No... they all need to be changed, the're simmilar to 22R/E motors and usualy around 150k they need to be looked at and probably changed. You may want to look into some new chain guides too at the time of changing. Cause alot of T-Chain failoures are guide failures and the pieces of the worn guide (causing excessive chain slap/flail wich wears a hole in the T-chain cover) end up taking out the chain as well. The chain also stretches over time. Older 22R's have the best of all because they have the double row chains that are virtualy bombproof..
Originally Posted by Bergger
Luckily for us, I don't belive that Toyota's motors are "interference motors" meaning should the T-chain go the valves don't get smashed into the pistons. I was told this by Ted of Engnbldr fame and his brother who put my 22RE in my toyota. Sure enough, I had a freak break after only 300 miles and the motor was fine, just needed a new chain (free of course)
PM DaveinDenver here on the boards, he knows so much about Toyotas it's really crazy. You could also try talking to Rodger Brown of 4Crawler fame, he's a Toyota guru of sorts as well.
David B King: EMT-I / WMI - Wilderness EMT, FF1
Neck Healing...let the FUN BEGIN AGAIN!!!!
-89 Toyota 4Runner dubbed "Project 4Rescue"
Stock 22RE, 5spd, 33x10.50 BFG At's, Marlin rear Bumper, OME Dakar / BJ Spacer lift + OME Shocks all around (and the SS),4.88's coming soon...
2002 Norco 4x4 Romic T2 Marzo 55 -Soon to be replaced by a Trans. Bottlerocket or maybe a Spec. SX trail....