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Porsche 924 supercharger
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chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Mon Dec 05, 2016 2:58 am    Post subject: Porsche 924 supercharger Reply with quote

Anyone tried to install supercharger with belt on 924 na instead of turbo conversion?
It's possibile to install it in place of air conditioned and work is a lot easy and cheaper of turbo , but performances?
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Porsche 924 2.0 na 125hp (1979) euro
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Carrera RSR  



Joined: 08 Jan 2010
Posts: 1582
Location: Somerset, UK

PostPosted: Mon Dec 05, 2016 3:42 am    Post subject: Reply with quote

Best 924 supercahrger install on the planet -

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1980 931 - forged pistons, Piper cam, CGT turbo, 951 ducted FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife LSD
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Rasta Monsta  



Joined: 12 Jul 2006
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Location: PacNW

PostPosted: Mon Dec 05, 2016 5:38 am    Post subject: Reply with quote

Wow, that's pretty clean alright. Who did it?
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Carrera RSR  



Joined: 08 Jan 2010
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Location: Somerset, UK

PostPosted: Mon Dec 05, 2016 5:53 am    Post subject: Reply with quote

Rasta Monsta wrote:
Wow, that's pretty clean alright. Who did it?


Porschenewbe on here. We know him as Dr John
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1980 931 - forged pistons, Piper cam, CGT turbo, 951 ducted FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife LSD
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chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Mon Dec 05, 2016 5:58 am    Post subject: Reply with quote

This engine is conversion of 924 engine to engine of years 90
But for reply to my answer, a simply supercharger on 924 can improve performances?
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Porsche 924 2.0 na 125hp (1979) euro
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Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro
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morghen  



Joined: 21 Jan 2005
Posts: 7874
Location: Romania

PostPosted: Mon Dec 05, 2016 6:22 am    Post subject: Reply with quote

chris79 wrote:
This engine is conversion of 924 engine to engine of years 90
But for reply to my answer, a simply supercharger on 924 can improve performances?


He runs newer technology than 90s.

But to answer your question, yes...a simple compressor can be added...you just have to start doing something
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Carrera RSR  



Joined: 08 Jan 2010
Posts: 1582
Location: Somerset, UK

PostPosted: Tue Dec 06, 2016 7:51 am    Post subject: Reply with quote

morghen wrote:
chris79 wrote:
This engine is conversion of 924 engine to engine of years 90
But for reply to my answer, a simply supercharger on 924 can improve performances?


He runs newer technology than 90s.

But to answer your question, yes...a simple compressor can be added...you just have to start doing something


Supercharger came from an Aston Martin or similar from memory.
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1980 931 - forged pistons, Piper cam, CGT turbo, 951 ducted FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife LSD
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chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Tue Dec 06, 2016 5:58 pm    Post subject: Reply with quote

But installation of supercharger can improve performances even for maximun speed? I read that supercharger on some applications turn off when engine run hight.
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morghen  



Joined: 21 Jan 2005
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Location: Romania

PostPosted: Tue Dec 06, 2016 8:34 pm    Post subject: Reply with quote

Late 90s and early 00s Mercedes have superchargers with a magnetic clutch that can be slipped on and off if you want them or not.
That requires a whole control system tho.
So if I were to make a simple supercharged 924 I would make an on/off switch on a Mercedes sourced supercharger and use a 931 WUR.
I would only boost 0.3 bar and i'd use no intercooler.
Bet that would be a fun car to drive
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chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Wed Dec 07, 2016 4:00 am    Post subject: Reply with quote

I there are no problems I could install supercharger always actived, but I read that on high rotation supercharger can reduce performances, really?
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morghen  



Joined: 21 Jan 2005
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PostPosted: Wed Dec 07, 2016 7:32 am    Post subject: Reply with quote

If the supercharger is too small...but thats not the case with such a small slow breathing engine like the 924 2L.
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snakoil  



Joined: 09 Feb 2010
Posts: 341
Location: Canada

PostPosted: Wed Dec 07, 2016 11:36 pm    Post subject: Reply with quote

I think the mechanical fuel injection system (CIS) on our cars would be a problem for this as it is part of the air intake system.

Probably an EFI conversion first would simplify the task and ensure better results as you would gain experience from tuning and fuel system on the car.

I know I posted this here before but you can get self oiled MR2 AW11 superchargers for dirt cheap saving you the trouble of drilling oil feed in your oil pan. If you don't care about AC, the SC unit from the MR2 is not much bigger/heavier. All you would need is a custom braket to hold it in the old AC location and oyu would use the AC belt ribs on the crank pulley.

[img]https://www.google.ca/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjgy7DnjOLQAhWB24MKHZXaDi8QjRwIBw&url=http%3A%2F%2Fwww.toyotanation.com%2Fforum%2F102-1st-2nd-generation-1983-1986-1987-1991%2F96341-will-sc12-supercharger-jdm-4agze-fit-91-camry.html&bvm=bv.140496471,d.amc&psig=AFQjCNHkL8ZNWrk8OjKPkuu5TkVq9if0LA&ust=1481200655215687[/img]
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Paul  



Joined: 02 Nov 2002
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Location: Southeast Wisconsin

PostPosted: Thu Dec 08, 2016 3:13 am    Post subject: Reply with quote

Check this:

http://www.924board.org/viewtopic.php?t=41050&highlight=supercharger
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Paul  



Joined: 02 Nov 2002
Posts: 9344
Location: Southeast Wisconsin

PostPosted: Thu Dec 08, 2016 3:26 am    Post subject: Reply with quote

Another:

http://www.924board.org/viewtopic.php?t=14973&highlight=supercharger
_________________
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
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chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan

PostPosted: Thu Dec 08, 2016 4:58 am    Post subject: Reply with quote

If I would like try with cis, supercharger must aspirate air from cis plate and push into intake manifold? And I have to reduce advance for avoid detonation ?
Then I think installation is simply, but I have to make oil into supercharger? And for limit air pressure without elettrics systems?
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Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro
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