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Re: ever hear a sound like this?
[Re: Paul_Fancsali]
#1186590
02/28/12 07:02 PM
02/28/12 07:02 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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After some further inspection, the valve guides are not all that tight afterall. every one of the left bank is loose enough to fall though from their own weight. the #6 exhaust was tight, but after pushing it all the way in, and then back out, it's now loose enough to "fall through" I'm going to go back and double check the #2 exhaust to see if it's the same way, if maybe there's a speck of dirt or something thats making it a little snug. so right now, 7 of the 8 valves on the even cylinders are loose enough to fall through the guide from their own weight. here's how the pushrods look--the only sign of rubbing anywhere is on the guideplates that are secured by the studs that hold the rocker arms.     Still have the left/odd bank to go down...
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Re: ever hear a sound like this?
[Re: 70Cuda383]
#1186591
02/28/12 07:05 PM
02/28/12 07:05 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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and, continuing the theme of my awesome luck... one of the rings on a valve seal broke.
I could replace it with one I have on the shelf here, but they are just a rubber cone, no rings.
if this one still holds tight to the valve and doesn't come up off the guide with the valve, would you run it, or replace it now?
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Re: ever hear a sound like this?
[Re: rickraw]
#1186593
02/28/12 07:15 PM
02/28/12 07:15 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Quote:
those don't look like they would cause the noise. how's cam end play??
I haven't pulled the timing cover back off yet, but if opening up the guide plates does nothing, I'll do that next.
what SHOULD the cam end play be? It has a plate that holds it in place, the only thing that really holds the cam is that plate that holds it from coming out the front, and the gear bolted to it that holds it from pushing in.
(edit, just looked it up, .002-.010)
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Re: ever hear a sound like this?
[Re: Moparnut426]
#1186597
02/28/12 08:25 PM
02/28/12 08:25 PM
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Joined: Mar 2006
Posts: 9,814
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,814
MI, usa
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Quote:
I have heard a similar noise from a chain tensioner in the timming set dry, dont know if your running that or not. Also have heard the converter bolts being a tad slightly loose, and causing a swueak. That was in a 4x4 truck, and he used lock tight and didnt really tighten them up good and tight, and they didnt bounce and knock, but squeaked a tad at idle.
Im sure you greased the oil seals before putting it together, or at least lubed them a bit, cause you would have burned the seal up if it was that dry and have oil everywhere. Also have replaced a few OE magnum distributors for a partially siezed/bent shaft causing the same noise.
Good luck, and BTW did ya take the drive belt off???
LOL 
Kasey
Not true on the seals making the noise leaking. Every one I had was dry with absolutely no seepage.
Doug
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Re: ever hear a sound like this?
[Re: dvw]
#1186598
02/28/12 08:31 PM
02/28/12 08:31 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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It definitely sounds to be central to rear of the engine. Sprayed WD40 in the distributor and put dielectric grease on the contacts of the distributor rotor and cam position sensor. No change. And there's absolutely no wobble/play in the distributor shaft Tomorrow I'm going to pull the intake to look at the roller lifters. Maybe a roller is going bad  It's DEFINITELY not up front by the timing cover or dampner.
Last edited by 70Cuda383; 02/28/12 08:33 PM.
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Re: ever hear a sound like this?
[Re: Paul_Fancsali]
#1186601
02/28/12 11:20 PM
02/28/12 11:20 PM
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Joined: Jun 2009
Posts: 233
vashon island washington
hunterstroble
enthusiast
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Posts: 233
vashon island washington
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possible a wrong cam bolt to thick hitting the cover? That happened to me once and it sounded similar. I doubt it but I was sure suprised to see what my noise was when I found it.
1969 Dodge dart 500 stroker
1973 Dodge Challenger 440
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Re: ever hear a sound like this?
[Re: 70Cuda383]
#1186602
02/29/12 09:20 AM
02/29/12 09:20 AM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
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Cincinnati, Ohio
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Quote:
and, continuing the theme of my awesome luck... one of the rings on a valve seal broke.
I could replace it with one I have on the shelf here, but they are just a rubber cone, no rings.
if this one still holds tight to the valve and doesn't come up off the guide with the valve, would you run it, or replace it now?
I would use a peice of safety wire to hold that valve seal on. For the record, I'll bet there's nothing wrong with the valve guide clearance. I bet the noise is coming from the chevy guide plates.
When I installed my first set of Edlebrock heads, the guy on the tech line told me to run 1.5 rockers and use the cam with the lift and duration that I want. That way you don't have these issues. 
Sold the 1.6 that I had and went with 1.5 crane gold rockers, all is well many years later.
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Re: ever hear a sound like this?
[Re: Challenger 1]
#1186603
02/29/12 09:59 AM
02/29/12 09:59 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Quote:
Quote:
and, continuing the theme of my awesome luck... one of the rings on a valve seal broke.
I could replace it with one I have on the shelf here, but they are just a rubber cone, no rings.
if this one still holds tight to the valve and doesn't come up off the guide with the valve, would you run it, or replace it now?
I would use a peice of safety wire to hold that valve seal on. For the record, I'll bet there's nothing wrong with the valve guide clearance. I bet the noise is coming from the chevy guide plates.
When I installed my first set of Edlebrock heads, the guy on the tech line told me to run 1.5 rockers and use the cam with the lift and duration that I want. That way you don't have these issues.
Sold the 1.6 that I had and went with 1.5 crane gold rockers, all is well many years later.
well, on the Magnum small blocks, factory ratio IS 1.6, with 1.7s being a common mod to make. so, I don't think I need to go to a 1.5 ratio rocker 
the roller rockers I'm using are 1.6, the factory magnum ratio
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Re: ever hear a sound like this?
[Re: Moparnut426]
#1186608
02/29/12 01:55 PM
02/29/12 01:55 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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problem is that I can't hear it over the noise of the starter, and when you rev it up, the exhaust noise drowns it out. I only hear it when running.
have not found it yet. pulled the starter/inspection cover and there are no signs of wear on the flexplate or cover.
today I'm going to try to eliminate lifters. I'm going to kill a cylinder at a time, unplug the injector so it's not shooting fuel, remove the spark plug so it's not building compression, and then remove intake/exhaust valve train one at a time.
Theory being that if it is a squeaky roller lifter, by taking the pressure of the valve spring off of it, that the noise might go away.
if that fails and I still hear the noise after releasing the load on all 16 lifters, one at a time, then I'm afraid I'm out of ideas on what to check, and will be forced to start taking stuff apart/off.
can a main bearing squeak like that? if a main was going bad/gone, wouldn't my oil pressure take a hit? pressure is solid and steady.
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