Well, my radiator rusted out and threw up all over the road. I'll be replacing my radiator in the next week. I have a 90 Civic Si with a Y8 head.
I originally cut up the stock upper radiator hose to fit, but I want to use one that will fit better.

Which is the proper hose to use? I tried searching all the sites and found one site that said to use the one for the A6, but that's the one I used and it doesn't fit very well.

 

i would think any d series with a y8 head would be "cut to fit"....if all else fails, i know auto parts carries flex hose that can be shaped to fit, then cut...good luck