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October 5th, 2006, 11:19 AM
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#1 |
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Regular
Join Date: Sep 2006
Posts: 185
 iTrader: 0 reviews
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Supercharger Is Loosing Boost!
I bought a 1998 mustang GT with a vortech supecharger. I was getting 6lbs of boost, at 3000 rpm, and 10 lbs at 5000 rpm. But now I'm getting 0-1 lbs, and 4-5 lbs! could the supercharger be going out in it? someone help me please!!
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1998 Mustang GT Super Charged! CGS Sub frames, Auto Meter gauges, Bassani Exhaust! |
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October 5th, 2006, 11:36 AM
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#2 |
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MM Fanatic
2002 Mustang GT
11.47@120.58
Join Date: Aug 2005
Location: Valdosta, GA
Posts: 3,940
iTrader: 0 reviews
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You probably have a slipping belt, look for black dust around the pulleys. A new belt should fix it, Gatorback is preferred, the cheap stuff slips.
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October 5th, 2006, 01:22 PM
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#3 |
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Banned
00 V6 & 09 GT
13.37@104.4mph--BONE stock GT
Join Date: Aug 2006
Location: south florida
Posts: 15,859
iTrader: 2 reviews
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do most s/c get fulll boost that late in the RPM band?
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[SIGPIC][/SIGPIC] Acmillr loves me |
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October 5th, 2006, 02:02 PM
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#4 |
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MM Fanatic
2002 Mustang GT
11.47@120.58
Join Date: Aug 2005
Location: Valdosta, GA
Posts: 3,940
iTrader: 0 reviews
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Centrifugals do.
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October 5th, 2006, 04:19 PM
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#5 |
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Regular
Join Date: Sep 2006
Posts: 185
iTrader: 0 reviews
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yeah, my supercharger used to get 10 lbs of boost at 5000 rpm, but for some reason its only getting 4-5 lbs now? Should I send it off to be rebuilt?
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1998 Mustang GT Super Charged! CGS Sub frames, Auto Meter gauges, Bassani Exhaust! |
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October 5th, 2006, 04:38 PM
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#6 |
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MM Fanatic
2002 Mustang GT
11.47@120.58
Join Date: Aug 2005
Location: Valdosta, GA
Posts: 3,940
iTrader: 0 reviews
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No dude, replace the belt first.
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October 5th, 2006, 04:55 PM
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#7 |
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MM Ninjas!
 
1990 Mustang LX
9.36@143 mph
Join Date: Jan 2006
Location: North Fond du Lac, Wisconsin
Posts: 11,375
 iTrader: 1 reviews
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belt slip
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My daily driver has 16 cylinders and 4400hp @ 1000 rpm....  ***1988 Mustang GT - Stock....almost 
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October 5th, 2006, 06:59 PM
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#8 |
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Regular
Join Date: Sep 2006
Posts: 185
iTrader: 0 reviews
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sweet! thanks guys! i really appreciate it! How freakin hard is to change a belt on a supercharger? Does anyone have a personal preference on a brand? how much are the belts?
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1998 Mustang GT Super Charged! CGS Sub frames, Auto Meter gauges, Bassani Exhaust! |
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October 5th, 2006, 08:01 PM
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#9 | |
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Banned
Join Date: Jul 2006
Location: アメリカ
Posts: 5,954
iTrader: 0 reviews
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its ok tho  welcome to MM, i assume u jus joined? 
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[SIGPIC][/SIGPIC] [SIZE="5"][FONT="Arial Black"]OBEY THE FACE![/FONT][/SIZE] Edited By Moderator. Next time will be a ban. |
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October 5th, 2006, 08:25 PM
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#10 |
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Regular
Join Date: Sep 2006
Posts: 185
iTrader: 0 reviews
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Thanks My`StangOpens, but there is still 1 question still that still remains, how hard would it be to change one? Is there any diagrams? Also, the supercharger makes a noise, sorta like a grinding noise, now I know that superchargers make like a whistling noise, but this is somewhat of a grinding noise, that is why i thought the bearings or something was going out.
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1998 Mustang GT Super Charged! CGS Sub frames, Auto Meter gauges, Bassani Exhaust! |
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October 6th, 2006, 06:34 PM
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#11 |
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Enthusiast
Join Date: Jan 2006
Posts: 968
iTrader: 0 reviews
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The belt their referring to is simply your serpentine belt for the all the motors components. Also suggest you get a gatorback cause the cheaper belts dont cut it for superchargers. Check for dust near the s/c pulley indicating serpentine belt slippage. On the bad side it sounds like your bearings may be going out. I have a vortech v2 centrifugal s/c and when the bearings went out it started making a grinding noise also, although i dont recall it losing boost. i just recall it sounding very unhappy and it got progressively worse.
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 New block with forged internals running 16psi, tuned by Lasota Racing Too many mods to list... 3.73's and Truetrac Finally Done! 
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October 7th, 2006, 08:11 AM
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#13 |
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Hardcore Enthusiast
Join Date: Sep 2006
Location: tennessee
Posts: 2,364
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might want to check the bypass to see if it it bleeding boost too.
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October 14th, 2006, 06:47 PM
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#14 |
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Newbie
Join Date: Oct 2006
Location: Augusta,Ga
Posts: 6
iTrader: 0 reviews
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maybe exhaust
did you change your exhaust system to larger pipes after the supercharger upgrade????????
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