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924 NA turbo conversion
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Raceboy  



Joined: 01 Mar 2004
Posts: 2292
Location: Estonia, Europe

PostPosted: Wed Feb 24, 2016 3:14 am    Post subject: Reply with quote

Euro 924's have 9.3:1 CR and can tolerate 1bar boost easily with 16-17 degrees of advance on pump gas (98 here, 93 in US). Car produced ~250hp.

Pieter (Dutchpug) had almost 400 hp in his 924 stock bottom end with E85.
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friggin  



Joined: 30 Jul 2015
Posts: 39
Location: Montana

PostPosted: Wed Feb 24, 2016 5:08 am    Post subject: Reply with quote

[quote="morghen"]At 6 psi the car will be quite more fast than what it is now. Depending on fuel, your intercooler efficiency and ofcourse your fine tuning maybe you can run more boost.
One day i'll take a NA, strap a turbo on it and see what boost it can take before it lets go.[/quote]

That is probably what I will do when I get the AAN and am ready to swap it. Slowly turn the boost up until it lets go just for fun.
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friggin  



Joined: 30 Jul 2015
Posts: 39
Location: Montana

PostPosted: Sun Jul 03, 2016 12:39 pm    Post subject: Reply with quote

Has anyone ever used a 2000 VW Passat turbo for a donor turbo? Can get my hands on a full turbo car for $400.
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11356
Location: PacNW

PostPosted: Sun Jul 03, 2016 1:27 pm    Post subject: Reply with quote

friggin wrote:
Slowly turn the boost up until it lets go just for fun.


I've spun out in my own coolant. . .wasn't that fun.
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Euro924S2  



Joined: 06 Mar 2008
Posts: 165
Location: UK

PostPosted: Thu Sep 08, 2016 9:48 pm    Post subject: Reply with quote

As said early on, I agree the problems with the clutch handling the power are an issue before the engine can't take the boost.

I ran 232lbft of torque with my previous supercharged 931 engine on a new stock NA clutch and it was slipping in 5th on the motorway on acceleration.

Changing to a 944 drive chain and it handles that torque fine now. (With 911 clutch pressure plate).
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UK spec '83 N/A with 931 motor with Eaton MP62 'charger @ 15psi. EFI - 565cc inj. Standalone Adaptronic ECU. 951 FMIC. Ally rad. Twin throttle. Recirc valve. Custom manifolds and CAI. 232bhp
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