Bluefire Posted November 13, 2010 Share Posted November 13, 2010 Hey guys, i'm about to order a PRC radiator for my 280zx with rb25det swap. I was just wondering what inlet and outlet size you ran. From my measurements, 1-3/8" would be perfect but PRC can only make the inlet/outlet in 1/4" increments. So would 1.25" or 1.5" be better? Quote Link to comment Share on other sites More sharing options...
pat1 Posted November 14, 2010 Share Posted November 14, 2010 My prc is 1.5 upper and 1.75 lower. Quote Link to comment Share on other sites More sharing options...
ZT-R Posted November 18, 2010 Share Posted November 18, 2010 (edited) would -16AN work for upper and lower? or should i do -16an on top and -20 on bottom? -16 hose has an I.D. of 1" -20 hose has an I.D. of 1 1/4" or should i go -20an on both? Edited November 18, 2010 by boostedh23a1 Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted November 18, 2010 Share Posted November 18, 2010 I did -16 top & bottom with out any issues, flow wise, on my double pass. I'd prolly do -20 on my next one.... Quote Link to comment Share on other sites More sharing options...
ZT-R Posted November 18, 2010 Share Posted November 18, 2010 ok, nevermind that pm from earlier Quote Link to comment Share on other sites More sharing options...
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