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I am stumped on the rattling noise???

 
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Old 02-19-2011, 03:01 PM
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I am stumped on the rattling noise???

Hey guys. Ok so i got my car running last fall. I stopped working on it cause of this brutal winter here in New England. Since the last few days were very nice out, i decided to work on the car a little bit. I never adjusted the valves when i put the car back together so i started with that. I had never done it before. All the valves were very tight. So tight that when i loosened the lock nut of some i saw the valve springs decompress. Finished bring the exhaust to .008 of an inch, and the intake to .006 if an inch. It seems like the rockers have more play than should be. Anyway i pu the valve cover back on and started and have this noise. The noise was not there in the fall. All i have done was mess with the valvetrain. I hope the vid loads up so u can see. I'm pretty sure its not a rod knock cause the noise cuts out in the revs and sounds like its in the head. Rod knock would get louder as it revved i would think and the motor sounds healthy otherwise. No burning metal smells from the exhaust I do have oversize valves and ti retainers. Are those supposed to be lashed tighter than oem? Could this also be spark knock cause the gas is 3 months old or so in the tank and i have type s pistons in there now? Any insight would be great. Trying to figure it out before i pay someone to help out. My father knows a honda mechanic that would come over still but he's like 90 an hr so im trying to put my tax return into brakes and front bumper with other things. Who knows.... thanx PZ!




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Old 02-24-2011, 08:38 PM
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Re: I am stumped on the rattling noise???

i am curious as I have the same noise but engine is all stock. Just bought the car and trying to decide how much of the engine to tear apart, and what to look for. Doesn't sound like a rod knock. Noise doesn't go away when cancelling cylinders either.
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Old 02-25-2011, 12:06 AM
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Re: I am stumped on the rattling noise???

sounds like valves tapping to me
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Old 02-26-2011, 07:11 PM
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Re: I am stumped on the rattling noise???

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Originally Posted by Medicdiver View Post
i am curious as I have the same noise but engine is all stock. Just bought the car and trying to decide how much of the engine to tear apart, and what to look for. Doesn't sound like a rod knock. Noise doesn't go away when cancelling cylinders either.
you shouldnt have to go to far, get the valve cover off and inspect the rockers i guess. maybe your valves are way loose. or even take the oil pan off to see if the rod ends are in tact.



this noise is really starting to irk me good. how much play are the rockers supposed to have after adjustment. mine i can move off the retainer and make the tapping noise by hand. should i try different specs, i know going to tight will burn valves and i dont want that.
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Old 02-26-2011, 07:59 PM
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Re: I am stumped on the rattling noise???

I wouldn't try using different clearances, just pick a size in the middle of the recommended range and get them all as close to this as you can. Always re-check the gap after tightening the lock nuts, you may have to make a few attempts on each valve to get it just right.

If it still ticks it could be caused by:
Wear on Cam, rocker or valve.
Worn/damaged valve guide/s.
Weak or broken valve springs.
Worn/damaged valve seats.

Hope you find the problem,

Ausluder.
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Old 02-26-2011, 09:07 PM
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Re: I am stumped on the rattling noise???

have you driven it since you started it up again ? if not id say take it for a drive and see if it improves . the lost motion pieces are pumped up with oil pressure if the motion lifters are dry this will cause them to tap bad sounds like a bad valve tap ...
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Old 02-26-2011, 11:09 PM
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Re: I am stumped on the rattling noise???

nah, i havent driven it, i have to put new brakes on and i dont have a license, i'll have it back soon though. you know what , lmas could have something to do with it. thanks for the input. everything else in the head is pretty much new. ive made it this far with this motor i'm not giving up/
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Old 02-27-2011, 12:08 AM
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Re: I am stumped on the rattling noise???

alot of guys use the lmas from new preludes that arnt hydro ones when they rebuild there heads . the newer ones were just springs instead of lifter style lmas
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Old 03-08-2011, 09:20 PM
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Re: I am stumped on the rattling noise???

ok so i found out what was making that noise, a chunk of the piston broke! OH MAN WHY?????????? I'm gonna try and get some pics up and maybe get this tread moving. Ive never had a good thread on here. This is gonna be it!!!! STUPID God for saken! Sry im still so mad. Maybe they werent real honda parts or who knows, the head is coming off and im getting this fixed up. So the story to find this. I took off my oil pan today cause i needed to know what i was working with the above video. The car sounded rough. I thought for sure it was the valve train cause that was the last thing that i touched Got it on the ground and saw huge chunks of metal. I thought that i spun a bearing but when i shined a light up into the bores i saw the wrist pin exposed in the number cylinder. How? Wrong pins or poor made part. The box said honda. I started this build like 3 or so years ago and i was so close. Now i got to get a plan. I just bought Brembo blanks and Hawk HPS pads. New projectors for headlights. Not to mention all the other parts that i threw in. Well i'll keep it updated here Pz will get me through this hahah! Thanx for reading!
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Old 03-08-2011, 11:40 PM
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Re: I am stumped on the rattling noise???

ironically my noise was a pair of bad pistons as well. I tore the engine down and found the middle cylinders both pistons were trashed. There were signs that the engine had been apart before. I am thinking someone installed the wrong pistons in it. All four sylinders should have been AAAA. I just got a JDM H22A and installed it. Will finish the last few things tommorrow and see how it runs. Good luck on the rebuild again.
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Old 03-08-2011, 11:41 PM
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Re: I am stumped on the rattling noise???

Piston skirts were all scuffed up and cylinders were scored beyond honing/boring. Will keep the block and maybe build a turbo motor with it for another car.
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Old 03-15-2011, 08:20 PM
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Re: I am stumped on the rattling noise???

yeah that noise was this, just got it running and hear this. how does this happen? WTF.... well got to drudge on and get it running again somehow.
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Old 03-15-2011, 08:36 PM
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Re: I am stumped on the rattling noise???

As previously posted, it sounded like valves tapping.... Where the valves for your setup on the Type S pistons? Maybe they were too big and you were hitting the piston full on rather compressing the air/fuel mix...
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Old 03-15-2011, 08:44 PM
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Re: I am stumped on the rattling noise???

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Originally Posted by wing8806 View Post
As previously posted, it sounded like valves tapping.... Where the valves for your setup on the Type S pistons? Maybe they were too big and you were hitting the piston full on rather compressing the air/fuel mix...
I thought it was too, but the chucks of piston in the oil pan, and the broken piston are evidence of that noise. i took that number two piston out today after taking the head off my motor. That gouge is a result too. It ran too like that. Did the pics show up on the post? I didnt drive it cause the brakes are shot from sitting and i have no license. I just gotta see if that can be bored out 25 and go back to oem. I dont think the type s deals are too big for 1 mm over size valves. I have stick cams and the two never meet in that chamber.
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