Now it is out and known, Here is the latest jalopy.

OK, cheers.

OK, cheers.

Switching to pedantic mode... You mean the pistons don't hit the valves. :-) Mike.

That's an engine where the valves have no possibility to hit the piston in case of cambelt (or camchain) breakage.

On an interference engine and if the connection between camshaft and crankshaft is lost, the valves in open position will stay open (the camshaft stops turning). As the piston comes up( as the crankshaft rotates), it will collide with the valve.

The result of that in best case is some bent valves, at worst bent valves and broken pistons. In last option it becomes cheaper in most cases to change the engine.

Tom De Moor

The Japs use a different and Narrower FM radio band, the normal only=20 overlap is Radio 2, so a Band expander allows the JDM headunit to pickup=20 the UK stations by widening the waveband it recieves.

--=20 Carl Robson Audio stream:

The GT4 was a similar age lump. And was the same. The Later More powerful and I think VVTi engines are interference hence=20 why the cambelt went from 90-100k, down to a rigid 64k.

--=20 Carl Robson Audio stream:

That's what I said - unless you think it likely this can happen without damage.

Ah, getcha.

Ah, getcha.

The Japs use a different and Narrower FM radio band, the normal only overlap is Radio 2, so a Band expander allows the JDM headunit to pickup the UK stations by widening the waveband it recieves.

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but sadly by f*ck all so you lose a few stations, my MR2 was rare in that it had the original toyota double din CD player in with a waveband expander installed. wasn't a bad unit and i did like the totally stock condition of my car but it's lack of MP3 ability got to me eventually

MR2 3SGTE was the same (also GT4 used the same engine) that was meant to be non interference. well unless you installed a 2.2 stroker kit and had it break as happened to some poor soul on imoc years ago hehe

sorry to dumb to get that i take it they aint cheap to run :)

Not quite. I did say I was being pedantic. Valves don't hit pistons. Pistons hit valves, or don't hit in the case of a non-interference engine. Mike.

Ah - right. Of course this assumes the camshaft stops *instantly* the drive breaks. And nothing stops instantly. ;-)

Yeah - they sup fuel like nobodies business! I had a 5.7 litre Impala once. It wasn't what you'd call economical!

No, but if it's still moving then the piston won't be anywhere near the valve because it's on that part of the timing. There isn't enough mass in a cam shaft or it's pulley to allow potential energy to keep it spinning for more than a few ms. Therefore I'd be willing to bet that the piston would be the one doing the hitting ;o)

You are right but we - yeah I know: Belgium- often say when a car crashes into a pole or a tree , that the tree unexpectely crossed the road without looking.

My explanation to mom after my first and -uptill now- only major crash: "Oh, just some dents. Nothing worse."

Too bad that next day the car's picture was at page 5 of the local newspaper: "Driver rolls car 5 times, comes to standstill on the roof

Mind you: there were indeed some dents...

Tom De Moor