Technical Difference mk1 and mk2 cilinder head

[jorto]

Hi guys,

I want to install mk1 punto cams in my mk2 1.2 16valve punto.

Because the mk1 ones i heared have better lift and give at higher rpm more hp.

Now i can get a complete mk1 head for cheap, so is it possible i install the complete mk1 head on my mk2 engine?

Thanks

 

[Ziggy122]

or just change the cams over?
So no need to remove HG
just timing belt so you can remove the take camshaft out

Ziggy

 

[dave]

you know the cams dont sit in the head on a 16v? they sit in a cam carrier on top, its seperate to the head

 

[fingers99]

I think you'll need to drill an extra hole (for a stud) or two in the exhaust manifold if you decide to swap the entire head.

From what I hear, not all Mk1 16v heads have the lumpier cams.

 

[jorto]

What do you mean, they sit in a cam carrier on top, its seperate to the head ?

How do i know if i have the right cams. The cams i have seen come out of an lancia ypsilon 1.2 16valve engine with 86 hp witch is the same as the mk1 punto engine.

 

[dave]

What do you mean, they sit in a cam carrier on top, its seperate to the head ?

yes its seperate from the head.

we didnt get a lancia ypsilon in the uk, but i thought they was a lot newer than a mk1 punto, so may have the same cams as a mk2 punto

 

[jorto]

Do you have a picture of the cam carrier? I couldn't find a exploded view of the engine so i can't imagine how its mounted.

I heard that the lancia ypsilon had the same engine as the fiat punto mk1.

It comes out of an 1998 ypsilon, with an 1.2 liter 16 valve 86hp engine.

Would these cams improve my power of my 1.2l 16v mk2 punto and will it fit?

Thanks

 

[fingers99]

What do you mean, they sit in a cam carrier on top, its seperate to the head ?

How do i know if i have the right cams. The cams i have seen come out of an lancia ypsilon 1.2 16valve engine with 86 hp witch is the same as the mk1 punto engine.

You really, really, need a workshop manual to do this job. (The Haynes is OK.) And "special tools" to set the valve timing. This is not a non interference engine. Get it wrong and carnage may follow.

Head is effectively two seperate castings. One part holds the cams, one part holds the valves and cam followers.

Only way to be sure that you've the "right" cams is to measure valve lift. The Punto line was, historically, organised on "fit what's available, keep the line going" rules.