Technical camshaft swap?

[Luno70]

This is really a question for the Sei/Cinq sub, but apparently there are all rusted away so the sub is dead! What I want to know is if a cam from a Punto mk2 1242 model year 2000 still should fit in an older mk1 1108 Fire engine. Have any of you Punto guys tried to put an older more aggressive mk1 cam in your Punto, did it fit?

My original post over at Sei/cinq sub: swapping-punto-60-mk2-1242-mpi-cam-into-1108-mk1-head (can't post links, too green)

 

[Ziggy122]

There are 2 cams
P60 which is in the 8vs
P75 which is the more agressive lobe setup

Id probably do it - if it dont cause the engine to be an intererance engine
But i am lead to believe that with new bearings its a straight fit?

But it has been discussed before

Ziggy

 

[Luno70]

Thanks, that was what I needed to know
What I'm doing is actually an economy down tuning. I intent to put the lower lift, less overlap cam from the newer euro3 Punto in my Seicento 98' to get better city mileage. It will improve low end torque but also theoretically increase the risk of knock at low rpm. The seicento has no knock sensor, but ignition timing is conservative and doesn't change much through the map and does't run excessive advance to begin with, so that's is not a worry. I'll call up the guy who has a head for sale!

 

[Luno70]

Just for posterity: Did the swap today and everything fit effortlessly. Smoother idle. Will take a drive and check consumption and give the ECU a chance to learn its new muscle. got valve clearance sorted while I was there. Funny thing is that the Punto mk2 has 0.30 and 0.40 for intake and exhaust valve clearance, however the centos have 0.40 and 0.50 and I didn't have shims to change it, so I kept the standard clearance, which means that the overlap is even less than the two degrees for that cam. Sped up to 4000 rpm easily, so I should be covered for highway driving still!