Technical Camshaft refitting Barchetta

[Faurbye]

I am having the headgasket changed (pressure in cooling system). And now my friend who is dooing the job, is asking if there are any marks to line up when refitting the camshafts after the head has been straightned (he does not seem to find any marks on the "wheels". (sorry for my english, but i am from Denmark )

I have looked in the repair manual, and i can not find anything ....

PLS help so i can get the boat running again

 

[LeftyGreg]

What you need is the camshaft locking tool which locks the camshafts at the point for the engine at Top Dead Centre

They are not expensive and easy to use

 

[bugsymike]

I am having the headgasket changed (pressure in cooling system). And now my friend who is dooing the job, is asking if there are any marks to line up when refitting the camshafts after the head has been straightned (he does not seem to find any marks on the "wheels". (sorry for my english, but i am from Denmark )

I have looked in the repair manual, and i can not find anything ....

PLS help so i can get the boat running again

If you have the age,cc and engine Series Number I might be able to find more detail.
My cam belt timing data manuals don't always have a lot on Barchetta but sometimes engines are used in different models.

 

[Faurbye]

What you need is the camshaft locking tool which locks the camshafts at the point for the engine at Top Dead Centre

They are not expensive and easy to use

The camchafts are beeing removed, so i do not think the locking tool will do the trick.

 

[Faurbye]

If you have the age,cc and engine Series Number I might be able to find more detail.
My cam belt timing data manuals don't always have a lot on Barchetta but sometimes engines are used in different models.

the car is early 1995, 1.8. I do not have the engine series number at hand, as it at my friends garage

Maybe an idear to how we can mark the placement ?!?

 

[Faurbye]

The camchafts are beeing removed, so i do not think the locking tool will do the trick.

The camchafts are beeing removed, so i do not think the locking tool will do the trick.

Or the again when i think about it..... perhaps you are right.

is there a mark on the flywhell marking Top Dead Center, or can it only be found with a gauge?

And any idear as to where i can buy the locking tools?

 

[Davefridge]

I am having the headgasket changed (pressure in cooling system). And now my friend who is dooing the job, is asking if there are any marks to line up when refitting the camshafts after the head has been straightned (he does not seem to find any marks on the "wheels". (sorry for my english, but i am from Denmark )

I have looked in the repair manual, and i can not find anything ....

PLS help so i can get the boat running again

I would have lined up the pulleys (wheels) at tdc before dismantling anything and marked them all with tipex if there were not any marks to be found.

 

[bugsymike]

A engine Series number would be best.
All I can find without, is a range of Fiat 16 valve engines around that era, see photos below.
The first one may be relevant re spark plug tool.
In the old days we used to get piston at TDC on No1 and the valves on the rock on No.4, lot harder with two cams though.

 

[LeftyGreg]

Or the again when i think about it..... perhaps you are right.

is there a mark on the flywhell marking Top Dead Center, or can it only be found with a gauge?

And any idear as to where i can buy the locking tools?

You do need them as they lock the camshafts in the right place when fitting the belt

I got mine from Amazon, have them in my garage somewhere, but would cost more to ship to you than they cost

https://amzn.eu/d/7sCUxHx

Just search for Barchetta Cam Lock Tool and you should find them

 

[jmi]

You do need them as they lock the camshafts in the right place when fitting the belt

Yes, locking tool is needed for fitting. You do not need them for removing camshafts, but refit and getting timing right as camshafts does not have timing marks.
But there is TDC marking on flywheel. I have used that when replacing timing belt. On my simple opinion is, that it is more accurate than trying to find TDC using piston height.

- J

 

[bugsymike]

Yes, locking tool is needed for fitting. You do not need them for removing camshafts, but refit and getting timing right as camshafts does not have timing marks.
But there is TDC marking on flywheel. I have used that when replacing timing belt. On my simple opinion is, that it is more accurate than trying to find TDC using piston height.

- J

Tend to agree with you , a TDC mark on a large flywheel feels more precise than a top dead centre mark on a piston height as you can move the flywheel a fair amount with little effect on the piston's height as it goes over TDC.
I know you can move it back and forwards to centralise as dial gauge goes up and down, but it doesn't feel the same.

 

[s130]

The cam shaft locking tools are not locking as such but angle/position locating. When your mechanic puts the cam shaft back in the locking/timing tools are actually two dummy bearing caps that locate the cam lobes in the correct position. One the installs that timing belt, etc. with the crank at TDC. Then remove the cam timing dummy bearing caps and replace the original bearing caps.