20R and 22R info wanted

[picklebill]

I have to get rid of my current RV (3/4 ton PU with a #2700 cab over camper) because I can't afford the gas anymore. I plan to get a small used Toyota based motorhome, or a small light weight trailer and Toyota PU to pull it. My question is - what are the differences between the 20R and 22R engines - reliability, power, etc? Any common problems? I am amazed at the size of some of the Toyota motorhomes I see with the Inline 4 engine and the owners all tell me that power is not a problem. This is my first post (new member) and any info you-all would care to share will be greatly appreciated

Bill

[Bakemono]

http://www.off-road.com/toyota/tech/...toy_motor.html

That should tell you just about everything you want to know.
Cap'n

[SovereignScorn]

That website makes me wonder, I've got an 88 22re, would I be able to put 20r heads and 84 dome pistons in, and keep the engine efi?

[80toy]

the 20r is used has been used in those mini rv things and small fork lifts in the past with good results. i have one in my 1980 4x4 pickup. the powerband on this engine is low, but it is wide. you can't feel any kick in it, but it doesn't really stop either. at low rpm it has more than enough torque for my truck, i am not sure about the added weight of a camper.

if you want to get one of the campers, i don't really think you have a choice other than the 20r. if you want a pickup to tow a trailer with i would go with a 22re. it is just as reliable as the 20r, but has more power and better fuel mileage. (my 20r gets 18mpg, but i don't have a 5th gear, so my freeway miles are at 3000 to 3500 rpm.)

edit: i have problem with the exhaust manifold leaking, and it seems to be a common problem. that is it though. it doesn't even burn much oil for a 25 year old engine.

--1980 20r, 110,000 original miles, good maintance, but sporatic instances of bad driving. i like to spin donuts n' shit off road, so it sees 4500-5000rpm every once and a(long) while. other than that i cruise around town at 2000rpm and on the freeway(30% of my time) at 3250rpm. for that kind of use it has held together very well.

hope that helps, ask if you need anything else.

[chronoti]

Originally Posted by SovereignScorn

That website makes me wonder, I've got an 88 22re, would I be able to put 20r heads and 84 dome pistons in, and keep the engine efi?

yup you need to get the block milled down a little, and the intake port mached to the 20r head. make sure you clay check the head when you do that or your gona blow the engine like hotwheelhammer did. also you can pm him questions about this he has build up a 20r/22r hybrid and has answerd all my questions about doing it.

[SovereignScorn]

Aright, thanks. Definatley dont want to blow it, dont have the money to buy a new truck... But is the hybrid any faster than a stock 22re?

[chronoti]

yes, it will have a better flowing head, and a higher compression ratio. they sell kits for this at lcengereering,com

[Bakemono]

Originally Posted by SovereignScorn

That website makes me wonder, I've got an 88 22re, would I be able to put 20r heads and 84 dome pistons in, and keep the engine efi?

I dont think so. The intake manifold from the 20R to the 22R/22R-E are not interchangable.
Cap'n

[Tercel GTS]

The 22/20r hybrid having more power may be correct if you have a lightweight vehicle. I had one of these setups in an 81 Trekkor and I'm telling you honestly I'm soooooooooooooooooooooo glad I sold it.
During the 5 years I had it I got to see the tops of the pistons more than 10 times and then got to hold them in my hands 3 times. The bare fact is the head bolts are too long for such stress. My compression with a stock piston was 210lb and after it was bored went to 225. I popped head gaskets, warped heads and shattered piston rings. To lighten the stress I swapped axle gears from 3.90 to 5.71. Can you say fun?
I could launch harder than a heavily modded mustang or camaro and leave'm for the first 100 feet. By third gear they'd run off, but I had already done my job. They had to push their 'muscle car' to catch a big ugly OD green 4x4 toyota, that's powered by a 2.4 liter. Sounded like a bike leaving the line cause the shifts were so quick.
I tell everybody I hear mention that hybrid the same thing I'm telling you. If it's going in an old school celica, do it! A truck? Hell no! If you decide to brush this off and do it anyway, when you're pulling it back down, remember I told ya!