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Showing results 1 to 25 of 71
Search took 0.02 seconds. Search: Posts Made By: dr bob
Forum: Porsche 928 Technical Forum 08-13-2015, 10:05 PM
Replies: 16
Views: 1,366
Posted By dr bob
Wiring for the sensor runs through the door tube,...

Wiring for the sensor runs through the door tube, then through the mirror base up into the mirror forward (towards the front of the car) of the glass. The glass comes out by rotating the locking...
Forum: Porsche 928 Technical Forum 08-13-2015, 09:58 PM
Replies: 2
Views: 1,549
Posted By dr bob
Somewhere in the WSM is the instruction for...

Somewhere in the WSM is the instruction for setting initial mileage on a new digital ODO. You have to do it pretty soon after you install it. I'm not handy to the manuals so can't quote the exact...
Forum: Porsche 928 Technical Forum 08-13-2015, 05:34 PM
Replies: 10
Views: 1,229
Posted By dr bob
Andy, pull the two hoses. Top hose at the...

Andy, pull the two hoses. Top hose at the radiator, and rotate it up on the engine nozzle. Lower hose from the thermostat housing. Best to pull the whole thermostat housing really, so the water...
Forum: Off Topic Discussions 08-13-2015, 04:24 PM
Replies: 52
Views: 3,194
Posted By dr bob
The aluminum parts of the car are the hood, front...

The aluminum parts of the car are the hood, front fenders and the doors. The rest of the car is steel. It has great rustproofing too, lesson learned from the earlier air-cooled cars.

As far as...
Forum: Porsche 928 Technical Forum 06-03-2010, 12:18 PM
Replies: 8
Views: 1,468
Posted By dr bob
Easiest after supporting the engine and removing...

Easiest after supporting the engine and removing the crossmember. Plan on motor mounts at the same time.

Plan on doing a lot of pre-cleaning. Detergent or engine cleaner, lots of water or a...
Forum: Porsche 928 Technical Forum 06-03-2010, 12:12 PM
Replies: 7
Views: 957
Posted By dr bob
The rear bumper blocks are that cool...

The rear bumper blocks are that cool grainy-textured vinyl materail, the kind that seems to be a magnet for mineral deposits and wax. First step would be to remove them (one bolt) and get them...
Forum: Porsche 928 Technical Forum 05-01-2010, 07:37 PM
Replies: 51
Views: 6,149
Posted By dr bob
Double-check that torque on the drive flange...

Double-check that torque on the drive flange bolts. The WSM spec on those Allen bolts is 59 lbs/ft., tech specs manual lists 64 lbs/ft. More than a few folks have been stranded with those bolts...
Forum: Porsche 928 Technical Forum 04-17-2010, 05:15 PM
Replies: 23
Views: 3,970
Posted By dr bob
The spacers are concentric to the rotating stub...

The spacers are concentric to the rotating stub axle, aluminum, and small enough to not be an issue. If you do decide to do the casual spin test of the half-shafts to the tires, you need to support...
Forum: Porsche 928 Technical Forum 04-13-2010, 10:53 PM
Replies: 8
Views: 650
Posted By dr bob
With no O2 sensors and no catalysts, mixture...

With no O2 sensors and no catalysts, mixture needs to be set with a CO gauge at the exhaust. The adjustment is a small potentiometer on a cable in the passenger-side footwell, inside the electrics...
Forum: Porsche 928 Technical Forum 04-09-2010, 03:04 PM
Replies: 40
Views: 14,302
Posted By dr bob
Excellent troubleshooting technique. Obviously...

Excellent troubleshooting technique. Obviously the wiring in the Hornets is too small...


On the car, 15 millianps is a 'normal' drain on my car ('89 S4) and most of that is the clock and the...
Forum: Porsche 928 Technical Forum 04-09-2010, 02:37 PM
Replies: 14
Views: 945
Posted By dr bob
I'll add that on those side-electrode plugs, the...

I'll add that on those side-electrode plugs, the spark 'gap' is the space between the little plat tip in the middle of that insulator. Even though the side electrodes are touching the center...
Forum: Porsche 928 Technical Forum 04-04-2010, 08:41 PM
Replies: 40
Views: 14,302
Posted By dr bob
The reading you are seeing is normal. Change...

The reading you are seeing is normal.

Change the meter to read amps, on the ten amp scale, and connect it where the lamp is in the diagram. The doors must be closed and the hatch must be closed...
Forum: Porsche 928 Technical Forum 03-31-2010, 01:51 PM
Replies: 20
Views: 3,804
Posted By dr bob
Once you get the rest of the electical panel...

Once you get the rest of the electical panel stuff sorted, you'll want to do some vacuum system sleuthing. Start out at the vacuum connection near the brake booster. At the cross fitting there,...
Forum: Porsche 928 Technical Forum 03-27-2010, 05:56 PM
Replies: 25
Views: 4,262
Posted By dr bob
The crank turns at twice the speed of the cams,...

The crank turns at twice the speed of the cams, so rotating the crank another 360º would have made the cam timing appear correct. You were checking at TDC on number one, but it was on the exhaust...
Forum: Porsche 928 Technical Forum 03-27-2010, 05:43 PM
Replies: 28
Views: 2,076
Posted By dr bob
That's "ported vacuum", and increases as velocity...

That's "ported vacuum", and increases as velocity and mass through the throttle area increase. Same as higher load on the engine. If you T your gauge into that line, you should see more vacuum at...
Forum: Porsche 928 Technical Forum 03-27-2010, 12:01 PM
Replies: 28
Views: 2,076
Posted By dr bob
I think all 928's start out with red fuel caps. ...

I think all 928's start out with red fuel caps.

The variations ROW-vs-US-vs-other specialty markets include different coding plugs for the brains, giving more or less advance and fuel, reading oxy...
Forum: Porsche 928 Technical Forum 03-27-2010, 08:10 AM
Replies: 20
Views: 3,804
Posted By dr bob
That fresh air blower relay, or maybe the fuse is...

That fresh air blower relay, or maybe the fuse is your problem. Simple cheap easy, "relay-relay-relay" is the Jim Bailey mantra. Buy a good quality relay, avoiding the cheapo imports if you can;...
Forum: Porsche 928 Technical Forum 03-27-2010, 08:05 AM
Replies: 18
Views: 4,214
Posted By dr bob
There's a latch release for the lower connectors...

There's a latch release for the lower connectors per the WSM. I haven't needed to pull any yet so can't share guidance on location of that latch. The connectors are keyed, but still a good idea to...
Forum: Porsche 928 Technical Forum 03-26-2010, 06:12 PM
Replies: 20
Views: 3,804
Posted By dr bob
Fan doesn't run? AC button doesn't light when...

Fan doesn't run? AC button doesn't light when you push the button?

There's a relay for the HVAC that goes south, and a fuse that protects the HVAC wiring that can fail. The relay is Called...
Forum: Porsche 928 Technical Forum 03-26-2010, 05:47 PM
Replies: 28
Views: 2,076
Posted By dr bob
If it's a US car with catalysts and an oxy...

If it's a US car with catalysts and an oxy sensor, leaded fuel will quickly trash both.
Forum: Porsche 928 Technical Forum 03-26-2010, 05:46 PM
Replies: 18
Views: 4,214
Posted By dr bob
The connectors in the panel insert from the back...

The connectors in the panel insert from the back side, and are retained by little tabls on the connector that pop out. It's possible to use a thin probe to push that little tabe back, allowing the...
Forum: Porsche 928 Technical Forum 03-24-2010, 02:05 PM
Replies: 9
Views: 748
Posted By dr bob
Nice car, and at the current ~~$10k bid it's a...

Nice car, and at the current ~~$10k bid it's a good buy based on what's shown and listed.

Get a local mechanical PPI from Dan Warner at Exotic Motorworks in Phoenix. He knows the 928 extremely...
Forum: Porsche 928 Technical Forum 03-21-2010, 02:32 PM
Replies: 12
Views: 806
Posted By dr bob
Keep an eye peeled for 928 race cars for sale. ...

Keep an eye peeled for 928 race cars for sale. They do show up and are a much better launching point for your project IMHO, for both budget and schedule reasons.

Your dream find will have late...
Forum: Porsche 928 Technical Forum 03-21-2010, 02:27 PM
Replies: 2
Views: 462
Posted By dr bob
There's a similar function on the pcars.com...

There's a similar function on the pcars.com website, the sixspeed site, and many others I'm sure. If you can figure a way to automatically poll all the other local sites and create a guide/calendar...
Forum: Porsche 928 Technical Forum 03-21-2010, 02:23 PM
Replies: 29
Views: 10,454
Posted By dr bob
Just a reminder that the distributor turns at...

Just a reminder that the distributor turns at half the speed of the crankshaft. Moving the distributor body --4-- degrees will change from 23º BTDC to 31º BTDC at the crank.

It's easy to get a...
Showing results 1 to 25 of 71
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