Hi guys..

Am about to change my camshaft for a Punto 75 one..And am checking one thing..

The Punto sprocket has 38 teeth, but as the car is a daily driver, im not able to check out the number of teeth on the standard one..
Does anyone have one at hand, so he could count the teeth on it..?

If the nr.are equal, there should be no reason not to change cam WITH sprocket already on..or is there..

Thanx for any input...

Greatings
Marko

Dunno what car you have. This'll have a bearing on it all.

Changing the cam and pulley together as you suggest is almost certain to wreck the cam oil seal (which you should really replace anyway -- protect the seal from the sharp edge of the cam by putting a bit of sellotape round the cam) . Don't forget that you need to set the valve clearances to P75 spec or you'll end up with an engine which either doesn't run as well as it should, sounds like a bag of nails, or destroys itself.

My advice, use the old pulley.

Ok..use old one...its an cinq..1995..But..as i have the cam with sprocket in my hand..how do i get the sprocket off??? Any ideas..put in vice and have a go(not sure about damaging the cam..)..or what..??

Clearances are known to me..have all the parts required(8 extra shims..)..
Which seal do you mean..the one on the sprocket side or the other side??how can you damage them?? Can you explain that..

Have the Punto Haynes manual..as it-s the 1.1 engine,i think i can use that..
Any advice...what should i look out for..?What posible traps??

Greatings
Marko

Later -- work calls -- but you can't have the right shims until you fit the P75 cam, hich puzzles me...........

Put wooden blocks in the vice before putting the cam in. That will let you get the sprocket off.

You can use the standard timing, but do check it to make sure its not too far out. You could loose all the benefits,

As fingers suggests, you can't know what shims you need until you get the cam fitted.

Cheers

SPD

By saying i have extra shims i mean just that...8 in the car+ 8 extra..there is a high chance i won't have to buy any..I HOPE the 8 extra are from the Punto donor car..i know it doesnt have to be right..but im optimistic... I know it is trial and error..

Ok..as to timing..I plan to rotate the engine to the appropriate position(markings)..remove cambelt,remove cam..with the first cam lobe pointing straight up..(am thinking about some kind of device to ensure it is straight)..remove old cam..change sprocket..there is a lobe on the cam..and a lobe on the sprocket..ill put it together so that it fits...and then put the NEW cam in, so that the first cam lobe points straight up(as the original)..Tighten everything up,measure valve clearences, take cam of..reshim as required..reinstal cam..remeasure..Reinstal cambelt..PRAY...fire..

I hope you agree with the procedure..or have any aditional suggestions..
After that, its 38TB time..i hope to do it all on the same day..just need someone to make the spacer for me

Thats what I mean about using the standard timing.

The correct place for the timing marks for the sprockets (top and bottom) are shown in the guide. Use them, you'll not be far wrong.

The problem occurs when using the Cento sprocket on the 75 cam. You assume the dowell on the cam is in the right place, and it will be close, but to get the best performance you would be better timing it properly with a dial.

I presume you've done a compression test before fitting the cam.

Cheers

SPD

Before you bolt the cam don for the last time, pop in a new camshaft oil seal. It should ork fine out of the crate. To get it finer, you'll probably need a remap and a vernier pulley.

I'm not sure that the Haynes Punto manual gives the P75 clearances, but I think you'll find them in the Punto FAQs somehere.