Hey just after a bit of info. I have a sx seca with the 4age 16 valve small port. Does anyone know what compression they are ment to have when they come out stock? also is there a way test what compression your engine has ?

if anyone knows something about this and can help me that would be awesome. thanks butty

For the first question, the words "have you done a google search yet" is my answer, because thats where your answer will be, without having to resort to asking that question here.

 

Secondly, yes there is a way to test compresion. It's a guage available at most good automotive parts stores. Ask for a compression tester. It screws into your spark plug hole, turn the engine over a couple of times and Bob's a relative.

http://www.ke70.com/forum/index.php?showtopic=201

 

Go to the link in that thread and have a good read, You will learn a few things. :)