What is the torque specifications for isuzu 4HG1 crank shaft, head and short motor

The correct head and block settings for an Isuzu KB 260 4ZE1 petrol engine will depend on the specific model and year of your vehicle. It is generally recommended to refer to the manufacturer's specifications or a repair manual for the specific head and block torque settings for your engine.
In general, the head bolts on an Isuzu 4ZE1 engine should be tightened in a specific sequence and to a specific torque specification. The block bolts should also be tightened in a specific sequence and to a specific torque specification.
It is important to follow the manufacturer's specifications and torque the head and block bolts to the correct specification to ensure proper engine function and to prevent damage. If you are unsure about the correct head and block settings for your engine, it is recommended to seek the assistance of a professional mechanic or refer to the manufacturer's specifications.

Question edited for 'make model (what it is)'.
Question moved to category.

In the link

https://www.google.com/search?q=4hg1+engine+valve+clearance

For all 615, 616 (4cyl) and 617 (5cyl) through 1985 model year is:
cold intake 0.10mm or .006in
exhaust 0.35mm or .014in
hot intake 0.15mm or .007in
exhaust 0.40mm or .016in

https://barringtondieselclub.co.za/isuzu/4h.html

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https://toolsnyou.com/ you could get the solution of our problem from the given site.

I need all the specs of Isuzu npr 4hg1 engine.Cylinder head bolts torque, crankshaft bolts torque, connecting rod caps bolts torque
.

https://www.google.com/search?q=cylinder+head+bolt+torque+specifications+for+a+1998+2.2+Isuzu+pickup&biw=1361&bih=650&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwivsbG5j7vQAhUK6yYKHcJlDfwQsAQIGg#tbm=isch&q=Where+is+the+speed+shaft+sensor+located+on+2013+ford+f150+pickup

Hope this helps

there are 2 bolt sizes
for 14 mm studs first step round is 98 nm
second step round is 147 nm
last step round is +60 degrees
the 10 mm bolts ( the 2 rear bolts)
step 1 38 nm
one step only
go on google --type in kiwicylinderheads.com and get the tightening sequence and other important information

Isuzu does not list specific torque values for these fasteners. When this is the case, you are expected to use standard torque values. These can be found on the chart I have linked below. Be advised that bolt sizes go by the diameter of the shaft [round shaft portion] of the bolt or stud, NOT the hex head [socket size] of the bolt or nut. Partially remove the bolts so that you can measure the shaft and obtain the correct torque from the chart. See


https://www.swtc.edu/ag_power/diesel_engines/lecture/metric%20torque%20values.pdf

Don't condemn the head just yet.

When the timing belt breaks, the camshaft stops turning, so the relative position of valves doesn't' change if you try cranking the motor over. Any valves (intake or exhaust) that aren't fully seated will allow pressure to "blow by" that other wise would form the compression you say you no longer have.

What I'm not sure of is if you have an "interference" motor. An referenced motor is one in which the piston can strike a valve head when the timing belt breaks. The clearances are so close that all moving parts have to be in perfect sync in order to operate and not strike one another.

It is possible, with an interference engine, to break valves and / or crack a piston if attempting to crank and the piston comes in contact with an open valve.

If it isn't an interference engine, you shouldn't have any problems. Just get the cam and crank (and any other shaft(s) that may be belt driven) in proper timing, install a new belt, apply the correct tension and you're basically "good to go"

I'd suggest you purchase a vehicle specific repair manual at your auto parts store. It'll contain step by step instructions specific to your vehicle on how to perform this repair.

Good luck!