Well so far my cheapest and most affordable swaps and most local to me is the 5mge which I can do with minimal fabrication.
It's not a 3rz but by far the easiest swap to do.
Also alot of good swap info here too:http://www.4wd.net.nz/suprasurf.htm
I did find a cool site with aftermarket motor parts for the 5mge http://www.rabidchimp.com/index1.html
The engine I am looking at is the more powerful 86 5MGE
Late 5M-GE Power Output (1984-86): 161 HP @ 5600 rpm // 169 TQ @ 4400 rpm
Early 3RZ-FE Power Output (1995-98): 150 HP @ 4800 rpm // 177 TQ @ 4000 rpm
so as far the power difference it's not much less than the 3rz just the powerband is at a different place.
So it would be getting slightly rebuilt too so cost wize it is going to be higher but I am looking at less than $800 for the whole swap.
The 22r I have I know a guy who needs one so I could get his help in pulling the motor and wiring up this one in exchange for my old motor.
It all depends if I decide to keep the motor stock with new bearings and seals or to run oversized valves and .030 pisitons in the 5mge which would up the cost for addtion parts and machining. I can do most of the rebuild myself including the honing of the cylinders and rings and bearings. The head I could have sent off for the grind which would be the expense. The rebuild kit is around $200 with all seals. I would need the timing set for about $70.
Doing the mods would up HP but not sure on how much but it would make a noticeable difference.
I am already running 2/14 piping so that should flow pretty nice for this motor.
Kinda cool mod idea: 5MGTE http://geocities.com/aarongarney/5mgte.html
He didn't get bad results either.
From his site:
Before the turbo install, the car put down 129 rwhp, and 136 ft/lbs of torque. At 7psi, the car made 208 rwhp, and 232 ft/lbs of torque.
Also wheel hp is always substancially less than crank hp which is the rating most manufacturers give you when you look at engine specs.
So at the crank HP and Torque could be around 235hp and 255FT/LB's.
I am sure the motor life is reduced substancially though.
Pretty awsome though for older technology.
Also the general consensus and opinion is the 5MGE is less powerful but for a offroad truck it holds up better to offroad abuse than the 7MGE or the 7MGTE.
Also been noticing most of these yards that have the tacoma motors the truck is long gone the motor is in a warehouse with a hacked harness no ecu, no powersteering no alternator no belhousing of course.
I have been using my time off to look around at the yards and at motors.
I am not trying to defend the 5MGE just looking at the overall cost of the swap.
I am sure whatever choice I make has to be leaps and bounds in power differance than the 22r.
What gets me is no one has the actual motor weight's I looked all over for the actual motor weight specs found nothing online.
I am sure yes the 5mge is heavier than the 3rz since it has 2 more cylinders and a bigger crank.