Oh dear,
We now have two different opinions.
Paul says with running engine, Bob Howards says the opposite - much safer
though.
May I have your votes please?
Cheers,
Hans
'71 BGT not been checked on this yet
> -----Original Message-----
> From: Paul Hunt [SMTP:paul.hunt1@virgin.net]
> Sent: Wednesday, October 20, 1999 7:48 PM
> To: Hans Duinhoven; David Councill; mgs@autox.team.net
> Subject: Re: Roller throw out bearing
>
> Yes, as I say "... idle the engine ..."
>
> PaulH.
>
> -----Original Message-----
> From: Hans Duinhoven <H.Duinhoven@simac.nl>
> To: 'Paul Hunt' <paul.hunt1@virgin.net>; David Councill
> <dcouncil@imt.net>;
> mgs@autox.team.net <mgs@autox.team.net>
> Date: 20 October 1999 10:47
> Subject: RE: Roller throw out bearing
>
>
> >Should this test be performed with a running engine?
> >
> >Cheers,
> >
> >Hans
> >'71 BGT
> >> -----Original Message-----
> >> From: Paul Hunt [SMTP:paul.hunt1@virgin.net]
> >> Sent: Wednesday, October 20, 1999 11:19 AM
> >> To: David Councill; mgs@autox.team.net
> >> Subject: Re: Roller throw out bearing
> >>
> >> I think the real reason has got lost in all this, erm, discussion about
> >> roller (spit!) bearings. The cause of the idle drop is probably worn
> >> crankshaft thrust washers. If you idle the engine and have your
> assistant
> >> push the clutch up and down, and if you look at the crankshaft pulley
> and
> >> see it moving back and fore, then it would tend to be confirmed.
> >>
> >> PaulH.
> >>
> >> -----Original Message-----
> >> From: David Councill <dcouncil@imt.net>
> >> To: mgs@autox.team.net <mgs@autox.team.net>
> >> Date: 20 October 1999 03:21
> >> Subject: Re: Roller throw out bearing
> >>
> >>
> >> >This thread has gone on for a day or two and I have followed with
> >> interest.
> >> >Several people have said that a rpm drop is normal when the clutch is
> >> >depressed. Maybe so but I have some doubts.
> >> >
> >> >I noticed this same symtom with my 67 BGT - it typically drops about
> 200
> >> >rpm with the clutch depressed. No major deal because I run my idle at
> >> 1000
> >> >rpm where it is smooth. So a drop to 800 is only a curiosity.
> >> >
> >> >However, my 71 BGT has not shown this problem that I recall. I have
> owned
> >> >and driven it for 16 years now. So when I bought the 67 last March, I
> >> >thought the rpm drop signified something. Maybe not?
> >> >
> >> >And I don't know about roller throw out bearings. I replaced the throw
> >> out
> >> >bearing on the 71 with a standard bearing about two years ago. The 67
> is
> >> >using whatever was put in it in the late 80's - the car had been idled
> >> >since '92 and an oil change sticker indicated it was driven about 2000
> >> >miles between 1987-1992. I've put on about 700 miles on the 67 BGT
> since
> >> I
> >> >got it and it is running quite well to this point - except for the rpm
> >> drop
> >> >and a slight metallic ping which indicates that I should replace the
> >> >u-joints, probably this weekend.
> >> >
> >> >So any other thoughts on the normalcy of the rpm drop? For now, I'll
> just
> >> >figure it is normal.
> >> >
> >> >
> >> >David
> >> >
> >> >
> >> >
> >> >>
> >> >>
> >> >>I thing what we are talking about here is that there wasn't a switch
> to
> >> >>lower idle (at least to my knowledge) and a worn throw out bearing
> may
> >> be
> >> >>causing this problem. Am I following this correctly?
> >> >>
> >> >>
> >> >>Tab, seems to me that somewhere along the line I heard that
> >> >>you should expect about 200 rpm drop with the clutch in.
> >> >>
> >> >>
> >> >>Larry Hoy
> >> >
> >> >
> >
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