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joecitizennn

Joined: 12 Sep 2005 Posts: 2096 Location: no mans land
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Posted: Sat Oct 30, 2010 8:44 am Post subject: Boost bomb virgin. |
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| So my 951 has been peaking out at 1.5 bar for all the time I have owned it, and I just assumed it was normal. The car seemed pretty fast, but so far I have only put 1000 miles on it. Doing some reading I saw that the 951 is supposed to be at 1.75 bar at 3000 rpm, well it wasnt doing that. So I began readng more and poking around the engine, and soon found that I had a slight manifold leak and my timing valve for the was leaking pressure to the wastegate. I fixed all that and feel like I drove the car for the first time. I punched it in 4th gear had an immediate flip of the boost needle to just under 2 bar and a split second later a surge like I had been rear ended by a freight train. When the boost hits, it goes off like a bomb... thanks porsche!! |
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Khal

Joined: 26 Sep 2003 Posts: 4872 Location: Sunny and lovely interior BC, Canada
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Posted: Sat Oct 30, 2010 8:45 am Post subject: |
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Turbo's.  _________________ '80 924 Turbo |
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Paul

Joined: 02 Nov 2002 Posts: 9491 Location: Southeast Wisconsin
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Posted: Sat Oct 30, 2010 10:10 am Post subject: |
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Using the B word will have Homeland Security reading our board. HI GUYS! _________________ White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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morghen

Joined: 21 Jan 2005 Posts: 9102 Location: Romania
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Posted: Sat Oct 30, 2010 4:13 pm Post subject: |
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great ! i drove one of those 951S things at 2bar.....it was fast, 5 seconds 0-60  _________________ Supercharger and EFI kits
https://www.the924.com |
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Joes924Racer

Joined: 03 Nov 2002 Posts: 11964 Location: Oregon, Denver Colorado native!
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Posted: Sun Oct 31, 2010 2:17 pm Post subject: |
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Gotta love it. _________________ 1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo. |
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9xx
Joined: 18 Jun 2006 Posts: 627 Location: Jarvenpaa, Finland
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Posted: Sun Oct 31, 2010 7:54 pm Post subject: Re: Boost bomb virgin. |
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| joecitizennn wrote: | | Doing some reading I saw that the 951 is supposed to be at 1.75 bar at 3000 rpm, well it wasnt doing that. |
Of course it should be around 0.75-0.8 bar. The little unaccurate stock 951 boost gauge reads around 1.75 bar but in real world it means 0.75 bar. If you would have 1.75 bar, you'd also have several hundred hp and soon after that a blown engine.  _________________ Mikko
All gone: 931 '82 Alpine White, original option "220" G31 with LSD + 3 x 944 |
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stevekat

Joined: 19 Jan 2008 Posts: 719 Location: Los Angeles, CA
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Posted: Sun Oct 31, 2010 11:29 pm Post subject: |
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Yes, 1.5 bar or more would be insane on a stock 951. _________________ "Never get out of the boat. Absolutely goddamn right. Unless you are goin' all the way."
Gone to new home: '81 924T, US version, CGT Intercooler, UTCIS-PT, Euro DITC, Greddy Trust MBC, Forged Fuchs Flat Dish 6's, Factory Recaro's. |
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Paul

Joined: 02 Nov 2002 Posts: 9491 Location: Southeast Wisconsin
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Posted: Mon Nov 01, 2010 1:09 am Post subject: |
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It's the German way of thinking. Normal barometric pressure is 1 bar in standard conditions at sea level, so why not represent boost as the total pressure? _________________ White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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Carrera RSR

Joined: 08 Jan 2010 Posts: 2312 Location: Somerset, UK
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Posted: Mon Nov 01, 2010 5:14 am Post subject: |
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| Paul wrote: | | Using the B word will have Homeland Security reading our board. HI GUYS! |
I saw some really interesting electronics and wires on a printer cartridge the other day. I reckon this technology could be used in our ignition system. The results that when on boost the surge you'll get will make the car go like a bomb. Like Yemen, sorry, meant to read .... Yea Man!!  _________________ 1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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