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Can someone tell me the difference between 1985 R80 small valve heads, And the heads from a r65??


Thanks Bob

Bob Distelcamp wrote:Can someone tell me the difference between 1985 R80 small valve heads, And the heads from a r65??


Thanks Bob

The valve springs and the rocker arm assemblys and valve cover gaskets are the same but everything else is different.

Some of the "everything else" would be valve diameter, valve stem diameter, combustion chamber volume...

Major Softie wrote:Some of the "everything else" would be valve diameter, valve stem diameter, combustion chamber volume...

Intake port and exhaust port diameter and.........

I think they're both made of aluminum....

Major Softie wrote:I think they're both made of aluminum....

Don't step too far out on that limb, Kurt.

Major Softie wrote:I think they're both made of aluminum....

As per Rob's suggestion:

I think there is some likelihood that they might possibly both be at least partially made of something that possibly might be somewhat aluminum-like.

It is nice to be among people who are so helpful to others in need. I have heard that on some forums that people make fun of other people, or give them useless answers, or ones that are just plain wrong.

Time to take my meds and a nap.

Duane Ausherman wrote:It is nice to be among people who are so helpful to others in need. I have heard that on some forums that people make fun of other people, or give them useless answers, or ones that are just plain wrong.

Time to take my meds and a nap.

Tch, tch, tch, Duane! Listen to you! One would think that you think the Post 1970 Airhead forum exists solely for exchanging information and solving problems relative to post 1970 Airheads. Nothing could be further from the truth.

Well, OK, maybe there might be something further from the truth, somewhere, some day. But, you see, the actual purpose of the Post 1970 Airhead forum is for us all to amuse ourselves, using Post 1970 Airhead issues to kick off the discussion.

And in the process the necessary problem solving information almost always gets posted. It's actually a win/win situation for everybody, uh, except possibly for you.

Ken

Ken in Oklahoma wrote:
And in the process the necessary problem solving information almost always gets posted. It's actually a win/win situation for everybody, uh, except possibly for you.

Ken

And, probably: Bob.