Jump to content
dlmrun2002

How rare is this?

7 posts / 1005 viewsLast Reply

Recommended Posts

More curious then anything. Buddy had this in his shop today. Looked like it was in good shape too.

dlm ny country

post-2527-13667667952635_thumb.jpg

Share this post


Link to post
Share on other sites

Not very rare, all 121 heads with 46mm intake and 38mm exhaust valves were marked 121Ti. They were not just used on the Ti and Tii models. It is much more unlikely to find a standard 121 head these days.

Share this post


Link to post
Share on other sites
Not very rare, all 121 heads with 46mm intake and 38mm exhaust valves were marked 121Ti. They were not just used on the Ti and Tii models. It is much more unlikely to find a standard 121 head these days.

I have a 121TI head from a 1971 "regular" 2002 that has the smaller intake valves. I think there are some folks who think that just having one of these means it came from a 2002ti.

The 121 head from my 72tii engine has the 46mm x 38mm valves.

Share this post


Link to post
Share on other sites
It is much more unlikely to find a standard 121 head these days.

I've got a standard 121 head, 71 cast on my 71.. Is that really that rare? Never thought much of it.

Share this post


Link to post
Share on other sites

my'69 (bought new) came with a "121ti" cylinder head and I'm not sure I've ever seen a US spec 2002 with a "just plain 121" head that was original to the car (check the casting date).

I didn't think there was any difference between a 121ti head and a 121 head; since compression ratios on an M10 are determined by piston height, it couldn't be that one is a higher CR than the other, and I think the valves are the same size--at least the parts book seems to indicate that.

Anyone have any thoughts--and do you have a US spec 02 with its original head marked as a "plain" 121?

Another 02 mystery...

cheers

mike

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.




×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.