Timing questions

[stagus]

Evening all,

So the long put off job of timing chain replacement has finally got the better of me, and i have decided to tackle them.

I am at the stage of removing the front cover, and thought i would remove the cam covers and check the timing marks. I have a slight problem as the timing marker plate is corroded that sits above the pulley on the front case, so the marks are not very visible and when i line up the camshaft sprocket marks with the cam cap marks the rotor arm brass contact plate (narrow end) is pointing over to the offside bank of cylinders and no where near the said no.2 cylinder at the front of the nearside???!!. As i said the pulley has a succession of lines on the middle portion in various locations of its diameter, however there is a notch on the inner part of the pulley, is this the mark used to line up against the marker plate?.

Now i am not so worried at the moment as i know the car has been running perfectly, and so far i have not had anything apart to have changed the timing, and i will just keep everything in position and change the chains, guides tensioners etc in situ, however it is annoying that nothing seems to line up as all manuals and the "DVD" states unless i am very much blind???!!!.

Cheers.

[bunny]

Hi
If she was running fine, then line up your cam marks, until the rota arm is at number 2, and your crank marks should be somewhere near the tdc mark, then get a new timming marker plate.
If she was running fine before then all should be ok.

[milothedog]

Evening all,

So the long put off job of timing chain replacement has finally got the better of me, and i have decided to tackle them.

I am at the stage of removing the front cover, and thought i would remove the cam covers and check the timing marks. I have a slight problem as the timing marker plate is corroded that sits above the pulley on the front case, so the marks are not very visible and when i line up the camshaft sprocket marks with the cam cap marks the rotor arm brass contact plate (narrow end) is pointing over to the offside bank of cylinders and no where near the said no.2 cylinder at the front of the nearside???!!. As i said the pulley has a succession of lines on the middle portion in various locations of its diameter, however there is a notch on the inner part of the pulley, is this the mark used to line up against the marker plate?.

Now i am not so worried at the moment as i know the car has been running perfectly, and so far i have not had anything apart to have changed the timing, and i will just keep everything in position and change the chains, guides tensioners etc in situ, however it is annoying that nothing seems to line up as all manuals and the "DVD" states unless i am very much blind???!!!.

Cheers.

Try turning the engine over one more turn, you may just be out 180 Degrees, you should find that the rotor arm then lines up.

Ian.

[Westfaling]

Guys
I've not seen the video but with No. 2 at TDC on the firing stroke the rotor arm is supposd to point at the outboard coil mounting bolt. Which it sounds like it is.
Nick

[milothedog]

Guys
I've not seen the video but with No. 2 at TDC on the firing stroke the rotor arm is supposd to point at the outboard coil mounting bolt. Which it sounds like it is.
Nick

Good point nick, I just assumed he meant it wasn't lining up with the No 2 lead on the cap, but he may be confusing that with it needs to point towards the actual cylinder

Ian

[Stagdad]

Try wire wool on the timing plate followed by rubbing it with some white paint ,i bet you will be able to read it after that.Like already said you need to point to No2 lead on the dissy not no2 cylinder which it sounds like you are trying to do. And as already mentioned it will only be in the right place every second turn of the crankshaft as this rotates at twice the speed of the camshafts.

Cheers Steve

[dasadrew]

... as already mentioned it will only be in the right place every second turn of the crankshaft as this rotates at twice the speed of the camshafts.

Cheers Steve

I thought that too until I found out that it is every 4th turn when camshaft + crankshaft + auxiliary shaft all line up again! Must be something to do with it being a V8 ??

[Stagdad]

Good point Drew but must admit i havent really bothered with looking at the aux mark except for initial chain fitting as the rotor arm can be moved to suit as long as the cams are in the right place.Is someone going to tell me there is a ballance issue now ?

Cheers Steve

[milothedog]

Good point Drew but must admit i havent really bothered with looking at the aux mark except for initial chain fitting as the rotor arm can be moved to suit as long as the cams are in the right place.Is someone going to tell me there is a ballance issue now ?

Cheers Steve

I think if there was it would have been developed with a balance shaft like the Ford V engines

Ian

[dasadrew]

Good point Drew but must admit i havent really bothered with looking at the aux mark except for initial chain fitting as the rotor arm can be moved to suit as long as the cams are in the right place.Is someone going to tell me there is a ballance issue now ?

Cheers Steve

No balance issue - I just meant that the distributor won't be in the right place every two turns, but every four turns once it has been set up.

[Stagdad]

Ah yes Drew but if it had a number of teeth on the skew gear that was a function of the number of teeth on the jack shaft main gear would it not be ok in any position?

[wilf]

Oh no Drew.

The rotor arm MUST be in the same place every two revolutions of the crank, else the engine could not run. The jackshaft sprocket might not be, though.

[dasadrew]

Ahhhh! You're both right! I spent ages trying to get my head around this and how the engine would run but gave up! All clear now - sorry for any confusion! I'll get me coat! (second time today. I mentioned Ital once, but I think I got away with it!)

I must admit to now not understanding why the manuals make such a hullabaloo about getting that damned scribed line on the jackshaft sprocket into that weird slightly down a bit horizontal position.

[wilf]

No, I spotted your Ital faux pas too, more lives than a cat, you, lol.

[Stagdad]

Ahhhh! You're both right! I spent ages trying to get my head around this and how the engine would run but gave up! All clear now - sorry for any confusion! I'll get me coat! (second time today. I mentioned Ital once, but I think I got away with it!)

I must admit to now not understanding why the manuals make such a hullabaloo about getting that damned scribed line on the jackshaft sprocket into that weird slightly down a bit horizontal position.

nor me,but then they also told us to undo the heads to fit the inlet manifold,i reckon they over thought it.