how to tell if valves are bent with head off

[99blueb5]

i have a aeb head i pulled off and is there anyway to ell if the valves are bent? someone told you you can fill the ports with brake clean and if they eak past the valves then they are bent? any other methods

[mwebb]

well first off if your head is pulled off the block alll your valves shld be sitting flush if not somethings bentor u can just pull them out and look at them all

[manufan]

Take it to a machine shop and have it pressure tested.

[1NaudiA4]

well first off if your head is pulled off the block alll your valves shld be sitting flush if not somethings bentor u can just pull them out and look at them all

All of your valves will not be sitting flush. It will depend on where the engine was in rotation when you removed the head.

You would be to tell if a valve was severely bent by just taking the head off but you would have to remove the valves to inspect them further and see if they are slightly bent.

[99blueb5]

the cams are removed so all valves are seated right now

[creechsa4]

to do a quick test, i use wd 40 variant in a manual spray bottle. spray in port. look to see if it leaks. if it comes out quick, it'll be bent or the valve seat needs to be reground. on suspected valves, i'll pull the valve stem in a drill and spin it to see if it's obviously bent. hope this helps.

[ed1380]

way ive done it-
have the head upside down and level.
i used diesel cause it doesnt evaporate as fast, but pout that into the "dish" until its flat with the level of the head and let it sit overnight. if theres any gone in the morning then you might want to take a better look at it

[B5A4Kevin]

the 3 ways i check are:

looking at the piston for valve damage. if there is piston damage there is most likely bent valve(s)

removing the cams and checking for leakage on all cylinders. this can also be used to check valve faces/seats for damage/carbon.

removing the valves (using proper tools) and visually checking (very easy to tell bent from new)

iirc the exhaust valves and the center intake valve are the ones that usually hit, with the latter getting the brunt of the collision with the piston head

[Jake39454]

way ive done it-
have the head upside down and level.
i used diesel cause it doesnt evaporate as fast, but pout that into the "dish" until its flat with the level of the head and let it sit overnight. if theres any gone in the morning then you might want to take a better look at it

Correct

Brake clean out the ports then fill the combustion chambers with fluid of choice (I use oil personally) and look in the ports with a flashlight after a few hours. You will see the fluid reflecting light if there is any leakage.