Timing Chain at 112K Miles
09-11-14, 08:11 AM
#16
Lexus Champion
VVTi does NOT change valve lift, only cam phasing. Also there is no definitive info that states VVTi equipped engines namely the 1MZ-FE are interference.
09-11-14, 08:51 AM
#17
Lexus Test Driver
That doesn't make sense 'lose braking + stopping'.
- I had a cambelt break on a major motorway with no shoulder, middle of a HUGE high bridge/flyover. Probably the worse place ever to have that happen. I was doing 100kph at the time.
The engine simply stopped running. The car kept rolling, wouldn't restart and the starting sounded odd 'like a free run'.
I simply rolled on, with my hazards on, and pulled over when I had a chance after the bridge, no drama. Got a tow truck home. Fixed the car for like $200, and it was fine.
- I had a cambelt break on a major motorway with no shoulder, middle of a HUGE high bridge/flyover. Probably the worse place ever to have that happen. I was doing 100kph at the time.
The engine simply stopped running. The car kept rolling, wouldn't restart and the starting sounded odd 'like a free run'.
I simply rolled on, with my hazards on, and pulled over when I had a chance after the bridge, no drama. Got a tow truck home. Fixed the car for like $200, and it was fine.
If you live in the city, where there are vehicles 10 feet in all direction.
When your engine stops, your car can roll, but there is no power steering and no vacuum assisted braking.
Bare in mind that no one will let you change lanes in the city. You slow down, thats your problem.
There is a very high chance your vehicle might not make it to the shoulder....
09-12-14, 11:34 PM
#18
Lead Lap
Actually I live(d) in New Zealand (NZ), (at that time) the city I spoke of was Auckland City, which had a population of around 1.6million, the bridge in question is viewable at this link:https://www.google.co.nz/maps/place/...!3m1!1s0x0:0x0
In New Zealand, if I put on my brakes on the motorway, the person behind me will too, and the person behind him too. Our law states that if you hit someone from behind you are automatically at fault. because "you were following too closely" you will also quite likely automatically lose your license for 3 months (careless driving). Which can seriously affect your insurance. (we are not required to have that though).
Whether or not you have powersteering, and vacuum assisted braking does not affect the operation of either of those things. If the engine is not running, they still work, just not as easily.
But, I'm 270lbs, 6ft, 10% fat, so if something doesnt want to work I make it work, or it breaks :P
In New Zealand, if I put on my brakes on the motorway, the person behind me will too, and the person behind him too. Our law states that if you hit someone from behind you are automatically at fault. because "you were following too closely" you will also quite likely automatically lose your license for 3 months (careless driving). Which can seriously affect your insurance. (we are not required to have that though).
Whether or not you have powersteering, and vacuum assisted braking does not affect the operation of either of those things. If the engine is not running, they still work, just not as easily.
But, I'm 270lbs, 6ft, 10% fat, so if something doesnt want to work I make it work, or it breaks :P
09-13-14, 05:33 AM
#19
You are absolutely correct. Steering and brakes will both work with the engine dead but will require more effort. It never ceases to amaze me the total BS people spew out on the Internet.
09-15-14, 10:12 AM
#20
Lexus Test Driver
Guys, you have to learn on how to read.
I said "You will lose power steering and vacuum assisted braking."
I didn't say you will lose steering and braking completely.
What I said is that you will not be able to brake and steer as easy / effortlessly.
In the perfect world, every driver should be 100% sober, tires in good condition, following a safety distance behind, not using their cell phones, not speeding, etc. But we live in the real world. Accidents happens every minute!! I don't know why you want to risk your life or someone's life because your timing belt snaps and you are stopped in the middle of the highway.....
I said "You will lose power steering and vacuum assisted braking."
I didn't say you will lose steering and braking completely.
What I said is that you will not be able to brake and steer as easy / effortlessly.
In the perfect world, every driver should be 100% sober, tires in good condition, following a safety distance behind, not using their cell phones, not speeding, etc. But we live in the real world. Accidents happens every minute!! I don't know why you want to risk your life or someone's life because your timing belt snaps and you are stopped in the middle of the highway.....
09-15-14, 03:45 PM
#21
Lead Lap
Your correct, we did jump down your throat a bit.
But, if your timing belt breaks you will not suddenly stop, you can easily pull over at highway speeds. I know, I did.
But, if your timing belt breaks you will not suddenly stop, you can easily pull over at highway speeds. I know, I did.
09-15-14, 08:47 PM
#22
you may not be able to pull over smoothly/safely like you said if it is an interference engine when the belt snaps. yours was an non-interference engine so there is no piston damage involved. and worth the risk for you.
09-15-14, 08:50 PM
#23
you can contact lexus customer service and they will provide you a definitive answer that vvti engines are interference type.
09-15-14, 11:45 PM
#24
Lead Lap
IF, it is an interference engine the damage will be done the moment the belt snaps.
09-16-14, 07:47 AM
#25
12 or more years ago, I had an Audi V8 (still have it) and the belt skipped (not broken). It bent some valves. the car just ran a little rough under 2000rpm but otherwise wasn't noticeable. I drove it several hundred miles home before I even took it to be diagnosed. That little encounter set me back over $4k I think; and that was way back when the US dollar had some real value.
So I'm particular about belt issues/timing/safety.
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