Best and easiest way is to set engine at BOTTOM DEAD CENTRE with timing belt cover removed, once crank is at bottom dead centre, remove timing belt and check the valve clearances while turning the camshaft through a full rotation, once you have written down all clearances, pull cam out and set up each valve to correct shim hight, re install cam, turn cam to double check clearances, if ok turn back to bottom dead centre mark, re-install timing belt, and put engine back together.
The reason for setting at bottom dead centre is because all 6 pistons (or 5 in 1pz) will be far enough down the bores so valves cannot contact the pistons.
This is how it states to set clearances in the Toyota factory workshop manual
DO NOT DO THIS. The 1hz is a contact motor. If you turn the cam without the bottom end, ie No timing belt, The valves WILL impact the piston. It states this in the work shop manual. Please, You don't have to believe me, seek your own advise/manual.
If the intake valve shims are the wrong size (too big) they can give you a knocking sound - it is basically exhaust coming back out the intake valve - dont run like that for long. the intake manifold will feel hot just after start up - not from normal engine heat - but from exhaust gas.
i have a 1hz and it has a problem i have put a new head on it and since it has been running it has had a big nocking nosie coming from the rocker cover now would that been caused by the vavle shims or something else
Is that so....then if I wanted to put double batteries for a single battery version (12v) Land Cruiser HZJ 79; What is the best place to install the secondary battery? Is it the right side of the engine bay or the left side of the engine bay behind the factory fitted battery? What will be the practical place of a RHD cruiser?
Pls. advise me!
it depends on where the vehicle is sold, there are three possible locations, there are 3 locations listed in the EPC, two on the left side and one on the right. So it all depends on whether your truck is left and or right hand drive. If 12V it can have one battery on the front position left handside, if 24V (If still made) it can have 2 on the left in LHD vehicles.
I will see what my electronic parts manual says - but I have to try to find it:)
In 2012 Land cruiser HZJ 79; what is the battery placement? (2battery models)
one in left side of the engine bay and other one in right? or both are in left side of the engine bay?
Are they 12V or 24V?