87 4kq 5cyl, ticking noise from manifold

[Ameer Antar]

Holes in metal tend to open up, not close w/ heat. If you take a metal
plate w/ a hole in it just smaller than a ball bearing and heat it up, you
can make it pass through the hole when you heat up the plate. Cooling the
plate w/ the bearing inside will lock it in the hole. This is a trick they
used in physics class to prove that point. This sounds exactly like my old
exhaust manifold tick that started when it cracked. This is very common,
esp. on the turbo cars, but definitely possible for a lean burning n/a
engine too.

-ameer

At 12:14 PM 11/22/2002, you wrote:

>Date: Fri, 22 Nov 2002 09:33:29 -0600
>From: "Cade Carvell" <ccarvell at nbsusa.com>
>To: <quattro at audifans.com>
>Subject: Fwd: RE: 87 4kq 5cyl, ticking noise from manifold
>
>But would it go away when the engine was warm?  I suppose if it was a
>small leak, the expansion of metal could therotecialy close the leak.
>Not a bad point.
>
>
>Cade Carvell
>National Business Systems, Inc.
>2919 West Service Road
>Eagan, MN 55121
>Office: 651-994-4400
>
> >>> "Chander Balakrishnan" <balakrishnan3 at attbi.com> 11/22/02 09:17AM
> >>>
>Could it be the exhaust manifold instead of intake manifold ? I had the
>same
>symptoms, it turned out that 2 studs were broken in the EM.