2.4 tdci 135 bhp 2004 cylinder head cam tightwhen torqued up

[knobby1]

Generally if the head is warped and its skimmed, the correct practice is then to line bore the cam journals after skimming, I know this because i own a well known and famous car for warping cylinder heads a Triumph Stag, it's well documented that Triumph Stag Cylinder heads require line boring of cam journals after skimming of warped cylinder heads.

You also should not interchange the journals caps ...they should be numbered and put back in the same places.

Maybe swapping some around will sort it out if you've got them mixed up.

I've also seen some engine re-buiders in videos (cant find them now) put some sort of moly-based (Molybdenum Disulfide) grease on the journals during assembly

see here:
https://www.capitalremanexchange.com/wh ... ly-grease/

Better safe than sorry !


all the best..mark

Duratorq engines don't have separate cam journal caps, the whole upper half is just one piece. A warped head could indeed explain the tightness though.

http://www.catcar.info/ford/?lang=en&l= ... I3Mg%3D%3D

Lord Knobrot

[metalworker0]

AH, right i see ...but the moly advice would not harm though.

all the best...mark

[marc1234567]

Generally if the head is warped and its skimmed, the correct practice is then to line bore the cam journals after skimming, I know this because i own a well known and famous car for warping cylinder heads a Triumph Stag, it's well documented that Triumph Stag Cylinder heads require line boring of cam journals after skimming of warped cylinder heads.

You also should not interchange the journals caps ...they should be numbered and put back in the same places.

Maybe swapping some around will sort it out if you've got them mixed up.

I've also seen some engine re-buiders in videos (cant find them now) put some sort of moly-based (Molybdenum Disulfide) grease on the journals during assembly

see here:
https://www.capitalremanexchange.com/wh ... ly-grease/

Better safe than sorry !


all the best..mark

thanks metalworker. should there be hournal caps . mine seems to sit in head and have rocker arm cradle carrier which sits on the cams , the head and carrier joining to form a tight fit.

[metalworker0]

No, i got that wrong .A lot of engines have these your transit does not - see knobby correcting me above.

all the best.mark

[marc1234567]

No, i got that wrong .A lot of engines have these your transit does not - see knobby correcting me above.

all the best.mark

Thanks for your advice. I was thinking of using some sort of grease. someone suggested I just use engine oil and i listened to them regrettably . I could undo it again take a couple of hours I guess. others have said a certain amount of tightness is ok. If the tightness were a result of the warping , is it a result of the skim or something else. I had 12 thousandths taken off.

[marc1234567]

Generally if the head is warped and its skimmed, the correct practice is then to line bore the cam journals after skimming, I know this because i own a well known and famous car for warping cylinder heads a Triumph Stag, it's well documented that Triumph Stag Cylinder heads require line boring of cam journals after skimming of warped cylinder heads.

You also should not interchange the journals caps ...they should be numbered and put back in the same places.

Maybe swapping some around will sort it out if you've got them mixed up.

I've also seen some engine re-buiders in videos (cant find them now) put some sort of moly-based (Molybdenum Disulfide) grease on the journals during assembly

see here:
https://www.capitalremanexchange.com/wh ... ly-grease/

Better safe than sorry !


all the best..mark

Duratorq engines don't have separate cam journal caps, the whole upper half is just one piece. A warped head could indeed explain the tightness though.

http://www.catcar.info/ford/?lang=en&l= ... I3Mg%3D%3D

Lord Knobrot

I was a bit worried there. I am quite methodical about keeping all the parts I disassemble labelled and organised so was pretty sure I had not forgotten about them

[knobby1]

Thanks for your advice. I was thinking of using some sort of grease. someone suggested I just use engine oil and i listened to them regrettably . I could undo it again take a couple of hours I guess. others have said a certain amount of tightness is ok. If the tightness were a result of the warping , is it a result of the skim or something else. I had 12 thousandths taken off.

If you've taken 0.012" off the head, the compression ratio will have increased accordingly....but should still be fine.

Lord Knobrot

[marc1234567]

Thanks for your advice. I was thinking of using some sort of grease. someone suggested I just use engine oil and i listened to them regrettably . I could undo it again take a couple of hours I guess. others have said a certain amount of tightness is ok. If the tightness were a result of the warping , is it a result of the skim or something else. I had 12 thousandths taken off.

If you've taken 0.012" off the head, the compression ratio will have increased accordingly....but should still be fine.

Lord Knobrot

thanks mate, I thought 12 would be ok and increase compression, I was just wondering if somehow redimucing thickness leads to journals fitting more snuggly and how that might happen.