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Author
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Topic: Vortech SC Won't Boost
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SC363SN
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Member # 13850
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posted
 
 
So I bought a vortech v2 sc and noticed no difference, what can be the issue here? Bad supercharger? Any way to identify a sc that needs a rebuild?
Posts: 489 | From: Sacramento | Registered: Nov 2014
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Fostang
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Member # 3752
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posted
Do you have a boost gauge? What's ur motor combo and cid. Also what pulley combo are you running?
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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SmokinLX
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Member # 1684
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posted
Bad blow off Valve? Is there oil leaking out of supercharger?
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Dont claim power if ya cant mile per hour. 10 second AOD
Posts: 4388 | From: East Bay | Registered: Aug 2002
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SC363SN
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Member # 13850
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posted
It's a chp 306ci, ported e7 heads, typhoon upper and lower, stock cam with a complete vortech v2 with a anderson power pipe. I can't hear the blowoff valve go off after punching it, could that be the issue?
[ 2016-03-17, 09:13 PM: Message edited by: BuiltSaleen ]
Posts: 489 | From: Sacramento | Registered: Nov 2014
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Martinna
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Member # 12493
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posted
A leak between the blower outlet and BOV would cause this. Maybe a small tear in a coupler, or a coupler that has slightly slipped off the edge?
Posts: 1093 | From: City | Registered: Oct 2012
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Fostang
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Member # 3752
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posted
Pulley combo? And do you have a gauge?
You will not hear the Bosch bov that comes standard on the vortech.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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Fostang
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Member # 3752
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posted
Also what injectors or maf? Is it tuned or are you running an fmu? What's the timing set at? 91 octane?
Now are you sure this is the newer sc trim and not the old school a trim?
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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SC363SN
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Member # 13850
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posted
quote:
Originally posted by Fostang:
Also what injectors or maf? Is it tuned or are you running an fmu? What's the timing set at? 91 octane?
Now are you sure this is the newer sc trim and not the old school a trim?
24s with maf. Yes running the vortech fmu, vortech timing box and kb boost a spark. Tuned by gtr high performance. Forgot to mention it has been sitting for 1 year. Not sure on pulley combo but, it's a big pulley. Should I upgrade to smaller one?
[ 2016-03-18, 08:49 AM: Message edited by: BuiltSaleen ]
Posts: 489 | From: Sacramento | Registered: Nov 2014
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SC363SN
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Member # 13850
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posted
quote:
Originally posted by BuiltSaleen:
quote:
Originally posted by Fostang:
Also what injectors or maf? Is it tuned or are you running an fmu? What's the timing set at? 91 octane?
Now are you sure this is the newer sc trim and not the old school a trim?
24s with maf. Yes running the vortech fmu, vortech timing box and kb boost a spark. Tuned by gtr high performane. Forgot to mention it has been sitting for 1 year. Not sure on pulley combo but, it's a big pulley. Should I upgrade to smaller one? Doesn't have gauge hooked up either so it's harder to diagnose
Posts: 489 | From: Sacramento | Registered: Nov 2014
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Fostang
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Member # 3752
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posted
Get yourself a gauge. If it sat that long make sure you get some good plugs. Colder than stock and gap them about .035
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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92_5.0
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Member # 7624
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posted
quote:
Originally posted by BuiltSaleen:
quote:
Originally posted by Fostang:
Also what injectors or maf? Is it tuned or are you running an fmu? What's the timing set at? 91 octane?
Now are you sure this is the newer sc trim and not the old school a trim?
24s with maf. Yes running the vortech fmu, vortech timing box and kb boost a spark. Tuned by gtr high performance. Forgot to mention it has been sitting for 1 year. Not sure on pulley combo but, it's a big pulley. Should I upgrade to smaller one?
You are probably running the 3.33 pulley, do not change the pulley or you will have to re-tune the car. If you change the plugs, pick up some Autolite copper (3942's I believe) don't get platinum or anything fancy.
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Infineon/Sears point? same difference!
11.8 @ 115 mph @ Sac Raceway
411 rwhp 402 trq (old set up)
540 rwhp 517 rwtrq (new set up)
ET's to come
Posts: 1629 | From: bay area | Registered: May 2007
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Fostang
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Member # 3752
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posted
He's using e7 heads. I would do an auto lite 23 or 24. Stocks are 25
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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Fostang
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Member # 3752
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posted
Btw unless the impeller has been destroyed even a bad centrifugal will make boost.
The only thing to really go bad aside from catastrophic failure are some high speed bearings and seals.
Make sure the belt is torqued appropriately and has the proper tension.
[ 2016-03-18, 11:11 AM: Message edited by: Fostang ]
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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SC363SN
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Member # 13850
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posted
Turned out to be bad spark plugs and the floor matt was preventing it to go in to wot. Thanks Cafords! pulls like a beast now ![[patriot]](graemlins/patriot.gif)
Posts: 489 | From: Sacramento | Registered: Nov 2014
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92_5.0
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Member # 7624
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posted
quote:
Originally posted by BuiltSaleen:
Turned out to be bad spark plugs and the floor matt was preventing it to go in to wot. Thanks Cafords! pulls like a beast now
Gotta love an easy fix
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Infineon/Sears point? same difference!
11.8 @ 115 mph @ Sac Raceway
411 rwhp 402 trq (old set up)
540 rwhp 517 rwtrq (new set up)
ET's to come
Posts: 1629 | From: bay area | Registered: May 2007
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