I know it sound kinda stupid but im just curious if it possible to use the 0bd2 valve cover to the 0bd1?

 

yes they are interchangable

 

x2. the obd2 looks way better.

 

If we're talking about a VTEC valve cover, then there is no point, as they all look the same.

If we're talking about a non-VTEC B18B valve cover, then there can be problems with the PCV/breather system if you do such a swap. OBD1 B18B engines had a breather box on the block with the PCV valve in that box, and a nipple port for a breather tube from the valve cover to the intake arm, similar to B18C VTEC engines. OBD2 valve covers did not have this port on it, and also no breather box on the block. Instead it had a hole in the valve cover for the PCV valve to fit directly into, with a tube from the PCV valve to the intake manifold.

So yes it will fit, but most likely your engine won't run right.

 

(non-vtec) It'll run right, just plug the PCV hole on the OBD2 valve cover, and you're done.

 

this is correct

 

WTF.

The PCV system on an OBD1 doesn't need to be touched when swapping over to an OBD2 valve cover, so there's no issue with this.

Second, you do not need to run a hose from the OBD2 PCV valve to the intake arm.
There's already a tube for that.

So it goes back to my first answer again.

Yes you can use an newer style OBD2 LS on your OBD1 LS.
Just plug the PCV hole on the OBD2 valve cover, and you're done.

 

agreed. the obd1 valve cover does not have a pcv valve in the valve cover, so by swapping to an obd2 valve cover with a plugged pcv hole, your not changing anything. the pcv system stays exactly the same as it was before you swapped to the obd2 valve cover.

 

I never said to change the OBD1 PCV system. I said to leave it in place. Reading ownz both you guys.

However I forgot the OBD2 valve cover had both the breather port and the PCV valve in the valve cover. I thought the breather port went away with OBD2. post edited above.

 

i just put an obd1 valve cover on obd2 and its fine

 

so just take the OBD1 PCV tube that goes to the intake arm and plug that tube into the PCV valve on the OBD2 V/C?

 

no, the PCV hose doesn't go to the intake arm.

You hook up an OBD2 valve cover on an OBD1 engine the same way as the OBD1 valve cover, but you just plug the PCV hole in the OBD2 valve cover, since your OBD1 engine has the PCV valve on the back of the engine block.

 

it will help if someone will post a pic. you guys got him confused.

 

lol how hard is it the hole on the valve cover where no bolt goes in. plug it with some high temp hose and high temp silicone