Nissan Repair Questions? Ask a Mechanic for Answers ASAP
did you set the two top compression ring gaps at 180degrees of each other?
how much oil is it useing?
what grit did you hone the cylinders?
we just started it up tonight and it is burning oil out the pipe. we took plugs out and there is oil on all 4 plugs.
we ran it for about 1/2 hour.
does it smoke really bad?
it will not go over 1800 rpm.
no not real bad.
it starts rattling we you give it more gas.
bottem or top end rattle?
tell me...does it have allot of blow by from the oil cap....[crank case pressure]?
it sounds like it is loading up with
no not at all.
that looks normal.
it idles great.
does it rev well?
no it does not. will not go above 1800rpm. with out rattling on the head.
ok,,,,i can give you a though here
i think you need to run it more
sometimes when you have the engine apart like this
the lifters[hydrolic] tappets will go down
i build engines alot this is the first time i had trouble like this.
it may build up and quieten after the engine gets hot and the oil gets thin after a while
i cut new rings with my ring filer. all at the lo end of the spec. even the oil ring.
depending on the honeing rocks used...
i just took the glaze out of it.
i got .20" oversized rings and cut them to each cylinder.
i would think you used a hard chrome moly rings here
could the block be bad.
it really needed to be honed rough
well it could...but i doubt it
i did hone it rough.
no just the glaze?
there was crosshatch pattern on the walls.
i made sure.
it needed to be rough...
these rings are hard
i used the flat rock stones for the hone.
if the cylinders are oval shaped any,,,it takes a while for the rings to cut the cylinders to fit
should we keep the car and run it more.
i think you need to run it though several run cycles
you think the oil is coming up through the new rings.
the rings do not oil by the pump
they are oil by the sling of the crank
this engine has a oil balancer.
i think you need to run it a littlemore before you worry
break it in a little
how much more time.
an hour at a time.
the cylinders and the rings need to wear to fit each other
just drive it nomal
the chrome moly rings are really hard
it will not even go above 1800rpm.
i would advise against using any synthetic oil also
you cant give it the gas at all. it loads up with oil.
and starts to slow down and rattle real bad.
we used 5w30 oil.
loads up with oil?
yes it slows down as you give it gas, and it rattles bad liek it will break.
something on top of the engine, the valves.
do you have oil presure,,,oil getting to the top?
yes plenty of oil on top.
had the engine been really hot before the rebuild?
no it did not over heat.
but i took it apart because it was really burning oil before.
it is alot better. now but still burning oil.
are you sure the rattle isnt a rod?
yes the rod we all out when i did the bearings and the rings. look ok.
ok,,all i can do is give you a though
i took all the plugs out and put a white piece of card board over the top of the plug holes,and cranked the engine, and all four plugs holes spit oil up.
but it doesnt smoke bad?
not real bad but definatly oil.
no not real bad. now.
i never had this problem with engines i have done.
this is a first.
ok..my thought is,,if it isnt a rod making the noise,,lets just start it and let it run,,,it needs to burn the oil out of the pipes,build up the lifters and seat the rings...........
then,,you will need to evaluate it after it has been run more
that sounds good. you might be right.
this is what to try
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the plugs are slightly black.
lets run it more,,,and see what happens
i know the engine was put back correctly.
ok thank you.
3omin,,,dont really tell us much
you are very welcome
i clicked accept already.
am i done.