vds89 wrote:I have a s13 91 coupe and am curious how difficult it is to install a rb20...what would need to be change, fabricated,.....etc.
I always wonder, how do you rate "difficulty"? Like on a scale from one to ten? LOL.. How mechanically inclined are you? Do you do all your own work and install upgrades on your car? If so then you should be fine with help from a few friends, a cherry picker and an air compressor... But you'll only survive the RB swap if you take the time to research the swap and download and study the FSM.
Usually i'd just say "Search!!" also... But looks like I'm late to the gangbang today.. To be different I'll give you an idea of some of the hurdles you'll face, maybe it's enough to scare you off - or - maybe you'll scoff at the list and push on. You can custom fabricate all of it, or buy most of these parts pre-built online: cross member, motor mounts, sway bar spacers, modify the wiring harness, splice KA lower harness, splice dash wiring, recalibrate your tach, swap speed sensor from the KA transmission, modify/replace the power steering lines, custom/modify front mount intercooler piping, custom/modify dump pipe & downpipe, maintenance on the motor (water pump, timing belt + tensioners, head gasket, intake/exhaust gaskets, oil pan de-dented, exhaust manifold studs, new rubber hoses, new belts, thermostat, crank collar), radiator, radiator pusher fans, fuel pump, FPR...... The list goes on and on. Bottom line is if you're not willing to research the swap and motor itself, you'll never be able to get it done OR running well. GL!