Is the timing belt system in the 2000 3.5L TJ Magna a interference or a non interference design? If the timing belt snaps, will the car will just stop without damage or will damage occur?

Thanks

Is the timing belt system in the 2000 3.5L TJ Magna a interference or a non interference design? If the timing belt snaps, will the car will just stop without damage or will damage occur?

Thanks
damge might occour

Is the timing belt system in the 2000 3.5L TJ Magna a interference or a non interference design? If the timing belt snaps, will the car will just stop without damage or will damage occur?

Thanks
Considering that a timing belt tells when the valves should be open or closed (down or up), it's pretty much a case of how much damage will occur and not will it occur.

You don't risk having a timing belt snapping. Why? Try valve, head, piston and block damage posibilities. i.e. you might as well buy a new engine.

Considering that a timing belt tells when the valves should be open or closed (down or up), it's pretty much a case of how much damage will occur and not will it occur.

You don't risk having a timing belt snapping. Why? Try valve, head, piston and block damage posibilities. i.e. you might as well buy a new engine.

I suspect that is the case. Just that I heard other people say that Toyota uses non-interference timing belt design that does no damage if it snaps. Was wondering if Magna is also the case. Thanks for the info.

Its not the belt which causes this, its valve clearence from the piston crown. Without huge flycuts in the piston, or very little lift, no high comp motor now days will be a free spinning motor unfortunatly, 6g's included.

This thread makes me very, very nervous.

do your timing belt at 60,000km then. I know I do.

Better safe than really, really really sorry I suppose!

do your timing belt at 60,000km then. I know I do.
Although I hear the magna engine will break if the timing belt goes, that may be over doing it as it's a fairly expensive exercise. These things are recommended to be changed every 100,000km.

I'll say the engineering would be very much over done and have probably been designed for 200,000km to 250,000km for something this critical...... or maybe I've put too much faith in engineers?

:P

The timing belt snapped on my cousin's 98 TE Sports. This in turn caused the pistons to completely punch through the engine. Not pretty. Not Cheap. Not likely to happen if you change it when recommended.

Its not the belt which causes this, its valve clearence from the piston crown. Without huge flycuts in the piston, or very little lift, no high comp motor now days will be a free spinning motor unfortunatly, 6g's included.
I guess the thing with the 6G72-S4 engine (from what I'm told) the pistons are dished and they aren't really hi comp anyway so it may not be so bad but you never know. I wouldn't risk it.

Typically it's recommended at the 90k and then they want to do it at the 105k.

What driving factors decide whether the belt can live a long life or not? Is it shorter life if you do hard acceleration all the time?

I took my car in for its 5th year service at 62k. The Mitsu techie said it can wait till the next service another 10k away. I am currently on 64k. Should I be worried?

What driving factors decide whether the belt can live a long life or not? Is it shorter life if you do hard acceleration all the time?

I took my car in for its 5th year service at 62k. The Mitsu techie said it can wait till the next service another 10k away. I am currently on 64k. Should I be worried?
Not really are there any signs of cracks on the belt but usually it get changed at every 100,000kms and the less hard acceleration will make the belt last a bit longer less stress on the belt.

there is no force on the cams other than springs, which dont increase with rpm, so in theory there shouldnt be much change in belt longevity if you thrash your car.

i do mine more often because my motor is out often enough and its a pretty easy job to do on my car.

make sure the tensioner/s are replaced with the belt too guys.

No need to worry. Get it done as when the service books says, around 90k. The only thing you need to worry about is the cost!

I hate my dealer (Lander Mitsu in Blacktown NSW) so I went to Ultratune. I was quoted $950+ at Lander. F**K that, got it done for $700.