ph1 head onto ph2 172 block

[JamesWilson]

Hey guys,

I've got what I believe to be a ph1 head, with a 182 rocker cover. I'd like to fit this to my ph2 172 block with standard 172 inlets.

I've seen that the breather plates are different between 172 and 182, and they are NOT interchangeable. I've also heard that you cant just swap rocker covers over because they are matched to the head.

What is the easiest way to get it fitted and working?
Can I just bolt the rocker cover on from my 172 and it will be okay or will i need to do something else?

edit: just thinking it could be a 182 head, with ported exhaust manifold, inlet looks like it hasn't been touched thought, hoping its a ph1

Thanks
James

 

[VikkiB]

The rocker covers are machined to the head. So if you have a ph1 head and 182 rocker cover, these aren't useable.

 

[JamesWilson]

If it is a 182 head that had exhaust port work, is it possible for me to use the 172 lower inlet, 182 upper inlet, put the breather pipe straight onto the 182 upper inlet and bolt my throttle body on?

 

[JamesWilson]

Right after comparing some pictures on here to the engine I have.

It appears I have a 182 engine/head and need to put it into a 172. Searching as much as I can, i've found that if i use the 182 plenum, everything will fit just the carboncan pipe goes onto the plenum, and there is an extra line on the plenum i need to block. is this right?