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Questions-12G295 head.

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The numbers are cast into the top of the head under the rockers.
 
Like this:

12G295.jpg


Ray
 
Thanks!! /bcforum/images/%%GRAEMLIN_URL%%/savewave.gif /bcforum/images/%%GRAEMLIN_URL%%/grin.gif
 
Tim Hollister said:
ask me how I know...
Click to expand...

How do you know? Did you bid on that one?

Tony Barnhill said:
Well, I read Vizard...& read Vizard...& read Vizard
& then I decided to build my engine back stock!

Everytime I read that book I wish I'd gotten an engineering degree!
Click to expand...

After getting a mechanical engineering degree, one realises that his work is just standard practice and deductions, written in an entertaining manner. He is as such an excellent design engineer, but he excells in the quantity of testing, record keeping, in his entertaining writing ability (together with his wife), in deduction of problems, and he isn't afraid to make a new part to try to resove the problems.

Stock engines are designed as a compromise between economy of assembly and good performance. The image of the company determines where the compromise falls. Interesting that two opposite ends of this spectrum both start with F. Ferrari builds with little concern for economy of efficiency. Thus their cars perform very well, and are very expensive. Ford builds with little concern for performance or fine craftsmanship, but they are produced in enormous quantities optimised for speed of assembly.

A low cost engine like the A-series can be a much better performer if some basic quality steps are taken in the design and assembly. Mostly manifolds, ports, balancing, light weight components, cam timing, optimising springs and masses (resonant frequencies) like for example valves and valve springs, load distributions, material choices with regard to average, maximum and cyclic stress, etc.

Many times, along with better performance, you can get better fuel economy. It's all just a challenge, Have fun /bcforum/images/%%GRAEMLIN_URL%%/grin.gif
 
Mike, the 206 head I have handy has the numbers in the same spot as Rays pictured 295. The 202 has them between #1 & #2 intake valves.
The 206 also has a date code, 1/63, cast directly above the numbers.
Jeff
 
I think the orginal Bugeye head number is between 3 and 4 but I have not looked in a long time so don't hold me to that.
 
Well I had to go digging to see what I had back there and it looks like both engines have 12G1316 castings. What kind of head does that denote? One is a high compression engine and the other is low!
 
A 1316 head is not even referenced in Vizard.
 
Jack - what are all those little heads sitting in my metal building (under the shelves) - you went through them?
 
tony barnhill said:
Jack - what are all those little heads sitting in my metal building (under the shelves)
Click to expand...

elves?
 
JPSmit said:
tony barnhill said:
Jack - what are all those little heads sitting in my metal building (under the shelves)
Click to expand...

elves?
Click to expand...
hehehehe....little 948/1098 heads....hehehehe
 
As I remember Tony they are stock heads for early midgets.

Of course I am a bit smarter now and will go through them again for you if you wish on the 6th.
 
The only two heads every made for the 1275 are the 12G940 (pre somog) and the 121316 (smog) thay both make good heads for porting, in fact the 12G1316 is preferrd by some porters. Long story short, don't look at the smog head 12G1316 as being a shortcoming, it's not.
 
Nice to know since I have at least two of them!! /bcforum/images/%%GRAEMLIN_URL%%/thumbsup.gif
 
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