874runner

So, yesterday i was working on my friends 94 4runner with the 3.0 v6. took the timing cover off and it turns out the head gaskets weren't the only thing wrong. look at this timing belt! huge cracks throughout the whole thing! how lucky can you be?!

toytech76

Ive seen them as bad and even worse. Good thing they arnt interference motors

874runner

They aren't? Huh i thought it would bend valves if it broke.

Trustyrusty

Actually they ARE interference engines, thats why every time a timing chain shoots the pooper you bend the hell out of your valvetrain..

keithdphan

22r is interference type engine but dont think the 3.0 is.

ernest t bass

22r & 22re - Interference
3.0 v6 - not Interference

thats what i was told

Learned ones, please chime in

FredTJ

Don't know about the 22R, but, for sure, the 3.0's are NOT interference engines.
Break one on a 3.0 and all that happens is that it leaves you stranded somewhere.




Fred

thook

22r/re's = timing CHAINS are interference....trust me on this!

3.0's = timing BELTS are definitely NOT interference. There's several threads wherein belts broke and peoples went nowheres. Motor was fine, though.

toytech76

Exactly. 3.0's you can spin around as much as you want without the tbelt and not hurt a thing. 22r is a different story

thook

Yeah....I remember a thread several months ago I was chiming in on and everyone was tryin' to figure out why the motor wouldn't fire. "Oh, it could be this! It could that! Test, test, test!"....lol! Then, the guy realized the belt had broken! Talk about a "DUH!" moment....

874runner

lol i knew the 22r was interferance my chain is slapping like crazy on mine i really need to replace it before it breaks lol

Jay351

Hehe, my timing belt actually broke.

I almost sold it for 500 bucks because I couldnt figure it out!

Mine was worse then that, strips of the teeth sheered off!

gsb15

from my exprience the 22r is interferance, however you can get lucky, i had a chain break at low rpm and the cam stopped in a completly nutral position, where all the valves were out of the way. i also had one break at 2800rpm......and wasnt so lucky

thook

Jay.....come to think of it, I believe yours was the thread!

Jay351

hehehe