question Zetor 4911 head gasket thickness 1.2 or 1.5 mm

[gazintheshed]

Hi everyone
I'm rebuilding the engine on my Zetor 4911 3-cylinder and I cant find out which thickness head gasket I should use 1.2 or 1.5 mm any ideas

engine no is 4901-06048
serial no 7168
year 1978

 

[diyfarmer]

Hi everyone I'm rebuilding the engine on my 4911 3 cylinder and I cant find out which thickness head gasket I should use 1.2 or 1.5 any ideas engine no is 490106048 serial no 7168 year 1978

I only worked on a 7340 so the manual says use 1.5 mm head gasket, but someone on this forum previously said only ever use 1.2 mm as it helps with compression

 

[diyfarmer]

The workshop manual says you have to measure the overlap of each piston over the crankshaft if its correct measurement fit a 1.5mm but if its less fit 1.2mm

 

[gazintheshed]

Ok I am guessing that you mean the squish clearance measurement any idea what it should be anyone

 

[diyfarmer]

Ok I am guessing that you mean the squish clearance measurement any idea what it should be anyone

the overlap of each piston in tdc above the crankcase contact surface >= of .35 mm fit a 1.5mm gasket


but as I say this is for a manual for a 7340