Club G40 Forum

Technical => Engine and Transmission => Topic started by: physicsfool on July 24, 2013, 09:29:17 PM

Title: Timing, rotar arm direction
Post by: physicsfool on July 24, 2013, 09:29:17 PM
Evening all,

So i am timing up the G. And the Haynes manual is saying that the rotor arm should be pointing to where you connect lead 1 up to the distributor cap.
However mine seems to be 180 degrees out. Instead its facing 4. taking the leads as (1,3,4,2).

I am taking position 1 to be the point closest to the front of the vehicle on the distributor cap.

how should one proceed?
Title: Re: Timing, rotar arm direction
Post by: Jezza-7 on July 24, 2013, 10:50:29 PM

l-3-4-2 (No 1 at timing belt end)
Title: Re: Timing, rotar arm direction
Post by: physicsfool on July 24, 2013, 11:02:46 PM
Ay, However when the dot on the pulley is matched up with the marker on the casing for the camshaft alignment the rotor arm isnt facing lead 1 its facing lead 4.
Title: Re: Timing, rotar arm direction
Post by: Jezza-7 on July 24, 2013, 11:07:56 PM
Oh, thats odd.

And the crankshaft timing pointer is matched correctly as well?
Title: Re: Timing, rotar arm direction
Post by: physicsfool on July 24, 2013, 11:16:22 PM
From what I remember, when in the alignment for the camshaft I remember valves for pistons 2/3 being open. Does that sound right?

There is only one way to attach the camshaft right? It has a woodruff key. But I am no mechanic so happy to be proven wrong
Title: Re: Timing, rotar arm direction
Post by: C0UP3 on July 26, 2013, 10:39:48 AM
Ensure timing marks on camshaft pulley and crankshaft pulley are both correctly aligned. Having just timing aligned will give you a 180 degrees off
Title: Re: Timing, rotar arm direction
Post by: physicsfool on July 26, 2013, 01:39:13 PM
OK, I lined up pistons 1 and 4 in TDC.and when looking at the trappets valves for the other 2 pistons are open.

The only issue i see is that a whole rotation on the camshaft pulley wont make a difference to the placement of the rotor arm.

PeteG40 thinks it could be a case of the dizzy simply being rotated 180 at the point it joins with the camshaft. i will drop it out this weekend and see if it has been tampered with on the back