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924/931/944/951/968 Forum Porsche 924, 924S, 931, 944, 944S, 944S2, 951, and 968 discussion, how-to guides, and technical help. (1976-1995)
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Supercharger!

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Old 06-05-2005, 09:22 PM
  #16  
Campeck
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Originally Posted by tomrc
There's one 3 letter word that makes me not want a turbo---LAG-- not the thing to have when autoX'ing though like everything else I guess you can get used to it. I'd still rather have a supercharger.

I autoX therefore I do not turbo.
hehe. Unless you have a high compression turbo motor
Old 06-05-2005, 10:05 PM
  #17  
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Originally Posted by Serge944
For the money, I'll drop an ls1 or lt1 in and have peace of mind...along with a crap load of hp.
LS1 swap for $5,500? Sounds like a good deal, when can you start on my car?
Old 06-05-2005, 10:12 PM
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Serge944
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If you're good, you can find a good engine for 1000-1500. Basic renegade kit is 2100. You spend the remaining 2k on improving cooling and other misc stuff.

It goes without saying, you have to do all the work yourself..
Old 06-05-2005, 10:13 PM
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Originally Posted by Campeck
hehe. Unless you have a high compression turbo motor
Haven't you broken enough cars? Really.
Old 06-05-2005, 10:46 PM
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Originally Posted by Serge944
If you're good, you can find a good engine for 1000-1500. Basic renegade kit is 2100. You spend the remaining 2k on improving cooling and other misc stuff.

It goes without saying, you have to do all the work yourself..
Dude I have talked to several people that have done these conversions. It usually ends up costing 3-4 times what they originally planned to spend, by the time they get everything right. . . .
Old 06-06-2005, 12:16 AM
  #21  
MichelleJD
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Even putting a Porsche engine back in costs more $ than you bargain for. I can't imagine the various and sundry things that go into a V8 conversion. I doubt it could be done for less than $5K.

Having said that, I understand why people don't like the sell-and-buy-a-turbo mentality. It was a hard decision to let go of my N/A, it meant a lot to me. However, the first time the boost rolled on in my turbo, I knew the N/A's days were numbered. I would have loved to have kept her (owned her for 8 years) and thrown a supercharger in. No one would have suspected the capabilities of the car. So I'd say go for it if you got the cash. Tim at SFR knows what he's doing so it's likely a good kit. Just make sure you upgrade the other components as well: brakes, suspension, etc. You don't want to end up killing yourself.
Old 06-06-2005, 01:06 AM
  #22  
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If your looking for Hp or just decent Hp then youd would have to do alot more then just slapping on a supercharger kit. Especially if you want to eventially crank up boost and run it safely. I guess for autocross no lag would be good. Wouldn't you experience some Hp loss being that its belt driven and the application is on a 2.5L 4 banger?? If you do like yer car and dont want to sell it wouldn't that mean your also satified with the power. Or else that would mean you dont like it.
Old 06-06-2005, 01:12 AM
  #23  
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Hasn't that always been the trade off b/t spuerchargers and turbos? Superchargers rob hp by running off the engine. Turbos use the hp-free exhaust gases, but have lag. I guess if you autocrossed only, the supercharger would be ideal. However, since mine is a daily driver, the turbo benefits far outweigh the supercharger. It's always a balancing test.
Old 06-06-2005, 01:18 AM
  #24  
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Originally Posted by MichelleJD
I guess if you autocrossed only, the supercharger would be ideal. However, since mine is a daily driver, the turbo benefits far outweigh the supercharger. It's always a balancing test.
My thoughts as well I dont think i'd supercharger for daily use.
Old 06-06-2005, 01:18 AM
  #25  
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You can run a small and large turbo in sequence to compensate for turbo lag (time and money prohibiting).
Old 06-06-2005, 01:33 AM
  #26  
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Superchargers are really nice for a daily driver because along with not having as much lag they create torque at lower rpms. makes it nice when you don't have to downshift to accelerate in traffic.
Old 06-06-2005, 07:15 AM
  #27  
J Chen
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Superchargers are nice but for our cars installing
a centrifugal charger is not that much better than
a turbo with K27/6 conversion. In fact to even make
the 951 engine better, you can increase the compression
by a point.
Old 06-06-2005, 09:54 AM
  #28  
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Originally Posted by J Chen
Superchargers are nice but for our cars installing
a centrifugal charger is not that much better than
a turbo with K27/6 conversion. In fact to even make
the 951 engine better, you can increase the compression
by a point.
This is correct. The Ideal for more torque at lower rpms would be a roots/screw type which build boost off idle.



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