Im considering purchasing this block and i had a question. There is a black rectangular rubber object on the back of the block to the right of the oil filter. Im not familiar with what this is. The engine is from a 91 integra. I will try to post a picture of it, but i have never posted a pic before, so bare with me. Thanks.
Devin
block1.JPG

 

It is a PCV breather tank. On line goes from the block to it and the other line goes to a nipple on the intake manifold.

 

How come my 2000 integra ls doesn't have one of those? Did they engineer something different over the years?

 

thats odd. i thought all of them had it. im gonna plug the hole for mine, then remove the other two plugs and use my own catch can setup. there good for factory use, but not to good for boost applications

 

Are you sure? My 96 GSR has one. Maybe they have another way of filtering out blowby vapor...:dunno:

 

I think all years GSR had that breather box on the block. Sometime ('97?) the LS switched to a baffled chamber under the valve cover.