k-series cam sprocket positions

[Leehaughey]

I had to remove my head on my rover 75 1.8t because an exhaust stud had snapped off. I'm a novice at this sort off
major repair but Haynes manual in hand removed the head. it has been repaired by an engine shop and a new stud fitted.
I replaced the head gasket, all belts, water pump and a few others.
I reassembled what I thought was the correct position of the cams but the car now returns over but does not fire into life. I have been told the cam sprockets are not in the correct position in regards to the cam sprocket locating pins. I'm being told I'm 180 deg out. What ever that means???
I have uploaded a photo of the cam sprockets as they are now.
Can anyone tell me if the set up is correct or incorrect ???
If incorrect can anyone tell me or upload a photo of the correct positions .
I would be much obliged with the help as am really frustrated and wish I had taken it to a garage now.

Edited by Leehaughey on Tuesday 9th April 11:18

[jimbob82]

you can't get the cam sprockets 180 degrees out, so whoever told you that should be disregarded.

I can't see the pic to tell if you have it right or not...

For future reference the cams can be left in place when removing the head.

Edited by jimbob82 on Tuesday 9th April 11:08

[Leehaughey]

sorry might have made you not understand, the cams themselves were not removed, I only the cam sprockets once the timing belt was removed, as i had to turn each cam to remove 2 of the head bolts as they were in the way.

[Leehaughey]

[SuperchargedVR6]

Looks like yours is out...

[jimbob82]

aah ok. the pins that stick out of the camshafts should correspond to the in or ex mark on the cam gears. It looks from that picture like you have them the wrong way around atm. this may or may not have borked the valves, only way is to reset them to their correct positions with the crank timed and try again.

[SuperchargedVR6]

Yep. That pic I linked to above is exactly how I timed mine (plus the relevant alignment on the crank sprocket) and it fired up immediately like it'd never been apart

[Leehaughey]

So this being said its clear that mine is wrong. so if you can explain it in dufus terms for me. As I still completely confused,
Do I take It I have turn each individual cam again.
Obviously with the belt off.
As your looking straight at the cams ignoring the sprockets position at the moment as i'm going to us them just to turn each cam pin only the refit in the correct position afterwards
what position in clock terms does the left pin have to point to
and what does the right pin have to point to ???

[jimbob82]

Leehaughey said:

So this being said its clear that mine is wrong. so if you can explain it in dufus terms for me. As I still completely confused,
Do I take It I have turn each individual cam again.
Obviously with the belt off.
As your looking straight at the cams ignoring the sprockets position at the moment as i'm going to us them just to turn each cam pin only the refit in the correct position afterwards
what position in clock terms does the left pin have to point to
and what does the right pin have to point to ???

jimbob82 said:

the pins that stick out of the camshafts should correspond to the in or ex mark on the cam gears

don't think i can put it any simpler

[Mr2Mike]

Leehaughey said:

So this being said its clear that mine is wrong. so if you can explain it in dufus terms for me. As I still completely confused,

The pins in the end of the cams are engaged with the wrong slot in the pulleys, on both cams. Look at the markings on the center of pulleys; one slot is marked IN, and one is marked EX. The inlet cam (left hand cam in your pic) should have the pin engaged with the slot marked "IN", the exhaust cam should have the pin engaged with the slot marked "EX".

You will need to:

1) Lock the crank in the "safe" position as described in the Haynes manual.
2) Remove the pulleys and correctly re-locate them
3) Time everything up again
4) Hope that you don't have any bent valves.

[DVandrews]

Provided that the roll pins are correctly engaged in the correct slots then either of the two positions is correct, the first position is simply one crank rotation further on in the engines cycle. Basically when the crank is at 90BTDC on number one cylinder with the pistons rising , the cam sprockets should be orientated so that the rim markings draw an imaginary line through the centres of the cam sprockets, the markings on the sprockets (exhaust) should both be pointing in the same direction, either to the inlet side or the exhaust side, it really doesn't matter which provided they are both the same.l

In the first picture (OPs) the roll pins are engaged in the wrong slots, if that were corrected and the pullies re-aligned in the same position all would be well for belt fitment.

Dave

Edited by DVandrews on Tuesday 9th April 21:17