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Navin Johnson
 
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Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,787
Cam Timing

Since cam timing is a topic that seems to throw doubts into engine rebuilds..

We recently took a Supercup engine, and twin turboed it

Only 4 cams to time

Initial set up



Fixture and dial indicators in place


Yeap degree wheel


fine adjustments


Cam timing


FYI

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Old 03-18-2007, 07:23 PM
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Navin Johnson
 
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Wonder why that one pic would not post... so here it goes again...

fixture with dial indicators in place


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Old 03-18-2007, 07:26 PM
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Navin Johnson
 
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ok I guess somewhere there is something funky in the filename... so I renamed it

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Old 03-18-2007, 07:29 PM
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Nifty tools Tim. You guys make them?
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Old 03-19-2007, 05:09 AM
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Thanks for a view of how the other 1% lives! That's some engine.

The latest Excellence notes that the 8 cylinder type 771 engine (used in the 907) took the factory 220 hours to assemble.

How long for one of these?

Walt Fricke
Old 03-19-2007, 01:20 PM
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I read that too, Walt, about the 771. The same paragraph said it took 16 hours to assemble a 906 engine, which is basically a 901. . . then again that's assembly only, not teardown, rework and reassembly.

Back to Tim's topic, what makes this engine's cam timing different than any other four-cam 996 motor? Not to downplay the significance in the slightest, on the contrary, those four-valve water-cooled engines are pretty complicated. Is that Richie in the photo?

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Old 03-19-2007, 01:29 PM
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