S2000 Under The Hood S2000 Technical and Mechanical discussions.

Worst valve adjustment ever or...

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Old Dec 8, 2011 | 02:18 PM
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Default Worst valve adjustment ever or...

So last weekend I installed F22C1 retainers/keepers on the intake side of my F20C. Since I had it all apart I did a valve adjustment. After a little mix up with my timing (I attempted to turn the motor over 3 times with each camshaft off a tooth (~6 degrees retarded?) the car started up once the timing was set correctly.

I let it run for a few minutes and it sounded fine. Today I started it up and it sounds like a spun a bearing however my oil level is at the H on both sides of the dip stick on a cold motor. Does this sound like out of spec valve lash or did I manage to really mess something up? I have never done a valve adjustment on an S2000 and I did feel I was adjusting them on the tight side of the spec.


http://youtu.be/UK6fRhWI_Mo

Some other tidbits:

2 weekends ago I did the oil jet bolts. After doing this I drove the car around for 2 days and it didn't have any issues. When I replaced the oil I used full syth Pennzoil platinum. Prior to that, when I first bought the car, I put in half sythn Valvoline. The owner before used regular motor oil.

I replaced the TCT about 5 months ago.

Gas light is on

New spark plugs when I did the retainers

eBay header makes the normal exhaust valve noise more pronouced


Possibilities?
bad valve adjustment
spun bearing
loose lifter
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Old Dec 8, 2011 | 03:00 PM
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Are you sure you adjusted the valves correctly? When I did mine I used this walkthrough
Walkthrough

You don't actually have to jack the rear and rotate the tire you can just rotate the crank shaft. But I'm sure you knew that
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Old Dec 8, 2011 | 03:04 PM
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Originally Posted by s2klariat
Are you sure you adjusted the valves correctly? When I did mine I used this walkthrough
Walkthrough
I put it back together correctly I'm not sure if what I consider "drag" to be the same as what the shop manual says. I felt like everything I adjusted had drag. I think I adjusted everything to be too tight.

What I am looking for is that the sound in the video, is that valve sound or bearing sound?
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Old Dec 8, 2011 | 03:09 PM
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Hard to say. Let the car cool off overnight and do a valve adjustment. Make sure one size up from the spec you are using will not fit and the one at spec will. Easiest way since drag is vague.
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Old Dec 8, 2011 | 03:11 PM
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Originally Posted by importkid
Hard to say. Let the car cool off overnight and do a valve adjustment. Make sure one size up from the spec you are using will not fit and the one at spec will. Easiest way since drag is vague.

I tried that and with enough effort I could jam a .011inch into the intake and a .012 into the exhaust

maybe i shouldn't be so forceful?
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Old Dec 8, 2011 | 03:22 PM
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I don't think you have a spun bearing, the noise would be much worse and more pronounced than that. I e think you messed up the valve adjustment and made things louder. I set mine on the tight end of the spec. because I plan on checking them every couple of years, I think you set yours too wide if you could fit those feeler guages in the gap. Do another adjustment and make sure it is done on a dead cold engine and go with the tighter end of the clearance specs.

I also find that aftermarket headers allow more exhaust valve noise to be heard , which is a tick type noise. Thin walled headers without heatshields will do that as compared to the oem header.

Lastly, you wouldn't be the first person to have a TCT go bad shortly after replacing a defective one, they are such poorly designed/built parts.

Good luck with getting things resolved.
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Old Dec 8, 2011 | 03:22 PM
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Guess your next step is to drain the oil and look for metal particles. Much safer than running it over and over. You will see debate, but I find you actually need to pay attention to cam angle for the adjustment instead of just getting the lobe off the valve.
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Old Dec 8, 2011 | 03:23 PM
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Thanks guys. I guess I know what I'll be doing this weekend

Any other input will be appreciated
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Old Dec 8, 2011 | 05:37 PM
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im pretty sure its not a spun bearing. i would not run it anymore until you let it sit overnight and re-check valve adjustment
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Old Dec 9, 2011 | 03:33 AM
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brand of plugs, torqued and gapped proper? everything put back together right?
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