Can someone please tell me if a 2.0L engine from a 1987 mazda B2000 (2x4) would bolt up to replace a 2.2L engine in my 1989 Mazda B2000 (2x4)? I plan on doing this swap soon...so immediate replies would be greatly appreciated.

100% compatible.

Have you done this type of motor swap before?? Just wondering is there any modifications that must be made to this? Are the back of blocks the same to bolt up??
Thanks

Actually, the blocks from a B2000 and a B2200 are identical. It would be a direct swap.

everything is the same except for the timing i just did one to mine two weeks ago

I don't know why you would want to swap a 2.2l for the 2.0, you have many more options with the 2.2l and more power.

Well depends on how u look at it ,a 2.0 will outrev a 2.2.A square motor (bore and stroke identical)or a motor where the bore is bigger than the stroke will rev higher safely than a stroker I.E. 2.2 liter
the blockz are the same only difference between the 2 is the longer throw crank and piston rods in the 2.2.Bores are the same.

So get a throw crank and piston rods from a B2200 engine and you have turned your B2000 engine into a B2200? It's that easy?

Hmm interesting. There are a few differences in timing and the water pump, small stuff like that. The B2200 Timing system is bigger and the water pump is on the left instead of the right. I think I mentioned in a previous post that the F2 has a stroke longer than many V8s. In any engine the longer the stroke you go the more low end torque you have and the shorter the stroke you have more high end rev. Good example of this is try taking a crotch rocket off road and try racing a dirt bike. Thats essentially the performance difference between most 4 cylinders and a mazda. Someone correct me if I'm wrong but the same difference goes for cams, more lift and shorter duration gives you lowend and smaller lift with longer duration gives you higher end.

The block is the same design as the vernerable FE 2.0 and F2 2.2 as found in the 84-92 626 and MX6 and the 88-92 Probe. This block has 11mm between the cylinders which means a much larger overbore can likely ocure.
The 2.2 F2 block is 14.5mm taller than the 2.0 FE block. This height difference is made from the 8mm additional stroke (86mm vs 94mm) and 6.5mm longer rods (152mm vs 158.5mm). The crank journal and main diameters are identical. so ... The cam belt from the FE3 will not fit a 2.2 block because of the length difference. You would have to source your own from some other application. 14.5mm is just too much to shave from the block deck .
A 2.2 crank will fit in a 2.0 block if you determine how to remove 8mm from the piston height and/or compression height (pin height). There is only 7mm from the top ring groove to the top of the piston, even leaving say 3mm for integrity leaves only 4mm from shaving the top of the piston. You would have to find an additional 4mm which leaves custom pistons with wrist pin height (relocated oil control ring groove height to accomidate) as the only source. (A DOHC Toyata Supra belt can be used to make up the taller engine height) This is an excerpt from the Randy Stocker page that i missed,my bad. Peace,Ratt.
blokkz arent identical crank could be used but with quite a bit of moddin.

If I'm right that supra belt is only for if you try converting to a DOHC head. I think I read somewhere that if you do a kia sportiage head swap you need the supra belt, and only one of 3 fit.