I get to do a head swap :(

[BaadVR4]

Yea I thought it was weird that not all the valves bent, however odd as it may be the timing of the cams was set just not along with the crank. The motor was not in TDC when set. I can say after I fixed that problem the car ran just not well. After getting a zero compression reading over cylinder 6 I have since removed the head and discovered my stuck/bent valve. The piston looks fine, cylinder wall looks good. I've no reason to believe anything else is wrong other than that valve somehow got bent due to being mistimed and thus is my problem. I will flush and drain the system again and go back over the bearings just to be safe however oil pressure was good when it ran. I think I'm nearing the end of this problem so hopefully I'll have my DD back soon.

Sounds like you're headed in the right direction. Please consider replacing that lifter, it is also possible that the bent valve was caused by the lifter "pumping up" and holding the valve open so that it was tapped by the piston, bending it. Replacing the lifter is cheap insurance against this happening again. Just my 1.5 cents.

[MK_94_3000GT]

Sounds like you're headed in the right direction. Please consider replacing that lifter, it is also possible that the bent valve was caused by the lifter "pumping up" and holding the valve open so that it was tapped by the piston, bending it. Replacing the lifter is cheap insurance against this happening again. Just my 1.5 cents.

I actually replaced the entire head and I'm fully rebuilding the old one. I just don't have time to rebuild it at the moment so I took it from my other car that is a few months away from being finished.

[Mike-92RT]

a valve stuck open could be a lifter stuck up, like coreyb said... there could also be gunk stuck on the valve, the valve could be bent some how, and jammed in the valve guide. Something could also be wrong with the rocker arm.

[CoreyB]

How open are we talking ? Any sign of the piston hitting the valve?

[MK_94_3000GT]

a valve stuck open could be a lifter stuck up, like coreyb said... there could also be gunk stuck on the valve, the valve could be bent some how, and jammed in the valve guide. Something could also be wrong with the rocker arm.

Regardless of what it is that is wrong I am replacing the entire head with a known working head that is ready to go. I will be rebuilding the head for later use.

How open are we talking ? Any sign of the piston hitting the valve?

No sign of piston hitting the valve. Cylinder walls are good, it was not stuck very far open. Car didn't run more than a few seconds in this condition

[MK_94_3000GT]

New head in, just a matter of resetting timing and putting everything back in where it goes. A ton of misc shit that is just annoying Anyway should be up and running soon.

[mh3kgt]

Good to hear. I may be doing a front head swap in the near future as well. Stupid VSS

[MK_94_3000GT]

After delaying for way too long I got it running!!! Bent/stuck valve was the cause of all my headaches. New head in and my car runs great, DR650s are fun!!!! Got my DD back.