[Supras] Cam gear timing difficulties

[cthommes at adelphia.net]

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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