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Search took 0.12 seconds. Search: Posts Made By: Speedy Squirrel
Forum: 911 / 930 Turbo & Super Charging Forum 12-21-2025, 02:41 PM
Replies: 13
Views: 489
Posted By Speedy Squirrel
The 911 model was planned to end by 1980,...

The 911 model was planned to end by 1980, including the Turbo. However, the take rate for the 928 and 924 was not as high as expected. Porsche had its first money loosing year in 1980, and Peter...
Forum: 911 / 930 Turbo & Super Charging Forum 10-10-2025, 05:53 PM
Replies: 12
Views: 527
Posted By Speedy Squirrel
You can and you will overspeed the turbo. You...

You can and you will overspeed the turbo. You won’t see any particular effect though. The shaft and bearing system is designed to remain relatively stable to at least 150% of design speed. Event that...
Forum: 911 / 930 Turbo & Super Charging Forum 08-30-2025, 09:06 AM
Replies: 14
Views: 664
Posted By Speedy Squirrel
The ‘76 and ‘77 turbo used a pump with a 43mm...

The ‘76 and ‘77 turbo used a pump with a 43mm wide pressure gear. It is not considered the “turbo” pump. The turbo pump has a cast iron housing (appears black compared to the aluminum color of other...
Forum: 911 / 930 Turbo & Super Charging Forum 08-27-2025, 06:45 AM
Replies: 14
Views: 664
Posted By Speedy Squirrel
Turbo oil pump or regular oil pump?

Turbo oil pump or regular oil pump?
Forum: 911 Engine Rebuilding Forum 08-27-2025, 06:40 AM
Replies: 4
Views: 369
Posted By Speedy Squirrel
Have you considered ultrasonic cleaning as an...

Have you considered ultrasonic cleaning as an alternative? Many places can perform that service as well.
Forum: 911 Engine Rebuilding Forum 08-05-2025, 08:17 PM
Replies: 14
Views: 898
Posted By Speedy Squirrel
Lycoming specifies allowable sealants. They are...

Lycoming specifies allowable sealants. They are not allowed to experiment in the aviation industry.

We can be more freewheeling. At this point I don’t think anybody would us an RTV sealant on a...
Forum: 911 Engine Rebuilding Forum 08-02-2025, 07:53 AM
Replies: 16
Views: 742
Posted By Speedy Squirrel
I’m including this animation of rod motion to...

I’m including this animation of rod motion to help make my points:

https://youtube.com/shorts/vL_FwC51sDI?si=ApNrSpcPgGKRNrW8

The pink dot is kind of hypothetical. It is at the center of the...
Forum: 911 / 930 Turbo & Super Charging Forum 07-28-2025, 05:37 PM
Replies: 13
Views: 466
Posted By Speedy Squirrel
The tach signal loss usually points to the CDI...

The tach signal loss usually points to the CDI box or one of its inputs or outputs in my experience. You could try checking the green wire from the distributor. That is pretty easy to do.
Forum: 911 / 930 Turbo & Super Charging Forum 06-01-2025, 12:17 AM
Replies: 2
Views: 196
Posted By Speedy Squirrel
The washer is out there in repair kits. For the...

The washer is out there in repair kits. For the washer, any kit intended for the 12mm diameter distributor shaft will work. The pin is also available.

Clamp the gear in a soft jawed vise....
Forum: 911 / 930 Turbo & Super Charging Forum 05-17-2025, 06:59 PM
Replies: 5
Views: 376
Posted By Speedy Squirrel
Those injectors have two spray cones, one for...

Those injectors have two spray cones, one for each intake valve on a four valve engine. For a two valve engine they wind up spraying a lot of fuel at the port walls. A single spray cones would be...
Forum: 911 Engine Rebuilding Forum 05-10-2025, 08:20 PM
Replies: 2
Views: 420
Posted By Speedy Squirrel
So, that one is a low impedance injector...

So, that one is a low impedance injector (resistance around 2.4 ohms). If your ecu injector drivers can be switched between low and high you can use the newer high impedance injectors, like Siemens...
Forum: 911 Engine Rebuilding Forum 05-03-2025, 06:45 PM
Replies: 13
Views: 872
Posted By Speedy Squirrel
I wanted to throw a couple of things out there....

I wanted to throw a couple of things out there. One is this high speed combustion video, which I posted awhile back. The dark boundaries are shock fronts, where the flame front has become sonic....
Forum: 911 Engine Rebuilding Forum 05-03-2025, 06:15 PM
Replies: 12
Views: 1,252
Posted By Speedy Squirrel
I found this info on Nimonic 80a, which is what...

I found this info on Nimonic 80a, which is what the aircooled turbo engines used. They were also sodium filled on the exhaust side, and later on both sides.
...
Forum: 911 / 930 Turbo & Super Charging Forum 05-03-2025, 12:23 PM
Replies: 9
Views: 448
Posted By Speedy Squirrel
Good news! He had a brilliant design for an...

Good news! He had a brilliant design for an airbox. Very sensible approaches to all of his mods.
Forum: 911 / 930 Turbo & Super Charging Forum 05-02-2025, 08:36 AM
Replies: 31
Views: 6,953
Posted By Speedy Squirrel
Yes, correct. All air going through the airflow...

Yes, correct. All air going through the airflow flapper must go into the engine. When the throttle is closed the boost pressure is relieved to the compressor inlet. This helps keep the turbo spooled...
Forum: 911 / 930 Turbo & Super Charging Forum 04-19-2025, 05:56 PM
Replies: 13
Views: 445
Posted By Speedy Squirrel
To answer your question. Yes, the turbo oil has...

To answer your question. Yes, the turbo oil has to be removed to take off the belt intact. The only snag can be the pump fitting, which can be a little tight sometimes.
Forum: 911 / 930 Turbo & Super Charging Forum 04-06-2025, 08:39 PM
Replies: 6
Views: 383
Posted By Speedy Squirrel
I see what you are referring to. I found this...

I see what you are referring to. I found this 1976 934, VIN 0060022. It does not seem to have a tail mounted cooler. Interesting.

http://forums.pelicanparts.com/uploads26/IMG_47101743997068.jpg...
Forum: 911 / 930 Turbo & Super Charging Forum 04-05-2025, 10:16 AM
Replies: 22
Views: 1,073
Posted By Speedy Squirrel
965 was a Porsche project that was never...

965 was a Porsche project that was never produced. It is the production 964 turbo intercooler.
Forum: 911 / 930 Turbo & Super Charging Forum 04-03-2025, 07:12 PM
Replies: 76
Views: 25,204
Posted By Speedy Squirrel
That one is a 964 3.3L turbo. It has either been...

That one is a 964 3.3L turbo. It has either been repaired, or lost its original nameplate at some point

Porsche 911 Turbo (964)
Baujahr: ab Dez 1990 Motor: 930
Hubraum: 3300 ccm
Leistung: 235...
Forum: 911 / 930 Turbo & Super Charging Forum 04-03-2025, 12:37 PM
Replies: 6
Views: 383
Posted By Speedy Squirrel
Here is the Group 4 934 engine compartment. Are...

Here is the Group 4 934 engine compartment. Are you referring to the air/water intercooler water tank?

http://forums.pelicanparts.com/uploads26/IMG_47011743708982.jpg
Forum: 911 / 930 Turbo & Super Charging Forum 04-02-2025, 11:09 PM
Replies: 9
Views: 380
Posted By Speedy Squirrel
Running the rails in parallel has a slight...

Running the rails in parallel has a slight advantage in keeping all injectors at the same pressure, but either way can work fine.

I have run my setup for over 15 years, and 10 of those were as a...
Forum: 911 / 930 Turbo & Super Charging Forum 04-02-2025, 07:59 PM
Replies: 16
Views: 556
Posted By Speedy Squirrel
Here are the results of my tests on the 1986 to...

Here are the results of my tests on the 1986 to 1989 930 distributor, P/N 0 237 302 045 with PGFU6 ignition control capsule.

For vacuum applied to the front and not the back advance occurs
For...
Forum: 911 / 930 Turbo & Super Charging Forum 04-02-2025, 07:43 PM
Replies: 16
Views: 556
Posted By Speedy Squirrel
Here is the description of the vacuum connections...

Here is the description of the vacuum connections on the '86 to '89 930 throttle body. One of the big differences is that the cold start idle is now controlled entirely by the idle air bypass valve....
Forum: 911 / 930 Turbo & Super Charging Forum 04-01-2025, 06:37 PM
Replies: 16
Views: 556
Posted By Speedy Squirrel
"The diagram I have shows terminal #7 on the...

"The diagram I have shows terminal #7 on the enrichment control unit, for a 1986 model (mine's 1987), vs #12 on your diagram. Different years?"

Yes, you are correct. There are two different Fuel...
Forum: 911 / 930 Turbo & Super Charging Forum 03-27-2025, 03:06 PM
Replies: 16
Views: 556
Posted By Speedy Squirrel
They solenoids are supposed to be connected to...

They solenoids are supposed to be connected to each other as shown below. They share the same ground and control input.

http://forums.pelicanparts.com/uploads26/image1_1_1743113062.jpg...
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