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Registered
Join Date: Mar 2008
Posts: 2
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85 Carrera Twilight Zone Timing Problem
Completed total engine rebuild a couple of weeks ago stuffed it in the car fired it up.
 Noticed only 1,2,3 cylinders firing  (ran pretty smooth). After checking everything from fuel injection to all DME I/O voltages and pulses (I'm an electronics tech since the 70's) and everything looked correct I decided to pull the dist. and see if it was 180 out, after switching it 180 and reinstalling and re-firing the engine I found cylinders 4,5,6 firing. Also, the side that is not firing the heat exchanger stays cool. Is it possible to have a cam 180 out and not put the valves through the pistons? I've rebuilt a lot of V8's and Volkswagen engines and never encountered anything like this. Any help, suggestions or free money would be greatly appreciated.Steve B 85 Carrera Targa 06 GTI 83 Scirocco |
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03-26-2008, 05:04 PM
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Join Date: Jun 2004
Location: Rio Rancho, New Mexico
Posts: 1,325
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Steve B,
Classic symptoms of a cam timed 180 out. You will find 1 and 4 are under compression at the same time rather than opposite. Do an engine drop and retime right or left side cam, your choice. You can access this with a partial drop if you wish to avoid a complete drop. It is close and a bit tougher access.
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DOUG '76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's. '85 911 Carrera, stock, just painted, Orient Red |
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03-26-2008, 05:26 PM
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Join Date: Mar 2008
Posts: 2
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Doug, Thanks for the reply. I was pretty sure this was the problem, guess I know what I'm doing this weekend.
Steve B |
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03-27-2008, 03:40 AM
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