[Tigers] Tigers Digest, Vol 10, Issue 65

Sun Apr 1 12:31:23 MDT 2018

Doug Jennings may have closed his shop but he still replaces the bushings
and fulcrum pins.  He recently did some for a friend of mine.  Email me and
I will share his new phone number-he still has no email or computer!

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From: Tigers [mailto:tigers-bounces at autox.team.net] On Behalf Of
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Sent: Sunday, April 01, 2018 2:00 PM
To: tigers at autox.team.net
Subject: Tigers Digest, Vol 10, Issue 65

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Today's Topics:

   1. Front end noise (Richard)
   2. Re: Front end noise (Tom Witt)
   3. Re: Front end noise (Ron Fraser)

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Message: 1
Date: Sat, 31 Mar 2018 12:32:21 -0700
From: "Richard" <rcsphx1 at cox.net>
To: "Tiger List" <tigers at autox.team.net>
Subject: [Tigers] Front end noise
Message-ID: <015201d3c926$fd656fe0$f8304fa0$@cox.net>
Content-Type: text/plain; charset="us-ascii"

I have noticed that when I jack up the Tiger, there is a popping noise
coming for the front end, I think that the control arm bushing are binding
on the fulcrum pins. After lowering the car, pushing up and down on the
front end causes the popping noise until they seem to settle back to the
normal position.  No popping can be heard in normal driving.  Is this
condition cause for great concern?  The car has about 42,000 miles and is
driven about 400 miles a year.

According to the workshop manual removal requires some very special tools
that won't mess up the control arms. (I have no such tools)

What would be the best course of action, and or, does anyone know of someone
in Phoenix, AZ area that would be able to help.

Thanks,

Richard

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Message: 2
Date: Sat, 31 Mar 2018 13:34:20 -0700
From: "Tom Witt" <atwittsend at verizon.net>
To: <tigers at autox.team.net>
Subject: Re: [Tigers] Front end noise
Message-ID: <39F74EEACE74450492706CBEEC86B0B1 at user1PC>
Content-Type: text/plain; charset="utf-8"

The bushings are rubber and designed to flex as the arm moves through its
motion. There is nothing about them intended to be a true rotating bushing.
The problem is likely a combination of two things. The rubber bushings have
hardened and don?t flex well. This puts the stress on the fulcrum pins
beveled washer which can work loose. The end result is that the washer where
it meets the fulcrum pin is rotating when enough force is applied. Hence the
popping sound. This condition (where the washer rotates on the fulcrum pin)
work hardens it and has been attributed to fulcrum pin failure.

DO AT YOUR OWN RISK:
It is advisable to properly replace the bushings. They are likely VERY old.
If the rubber is still pliable you can attempt to see if the nuts on the
fulcrum pin will tighten (but only do so with the car at normal ride
height). As a means of simply testing you can apply oil to the washers and
see it it temporarily stops (or diminishes) the popping. If so then it
likely proved that this is the point of the problem. BUT, just because the
popping may go away or decrease does not mean the problem is solved. It will
only continue to work harden and leave you more susceptible to fulcrum pin
failure.

From: Richard via Tigers
Sent: Saturday, March 31, 2018 12:32 PM
To: Tiger List
Subject: [Tigers] Front end noise

I have noticed that when I jack up the Tiger, there is a popping noise
coming for the front end, I think that the control arm bushing are binding
on the fulcrum pins. After lowering the car, pushing up and down on the
front end causes the popping noise until they seem to settle back to the
normal position.  No popping can be heard in normal driving.  Is this
condition cause for great concern?  The car has about 42,000 miles and is
driven about 400 miles a year.

According to the workshop manual removal requires some very special tools
that won?t mess up the control arms. (I have no such tools)

What would be the best course of action, and or, does anyone know of someone
in Phoenix, AZ area that would be able to help.

Thanks,

Richard

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Message: 3
Date: Sun, 1 Apr 2018 11:24:56 -0400
From: "Ron Fraser" <rfraser at bluefrog.com>
To: "'Richard'" <rcsphx1 at cox.net>
Cc: tigers at Autox.Team.Net
Subject: Re: [Tigers] Front end noise
Message-ID: <000001d3c9cd$99fc3e00$cdf4ba00$@bluefrog.com>
Content-Type: text/plain; charset="us-ascii"

Richard

                The noise is probably normal but we on the List are long
distance help, we cannot accurately evaluate your situation long distance.

The problem with noise in the suspension is that a noise will resonate
throughout the assembly making it very difficult to isolate to a single
component.

1st inspect the condition of all the rubber bushings and the condition of
all the suspension parts - if everything is satisfactory then you should be
OK.

To isolate the noise you will need to disassemble parts of the suspension.

Take the sway bar off 1st to see if those rubber bushings are part or all of
the noise.

Remove the nuts for the lower shock mounts to see if the shock bushing is
part of the noise.

At this point you would need to disassemble the front suspension and remove
the spring.  Since I don't know if you want to go that far I will say stop
disassembly.

You could loosen all the A arm nuts to see if that helps with the noise plus
you could put some oil in there to see if that helps.   Be sure you tighten
the nuts with the weight of the car on the front suspension so the bushings
are not in a bind.

The special tools for replacing the A arm bushings can be made from heavy
wall steel tubing or black iron pipe.   I did that many years ago using my
vise, hacksaw and file.   You will also need a press capable of doing this
job.

I hope we are helping you with your concern

Ron Fraser

From: Tigers <tigers-bounces at autox.team.net> On Behalf Of Richard via Tigers
Sent: Saturday, March 31, 2018 3:32 PM
To: Tiger List <tigers at autox.team.net>
Subject: [Tigers] Front end noise

I have noticed that when I jack up the Tiger, there is a popping noise
coming for the front end, I think that the control arm bushing are binding
on the fulcrum pins. After lowering the car, pushing up and down on the
front end causes the popping noise until they seem to settle back to the
normal position.  No popping can be heard in normal driving.  Is this
condition cause for great concern?  The car has about 42,000 miles and is
driven about 400 miles a year.

According to the workshop manual removal requires some very special tools
that won't mess up the control arms. (I have no such tools)

What would be the best course of action, and or, does anyone know of someone
in Phoenix, AZ area that would be able to help.

Thanks,

Richard

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End of Tigers Digest, Vol 10, Issue 65
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