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Search took 0.07 seconds. Search: Posts Made By: buster73
Forum: Porsche 911 Technical Forum 12-12-2025, 02:00 AM
Replies: 18
Views: 623
Posted By buster73
A while ago I tested the electronic balancer (not...

A while ago I tested the electronic balancer (not digital though) from my BMW motorcycle engine. If you just connect it to the vacuum ports of both banks, you get some average values which are...
Forum: Porsche 911 Technical Forum 12-12-2025, 01:58 AM
Replies: 4
Views: 825
Posted By buster73
A while ago I tested the electronic balancer (not...

A while ago I tested the electronic balancer (not digital though) from my BMW motorcycle engine. If you just connect it to the vacuum ports of both banks, you get some average values which are...
Forum: Porsche 911 Technical Forum 12-05-2025, 06:45 AM
Replies: 30
Views: 5,057
Posted By buster73
Not just Porsche ! I can not remember to have...

Not just Porsche ! I can not remember to have seen any rubber snap-in valve that is officially rated for more then 210 km/h (130 mph). In general you will need metal valves in Germany for any speed...
Forum: Porsche 911 Technical Forum 12-02-2025, 03:04 AM
Replies: 30
Views: 5,057
Posted By buster73
In Germany there is a Porsche specification that...

In Germany there is a Porsche specification that requires valve stem supports 911.361.561.01 for 7“ (offset 23.3 mm) and 8“ (offset 10.6 mm) wheels in combination with rubber valves. Also the rubber...
Forum: 911 Engine Rebuilding Forum 11-23-2025, 01:53 PM
Replies: 13
Views: 609
Posted By buster73
Looks like normal wear but very surprising after...

Looks like normal wear but very surprising after only so few miles. Also strange to see such a huge difference between the cylinders. Probably just the wrong heat rating for your modified engine. NGK...
Forum: Porsche 911 Technical Forum 11-23-2025, 01:25 PM
Replies: 2
Views: 134
Posted By buster73
Length is ca. 300 mm. I selected a 6,5 Liter...

Length is ca. 300 mm. I selected a 6,5 Liter Ultrasonic cleaner which is just big enough to hold Weber or Zenith housings.

http://forums.pelicanparts.com/uploads26/Zenith1s1763933033.jpg...
Forum: Porsche 911 Technical Forum 11-23-2025, 09:28 AM
Replies: 4
Views: 362
Posted By buster73
Guess this sticker came off the cruise control...

Guess this sticker came off the cruise control actuator unit (91161712301).


http://forums.pelicanparts.com/uploads26/91161712301s1763918900.jpg
Forum: Porsche 911 Technical Forum 11-17-2025, 09:30 AM
Replies: 39
Views: 1,608
Posted By buster73
Just took my car (3.0 with twin Webers) to the...

Just took my car (3.0 with twin Webers) to the Alps up to almost 3,000 m (9,000 ft). Thanks to a dual O2 sensor setup, I was able to keep an eye on AFR-values. Idle AFR dropped from ca. 12.5 at sea...
Forum: Porsche 911 Technical Forum 11-17-2025, 09:00 AM
Replies: 11
Views: 396
Posted By buster73
Thumbs up If your CIS components are the original early...

If your CIS components are the original early pieces you might think about keeping them, in case you ever want to sell the car. These early CIS components are quite rare and an important part of the...
Forum: Porsche 911 Technical Forum 11-13-2025, 05:33 AM
Replies: 11
Views: 396
Posted By buster73
The Zenith will work well with your 73.5 engine....

The Zenith will work well with your 73.5 engine. I tested Zeniths in comparison to Webers on my 73.5 ex. CIS a while ago and found both work well with the standard spec engine (see:...
Forum: Porsche 911 Technical Forum 08-26-2025, 05:09 AM
Replies: 29
Views: 1,966
Posted By buster73
Hi James, For a street car I would go with...

Hi James,

For a street car I would go with 20W-50 and safe the money for an extra tank of gas. What is you engine code 930/04 or 930/06 ? . Hopefully we will have plenty of time to discuss your...
Forum: 911 Engine Rebuilding Forum 08-21-2025, 02:43 AM
Replies: 8
Views: 707
Posted By buster73
Thanks for your advice. Confirms my doubts that...

Thanks for your advice. Confirms my doubts that this crank is no option for my project. The owner was racing RSRs in historic racing for many years and has this crank in storage since. At the moment...
Forum: 911 Engine Rebuilding Forum 08-20-2025, 09:33 AM
Replies: 8
Views: 707
Posted By buster73
66mm 935 crank for magnesium case ?

Still going through the options for my 2,4 project based on a 73 2.4 7R case. Now I was offered a brand new 66mm 935 crankshaft complete with titanium rods and bearings. Did some research and seems...
Forum: Porsche 911 Technical Forum 07-12-2025, 05:28 AM
Replies: 12
Views: 515
Posted By buster73
Loving my Michelin Pilot Exalto. Great tire...

Loving my Michelin Pilot Exalto. Great tire especially in the wet or in changing conditions.

http://forums.pelicanparts.com/uploads26/P1040248s1752323237.JPG
Forum: Porsche 911 Technical Forum 06-22-2025, 03:43 AM
Replies: 2
Views: 187
Posted By buster73
Tanslates to: "rubber bumper guards for front and...

Tanslates to: "rubber bumper guards for front and rear bumper". This refers to the rubber blocks mounted to the chrome bumper guards.
Forum: Porsche 911 Technical Forum 05-14-2025, 01:57 AM
Replies: 5
Views: 330
Posted By buster73
I started using an AFR meter after installing a...

I started using an AFR meter after installing a 3.0 engine running on Weber carbs. Really helps to dial in the jetting and doing all the fine tuning. Welded in two M18 bungs into both sides of my...
Forum: 911 Engine Rebuilding Forum 05-10-2025, 01:35 AM
Replies: 5
Views: 456
Posted By buster73
Probably a good idea to flush fuel tank and fuel...

Probably a good idea to flush fuel tank and fuel lines and clean or replace the fuel filter elements in the fuel tank and inside the carbs. I would also clean all carburetor jets or better give the...
Forum: Porsche 911 Technical Forum 05-09-2025, 02:07 AM
Replies: 5
Views: 332
Posted By buster73
Attached a profile shot. Hope this helps. ...

Attached a profile shot. Hope this helps.

http://forums.pelicanparts.com/uploads26/IMG_20231025_102140st1746781597.jpg
Forum: Porsche 911 Technical Forum 05-08-2025, 04:10 AM
Replies: 5
Views: 332
Posted By buster73
Was running 195/60/15 on the front mounted on 7"...

Was running 195/60/15 on the front mounted on 7" Fuchs. No issues with the 7" wheel. Tires were Hankook Optimo K415. No high performance tire but quite acceptable for the street and one of the few...
Forum: Porsche 911 Technical Forum 04-09-2025, 09:32 AM
Replies: 6
Views: 303
Posted By buster73
Was running my 73T with below setup for many...

Was running my 73T with below setup for many years without any issues, This setup came with the Weber conversion kit offered by PMO for the 73T model back in the 70s:

Weber 40 IDA 3C
Main jet:...
Forum: Porsche 911 Technical Forum 04-07-2025, 09:45 AM
Replies: 7
Views: 315
Posted By buster73
When you disconnect the rear drop links the...

When you disconnect the rear drop links the throttle shaft with all 3 throttle plates should move free and without any bind. If you feel resistance you might have to look into the shafts/bushings or...
Forum: Porsche 911 Technical Forum 04-06-2025, 06:32 AM
Replies: 5
Views: 466
Posted By buster73
On my SC case (1980, 930/09) there were threads...

On my SC case (1980, 930/09) there were threads in place to fit the early style SSI`s. Probably changed over the years. The additional mounting points sure help to stabilize the whole system but you...
Forum: 911 Engine Rebuilding Forum 03-30-2025, 02:28 AM
Replies: 29
Views: 1,588
Posted By buster73
Became alarmed to this topic when helping a...

Became alarmed to this topic when helping a friend to tear apart an engine that developed a through-bolt leak immediately after a full rebuild. We found one of the standard blue O-rings squeezed to...
Forum: 911 Engine Rebuilding Forum 03-28-2025, 10:15 AM
Replies: 29
Views: 1,588
Posted By buster73
[QUOTE=Henry Schmidt;12436660]I'm confused. You...

[QUOTE=Henry Schmidt;12436660]I'm confused.
You guys are holding the head end of the stud with a wrench...right?
If you're holding the head with a wrench, the stud won't spin and obviously neither...
Forum: 911 Engine Rebuilding Forum 03-28-2025, 06:07 AM
Replies: 29
Views: 1,588
Posted By buster73
Following Henrys advice I also had good results...

Following Henrys advice I also had good results with using Viton-rings, Dow 55 and chamfering the case. In order to avoid spinning the washers (together with the O-rings) I used a clamp and a piece...
Showing results 1 to 25 of 500
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