[Supras] ***SPAM*** Re: 89 Supra Oil Pump Drive Pulley exploded

[Hacker J]

I have heard of this happening to others on the forums.  Not common, but not unheard of either. If
the belt cover is off it is possible a rock could get wedged between the belt and the pulley, but
otherwise who knows.

Jon

--- supras-request at supras.com wrote:
> 
> Looks like it was the Oil pump drive pulley that exploded! Yikes, the pulley was in about 8
> pieces, have a new OEM and new OEM Timing Belt on the way. There were metal shardes everywhere.
> Any idea on how this happened and how I can prevent this from happening again? Should I be
> replacing the oil pump as well? 
> 
> Who else has this happened to? 
> 
> Tom 
> 89 Supra (sharded itself) 
> 
> -- <cthommes at adelphia.net> wrote:
> Yeah, they should be able to tell by looking.  The tensioner should be fixed in a tensioned
> position.  I suspect it may have been left bolted down fully retracted (in the belt R&R
> position), or not bolted down at all.
> 
> The shop manual gives good instructions on timing the cams and tensioning the belt properly. 
> Locktite wouldn't be needed or advised.
> 
> The motor could run for quite a while before the lack of proper tension causes the belt to
> jump...
> 
> -Craig
> 
> 
> ---- "metlar at juno.com" <metlar at juno.com> wrote: 
> > As far as I know it was, I had all this work done on it last June I believe, so I did drive it
> for some of the fall without issues. I did no driving in the winter. 
> > 
> > Will they be able to tell that by looking at the tensioner? Should i have them bolt it w/
> locktite as well? 
> > 
> > Thanks C!
> > 
> > Tom
> > 
> > 
> > -- <cthommes at adelphia.net> wrote:
> > Was the tensioner properly tensioned and bolted in place?
> > 
> > -Craig
> > 
> > ---- "metlar at juno.com" <metlar at juno.com> wrote: 
> > > Hi Jeff, Jim, Bernie, list, 
> > > 
> > > I appreciated your discussion on the Cam journals very much, it certainly helps out. 
> > > 
> > > Looks like the timing belt jumped and when they opened it up saw the belt just flopping
> around in there. 
> > > 
> > > Any idea why this belt skipped? What should I have them check out when they spend some more
> time on it tomorrow as I don't want it to happen again. 
> > > 
> > > Thanks list,
> > > 
> > > Tom
> > > 89 Supra (no timing belt)
> > > 
> > > -- "Jeff Mohler" <speedtoys.racing at gmail.com> wrote:
> > > Yes.
> > > 
> > > Every single one of our heads has "worn out" journals.
> > > 
> > > The specs are only to be believed on NEW heads.  The bearings are not
> > > replaceable, and baaaarely serviceable.   Why Toyota lists specs at
> > > all, I do not know.
> > > 
> > > 
> > > The journals are either brand new and 'in spec', or "worn out", or
> > > "absolutely destroyed".
> > > 
> > > 
> > > Very few are absolutely destroyed, 99.9% of us are worn out, none of
> > > us are new.   :)
> > > 
> > > 
> > > using the list gives you 20yrs of know-how...can save lots of $.
> > > 
> > > 
> > > 
> > > 
> > > On Tue, May 6, 2008 at 8:56 AM, metlar at juno.com <metlar at juno.com> wrote:
> > > > So I should have just ignore that the journals were were out?
> > > >
> > > > After resurfacing them, I did hear less noise and had more oil pressure.
> > > >
> > > > Still waiting to see/hear if indeed the timing belt did go, hopefully should hear
> something today on it.
> > > >
> > > >
> > > > -- "Jeff Mohler" <speedtoys.racing at gmail.com> wrote:
> > > > ALL toyota cam journals are worn out and sloppy.
> > > >
> > > >
> > > > I really wish people would ask why only -1- person. (ok, there might
> > > > be a handful more) has ever done this before jumping into something
> > > > like that.
> > > >
> > > >
> > > > It may not be related, but other than lightening your bank account, it
> > > > did nothing FOR you.
> > > >
> > > > On Mon, May 5, 2008 at 9:44 AM, metlar at juno.com <metlar at juno.com> wrote:
> > > >>
> > > >> I was hearing noise in the engine/had lower oil pressure, so I had my mech go in to do my
> Valve shims(which I thought were the problem) and per Bernie's advice (THANK YOU BERNIE!!),
> tested the Cam journals as well and yep, the Cam Journals were worn out and sloppy.
> > > >>
> _____________________________________________________________
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> 
> 
> 
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