General Valve clearnaces

[The Panda Nut]

For the record I just had the valve clearances checked at 6 years and 37000 miles and they were all still perfect.

Our older car is a touch tappety especially when cold so will get checked soon. Its now at 52000 miles and 10 years.

 

[varesecrazy]

I think thats a 1242 ?

Are they both the same mechanically??

The older 55 and 60hp's were pretty durable..
Any adjustments probably wanted doing years before they were checked

 

[timmycm850]

Hi all

Our 60hp 1.2 2005 has had oil changed every year at about 7k miles, now on 95k and still doesnt make any tappet noise to the point that ive never even considered checking them even though ive changed the cam gasket about 3 times due to slight seepage. semi synthetic oil everytime.

Tim

 

[Ricardo Silva]

This engines have valve shims so they tend to become tight not loose, mainly exhaust valves because of the temperature. Those who become tappy are screw/nut valve types not this ones. Never checked my 20yeqrs old Punto with 220000km nor my panda mk2 with 130000km...

 

[babbo_umbro]

Surely the valve clearance is managed hydraulically through oil pressure, so there's no adjustment to be done.

 

[murphyv310]

Are they not shims and buckets like the Imp, Rover 2000 & many other older engines? Exceptionally reliable indeed and adjustment usually never needed unless the head was stripped.

 

[Ricardo Silva]

Are they not shims and buckets like the Imp, Rover 2000 & many other older engines? Exceptionally reliable indeed and adjustment usually never needed unless the head was stripped.

Yes they are shims and buckets just like on most modern engines. In theory they should be checked around 80000km but nobody does that and even official dealers simply ignore this service.

 

[The Panda Nut]

Its a service item at 4 yearly intervals, and yes its shims so I didn't want to get involved. I suppose it really just says the cam wear is fine if they remain good. 20 mins labour was the total cost.

 

[murphyv310]

Allegedly the valve stems can minutely stretch. This reduces valve clearance, certainly never came across the valve clearance tightening on well used Imp engines and I'd suspect modern materials are better.

All modern engines I've encountered have hydraulic lifters that are self adjusting..... Supposedly.