Timing belt change - Is this method OK?

[CP951]

Thanks.
I completely agree that the cam pulley might jump, but my point is I've already put marks on the old belt and the pulley, so even if it jumped , I can still realign the pulley mark with the mark on the new belt carried over from the old belt, so the cam/crank relationship won't change. What do you think?
I could turn the engine over afterwards to check the original marks, but I was thinking whats the point if I don't trust them. I'll do it for tightening up the belt.
Why should there be any differences in stress to the crank gear when doing the bolt by impact or torque wrench if both are set to the same torque level?
Why is it unsafe to lock the crank by gearbox and handbrake - I thought the engine puts out more torque than my impact wrench?
I've actually got the locking tool - unhappily paid for. In my opinion it does not look too sturdy - Locking the crank by a single bolt onto the block and putting > 450Nm onto it, I wonder if it might break.
I could do it by the traditional way, but what it comes down to is whether I trust the original marks or not, and my point is I don't. I am just trying to find a way that is more convincing to me.

[s2dude]

Erm. Why dont you trust the original marks??
Im sure they're a hell of a lot more accurate than this belt n braces approach!
Also, if you dont trust them, and you want to maintain your cars current timing...How do you know if it is timed correctly anyway?
The proper locking tool will not break at least I have never heard of this?

[WabTheKing]

Erm. Why dont you trust the original marks??
Im sure they're a hell of a lot more accurate than this belt n braces approach!
Also, if you dont trust them, and you want to maintain your cars current timing...How do you know if it is timed correctly anyway?
The proper locking tool will not break at least I have never heard of this?

you ever done a timming belt on an rs2? the marks dont line up!!!

so from that point of view i can see why someone would want t use there own marks

that way if it ran fine before, it will run fine afterwards, would still use the locking tool if you have one to hand tho

[s2dude]

you ever done a timming belt on an rs2? the marks dont line up!!!

so from that point of view i can see why someone would want t use there own marks

that way if it ran fine before, it will run fine afterwards, would still use the locking tool if you have one to hand tho

I thought this was for an S2 though where the timing marks are ok?! but good point Wab
I'd heard the Rs2 marks are incorrect but surely it's safer to time it half a tooth back using the wonky mark as a starting point like in this post?

Linky

[CP951]

Thanks Wab. You're the king. It is for an RS2. I'm glad at least you understood my point.

[S2central.net]

Thats the 1st you said it was for RS2... So obviously the factory timing marks cannot be trusted - marking the belt/pulley on a sweet running engine and transferring the marks to new belt is a sound idea.

However you should NOT attempt to lock the engine with the transmision - its bad practise on these engines. Use the recommended locking tools - they exist for a reason. I also shudder at the thought of torqueing up the bottom bolt with an impact wrench.

[CP951]

Thanks. Done it with my marks. Double checked with original TDC marks and the cam pulley mark is off by half a tooth. Used the lock tool as recommended - thanks everyone. I however used a stand to support the tool as I had reservations with the strength of the bolt on the tool. Engine started and running OK.