Timing belt change

[Jon_G]

Wonder what they use on the V-Tec Engines at Honda ?

All B-Series (B16A, B16B and B18C) use a belt.

All K-Series use a chain.

Honda also use chains on their diesel engines. I have an Accord with a 2.2 i-CTDi engine and the chains (cam and oil pump drive) need replacing, as one or both are becoming quite noisy. It isn't uncommon for this situation to develop into a catastrophic failure, so I am a little anxious! Replacement will cost more than the cars worth though.

I don't think the MR2 is quite this bad?

[Joesson]

For me the timing chain/ belt or other has been the item causing most problems.
Firstly with a 1956 VW beetle with over 100,000 which had a
"characteristic" ticking which preceded the shearing of the 3 rivets that join the can shaft to a timing gear on this engine. No drama, I parked at work and when I went to move the car it wouldn't start whh took some finding out as all basic checks for fuel sparks etc were OK. The rocker covers on this engine are each held in place by a clip so easy to check what is happening when the engine was cranked, nothing! The engine turns but the rockers don't  move.That cost me a replacement engine.
Some years later I parked my Fiat 1500 which had a timing chain rattle. Went to move it, wouldn't start.
This time I was in the AA who I called. You need a new condenser was the diagnosis. This I got with the help of work mates. No help. As previously, fuel and sparks etc were OK. I removed the air filter (from the twin choke Weber, those were the days!) which was rather large, to get a better view and when the engine was cranked I noticed blowing through the carburetor!The timing chain had slipped around a worn sprocket and the valve timing was completely wrong. Fortunately no other damage and a new sprocket and chain cured the problem.
My final experience was with a Ford escort 1600 with a cam belt which lost its teeth when starting it up. The tinkling noise is onethat you do not want to hear. This cost me a new belt and one or two valves but did a decoke while at it.I have heard of valves going through piston heads when this has happened at higher revs.
The belt had given no indication of imminent failure. I subsequently found out that the car had been clocked (mileage reduced) which meant that the belt had far exceeded it's design life.
You will note that the timing chain was the least problem to fix for me. However, this was because they're was clearance between the piston head and the incorrectly moving valves. I don't know whether our MR2 engines have such a clearance. If so it would much reduce the risk of damage occurring from a loose/ worn chain or worn sprocket. If no clearance then a serious situation could arisee but only at extended mileage and after some audible warning which, in my experience shouldn't be ignored.

[Wilderman]

I think the only time to worry about timing chains is if you've let it run low on oil for a while. I had a primera GT that has a chain, I gave it to my brother & its still running fine with 168k+ miles on it. Bit rattly when first started though.

[Call the midlife!]

Just reading this with interest bearing in mind the 104k car I'm buying.
In some cases products with a "lifetime guarantee" only need last for a short time, once they fail they're classed as having done their job, so to speak.
So if the chains are deemed to be guaranteed for the "life of the engine " then if the chain breaks and lunches the engine it could be said it had done it's job. Lived as long as the engine, wether that be 5k or 50k...


Sent from my iPhone using Tapatalk

[beavisrules]

reminds me of a William Shatner & Henry Rollins song
I Can't Get Behind That -  m https://www.youtube.com/watch?v=W3PoEwRi5XQ m


ROLLINS: Lifetime guarantee?
BILL: Who's lifetime? Not mine! I haven't that much time left. Let's make it yours. Everybody's got a longer life than me!