Damn just noticed that...

Yeah, they are only a couple bucks for a pack of like 4 or 5.... And they are good to have around... They come in handy for routing wires, vaccuum lines, etc...

 

This thread turned into being a better thread than I thought it would be lol, good info on here.

Internally, are the newer (no oem breather tank) blocks identical to the older (with oem breather tank) blocks? Like all the oil passages and such. I am guessing they are and that honda just simply put a freeze plug where the breather was to cut costs. I have only worked on the older blocks with the breathers on them.

 

They are cast the same as the older blocks and just not machined at that location, there is no freeze plug. In theory you could drill/mill the area out and run an oem type setup on those blocks. I think the hole on the oem is like 34mm or something like that.