14 replies to this topic

[087dave]

Hi all when no1 cylinder is at TDC what position
Should the distributor drive be in.
Just fitting a new one today just what to b shore.

Tks

Edited by 087dave, 28 February 2014 - 08:47 AM.

[petey81]

I had mine with the vacum advance around 1oclock position to get it started. Leads are 1 3 4 2 anti clockwise

Edited by petey81, 28 February 2014 - 08:59 AM.

[Gremlin]

I think he means where the drive dog slot is pointing, as you will know it is offset, and it is supposed to be in the 1-2 o clock to 7-8 o clock position, and for it to be offset 'up', if you drew a line perpendicular from the drive slot on the offset side, it should point to around 10-11 o clock

[Cooperman]

When you set the dizzy drive shaft to the position in the manual with 1 & 4 at TDC, make sure it is firing on No.1, not no.4.

[jaydee]

 

B in the pic is the convetional position for the dizzy drive with cyl 1 at firing TDC (both valves are closed)

Please note that the red part is bigger than the blue one.

[Cooperman]

Well done, 'JD'.

[petey81]

Cheers guys I didn't read op question correctly

[KernowCooper]

Thats one of the best Images I've seen jaydee

[087dave]

Tks for the replies

But when I put the distributor in place with the drive
At 8 to 2 position the distributor itself , the rotar arm is n the
4 o clock position where I though the rotar arm is to be at the top
Right hand position

Any one help

[minimender]

Tks for the replies

But when I put the distributor in place with the drive
At 8 to 2 position the distributor itself , the rotar arm is n the
4 o clock position where I though the rotar arm is to be at the top
Right hand position

Any one help

Probably got the drive a tooth out, pull out, rotate anticlock a little in insert again

Edited by minimender, 28 February 2014 - 07:14 PM.

[KernowCooper]

Rotor arm should be about 1 o'clock on TDC No 1 firing

[bpirie1000]

Pics are great... Still a pain in the ass to do.... Take time get it right...

[bpirie1000]

Oh and no1 cylinder next to radiator....

[087dave]

Right so I tired it again and I have the drive at 1,7 I
Moved a tooth.
But the dizzy is at the 3 o clock.

Should it matter that the dizzy is a custom one rebuilt
By Aldon for my set up?

[dklawson]

Should it matter that the dizzy is a custom one rebuilt By Aldon for my set up?

 

I would have expected Aldon to put the drive dog on the dizzy shaft in the correct position but it sure sounds like the one you have is off by as much as 90 degrees or so.

 

As mentioned above, the nominal orientation is for the rotor to point towards 1:00 o'clock. Pull the drive gear out of the block and continue trial and error fitting of the gear and distributor (moving the drive gear counterclockwise each time) until you get the rotor pointed where you want it to be.  A 

 

Do not sweat about this.  The absolute position/orientation of the drive gear is not important.  What is important is that the gear position allows you to swing the distributor body through a sufficient angle to allow setting the ignition timing properly. This is your engine and your distributor.  Put the drive gear where you want it so you can swing the distributor through a decent angle to set the ignition timing... ideally such that the rotor points generally towards 1:00 o'clock.