[Supras] Cam gear timing difficulties

cthommes at adelphia.net cthommes at adelphia.net
Thu Feb 28 17:52:05 CST 2008


I don't think so.  But in your case I might not rush out and take a scuba diving class just yet.  ;)

-Craig

---- Koll <kasimonds at qwest.net> wrote: 
> Uhhh...
> 
> http://www.turbo505.com/duuh.jpg
> 
> Is is possible for someone to be too stupid to breathe?
> 
> 
> ----- Original Message ----- 
> From: <cthommes at adelphia.net>
> To: "Koll" <kasimonds at qwest.net>
> Cc: <supras at supras.com>
> Sent: Thursday, February 28, 2008 3:14 PM
> Subject: Re: [Supras] Cam gear timing difficulties
> 
> 
> > First, that photo wasn't taken with the crank at 0TDC was it?  If so, your 
> > cams are way advanced, gear notches should be straight up.
> >
> > The other possibility is that while the cam pin is in the middle hole on 
> > the cam gear, it's not in the middle hole on the camshaft itself.  That 
> > would cause a huge (about 30 cam degrees) error in cam timing one way or 
> > the other.
> >
> > And <ahem> you do have spark plugs installed, right?
> >
> > -Craig
> >
> > ---- Koll <kasimonds at qwest.net> wrote:
> >> Hey all,
> >>
> >> I'm having a hell of a time getting the cam timing straight on my stock 
> >> MX83
> >> Cressida.  (7M-GE).
> >>
> >> I put the crank at zero, then the cam marks to line up with the back 
> >> plate
> >> notches and button it all up and no-go.  The engine just "spins", doesn't
> >> "crank".  No compression.
> >>
> >> I followed the TFSM, but I did nothing wrong.  The only "variable" they
> >> mention is which hole to put the cam alignment pin into but I can't even 
> >> see
> >> how that changes anything.  (I did put it back in the same hole - middle)
> >>
> >> So, I'm searching the crap out of the net trying to figure out where I
> >> screwed up and someone mentions that you have to see the intake cam lobe 
> >> in
> >> the oil filler hole.  So, I check and OK, looks like I'm 180 out.  Re-do 
> >> it
> >> "right" and still the "spin", not the crank normally associated with the
> >> air-pump an engine is.
> >>
> >> Is there any other way this can be messed up?
> >>
> >> 1. I've got the cam pins on the middle pin.  Which matches with what was
> >> there when I disassembled:
> >>   picture:  http://www.turbo505.com/cam-gears-before.jpg
> >>
> >> 2. Put pencil in spark plug hole #1 and it rides high on crank mark zero.
> >>
> >> 3. Cams line up perfectly after two manual turns of crankshaft (back to
> >> zero).
> >>
> >> My last Supra was cake when I was here.  So I've done this two times so 
> >> I'm
> >> assuming that I can eliminate the 180 out issue.  Although I'm getting
> >> pretty good as disassembling the front of the engine, I'm getting real 
> >> sick
> >> of this.
> >>
> >> Can anybody help?  Damn, I feel like such a dumbass.
> >>
> >> Thanks,
> >>
> >>   Koll
> >>
> >>
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> >> http://supras.com/mailman/listinfo/supras_supras.com
> >
> > 
> 
> 
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