00 civic si header install its not fiting we dont know drop it from the bottm or top?

 

What do you mean? If you mean what I think you do, install it from the bottom of the car. Slide the top (part that mates with the engine) in up through the bottom.

Hope this helps

 

i done once and i put it in through the bottom. it seems too hard from the top

 

What header are you installing? If it's a 2 piece you can install the 4-2 portion from the top then go underneath and bolt up the 2-1. If it's a 1 piece then jack the car up, support it with jackstands, take off the splash guards to make it even easier, and slide it up. Then go back out and bolt it on. helps if there's two people so you don't have to go back and fourth. good luck

 

its a 4-1 header

 

i usually just go from underneath, but slide the header in at an angle and then straighten it out

 

You have to go from under the car. Put it in on an angle and work it up, its a little tricky but you can get it. I've taken mine off and on by myself a bunch of times. Just watch for the clutch master cyl and you'll be