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Cam timing for supercharged application

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Old Dec 29, 2003 | 02:01 PM
  #1  
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From: HMB
Default Cam timing for supercharged application

I have a 2001 prelude and I just finished rebuilding my engine. I will be running 14 psi with a jackson racing SC and I have a full head job but am still running the stock cams. I will be tuning with a AEM EMS but to change the cam timing you have to take apart half of the charger. So I was wondering if any of you guys have had any experience with what timing works best. Any information would be a big help.
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Old Dec 29, 2003 | 04:09 PM
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get on a dyno
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Old Dec 30, 2003 | 07:36 AM
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for best performance u will want to dial out excess duration (overlap) with cam gears

~boom
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Old Jan 5, 2004 | 02:54 PM
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Does anybody have actual experience with this setup and what degrees to advance and retard the timing? If anyone can help it would save me a lot of rime and money on the dyno.
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Old Jan 5, 2004 | 04:24 PM
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uh
unfortunately there is no such thing as a magic nunber when it comes to tuning any kind of motor, whether its all motor or boosted, the smart thing to do is dynotuning not heresay or guesswork.
spend the couple hundred on the dyno so you dont regret it

~boom
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Old Jan 5, 2004 | 09:38 PM
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Try asking the people at Jackson since you are using their parts. I'm sure they would have a good ballpark figure for you
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Old Jan 6, 2004 | 09:23 PM
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how are you running 14psi with a JRSC????

the stock pully is only rated at 6psi....and ive only heard of pullies raising the boost to 9psi with JRSC
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Old Jan 6, 2004 | 11:29 PM
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Default Re: Cam timing for supercharged application

Originally posted by Nargo2
I have a 2001 prelude and I just finished rebuilding my engine. I will be running 14 psi with a jackson racing SC and I have a full head job but am still running the stock cams. I will be tuning with a AEM EMS but to change the cam timing you have to take apart half of the charger. So I was wondering if any of you guys have had any experience with what timing works best. Any information would be a big help.
how are you gonna tune with your EMS without a dyno or a wideband o2? with a "14 psi" JRSC setup you're gonna need to fine tune A/F and timing like a mofo...

save some money and get it done right. otherwise your 10,000 bucks worth of "cool stuff" is gonna detonate in the middle of hailstorm 30 miles away from civilization or something sad like that.

i'm not trying to bust your balls, but what i don't get is when people spend TONS of money on stuff and don't want to pony up a couple hundy to get the thing tuned right. it's like getting $3000 in bodywork and putting it on your car and not getting it painted...then again i don't understand people that would spend $3000 on bodywork aside from a paintjob...
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Old Jan 7, 2004 | 11:00 PM
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I have a custom pulley and had a shop in texas open up the supercharger rebuild it and bore it out a little. Should end up right around 14psi if not 15psi. I will be taking it to AEM to get it tuned with their wideband O2 sensor. I am definetely not trying to avoid forking over the money to get my car tuned right, I just wanted to have a good starting point.
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Old Jan 8, 2004 | 09:15 AM
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oh ok, that's a good idea.

thing is i would want timing to be as conservative as possible unless you're gonna trailer the car to AEM...i'd hate to blow a cylinder on the way...
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