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Gunga Galunga
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Did I screw up my Valve Adjustment?
I did a valve adjust and switched from delo 15w40 to VR1 20w50. I had a detectable-only-by-me tick that was bugging me because I had never heard another 3.2 tick like that. Well, now its worse. This is my second valve adjustment and I really don't want to believe that I f***ed it up.
I only spent all day on this... ugh ![]() https://youtu.be/r2HO2_kMMJ4 https://youtu.be/9eLH1EfY_9g https://youtu.be/bSscG8ZaP3o |
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Registered
Join Date: Nov 2002
Location: venice ca
Posts: 928
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i can hear some stuff going on, its not terrible but i dont know what it sounded like before.
what i would do is switch to brad penn 20-50. get it on ebay. go back and redo the valve adjustment and have some spare feeler gauges. dont get hung up on the drag of the gauge when its between the valve stem and the rocker. remember the adjustment is .004 +-.002. so when youre going for the final adjustment make it tight, it sounds like your being careful which is good but make them good and tight and they will shut up. also what you could be hearing is worn valve guides, so after the tight adjustment there might be some clicking going on. that engine sounds good though i dont think you have anything to worry about
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Jason 81 SC 97 328is 87 Jeep Comanche (RIP) |
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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VR1 is fine as long as you dont have a cat on the car.
did it get worse as soon as you were done or did it get worse over time. if it got worse as soon as you were done, do as above. as long as you can get the feeler in it is not too tight. you want some drag or for it to be tight fit. that is how you get them consistent. when doing it, do not losen the lock nut all the way. if lose- hold the adjuster and turn the nut just a little. turn both nut and adjuster CW using the angle of the slot as a gauge to how much it is turned. if tight- turn both CCW then hold the adjuster and tighten the nut. make small changes noting the angle of the slot. make 1/8 degree turns then check. when done rotate the crank several times and go back thru them. you dotn need to drain the oil. only a little will come out.
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86 930 94kmiles [_ ![]() 88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ ![]() 01 suburban 330K:: [_ ![]() RACE CAR:: sold |
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Gunga Galunga
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Quote:
I tightened them by leaving the gauge in while I tightened the adjusters. They were mainly too tight (could not get the feeler in). The loosen/tighten thing I figured out eventually. Pretty much what I did. I did a check run after with the gauge, had to adjust #5 an eight of a turn. The clapping seems to be coming from the drivers side though. I developed a valve guide hypothesis as well, since it is worse than before I would guess it is not the source of the noise??? |
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Troll Hunter
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You're better than me..I can't even hear it.
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1978 SC Coupe, Gris Argent Metallic Silver 1988 FJ62 Blue/Gray 2020 M2 CS |
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Gunga Galunga
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Last edited by doublebuffle; 07-12-2015 at 03:21 PM.. Reason: new url |
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Gunga Galunga
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Registered User
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Quote:
When you have a gap you will get a tick noise, setting valves tight will help reduce the noise, bad side is that when the valves and seats wear and they will, then the valves stay open. Not good when this happens, go 4 + 2 and Learn to like the tick, when it quits, you know it's time to run them again. |
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Straight shooter
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I can hear it. One is a smidge loose or there's a bad elephants foot. Consider using a stethoscope to isolate and save time?
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“Of the value traps, the most widespread and pernicious is value rigidity. This is an inability to revalue what one sees because of commitment to previous values. In motorcycle maintenance, you MUST rediscover what you do as you go. Rigid values makes this impossible.” ― Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values |
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Gunga Galunga
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I know that .006 is "within tolerance", but are you saying that this is better than .002? |
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Registered User
Join Date: Aug 2014
Posts: 60
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Doublebuffle, I just went through this. Below is the thread with some video for comparison if the helps you. Your overhead video sounded good to me. The vid of the exhaust valves does sound a bit noisy, but I am no expert and that is why I asked for help on P. It is a lot of work I know, but if you are going to second guess yourself, you might be better off doing it again for your own piece of mind. Good luck.
Valve / Engine Sound. What do you think? |
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Registered User
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The closer you are to zero the closer you are to your valves not closing all the way, short answer, yes.
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Gunga Galunga
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Big progress.
I did half of the valve adjust over again, only the six intake valves. Reasons for only those: 1. Harder than exhaust and mostly likely that i screwed them up. 2. The idea of spending a lot of time with the car half in the air was not appealing to me... (alone and very 'cautious' in my one car garage). It sounds much better, we are back to detectable-only-by-me tick which of course; could easily be the expected valve guide wear. The rockers are pretty tight. We are in "I can manage to get the feeler gauge in" territory. I imagine that engine builders probably do this by feeling the play in the rocker movement. You can almost tell by rocking them back and forth when it's "right". Ok, I can do videos if you want, let me know. EDIT: I plan on doing exhaust too. No need to waste the oil though. ![]() Last edited by doublebuffle; 07-13-2015 at 04:25 PM.. |
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Brew Master
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check out the backside method. I've done it twice on my car now with the engine in and twice with the engine out. It's really not that hard unless you have headers in the way.
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Gunga Galunga
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Amazon.com: K-D Tools 161 Deluxe Feeler Gauge: Home Improvement Would this work? |
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Registered User
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Put it in, snug it and lock it then move on. |
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Gunga Galunga
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Quote:
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Gunga Galunga
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83 911 Production Cab #10
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No
If you are doing the back side (Go/No-Go: Pelican Technical Article: 911 Valve Adjustment - The Backside Method), get the 12" version of the .0025 (Go, # PEL-LM-0025) and .003 (No-GO, # PEL-LM-003). If you are doing the normal, its the .004 that you have been using.
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Who Will Live... Will See ![]() ![]() ![]() 83 911 Production Cab #10, Slightly Modified: Unslanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger |
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