Just removed my "worn" cam and i cant see if its worn or not.







If this isnt worn then i have no idea whats wrong with my car

let me know

 

nah it doesnt.

 

why did you take it out in the first place????

 

Great, well I was geting a top end irregular rattle, not tappety, and the turbo was spinning up but no power at all, felt like it was holding back.

When I posted the symptoms people said it was a worn cam, what else could it be??? Might it be the valves???

Also 2 of the followers were really hard to get out, the other 6 came out nicely, could that point to a problem??

cheers

 

as above mate

 

were you gettin the noise when it was under load i.e puttin your foot down???

 

constantly, not my though but it was there. Before I lost all power the turbo would spin up then hold me back and then let all the boost go in a oner. Few miles later....nothing really struggles to drive?

 

without seeing or hearing the car its hard to diagnose,its easy puttin posts up on a forum but as youve discovered things peeps tell you are not always the case,if i were you ide put the cam back in and see if the noise is still there if so get it to sumone that knows what there doin and talkin about.sorry i couldnt help you any further

 

ok cheers for the help anyway

 

There is no way anyone can make a accurate diagnosis of that cam due to the piccies being blurred.
If two of the hydraulic followers were hard to get out, have a close look at the surface they run on, you may well find it is cored to buggery.
This wil certainly give you constant noise if bad enough to jam tappets them only freeeing off each time they are whacked by the cam and pushed down again, my suspicion being if they are jamming without fully rising again due to the valve spring pressure, the valves will of course be open.
The cam is in constant contact normally, albeit very gentle contact when off lobe, then gently pushes open, but if jamming you get a sudden clout as the lobe hits the bucket each time.
The cam may well not be worn but it is crucial that the followers slide freely.
tabetha

 

Cored??? What do you mean. One thing i do know is that im going to need new followers as them two that got stuck are a bit chewed from my pliers

 

if the followers have a big indent at the bottom there fooked

 

its not a big indent, they just arent flat, the others all line up fine on the steel ruler

 

put new cam and followers in and see what its like then.

 

he ment scored fella in your pics to me in certain places your cam has lost its hardness!

 

ok so my cam is 285t2, if i change it for a different cam will I just need the engine setting up again??

 

with the power your running i'd go back to a standard cam and probably benefit from what will seem like less lag as the power will be moved lower down the power band and feel more responsive

 

great minds think a;ike, will i need it re setup though??

 

If two of the followers were stuck then that is a sure sign that the cam is worn, although it is impossible to tell from those pictures alone - although there do seem to be some wear lines on some of the lobes.

When the cam starts to wear it mishapes the bottom of the follower, which "spreads" out. When you then try to remove the follower it scores the bore - which is what Tabetha was referring to. This is not good.

What you should to if you can't get a follower out is remove the cam with the stuck ones still largely in situ. Once the cam is out of the way you knock the stuck followers into the head and push them out the camshaft hole. Wrenching them out with pliers is a great way to wreck the bore so the new follwers don't fit as well as they should.

When a cam is badly worn it may or may not be noisy. I had one that was really badly worn - about 3mm of 4 of the lobes but it wasn't noisy. I replaced it because power was down so much - the engine wasn't revving past 5000rpm. I put a EFi CVH cam back in insead of the normal one - it makes a huge difference and seems to work really well with the T3.

 

If you've ragged the followers out and scored the bores your head is scrap.

 

will i be able to see the scores or with they most likley be too slight

 

you'll see em alright. Did you really rag em out or were they just a bit stiff to start?

 

they cme half way out easily, then i had to get pliers on them and pull them out, i did do it slowly didnt just clamped on and yank them

 

Run your finger round the bores feel for any roughness or scoring.

If they were just a bit tight, the bottoms get a bit battered by the cam and expand out and the bottom dishes a bit . As long as there weren't big burrs scratching into the bores while you were pulling, chances are you will be fine.

Do you have an oil pressure guage btw? Low oil pressure getting to the head will cause top end to rattle and will fcuk your turbo too.

Good luck mate.

 

Thay are marked lightly, not to touch, that the other thing, when i lost power and had hesitant power, my oil pressure had dropped.

will this new cam sort tht?? also im planning on using 10 40 oil when i have put it back together,, is tht ok

cheers

 

slight rough feel actully, a normal follower still goes in smoothly

 

sounds like you might have got lucky, only true way to tell though is to try new cam. as to oil pressure the cam will have nothing to do with it. the type of oil to use is a bit of a mine field i personally use millers 10-60 and earlier you asked if a standard cam would mean having the timing re-set and the answer is yes back on standard timing with standard pulley

 

been told i can keep my vernier pulley though?????

That was the guy from my rollong road

 

they are worn cams