I have searched for this all day and cant find an actual answer... If i have a 90-93 integra radiator from Mishimoto will it fit in my 90 civic si. If so what do i need to do.If not what other radiators will mount right up

 

toss it in...

Hope you got a metal top

you may have to hammer in one of the corners just a little bit for the hood to close

 

Here are some write-up's I'll be using when I install mine:

http://www.performanceforum.co....html
^Thank Wes V for that one, he's a member here on HT. Alot of other good how-to's on his performance page as well.

Here's another DA radiator how to:
http://honda.hybrids.jp/tech/h...shtml

Hope this helps, let me know how it goes, since I'll be doing the same thing soon.

 

It'll work fine, but the coolant flanges are a little bigger. Hard to get the hoses on, unless you have a b-series and just use the b-series hoses.