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Search: Posts Made By: JakobM
Forum: 911 Engine Rebuilding Forum 11-11-2019, 03:22 PM
Replies: 23
Views: 1,107
Posted By JakobM
Absolutely need a cooler:) This is a nice...

Absolutely need a cooler:)
This is a nice cooler indeed! but link is overpriced IMO
Also, despite the advert text, the pressure drop would be bigger on the dual pass version vs. a single pass...
Forum: 911 / 930 Turbo & Super Charging Forum 07-21-2019, 12:41 PM
Replies: 29
Views: 1,715
Posted By JakobM
Ok, great package! GT35 is a smaller turbo around...

Ok, great package! GT35 is a smaller turbo around 62mm exducer. I mixed you up with a BW 366 turbo.
Twin scroll is KING and will hold a lower overall average back-pressure, but it also builds higher...
Forum: 911 / 930 Turbo & Super Charging Forum 07-21-2019, 08:20 AM
Replies: 29
Views: 1,715
Posted By JakobM
Exactly, perfect! Ok now understood -...

Exactly, perfect!



Ok now understood - Perfect! Yes the all boost should go the top of the WG port as early as poosible. Good!

You will have the issue fixed with the new springs and 4 port...
Forum: 911 / 930 Turbo & Super Charging Forum 07-21-2019, 07:29 AM
Replies: 29
Views: 1,715
Posted By JakobM
As I remember you are running a Borg Warner EFR...

As I remember you are running a Borg Warner EFR turbo in true twin scroll mode right? they use big turbine exducers compared to other brands, and you are running also T4 1.06 housing, so very...
Forum: 911 / 930 Turbo & Super Charging Forum 07-21-2019, 07:20 AM
Replies: 29
Views: 1,715
Posted By JakobM
Engine specs like cylinder, heads, cams etc. is...

Engine specs like cylinder, heads, cams etc. is not a factor in this concern. What matters is spring load, WG size, solenoid type and connection, ECU setup and backpressure. If you dont have an issue...
Forum: 911 / 930 Turbo & Super Charging Forum 07-21-2019, 05:06 AM
Replies: 4
Views: 1,223
Posted By JakobM
Pat Williams Racing build a twin turbo 3.4L 700hp...

Pat Williams Racing build a twin turbo 3.4L 700hp @ wheels with "only" ported twin plug heads and STOCK valve size 49mm as far as I know. 1 bar of boost. Nice car, and some 10 years ago. Properly...
Forum: 911 / 930 Turbo & Super Charging Forum 07-21-2019, 04:43 AM
Replies: 29
Views: 1,715
Posted By JakobM
Yes, cover plate = bolt-up flange with no hole to...

Yes, cover plate = bolt-up flange with no hole to completely disable the WG

Leak test: Normally on 4 cylinders all inlet valves are closed when engine is parked, so pressure is applied all the way...
Forum: 911 / 930 Turbo & Super Charging Forum 07-20-2019, 06:59 PM
Replies: 29
Views: 1,715
Posted By JakobM
Added note - Running a test with the WG cover...

Added note - Running a test with the WG cover plate also tells you the absolute earliest possible spool-up you are to aim for when you install and test WG spring(s) load and your boost solenoid. You...
Forum: 911 / 930 Turbo & Super Charging Forum 07-20-2019, 06:27 PM
Replies: 29
Views: 1,715
Posted By JakobM
Ok, so what I read is you cannot get more boost...

Ok, so what I read is you cannot get more boost than spring rate, right? What is your spring rate btw? And you let the WG open at 130kpa, I assume this is 1.3 bar and not 0.3 bar, correct?

Such...
Forum: 911 / 930 Turbo & Super Charging Forum 07-20-2019, 02:59 PM
Replies: 40
Views: 3,586
Posted By JakobM
+1 Thanks! You hit the nail! That is why we...

+1
Thanks! You hit the nail! That is why we love them
Forum: 911 / 930 Turbo & Super Charging Forum 07-20-2019, 02:27 PM
Replies: 29
Views: 1,715
Posted By JakobM
Thanks, and yes exactly! Good you added this! :) ...

Thanks, and yes exactly! Good you added this! :)
The need for higher load force on top of membrane increases greatly when the diameter of WG valve increases even a little due to the much larger...
Forum: 911 / 930 Turbo & Super Charging Forum 07-20-2019, 01:56 PM
Replies: 29
Views: 1,715
Posted By JakobM
I have experience with several EFI units but...

I have experience with several EFI units but never used Megasquirt, so no expert in MS, but beleive it should handle a 4 port valve just fine. The port valve is two wire only, same as a 3 port valve....
Forum: 911 / 930 Turbo & Super Charging Forum 07-19-2019, 05:55 PM
Replies: 29
Views: 1,715
Posted By JakobM
Ohh and one last advantage of 4 port solenoid….;)...

Ohh and one last advantage of 4 port solenoid….;)

Almost ALL WG leaks air from our vacuum/pressure hose internally in the WG below the membrane and out through the valve guide clearance - this is...
Forum: 911 / 930 Turbo & Super Charging Forum 07-19-2019, 05:31 PM
Replies: 29
Views: 1,715
Posted By JakobM
My advise - go with a 4 port MAC valve and you...

My advise - go with a 4 port MAC valve and you get a better solution - you get to add your boost pressure as your "amo" to fight against your back-pressure. A 3 port valve can not do this. A 4 port...
Forum: 911 / 930 Turbo & Super Charging Forum 07-12-2019, 05:08 PM
Replies: 10
Views: 1,455
Posted By JakobM
my guess is this is one of our bellowed WTB reply...

my guess is this is one of our bellowed WTB reply scammers who seemed slightly to understand zero post user profiles do not work well for scamming - and not being able to formulate anything...
Forum: Porsche 911 Used Parts For Sale & Wanted 07-11-2019, 11:19 AM
Replies: 5
Views: 678
Posted By JakobM
Bump

Bump
Forum: Porsche 911 Used Parts For Sale & Wanted 07-04-2019, 06:24 AM
Replies: 5
Views: 678
Posted By JakobM
Bump Sent from my iPhone using Tapatalk

Bump


Sent from my iPhone using Tapatalk
Forum: Porsche 911 Used Parts For Sale & Wanted 06-24-2019, 03:53 PM
Replies: 5
Views: 678
Posted By JakobM
still available

still available
Forum: Porsche 911 Used Parts For Sale & Wanted 06-20-2019, 12:31 PM
Replies: 5
Views: 678
Posted By JakobM
PM replied Sent from my iPhone using...

PM replied


Sent from my iPhone using Tapatalk
Forum: Porsche 911 Used Parts For Sale & Wanted 06-20-2019, 01:10 AM
Replies: 5
Views: 678
Posted By JakobM
FS: Sports seats 81-84 - Brown

Sport seats 1981-1984
Driver side has some wear on left side - see pictures
1600$ plus shipping. Location is Denmark. I will make a safe wooden box, appr. 100 x 70 x 70cm, properly 50kg all...
Forum: 911 / 930 Turbo & Super Charging Forum 06-12-2019, 02:57 PM
Replies: 3,909
Views: 337,950
Posted By JakobM
930 49mm inlet valve setup out of 930 race engine...

930 49mm inlet valve setup out of 930 race engine
https://uploads.tapatalk-cdn.com/20190612/95aced6a3b4d16e6ea677ed389f5ee8c.jpg

my test fabricated 51mm titanium inlet valves with small diameter...
Forum: Porsche 911 Used Parts For Sale & Wanted 06-10-2019, 03:08 PM
Replies: 4
Views: 239
Posted By JakobM
I have a set as well, light brown

I have a set as well, light brown
Forum: 911 / 930 Turbo & Super Charging Forum 02-14-2019, 07:20 AM
Replies: 11
Views: 559
Posted By JakobM
We are not that far from each other, I am located...

We are not that far from each other, I am located just north of you in Dänemark :-)
I have been tig-welding custom turbo headers for many years. Twin scroll only, and all kind of cars. Happy to...
Forum: 911 / 930 Turbo & Super Charging Forum 02-13-2019, 08:30 AM
Replies: 11
Views: 559
Posted By JakobM
I would not go 2.25' secondaries when building...

I would not go 2.25' secondaries when building equal length. Back pressure is fine already. Secondary becomes an extension of primaries on equal length design, and primaries now have two dimensions....
Forum: 911 / 930 Turbo & Super Charging Forum 02-13-2019, 05:06 AM
Replies: 11
Views: 559
Posted By JakobM
Great project! Looking at the header...

Great project!

Looking at the header pictured the guy who build this seems to have misunderstood how Twin scroll works just as many other manufactures. Or I see it wrong on the picture. I see on...
Showing results 1 to 25 of 274

 
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