log head modifications with pics

[falcon fanatic]

Well, I finally got my head back and it's looking pretty awesome. Here is old v new to give you an idea of where I started from. The new head is the coveted M casting with the bigger log.

Here is the adapter. Notice it has the same 4* inclination as the stock carb mount.

And the plastic spacer

These rockers are just too cool. I'm hoping the 1.65 ratio will mak things happen with this head.

I'm especially proud of the linkage I fabbed up. Modeled on the stock piece, very simple yet effective.

Oops, I forgot to shrink that last one. Sorry.

Chamber is 51.2cc. That's down from about 55cc on my old head. Valves are 1.75 & 1.5 "swirl port" or whatever they're called. They have a back-cut looking profile with tapered stems.

Since car has been sitting for two weeks waiting for my distributor and various gaskets to show up, I decided to install this fan I've had for a while.

Poor baby wants to go vroom...

 

[Stubby]

8) 8) 8) Good job!

 

[LaGrasta]

very nice, very nice. How did you manage to get the 16" fan in there? I did, but ended up removing the vertical support and raising the hood latch.

 

[Bort62]

Very Slick, Nice integration of the 2bbl.

 

[falcon fanatic]

LaGrasta, my secret trick was to use a 14" fan instead of a 16". Should be plenty with that three-row rad, I hope. I had to cut part of the latch support, too.

 

[michael_cini]

wow, very nice work. curious to see how well she performs!

 

[wsa111]

Very nice job, quality workmanship.

You will be amazed at the performance after all the work you have done.

Good luck, William

 

[fb71]

Wunderbar, mein Herr!!!!

Looks great, man. Attending any shows with it this year?

 

[61Futura]

I'm curious about how you managed to get the chamber size down to 51.2cc on that 69"M head. They look so large compared to a 68 head from a 200. I need to decide on which head I have machined. Probably next years project though. I need to get the C4 in first to find out what RPM's I need to build for. I like the lower RPM's for less noise when I'm having fun in my other cars.

 

[Hot 6t Falcon]

Nice, VERY nice.

When I looked at your picture of the valves in the combustion chambe, the "D" edge still looked quite sharp. This picture:
http://mysite.verizon.net/vze2qw3e/car pics/chamber1_.jpg
If you milled the head to get the smaller chamber size, remember to take your dremel to the sharp edge of the D. You don't want hot spots.


Also, I used the FoMoCo "plastic" (phrenolic - no spelling skils tonight) spacer between the carb and the aluminum adapter in order to have throttle linkage CLEARANCE between the carb and the log. With your NEAT 4 degree adapter and side linkage, you may not need a plastic spacer if hood clearance is a problem..

Again - Nice, VERY nice.

 

[falcon fanatic]

61Futura, well the chamber where 63cc. The machinist did a sonic test to see how far he could go and then took off as much as he could. I wanted 50cc chambers, but he wanted to leave a little more meat on there.

Dennis, Oh well, too late. The head is already on. I guess I should have thought of that, but although the edge was a bit sharp, it was smooth. There where no jaggies anywhere. At any rate, I sort of half-assed polished all the chambers, so overall they're much better than they where.

 

[Anlushac11]

8)

Sweeeeet!

Sounds like its gonna scoot. Love the color.

 

[hasa68mustang]

8)

Sweeeeet!

Sounds like its gonna scoot. Love the color.

I have to agree with both of these comments... reminds me of what mine used to look like, the blue would turn almost a white on the edges in sunshine... man I need to get back to working on mine.

 

[Ron R]

Dam nice work.

 

[falcon fanatic]

So I fired her up this morning and she sounds totally different. definetly less "tractor" and more sports car. The timing is way out so I didn't get a good sense of what it will be like driving. I managed to crack my thermostat housing in half, so now I have to wait another however long to replace that and get back on the road.

 

[LaGrasta]

stat housings at NAPA, $8.

 

[falcon fanatic]

Finally got the car running today after sourcing a local thermostat housing. AFter getting the valves adjusted and the timing right (starting at 12*, I'll see where I go from there) I took it out for a nice drive. Whoa nelly, she's pretty frisky! Nothing that would blow your mind, especially off the line, but from 3,500 rpm up it really starts to take off. This is a huge change, because this car used to begin losing power at 4,000 and then fall flat at 4,500. Now it pulls real hard from 3,500 to 4,700. Sounds pretty wicked up there, too. Also, it cruises better at part throttle and is more responsive throughout. I'll have to take my little g-analyst out and see what kind of 0-60 times i'm getting.

 

[jahearne]

Congratulations!

 

[63Falcon200]

very nice.. I've got a couple of questions for you..
I've got an 80' head and would like to know what rocker set your using? where can I get it, and will it work on the 80'? I noticed the prefix on the part number is a C9 meaining 79, so it should fit mine..

 

[falcon fanatic]

63falcon200, I'm using the Yella Terra full roller rockers 1.65:1 ratio. I got these from Mike at classicinlines.com. Yes, they will work on your car as all of the 200s have interchangeable parts. WARNING: You will have to remove your head as these rockers use a different type of lifter and they need to be swapped out. Not a big deal. Just get all your parts and tools together ahead of time and you can do it in a day I think it took me about two hours to get my head off and another four to put it back on and get everything adjusted correclty and running right. This was working at a casual pace. If youa re considereing any head work such as a valve job, as I did, that would be a good time to do it.

If all of this scares you, consider the roller tipped rockers. They are 1.6:1 and you can just swap the rocker assembly, adjust, and go.