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

[metlar at juno.com]

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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