Port/Polish
3. Etc....

Now for number 1, does anyone know, besides FAP and allied machines in clearwater, where a reputable machine shop is in the Orlando/Longwood area?
Also, what would be the best/easiest carb to put on it?
For number 2, are there any tricks to keep in mind for doing it?

Another thing, The head doesn't have a rocker assembly. Will the rocker assembly out of my 67' 200 work? Or do I need to get a new assembly?
I was also thinking, once back to running condition, putting on headers. I was looking at Mikes headers, but I'm not an exhaust guy, so whats the best route for the exhaust? I'd like to do dual pipes, but whats the best way to run the exhaust from the down pipes back?
Thanks for any help,
Nick

 

[rbohm]

Alright, so thanks to MustangSix, I have my self an E0BE-6069-BB Head. (Thanks again MustangSix!!!) Now I know its a smog head, which is easily taken care of. But here are my ideas for it so far:
1. Direct mount a 2bbl

this is always a good idea imo if you are going to mount a 2bbl carb. i have used the 2v to 1v adapter, and while it works, it does have its limitations.

2. Port/Polish

cleaning up the ports and valve bowls, is a good idea, but polish the combustion chamber only, not the ports. you need a little turbulence in the intake ports to get a proper fuel mixture, and polishing the exhaust ports is rather a wasted effort as they tend to carbon up anyway.

what would be the best/easiest carb to put on it?

the autolite/motorcraft 2v carb from something like a mid 70s 302 powered car is a good choice for overall performance and fuel economy.

For number 2, are there any tricks to keep in mind for doing it?

see above for most of my comments. on the exhaust side you can match the port to the gasket. take some machinist blue dye and put it on the gasket surface, then hole the gasket up to the port and using a scratch awl mark the inside edge of the gasket. when you open up the ports, go as far as the line and no further, and blend the opening back about 3/4" or so into the port. in the valve bowls you want to eliminate the sharp edges, blend the bottom of the seats into the bowl, thin out the valve guide, and even shape it for smoother airflow around it.

Another thing, The head doesn't have a rocker assembly. Will the rocker assembly out of my 67' 200 work? Or do I need to get a new assembly?

yes the rocker assembly from any 144-250 six will interchange. do however check your rocker arms and rocker shaft for wear.

I was also thinking, once back to running condition, putting on headers. I was looking at Mikes headers, but I'm not an exhaust guy, so whats the best route for the exhaust? I'd like to do dual pipes, but whats the best way to run the exhaust from the down pipes back?
Thanks for any help,
Nick

that depends on the type of header you run. if you choose a single outlet header, then you want to run a single pipe into the muffler, and then use a Y pipe to split the exhaust. if you choose a dual outlet header, then just run two pipes off the header into either a dual in/dual out muffler, or run them to a Y pipe in and a dual out muffler, or a Y pipe at both ends of the muffler. this is where a good exhaust shop will be quite valuable.

 

[mysavioreigns]

All great recommendations from rbohm.

Rbohm, what about running pipes out of a dual exhaust, to an X- or H-pipe*, then on to the mufflers, and on out the back? I think that is what several people have done, and it sounds quite well.

*I prefer the X-pipe.

 

[rbohm]

All great recommendations from rbohm.

Rbohm, what about running pipes out of a dual exhaust, to an X- or H-pipe*, then on to the mufflers, and on out the back? I think that is what several people have done, and it sounds quite well.

*I prefer the X-pipe.

8) you can do that, but that takes up a lot of room, and really isnt needed if you use a single inlet muffler. leave the X pipes to the V8 guys since they need the balance in the system.

 

[mysavioreigns]

I think you're forgetting that the coolness factor adds like 20...maybe 30 HP.

I do like your idea about a dual-in / dual-out muffler. I hadn't thought of that before.

To the OP: Good luck with the 2V Conversion. I've found a head but I'm in need of a shop to do the work for a reasonable price. The most reasonable I've found so far is Mike's guy, but I'm not sure I can stomach shipping that head out there

 

[MPGmustang]

porting is very easy, the main key is get the bowls (place under the valve head) as big and smooth as possible, don't worry about do ing the intake runner (aka log) as it's hard to get up in there anyways... IMO clean up both the intake and exhaust, if your going full race then yes gasket match, but other wise just make them smoother (I know carbon build up but at least it's bigger and can flow more with the extra meat) intake valves to 1.75 inch and exhaust valves to 1.5 inch, I'm using my 68 rockers on my 78block/head and no problems... 1 yr now...

IMO smothing out as much as possible is good, as it takes out that much more material. IMO the smoother the better.

the 2bbl is great you will enjoy it alot!! it depends mostly on what cam ur running. what ever makes the MAX power you want 1 step down from that, and that will give you the smoothest opperation and best economy

in the end, have fun and enjoy

 

[nickstewartroc]

Thanks for all the help so far guys! As for the muffler, I was planning on going with Mike's 6-2 header and running dual's to the back, I just can't find alot of information or pictures. I see Mike has exhaust kits, but it doesn't look like it includes the piping for up over the axle...

 

[bubba22349]

Have you looked at the Arvinode Dual Exhaust kit? These go over axle and out the back, think there is a video somewhere too.

 

[MustangSix]

Mike's systems are good and you can't go wrong with one, but any V8 dual exhaust system works well if you want to look at those. You only need a couple of bends to connect them to the dual outlets.

Stay away from anything bigger than 2 1/4". Even those are way larger than you need. A stock set of 1 7/8" or 2" pipes is more than adequate for a 200.

I would stay away from Magnaflows. They just don't sound right and seem to drone badly at 1500/3000 rpm on a six. A good turbo muffler like the Dynomax works well.

You may need to replace the rear brake line with the V8 dual piece. The stock six rubber line comes very close to the left hand pipe. Check carefully when you install the tailpipe.


As far as gasket matching the head on the exhaust, I wouldn't. Lots of work for not so much gain. The gaskets tend to have very wide openings, but the ports need to be taller, not wider. There is a sharp downward turn at the port exit on the upper wall that needs to come out and making the port wider doesn't help flow as much as straightening that out and fixing the sorry valve pocket area. Also, there may be air injection bumps in the exhaust port that need to come out and the valve guide area needs lots of work too. And the combustion chamber walls are too close to the valves and really shroud them badly. Lots of work to do there, but opening them up means you also have to do other stuff to keep the compression ratio up.

Porting is one of those things that you have to learn do yourself unless you have; a. A really good friend in a machine shop, or b. LOTS of money. You need a goo die grinder, tools and time. It is time intensive and grinding away can do more harm than good sometimes.