ogreman

i bought a 1987 4runner about 6 months ago wit a 22re. the truck had a blown head gasket and a cracked timing cover....replaced the headgasket and the timing cover and timing chain...about a month after doing the work( about 1000 miles ) i went to the beach and played in the sand a little on the way home timing chain broke so i thought ok i jus didnt give the chain time to break in. replaced it yet again i did discover the harmonic balancer was not tightened properly so i figured that caused the chain to break fixed the truck again drove to work and on the way home the timing chain broke again....idk wat would cause another chain to break since this time everything was put back properly...any ideas?

TOYOTA 1

what brand of chain? does the cam spin freely with the chain off?

ogreman

it was an after market chain i wanna say rock timing or somthing along those lines and no the cam does not spin freely

TOYOTA 1

let me word it better, the cam should spin freely with the chain off, and with all the rockers backed all the way off to where there is no valves being opened. if it doesn't then the cam/cam journals could be junk. though i doubt that you would get two junk chains in a row. i would go with a o.s.k kit this time from here. www.22re.com .. way better quality.

has the motor ever been rebuilt? is the head factory?

ogreman

well the head is factory but it did warp when the head gasket blew so i had it machined and fixed...i think im gonna go wit a oem timing chain kit this time around but as for the cam i never checked it i didnt think it was needed

TOYOTA 1

the cam could be seizing up/ not spinning freely and putting extra strain the the t-chian.

just a thought. when you put the cam back in the head did you make sure all the caps were in the correct order and facing the rite way?

ogreman

hmm i hadnt thought about that and i sent the head to the head shop wit the cam still on it if i remember right all the caps were facing towards the front of the engine when i got it back