Chinese Timing Tools

[kaiser]

The timing system on the V6 is like on any twin cam car. There are just two sets of cams, and they are driven from the front. If your car has never had the belts changed, it will have the factory setting.
Just watch the marks on the rear sprockets, and make sure you have the same setting after the change, and you will be fine.

That is the short and the long of it.

[kaiser]

Originally Posted by dai1983

Cheers for the reply,

Is the crank pulley keyed then?

The two rear pulleys each bank are keyed and marked, and so is the crank pulley.

[Mike Noc]

Originally Posted by kaiser

The two rear pulleys each bank are keyed and marked, and so is the crank pulley.

Yes they are all keyed, but the front two cam sprockets float.

[kaiser]

Originally Posted by Mike Noc

Yes they are all keyed, but the front two cam sprockets float.

So what?
1.They don't if you leave them!
2.The timing marks are on the rear! That is where the timing takes place.
3. If the fronts have never been moved, the timing is factory set and there can be no doubt about the setting! It must just be reproduced after belt change. Like on any normal car!

Is this really so difficult to understand?

[andy willi]

the best way to get it right is TIPEX mark it up and you cant go wrong i mark up the sprockets and the belt then transfer my markings from the old belt to the new belt and fit it (this is for the front belt ) the rear belts are so easy you cant get them wrong TIPEX again to make sure,

andy

[dai1983]

Originally Posted by kaiser

So what?
1.They don't if you leave them!
2.The timing marks are on the rear! That is where the timing takes place.
3. If the fronts have never been moved, the timing is factory set and there can be no doubt about the setting! It must just be reproduced after belt change. Like on any normal car!

Is this really so difficult to understand?

Cheers for that and makes perfect sense. I’d thought that they were mostly all floating hence the need for so many tools!

[SD1too]

PM sent to dai1983.

Simon

[Mike Noc]

Originally Posted by kaiser

So what?
1.They don't if you leave them!
2.The timing marks are on the rear! That is where the timing takes place.
3. If the fronts have never been moved, the timing is factory set and there can be no doubt about the setting! It must just be reproduced after belt change. Like on any normal car!

Is this really so difficult to understand?

Ha ha - I understand what you are saying, I just don't agree with it.


As to your specific points:

1. Why on earth did Rover go to the expense of floating cams and setting tools if they weren't to be used when changing belts?

If it was just a question of finding the initial setting at the factory they would have done that, set it as a standard for production engines, not used floating cams and saved money.

2. According to the chap who was involved with the design, the factory timing marks on the rear cams aren't accurate marks for the engine due to the fact that they were still fine tuning the valve timing for the optimum setting after the production tooling had been manufactured.

If you know where to look, this is mentioned in RAVE.

3. The factory set the floating cams to suit the front belt they fitted when the engine was built up. If you change the belt you should then set the engine up to the new belt just as they did in the factory to ensure any variations in belt tolerances don't affect the engine timing.

Whether anyone uses the tools or not is down to them. If you think near enough is good enough then fine, and in reality it will be, but my view is that the best way to ensure the timing is spot on is to use the tools as recommended by the factory.

[marinabrian]

I always use the tools for this job, and it's not uncommon to see incorrectly timed engines that have been got at by the "Tippex Brigade"





I would say that a set of cheap tools is fine for once in a blue moon use, but use Gates Powergrip belts, not Dayco as supplied by this customer

Brian

[dai1983]

Originally Posted by marinabrian

I would say that a set of cheap tools is fine for once in a blue moon use, but use Gates Powergrip belts, not Dayco as supplied by this customer

Brian

Why are the Gates ones so much better? I’ve used both in numerous cars but every day is a school day.