[DeTomaso] A-arm bushings...should they require machining?

Fri Sep 22 11:01:58 EDT 2017

Do you have 16 of those NOS?   although the age would worry me

I just bought 24 since my first concern with the new bushings was the over all length varied.

If you have followed my progress (or lack off), it will be a WHILE before I get the a-arms painted and ready to press back in.

Joe 

From: jgkrenton at comcast.net [mailto:jgkrenton at comcast.net] 
Sent: Friday, September 22, 2017 10:50 AM
To: grayjim; Joseph F. Byrd, Jr.
Cc: Charles Engles; detomaso at server.detomasolist.com
Subject: Re: [DeTomaso] A-arm bushings...should they require machining?

Joe:

I have some NOS bushings (Circa 1985) laying around. With my cheap digital caliper they measure 1.180.  (They are also pretty cold this morning)  I have a Delrin bushings from the same era and they measure 1.179.

.008 inches sounds like an awful lot to press in if they were steel/rubber OEM style, but if they are polyurethane that probably isn't too bad.

Others may have better advice.

Jeff/2467

  _____  

From: "grayjim" <grayjim at cox.net>
To: "Charles Engles" <cengles at cox.net>, "Joseph F. Byrd, Jr." <byrdjf at embarqmail.com>, detomaso at server.detomasolist.com
Sent: Friday, September 22, 2017 7:08:00 AM
Subject: Re: [DeTomaso] A-arm bushings...should they require machining?

Dear Chuck,

I had the same experience. Rubber hard to get out, urethane easy to install.

Any driving scheduled for the weekend? I have to go to Duncan on Sat for a 
funeral.

Jim Gray

-----Original Message----- 
From: Charles Engles
Sent: Thursday, September 21, 2017 8:11 PM
To: 'Joseph F. Byrd, Jr.' ; detomaso at server.detomasolist.com
Subject: Re: [DeTomaso] A-arm bushings...should they require machining?

Dear Joe,

                    I  don't know.

                    I do know that twenty odd years ago when I converted
both Panteras to polyurethane bushings from Pantera Performance Center, they
went in with just finger/hand pressure.  No press needed.   Obviously, they
must have been smaller than yours and I don't understand why there is such a
great difference.

                                      Puzzled,  Chuck Engles

-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
Of Joseph F. Byrd, Jr.
Sent: Thursday, September 21, 2017 5:32 PM
To: detomaso at server.detomasolist.com
Subject: [DeTomaso] A-arm bushings...should they require machining?

I have removed the bushings from the front A-Arms and have found their ODs
to be a consistent 1.184".   the A-arm bore IDs varied slightly around
1.181".   this makes sense as the IDs would be 30mm with the bushings
oversized for MY expected press fit of ~ 0.003".

NOW, the new bushing ODs vary around 1.189".   to ME, that is way too much
press and could plastic yield the A-arm bores.

Is it expected to machine the new bushing ODs?  (Pretty common practice for
new parts to be oversized for field fitting  in the machines I use to work
to allow for possible damage/wear.)

OR

Throw away the micrometers and get a bigger press?

Joe/5177

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-------------- next part --------------
   Do you have 16 of those NOS?   although the age would worry me

   I just bought 24 since my first concern with the new bushings was the
   over all length varied.

   If you have followed my progress (or lack off), it will be a WHILE
   before I get the a-arms painted and ready to press back in.

   Joe

   From: jgkrenton at comcast.net [mailto:jgkrenton at comcast.net]
   Sent: Friday, September 22, 2017 10:50 AM
   To: grayjim; Joseph F. Byrd, Jr.
   Cc: Charles Engles; detomaso at server.detomasolist.com
   Subject: Re: [DeTomaso] A-arm bushings...should they require machining?

   Joe:

   I have some NOS bushings (Circa 1985) laying around. With my cheap
   digital caliper they measure 1.180.  (They are also pretty cold this
   morning)  I have a Delrin bushings from the same era and they measure
   1.179.

   .008 inches sounds like an awful lot to press in if they were
   steel/rubber OEM style, but if they are polyurethane that probably
   isn't too bad.

   Others may have better advice.

   Jeff/2467

   _______________________________________________________________________

   From: "grayjim" <[1]grayjim at cox.net>
   To: "Charles Engles" <[2]cengles at cox.net>, "Joseph F. Byrd, Jr."
   <[3]byrdjf at embarqmail.com>, [4]detomaso at server.detomasolist.com
   Sent: Friday, September 22, 2017 7:08:00 AM
   Subject: Re: [DeTomaso] A-arm bushings...should they require machining?

   Dear Chuck,

   I had the same experience. Rubber hard to get out, urethane easy to
   install.

   Any driving scheduled for the weekend? I have to go to Duncan on Sat
   for a
   funeral.

   Jim Gray

   -----Original Message-----
   From: Charles Engles
   Sent: Thursday, September 21, 2017 8:11 PM
   To: 'Joseph F. Byrd, Jr.' ; [5]detomaso at server.detomasolist.com
   Subject: Re: [DeTomaso] A-arm bushings...should they require machining?

   Dear Joe,

                       I  don't know.

                       I do know that twenty odd years ago when I
   converted
   both Panteras to polyurethane bushings from Pantera Performance Center,
   they
   went in with just finger/hand pressure.  No press needed.   Obviously,
   they
   must have been smaller than yours and I don't understand why there is
   such a
   great difference.

                                         Puzzled,  Chuck Engles

   -----Original Message-----
   From: DeTomaso [[6]mailto:detomaso-bounces at server.detomasolist.com] On
   Behalf
   Of Joseph F. Byrd, Jr.
   Sent: Thursday, September 21, 2017 5:32 PM
   To: [7]detomaso at server.detomasolist.com
   Subject: [DeTomaso] A-arm bushings...should they require machining?

   I have removed the bushings from the front A-Arms and have found their
   ODs
   to be a consistent 1.184".   the A-arm bore IDs varied slightly around
   1.181".   this makes sense as the IDs would be 30mm with the bushings
   oversized for MY expected press fit of ~ 0.003".

   NOW, the new bushing ODs vary around 1.189".   to ME, that is way too
   much
   press and could plastic yield the A-arm bores.

   Is it expected to machine the new bushing ODs?  (Pretty common practice
   for
   new parts to be oversized for field fitting  in the machines I use to
   work
   to allow for possible damage/wear.)

   OR

   Throw away the micrometers and get a bigger press?

   Joe/5177

   _______________________________________________

   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
   DeTomaso mailing list
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   use
   the links above.

   Members who post to this list grant license to the list to forward any
   message posted here to all past, current, or future members of the
   list.
   They also grant the list owner permission to maintain an archive or
   approve
   the archiving of list messages.

   _______________________________________________

   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
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References

   1. mailto:grayjim at cox.net
   2. mailto:cengles at cox.net
   3. mailto:byrdjf at embarqmail.com
   4. mailto:detomaso at server.detomasolist.com
   5. mailto:detomaso at server.detomasolist.com
   6. mailto:detomaso-bounces at server.detomasolist.com
   7. mailto:detomaso at server.detomasolist.com
   8. mailto:DeTomaso at server.detomasolist.com
   9. http://server.detomasolist.com/mailman/listinfo/detomaso
  10. mailto:DeTomaso at server.detomasolist.com
  11. http://server.detomasolist.com/mailman/listinfo/detomaso