22re timing chains

[thatoneguy]

Was discussing the whole 22re timing chain thing with friends today, got curious. Anyone here ever had issue with their 22r/re timing chain? As some know, before '83 the 22r used metal chain guides and a double row chain, which was far more durable. The post '83 design uses plastic guides and a single row chain, whose guides can eventually break, eventually breaking the chain or causing it to slap against the cover causing other damage. But enough about the stupid history. Anyone had any failures or previous dealings with their chains or guides?

 

[hoe_nah]

I've never seen a dual row chain have problems...but I've seen those plastic guides on single row applications go out quite often

 

[the_dingman]

Never had the problem, but it's well known that the one real weakness of the later 22R's is the timing chain. It will stretch beyond what the tensioner can keep tension on, break the guide and wear on the water pump housing, eventually opening the water pump to the chain cover.

I replaced my chain a few years back and added a metal guide with a kit from engnbldr on eBay. No worries on it any longer.

 

[the great him]

Never had the problem, but it's well known that the one real weakness of the later 22R's is the timing chain. It will stretch beyond what the tensioner can keep tension on, break the guide and wear on the water pump housing, eventually opening the water pump to the chain cover.

I replaced my chain a few years back and added a metal guide with a kit from engnbldr on eBay. No worries on it any longer.

my father inlaw has this happen to him, hes a senior tech for toyota and it was on his 87 pickup, he had never replaced the chain or wanter pump ect in 24xxxx miles, he just wanted to see how long it would take for this to happen. it finally did and just mixed all the oil and water. pulled the motor and rebuilt it that afternoon and had it running again that night...

yes the dual row chain is a lot stronger, but you cant use them unless you have a special housing and gear set. if you can get your hands on a TC with the metal guides thats all youll ever need unless you are racing your truck competitively and have some sort of forced induction

 

[thatoneguy]

Yeah, mine was rebuilt 125,xxx ago and i was just figuring i should eventually take care of it if im keeping this truck long-term. I'm gonna be adjusting valves soon and ill be able to get a look at the guides while im in there.

 

[fourwd1]

Replacement metal TC guides are available from many sources if you look.

 

[thatoneguy]

Replacement metal TC guides are available from many sources if you look.

Yeah if they need to be done, that was the route i was planning