TDC on pulley / trigger wheel position for MJ
Turbo Mini Forums

Hi, im fitting a trigger wheel today, and just wanted to check something..

in relation to the timing marks on the timing chain cover where should the missing tooth on the trigger wheel be? assuming that piston 1 is at TDC?

or taking a reference from the pulley where should the missing tooth be? e.g. is it 9:00 o’clock?

cheers. Mark

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7423

I think its usually 90 degrees before TDC. as per the above link

Even if it is not you can offset the figure in the map etc

Cheers Brocky

Edited by Brocky on 2nd Feb, 2007.

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

https://www.facebook.com/groups/17557298589...096464253807802

Think i just read on another post that its 90 degrees from the sensor..

oh well i will have a play and see what happens!

Yeh, just read the one I linked and Toms putting it at TDC and then the sensor bracket he does positions the sensor 90 degs before this ie at the front of the engine.

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

https://www.facebook.com/groups/17557298589...096464253807802

Its 90 degrees for a 4 cylinder EDIS


alex

AlexF

alex, is that the missing tooth at 90 from the sensor?

cheers.

easiest way to explain it is to put the engine at TDC, the missing tooth at 12 and the sensor at 9...pretty sure thats how mine is, using toms sensor bracket and a pulley machined the same.

cheers, that clears it up.

AS bud said...

Its so the MJ sees that tdc on cylinder one is on it way!

It then has 90 degrees of engine rotation to decide what to do and then actually do it! Hence you can run a maxiumum of 50 degrees advance - it needs 40 degrees to make its mind up.

ALex

AlexF