timing marks

[raz1966]

i need to set up the ignition timing on my beta,2000 carb model, bosch electronic ignition.
the haynes manual shows a different crank pulley to mine.
the manual shows timing marks on the yellow plastic cover, mine has none on the cover.
mine has a pointer near the crank pulley and 3 marks on the pulley. one mark is on the back face of the pulley and 2 on the front face.
how do i set the timing?
i guess i need to get it roughly correct and then start the engine and fine tune it with a strobe. i just need to know which is the correct mark.

[rossocorsa]

bit confusing  I take it that the mark furthest left is the one on the back of the pulley? if so I think the middle mark (furthest left as you look at it of the two on front of pulley) corresponds with TDC the furthest right mark seems to be at 28 degrees timing should be set  with vacuum advance disconnected and engine at 3000rpm to 28 degrees mark. I think that is right the tech data can be a bit confusing!!

by the way don't be over reliant on the haynes manual in typical haynes style it only rather vaguely covers later cars I hardly ever use mine the stuff issued by Lancia ,whilst still confusing, is a lot better

[MattNoVAT]

To make your life easier, I have a couple of spare 2000 cam cover so will check to make sure they have the 3 timining marks.  I'll send you FoC.

The longest mark is TDC, and then the other two are 5 & 10 degrees before TDC.

[raz1966]

cheers, what mark on the pulley should line up with the ones in the cam cover?

[MattNoVAT]

I'll take a picture of mine as an example.

On my S1 and my S2 there is a little "nick" in the fan belt pulley that lines up with the timing marks on the cam cover.

[raz1966]

do you mean the crank pulley?

[MattNoVAT]

yes, sorry crank pulley

[MattNoVAT]

See attached picture, I have drawn a red ring round the mark on the crank pulley, its not a great pic (sorry) but the mark is very small.  To me it actually looks like a cut in the top edge of the alternator belt guide on the pulley.  Cleaning up the outer edge of the pulley with a wire brush may help identify the mark.  (Mine is painted gloss black which does not help I guess)

Have found a 2000 timing belt cover with the marks on (and one without) so will pop it in the post to you.


 

[rossocorsa]

from what it says in the tech data for timing cars with bosch electronic ignition I suspect you should use the 28 deg and not the 10deg mark  possibly why some cars have no marks on the cambelt cover (??) also I am not convinced that any of the 3 notches will be in the same place as the pulley with only one mark as I figure that the pointer is not in the same place as the marks on the belt cover would be

[thecolonel]

It's been a while since I had a Beta however,
I seem to remember some were timed through
a hole in the bellhousing, three small marks
under an off-white  plastic cover and a mark
on the flywheel.

Geoff

[MattNoVAT]

from what it says in the tech data for timing cars with bosch electronic ignition I suspect you should use the 28 deg and not the 10deg mark  possibly why some cars have no marks on the cambelt cover (??) also I am not convinced that any of the 3 notches will be in the same place as the pulley with only one mark as I figure that the pointer is not in the same place as the marks on the belt cover would be

After a bit of thought I think the timing belt cover with the three marks  (TDC, 5 & 10 degree) will not be of any use unless you have the crank pulley with the timing mark that works in conjunction with it (and times on 10 degree BTDC) sadly I never thought take the pulley off to go with the cover.  

[rossocorsa]

you could get around this by setting the engine at tdc and then marking the pulley with the traditional blob of white paint

[MattNoVAT]

Yep, good thinking!

[raz1966]

i am more confused than ever.......there is a pointer on the crankcase near the crank pulley, is this for cam timing or ignition timing?

[raz1966]

the front part of my pulley has 2 marks which i guess are 28 degrees apart? is this correct?

[Ryan]

okay..

Crank pully: Line mark on pully with the first tooth on the pointer (the big one)

Cam shafts:  Look at the metal cover behind the cam pulleys.  You will find two holes.  Move each pulley til the tiny holes are roughly in the center of the holes in the plate. 

Auxillary shaft pulley:  This one has a ref mark on it and it doesnt need to be set exactly, but it has to be pointed at around 1 oclock.  I just point mine at the bolt that holds the t belt tensioner spring.

Crank over by hand a few times to make sure.... ect ect

[WestonE]

Ryan

The Aux Drive Shaft must be set at 37 degrees with the engine at TDC (Fiat provide a timing jig for this). This is critical to engine survival as this shaft has a lobe on the end that can hit number 2 con rod if mis-timed. This has killed a lot of engines over the years with a Con Rod through the block. The Lobe runs the manual fuel pump if one is fitted, but is still in place on IE and VX cars unless it has been modified after market which is one of the first tuning modifications carried out on these engines and is described in both Guy Croft books.

Eric