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Author Topic: Crank position + timing kit  (Read 1415 times)

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JamesV6CDX

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Crank position + timing kit
« on: 19 March 2007, 22:47:40 »
What position does the crank need to be on the V6, before I remove the timing belt and the heads? (so I don't get any piston/valve contact...)

Does anyone fancy lending me a timing kit for a bit? ;D

« Last Edit: 19 March 2007, 22:48:33 by JamesV6CDX »
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sounds2k

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Re: Crank position + timing kit
« Reply #1 on: 19 March 2007, 23:28:36 »
I thought it was 60 degrees before TDC, but is that clockwise or anti-clockwise when looking from the front of the engine?

As you know, I have a locking kit ... however I need to check the timing on the new miggy's been set right for my own peace (or should that be piece  ;)) of mind by the dealer's mechanic - who used red paint to mark the cam casing, which is a bit worrying ... once I know that's OK you can borrow it again  :)
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Matchless

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Re: Crank position + timing kit
« Reply #2 on: 20 March 2007, 00:01:50 »
With the crank aux belt pulley removed you can see the notch which is the crank timing mark.
use socket on crank pulley bolt and rotate clockwise (looking at pulley) until notch is at 3 o'clock, this is 90deg before tdc, you need 60 deg btc so continue to turn clockwise till the notch is at 4 o'clock.

Back off both idlers and release the tensioner and you should be able to slide the belt off. Dont get your fingers between the cam pulleys, there is a lot of stored energy in the valve springs and you could easily lose a finger. Use a torx bit in a T bar (NOT a ratchet) and turn each cam slightly until it finds a safe resting position. You can then remove cams etc but do not turn the crank again until the heads are off.
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JamesV6CDX

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Re: Crank position + timing kit
« Reply #3 on: 20 March 2007, 07:22:43 »
Quote
With the crank aux belt pulley removed you can see the notch which is the crank timing mark.
use socket on crank pulley bolt and rotate clockwise (looking at pulley) until notch is at 3 o'clock, this is 90deg before tdc, you need 60 deg btc so continue to turn clockwise till the notch is at 4 o'clock.

Back off both idlers and release the tensioner and you should be able to slide the belt off. Dont get your fingers between the cam pulleys, there is a lot of stored energy in the valve springs and you could easily lose a finger. Use a torx bit in a T bar (NOT a ratchet) and turn each cam slightly until it finds a safe resting position. You can then remove cams etc but do not turn the crank again until the heads are off.

Thanks Matchless :y
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sounds2k

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Re: Crank position + timing kit
« Reply #4 on: 20 March 2007, 07:43:31 »
pardon me for being thick, but if 90 degrees is 3 o'clock, surely 4 o'clock would therefore be 120 degrees and 60 degrees would be 2 o'clock? Or am I missing something?

ta  :y
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Marks DTM Calib

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Re: Crank position + timing kit
« Reply #5 on: 20 March 2007, 07:56:41 »
Yes you are missing something.....its 60 deg BEFORE TDC....so 3 Oclock is 90deg before TDC, 4 Oclock is 60, 5 is 30 etc......what also confuses people is that the timing mark is effectively at 6 Oclock.....
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sounds2k

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Re: Crank position + timing kit
« Reply #6 on: 20 March 2007, 14:57:45 »
ah - right, cool ... thanks for the enlightenment Mark ... the mists are clearing  :y
« Last Edit: 20 March 2007, 14:58:01 by sounds2k »
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TheBoy

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Re: Crank position + timing kit
« Reply #7 on: 20 March 2007, 20:16:42 »
Quote
What position does the crank need to be on the V6, before I remove the timing belt and the heads? (so I don't get any piston/valve contact...)

Does anyone fancy lending me a timing kit for a bit? ;D

My v6 camlock kit is currently in Carterton (I hope!).  If you can get there, you are welcome to borrow?
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JamesV6CDX

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Re: Crank position + timing kit
« Reply #8 on: 21 March 2007, 13:58:28 »
Quote
Quote
What position does the crank need to be on the V6, before I remove the timing belt and the heads? (so I don't get any piston/valve contact...)

Does anyone fancy lending me a timing kit for a bit? ;D

My v6 camlock kit is currently in Carterton (I hope!).  If you can get there, you are welcome to borrow?

Might take you up on that mate, it's only about 20 miles from me.....

Then I've also got an excuse to bring the Elite to Brackley when done, for a Tech2 session ;D
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TheBoy

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Re: Crank position + timing kit
« Reply #9 on: 21 March 2007, 14:33:19 »
Quote
Quote
Quote
What position does the crank need to be on the V6, before I remove the timing belt and the heads? (so I don't get any piston/valve contact...)

Does anyone fancy lending me a timing kit for a bit? ;D

My v6 camlock kit is currently in Carterton (I hope!).  If you can get there, you are welcome to borrow?

Might take you up on that mate, it's only about 20 miles from me.....

Then I've also got an excuse to bring the Elite to Brackley when done, for a Tech2 session ;D
No problem...
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Grumpy old man
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