miles till i should change timing chain?

[jer925]

just wondering when it should be changed to saftely avoid expensive bills!!!

[Griffin]

Whenever it starts to make noise because the slipper tensioner is at its maxiumum stop.

Griffin

[00 scrub]

Griffin could you please explain how that happens?

[Raymund]

If I may,

It can either happen due to chain expansion or chain guide wear. Both can depress the chain tensioner overtime until it cant keep proper tension.

yes chains expand over time and theres a special tool that can measure chain wear.

though, I highly doubt chain wear will be an issue with the celica. it has true "roller" chain links and is very well lubricated.

[autxr]

What the others have said is correct.

The short answer?

Never.

Scott

[kuno]

I know I shouldn't believe a dealer but apprently the celica's chain will probably never be replaced because of wear and tear. My dad went crazy when he heard it was a chain and not a belt and said I wouldn't have to worry about replacing it.

[AsIaN_HoNeYs_GTS]

Originally posted by autxr
What the others have said is correct.

The short answer?

Never.

Scott

ditto. Yeah that's what I thought. Never.

-Carla

[Chris25NJ]

this is the first i'm hearing about this. I was under the impression it should be replaced at 60K.

[nxracer]

The "Timing Chain" should never need replacement due to wear issues. If one revs the motor to, say 10,000 rpm and it snaps it's NOT a wear issue.

[Da Kine Guy]

Toyota Corona - 20R Engine - Original Timing Chain - 190k miles :D

[Griffin]

Originally posted by Chris25NJ
this is the first i'm hearing about this. I was under the impression it should be replaced at 60K.

Nope thats belt drive. Chains never need to be replaced unless they wear to the point where they have to be for damage/wear.

Griffin

[gto78]

I'm glad they put a chain in the new engines. My 94 celica had a belt and i was always worried about it drying out, or breaking, or getting hot in traffic and loosening up. I made sure to have that one changed real close to 60K miles, and they changed the tensioner too.

[Chris25NJ]

yeah this is sweet. I thought we had a belt, not a chain. My last car was a 95 Talon TSI AWD, the timing chain went exactly at 60K, and pushed a rod through the engine block. Wasn't pretty.

I haven't gotten any Toyota services done (do them all myself), but i'm gonna get the 60K done, and have them inspect the chain anyway to be safe.

[Da Kine Guy]

The only reason the Celi has a chain is because of the VVT-i. It's oil controlled and you can't have oil spilling on a timing belt, that's a big :nono:. If we didn't have that we would definately have a belt, they are cheaper :)

BTW, the only reason the old 20R (and probably the other R blocks as well) has a chain is because that was back when Toyota was going out and copying the best engine designs. The R is actually a copy of a Mercedes engine of the time. The old 80's Land Cruiser was a copy of a Chevy block as well.

[Griffin]

Originally posted by Da Kine Guy
The only reason the Celi has a chain is because of the VVT-i. It's oil controlled and you can't have oil spilling on a timing belt, that's a big :nono:. If we didn't have that we would definately have a belt, they are cheaper :)

BTW, the only reason the old 20R (and probably the other R blocks as well) has a chain is because that was back when Toyota was going out and copying the best engine designs. The R is actually a copy of a Mercedes engine of the time. The old 80's Land Cruiser was a copy of a Chevy block as well.

Yeah the original Cruiser straight 6 was a GM block. Noisy little bastard and not TOO powerful but it got the job done.

Your wrong about the Variable valve timing though. When Toyota introduced it on the 2JZ-GE and the 1UZ-FE BOTH were belt driven and had VVTi. The VVTi version of teh 1MZ-FE is also belt driven. And I THINK (not 100% sure) that back in 98 when the introduced the 1ZZ-FE on the corrola it was NOT VVTi, but WAS chain driven. They made the change to be competitive with the cost of ownership / maintenance figures and powertrain warranties the competition was pumping out.

Griffin

[larryd]

yeah all cars should be a chain.. life would be easier :)

[Raymund]

One more reason.. Timing chains are more compact. I heard somewhere compact size was one of the main priority of the 2ZZ during design.

[larryd]

i woulda thought itd have something to do with high revving to keep a belt from slipping at that kind of RPM.. chain is just more durable it seems

[laz_10]

my car engine makes a metal rattling noise, could it be the timming chain or something else?

[t2000gts]

i've seen integra type R(s) rev to 9000-10,000rpm, i'm assuming they're all on timing belts, what's keeping our own timing chains from handling those kinds of engine speeds?

[Griffin]

Originally posted by laz_10
my car engine makes a metal rattling noise, could it be the timming chain or something else?

It COULD be, but much more likely its a heat shield rattle or the drive belt tensioner.

[GINYU-GTS]

just a quick question for some of u, my car is still in the shop and when i try to start it, the car rpm will drop unless i keep reving otherwise it with eventually stall, dealership working on the car believe it might be the timing chain b/c of the vvt-i....can anyone confirm this? also when they put my car together, they couldn't find reverse on my car! WTF!!! they have to look into that as well...its been almost a month since i had my car =( any input would be appreciated...hopefully i get my car back soon... =