200ci 221ci 250ci

[mikeeman_XWFORD]

Hey Guys,

You have all inspired me, and the 221ci motor is going to be rebuilt, not replaced with a V8.

I have one and a half million questions, but i will do it one step at a time, this car is also a learning project for me. I got out of racing go karts to start this. I am glad that i did. I need to get my head around terms like CFM, 2v manifold, 2V carb. Lots of things i need to pick up as to what i want on my cruiser. I need to work out what head/manifold and carburettor i will put on this thing, and from what i read it can be a mathematical science.

Plan to pain the engine blue, and repace as much as i can with chromes, alloys and braided hoses.

My first question, does anybody have images, drawings or diagrams on this motor configuration? The book that i have for my car and motor has great images, they all just show the rocker cover.........almost all of them

If you guys can help, lend advice, previous no, no's that would be great.

Stay safe and chat with you all soon

Mike

 

[rbohm]

Hey Guys,

You have all inspired me, and the 221ci motor is going to be rebuilt, not replaced with a V8.

I have one and a half million questions, but i will do it one step at a time, this car is also a learning project for me. I got out of racing go karts to start this. I am glad that i did. I need to get my head around terms like CFM, 2v manifold, 2V carb. Lots of things i need to pick up as to what i want on my cruiser. I need to work out what head/manifold and carburettor i will put on this thing, and from what i read it can be a mathematical science.

Plan to pain the engine blue, and repace as much as i can with chromes, alloys and braided hoses.

My first question, does anybody have images, drawings or diagrams on this motor configuration? The book that i have for my car and motor has great images, they all just show the rocker cover.........almost all of them

If you guys can help, lend advice, previous no, no's that would be great.

Stay safe and chat with you all soon

Mike

8) we are glad to help in any way we can. as for some of the terminology

cfm =cubic feet per minute. it is how many cubic feet of air a carburetor can flow in one minute at 1.5 or 3 inches of vacuum on a test bench. holley tests their 4 barrel carburetors at 1.5 inches of vacuum, and their 2 barrel carburetors at 3 inches of vacuum.

2v manifold = an intake manifold that is designed to mount a 2 barrel carburetor

2v carb = a carburetor that has two airflow passages, also known as a 2 barrel carburetor

as for what head and carb to put on the engine, yes there is a mathematical formula for selecting a carburetor. however i tend to prefer to go by experience when selecting a carb as the formula isnt very flexible.

as for the head you have a few choices;

a modified stick head. not a bad choice for a street engine with a few mods, but performance is limited

an aussie or argentine head with a removable intake. these heads are getting kind of rare even in their country of origin. the aussie 250 2v head if you can find one is a good choice for a healthy street engine, as is its argentine counter part. be aware though that if you find one it will likely need some work to get it into proper shape. and if you get an argentine head, you will have to find or build a set of headers for it as the exhaust ports are in different locations.

the aussie crossflow head is also a good choice, but it requires some block and head mods to work, and it requires a crossflow design cam. there are also other issues, you will have to build an intake that clears the distributor or go to a distributorless ignition system.

the classicinlines aluminum head is the pinnacle of head design for these little sixes, too large for a 144, and a bit large for the 170, but for a 200 or 250 it works great. it has a removable intake, and headers or stock exhaust manifolds fit nicely. with this head you have a choice of a 2v, a 4v, or an efi intake. in my opinion this is the best way to go, but it is also probably the most expensive way to go also. in the end the choice is yours, but if i had the money i would go with this head.

 

[AzCoupe]

You forgot to mention a converted log head. While they are not as good as an OZ/AR head, they are certainly better than a stock log. We'll be dyno testing a couple converted heads, with various carbs, in the near future. Should be fun.....

 

[rbohm]

You forgot to mention a converted log head. While they are not as good as an OZ/AR head, they are certainly better than a stock log. We'll be dyno testing a couple converted heads, with various carbs, in the near future. Should be fun.....

8) good point, but they are much more work than the average inline six builder is willing to do, so i tend to forget them.

 

[MPGmustang]

You forgot to mention a converted log head. While they are not as good as an OZ/AR head, they are certainly better than a stock log. We'll be dyno testing a couple converted heads, with various carbs, in the near future. Should be fun.....

8) good point, but they are much more work than the average inline six builder is willing to do, so i tend to forget them.

A converted Log head???? i can only guess at this time what if means, a log that has been chopped off and a costom intake bolted on?? does anyone here on the forums have a pic of one would be nice to see

 

[AzCoupe]

A converted Log head???? i can only guess at this time what if means, a log that has been chopped off and a costom intake bolted on?? does anyone here on the forums have a pic of one would be nice to see

http://classicinlines.com/LogMods.asp

 

[MPGmustang]

doh!!! i knew that... thanks

 

[rbohm]

A converted Log head???? i can only guess at this time what if means, a log that has been chopped off and a costom intake bolted on?? does anyone here on the forums have a pic of one would be nice to see

http://classicinlines.com/LogMods.asp

8) ahh, i was also thinking of the people who had cut off the log and built their own intakes for the log head.