<VV> Help with a sound
Bob Gilbert 1
bgilbert at gilberts-bc.ca
Tue Apr 15 12:39:24 EDT 2014
Now that's one I had not thought of! Thanks!
From: yenko117 at yahoo.com [mailto:yenko117 at yahoo.com]
Sent: April 15, 2014 2:57 AM
To: Bob Gilbert 1
Cc: <virtualvairs at corvair.org>
Subject: Re: <VV> Help with a sound
Wonder if a head stud turned in a little during install and now with the
motor loosening up just a little with break-in... it's making contact.
Sent from my iPhone
On Apr 15, 2014, at 12:18 AM, "Bob Gilbert 1" <bgilbert at gilberts-bc.ca>
> I have a freshly rebuilt 3.1 with 4 carbs in my UltraVan. The heads
> were done by Ray Sedman and he also provided most of the bits and
> pieces. So it's good quality work and bits and pieces!
> I have about 500 miles on the engine and out of the blue it developed
> a rattling, metallic sound reminiscent of a sticky lifter but with a
> harsher metallic "rap", more like pieces of metal hitting each other.
> I have adjusted the lifters, both hot and cold and the sound persists.
> I've tried to isolate it and it appears to be coming from cylinder 2
> but I'm not absolutely certain
> I thought maybe a valve problem(lifter, seat, etc.) but I have a
> 185 pounds compression on all cylinders and the its starts and runs
> well, except for this sound. Its loud enough that I really don't want
> to do any camping trips in case I make a bad situation worse and/or get
> I seriously injured my back last year so I really don't want to pull
> the engine out except as an absolute last resort.
> So I'm looking for suggestions on:
> a) isolating the sound, which might in turn lead to a solution. I have
> tried the broom stick to the ear but that didn't work (probably
> because I'm partly
> b) My gut still says it's a lifter problem but I need advice on
> troubleshooting to specifically indicate a bad lifter or otherwise
> rule out a bad lifter.
> c) any other ideas or suggestions
> Bob Gilbert
> UV 404
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