1.6 vs. 1.8 Cam Cover dimensions
 

I posted this in my build thread, but I suspect I might get more traction here.

"1.6/1.8 question.

I'm trying to mock up my catch can, which I intend on mounting to the front of the cam cover since the reroute left all sorts of space (space which I don't have anywhere else).

Anyway ... my NA 1.6 (which the catch can is being fabricated for) is stored about an hour away. I am lazy and do not want to drive said hour. I DO have my NA 1.8 in my own garage which is adjacent to my 'shop'.

So the question is: Given that the lower timing covers and chrome vacuum tube appear to be shared components between 1.6 and 1.8's, are the cam cover dimensions roughly the same? i.e., will a bracket designed to hang off the front fit either? See picture below to get an idea of what I'm trying to do."

https://www.miataturbo.net/attachmen...ine=1392824236

-Zach

I have both in my garage, I could take some comparison photos and measurements when I get home from work.


Joey

Word of advice.
The engine vibrates massively! even more so when driven hard like on a track. those vibrations will excite all sorts of natural vibration modes of anything you try to bolt to it. Things attached to it need to be either stiff as hell with first modes well over 100 Hz or well damped with rubber mounting. I am highly skeptical you can make it stiff enough using only the two 6mm threaded holes on the front of the cam cover if you expect it to last more than a season without cracking the mounting tabs off due to high cycle fatigue.

+1

I just checked, and they seem to be dimensionless identical. I measured a bunch of dimensions and they all seem the same.


Joey

And a photo:
https://www.miataturbo.net/attachmen...ine=1392855638