anyone one with any knowledge or input on this toyota motor, havent seen much of them are parts harder to obtain for them?

 

i myself have never heard of a 21r, always thought there was just a 20r and 22r

 

ive never seen and or heard of a 21r because they dont make one and never have

 

wrong a 21r is a crate motor from japan came stock with duel carbs looks like the same block aS the 22r but uses different head

 

Google is your friend.

http://en.wikipedia.org/wiki/Toyota_R_engine#21R

"21R
The 2-valve SOHC 2.0 L (1,972 cc) 21R was produced from 1978 through 1987.
Cylinder bore was 84 mm (3.31 in) and stroke was 89 mm (3.5 in).
Output in 1978, constrained by emissions, was 105 hp (78 kW) at 5,200 rpm and 116 lb·ft (157 N·m) at 3,600 rpm. Air injection and California emissions equipment for the 21R-C (1982–1985) dropped power down to 90 hp (67 kW) at 5,000 rpm. The air-injected Japanese version, the 21R-U, produced 105 hp (78 kW) at 5,200 rpm and 120 lb·ft (162 N·m) at 3,600 rpm but dropped to 101 hp (75 kW) at 5,400 rpm and 114 lb·ft (154 N·m) at 4,000 rpm in 1986."

 

 

when you say toyota motor that means stock from the factory to me a crate engine isnt stock from the factory. and im just gonna say that stickers are real easy to make. my father who is a toyota master tech and has been for almost 40 years says that these engines were not stock, u would have to buy the head seperatley from toyota.

 

They came from the factory in several different models overseas.

 

over seas is not in america so we dont really see them and ethier way it would still be hard to atleast get parts for the head

 

21R is a very common engine in the US...

 

As far as I know they didn't come factory in anything over here, but the research I've done points to them being a pretty common 'low mileage' replacement engine import from Japan. I believe the quote I posted above meant 'never imported into the US' as in, in a vehicle from the factory, because there are definitely a few still around.

My searching for 21Rs has also led me to quite a few Chinook RVs for some reason...wonder if there's a connection there.

 

it sounds like u could just put a 22r head on it sense the bottom end is a 22r and it would make more power

 

the 21RU was part of the Japanese motor exchange program. the parts are next to impossible to get in the US. I had a head blow on mine and it was easier and cheaper to just switch back to the 22R.

 

THIS is correct.

The 21R was NEVER OFFERED in the USA in any vehicle sold on the road. Plain and simple, it never existed in production vehicles bound for US soil.

The 21R-U and 21R-C engines ARE a real Toyota engine, available overseas as well as in Toyota Forklifts. When you order a crate engine from one of those godawful Japanese crate engine warehouses *shudder* they send you a 21R engine. It is available with the round OR the square style valve cover, which helps narrow down its exact year.

They are NOT a dual carb system (though I am sure some company somewhere made such a manifold)

Also, this thread died in April