PLEASE look inside!! Motor problem that i cant figure out
Originally Posted by joeycoates
Cool 
I did not know if you understood what I was getting at, but with some DSM experience you probably have an idea. Assuming that the timing belt pulley is still connected to the crank (and I do not see why it would not be) I am going to stick with my guess that a shaft is frozen and that the crank pulley stripped that part of the belt. If so the crank would turn over, the cams woould not spin, and the belt would be very difficult to pull out if it is still engaging the frozen balance shaft pulley....
I did not know if you understood what I was getting at, but with some DSM experience you probably have an idea. Assuming that the timing belt pulley is still connected to the crank (and I do not see why it would not be) I am going to stick with my guess that a shaft is frozen and that the crank pulley stripped that part of the belt. If so the crank would turn over, the cams woould not spin, and the belt would be very difficult to pull out if it is still engaging the frozen balance shaft pulley....
Originally Posted by Fireball
Umm, WHY is your timing belt cut in half? IF you did that I still have to ask why?
You will need a LOT more than just a piston... most likely the rod for the piston, and the rest of the piston assembly... not to mention some head work... those valves do NOT look seated at ALL. Hopefully you can get them out, without damaging the valve guides.
You will need a LOT more than just a piston... most likely the rod for the piston, and the rest of the piston assembly... not to mention some head work... those valves do NOT look seated at ALL. Hopefully you can get them out, without damaging the valve guides.
here is the problem, i dont know the 4g63 that well so if you know what this is you will know my problem, its circled in red. that locked up and will not turn, it was holding the timing belt from turning at all!!!
It will have to go to a machine shop to really get an idea of the damage. My guess would be at least new valves, possibly guides, maybe pistons, balance shaft (unless you eliminate them) and possible new oil pump. And the machine work, gaskets, labor.....
Sorry to hear about the motor. Same thing happened to mine. Balance shaft seized because I was low on oil. Went through the same thing, and ended up with a complete long block motor swap.
Originally Posted by number 8
Sorry to hear about the motor. Same thing happened to mine. Balance shaft seized because I was low on oil. Went through the same thing, and ended up with a complete long block motor swap.
Umm, if that's the front balance shaft sprocket, where's the oil pump sprocket?
I've looked through my service manual and from everything I can see, that appears to be the oil pump sprocket that you have circled there.
I've looked through my service manual and from everything I can see, that appears to be the oil pump sprocket that you have circled there.
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From: IN
Originally Posted by Fireball
Umm, if that's the front balance shaft sprocket, where's the oil pump sprocket?
I've looked through my service manual and from everything I can see, that appears to be the oil pump sprocket that you have circled there.
I've looked through my service manual and from everything I can see, that appears to be the oil pump sprocket that you have circled there.
I think this sprocket drives both balance shaft and the oil pump.
That is what the diagram shows. Balance shaft alone does not have a sprocket on it. The BS that turns the oil pump gear does which is what is pictured. It may be that the oil pump ceased, period.
Originally Posted by BadazzCR
My guess would be the lightweight crank pulley allowed the crank to vibrate more than usuall wiping the bearing tolerances, which in turn lowered your oil pressure. To a point that caused the head to seize, and break the timing belt, which stopped your motor from runing.
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It seems his oil pump or balance shaft seized as a result
The stock harmonic dampner serves a very valuable purpose - that is why i still have it on my race car
Originally Posted by Fireball
Umm, if that's the front balance shaft sprocket, where's the oil pump sprocket?
I've looked through my service manual and from everything I can see, that appears to be the oil pump sprocket that you have circled there.
I've looked through my service manual and from everything I can see, that appears to be the oil pump sprocket that you have circled there.
Originally Posted by TTP Engineering
That is what the diagram shows. Balance shaft alone does not have a sprocket on it. The BS that turns the oil pump gear does which is what is pictured. It may be that the oil pump ceased, period.
Last edited by VTECH8TR; Dec 12, 2005 at 03:47 PM.