Removing the log of a 200 inline six

[fastfalcon_19]

I was looking at an old head i have laying in my back yard storage because i want to cut the log off and make my own intake. But i forgot that the 2 center cylinders exaust ports are very much apart of the log casting. the way i want to do it is keep the runners but loose the log. is there any way to do this and keep the stock exaust intact? i looked at JGTurbo's mod 250 but he took the exaust along with the intake. Its really the center 2 cylinders, the rest you can get away with

 

[aussie7mains]

IVE THOUGHT ABOUT THIS MANY TIMES, AND ALTHOUGH i HAVE A 250-2V HEAD AVAIALABLE, AND PLENTY OF ohc SIXES SHOULD i LIKE TO GO THAT WAY, THE OLD CUT OFF MANIFOLD IS CURIUOS.
IVE THOUGHT THAT CUTTING THE HEAD WHERE THE BLOCK FINISHES SO THAT THE WHOLE EXHAUST FLANGE ETC IS REMOVED WAS THE WAY TO GO. THEN YOU WOULD HAVE TO ATTACH A FLANGE PLATE TO THE HEAD AND MAKE INTAKE AND EXHAUST MANIFOLDS FROM THERE. THE ONLY TIME IVE EVER SEEN THIS DONE WAS ON A 221CI AUSSIE SIX USED IN AN ANGLIA SPORTS SEDSN, IT HAD TRIPLE WBERS ETC AND WENT REALLY WELL. HOWEVER ITS A LOT OF WORK, BUT HAVING SAID THAT ID LIKE TO GIVE IT A GO, BUT I DONT HAVE A HEAD TO WORK WITH, I DO HAVE ACCESS TO A MILLING MACHINE AND COULD PROBABLY DO THE WORK MYSELF. FOR YOU ID RECOMMEND THAT YOU GET A 250-2V HEAD OR THE ALLOY CLASSIC INLINE. OR IF YOU WANT TO GO REALLY HARD GET AN AUSSIE OHC ENGINE. IVE LOOKED AT COWICHAN BAY ON GOOGLE EARTH AND YOUR A LONG WAY NORTH THERE, ALMOST DIRECTLY OPPOSITE ME IN PERTH.
ANYWAY BEST OF LUCK AND KEEP IN TOUCH
A7M
PS IM NOT SHOUTING JUST ENGAGED CAPS LOCK BY MISTAKE

 

[Anlushac11]

I asked my machine shop about doing this and he said he cant as he doesnt have some kind of positionable surface mill. He did recommend another guy who has one.

Apparently the head clamps on the deck surface with a big honkin magnet and then that surface can be moved anywhere from 0 deg horizontal to 90 deg vertical. The guy can then mill off the log at any angle.

I had thought about getting the log milled off at a angle so that the exhaust ports would not be touched but the log would be milled off at a angle from the top of the runner to the start of the top of the runners.

I then decided that the shorter exhaust port runners was not a bad thing and when milled vertical to side of the head the exhaust ports become divided. Just need to make a new exhaust manifold and flange and since I will be making a header for a turbo anyways not that big a draw back for me.

 

[ludwig]

Way back a couple maybe four years ago, there was a rash of guys cutting the log off of their heads. One fellow had a machine shop do it. Another guy took a wormdrive Skilsaw 77 with a metal blade. He rigged up a plane surface at the level of the carb mount for the saw plate to ride on and simply ran the saw across the inlets. He ended up with a consistent and straight cut since he had a guide surface on one side of the plane.

I don't know if he ever went farther than that. However, you could do likewise and then have your machine shop dress out the cut surface before you proceed with adding a plenum or whatever.

 

[fastfalcon_19]

yeah, i was thinking of just cutting it myself and then bring it to a machine shop, or just wait till march cause i start my college automotive courses and they have equipment i can use. also i do have this head laying arround so im thinking of drilling 4 holes in the side of the log. for side drafts. but only if its possible to braise to the iron. im pretty sure if i make 4 short steel runners that will come off the log i can braise them to it

 

[ludwig]

You could bolt the head to the narrow side of a block of wood like a 6x10, then take it to your machine shop. He would lay it on it's side, secure the block and plane the log off down to the intakes.

 

[fastfalcon_19]

i was even going to just mill the intake off to the center where the casting line is i wouldnt know what to do after that though...

 

[64falconsix]

about 2 months ago there was a lynx manifold kit listed on ebay, it was posted on this site in the fleabay section. the kit required you to cut the log off and weld a steel plate that that came with the kit to the head . it had an aluminum intake that was setup for 3 sidedraft webers. I think there are a few members on this forum that have done this ,I remember seeing pics somewhere.

 

[64falconsix]

heres another option,there are some good pics toward the bottom of the page.http://fordsix.com/forum/viewtopic.php?f=22&t=39565&hilit=cut+log+off