Ary rust areas to look out for?

 

I don't have a rear heater in my 87 SR5 either. Maybe that was only for the first gen 4Runners.

For Ronnie: The 'E" stand for Electronic fuel injection. Mine has a big 22-RE plastered on the valve cover. Just plain "R" means carb.

22 stands for 2.2 liter, so I assume a 20R is a carbuerated (dang it,I can never spell that) 2.0 liter engine.

 

Every engine in the 20 - 22 line has the engine code on a sticker on the front of the valve cover.

The 22 has 2.2L and the 20 has 2.0L. The 20s have a better flowing head with larger valves. The 22s were made with a more powerful bottom endand a head that has less air flow. The power and displacement was increased in the 22 series but with some upgrades the head limits power compared to the 20s. The 22s can take high boost pressure if they are turboed but the 20s can only handle low boost. The main difference is their strengths. The 20s have a stong head and the 22s have a strong block. The best setup is a 20 head on a 22 block.

 

How difficult is that mod? Sounds intriguing.

 

Its not really hard its just a straight bolt on deal. You have to use the 20 headers and intake manifold but everything else fits up like stock. I was planning on doing the frankenstien later this year (when I can afford to replace most parts in the engine for a turbo). I see another write up coming on lol.