SN-89

nasty92LX · July 26th, 2007, 11:02 PM

Hi i just bought a SN-89 from my buddy. I do not know much about them but how much bost can you get out of them without over spinning it and are they any good.

Iownastang · July 26th, 2007, 11:41 PM

What is an sn-89 supercharger

neverfastenough1 · July 27th, 2007, 12:21 AM

Originally Posted by jordan

What is an sn-89 supercharger

Yes, its the old Paxton. I don't know how much boost it puts out with the different size pulley's, but I think it starts at like 5 lbs. A couple guys have them in their pics so maybe someone can give you an answer.

Iownastang · July 27th, 2007, 12:27 AM

Thats what i thought it was but was not positive,put her on there and see how she does.Is it rebuilt if not i would check into it

nolife · July 27th, 2007, 09:01 AM

With Vortech, you can call them with the serial number and they will provide you with the history and info. Paxton may do the same.

neverfastenough1 · July 27th, 2007, 09:19 AM

Call these guys, apparently they bought all the rights to those sn series superchargers. From what I gathered they are 4-5 psi, and you have to change the crank pulley size to up the boost. Or you can upgrade the internals to a sn2000 and get like 8-9psi. These are the guys to ask about it..

http://www.paradisewheelsinc.com/

stang87 · April 27th, 2009, 07:30 PM

Is their supose to be any tension on the pulley when u turn it or is it supose to be free?

1slo5.0 · April 27th, 2009, 07:34 PM

Originally Posted by nasty92LX

Hi i just bought a SN-89 from my buddy. I do not know much about them but how much bost can you get out of them without over spinning it and are they any good.

The stock pulley is about 5psi. They are very inefficient. I hope you didn't pay more than a few hundred bucks for it. I wouldn't recommend them. I had one years ago. I bored the hole larger on an aluminum underdrive alternator pulley and cut another key way and used it. Made about 15psi with it but the blower is so inefficient it is more of a heat pump than a blower. Gets worse when you over spin them like I did. Paxton doesn't even tech support them anymore. Like neverfastenough said, they sold the rights to Paradise Wheel Company.

1slo5.0 · April 27th, 2009, 07:35 PM

Originally Posted by stang87

Is their supose to be any tension on the pulley when u turn it or is it supose to be free?

Ther is tension.

JBIGBOOTSY · April 27th, 2009, 08:29 PM

Originally Posted by Darrell

Ther is tension.

Backrub?

flyin ryan · April 28th, 2009, 11:04 AM

Originally Posted by Darrell

the blower is so inefficient it is more of a heat pump than a blower

I completely agree.. not worth much money or the effort to get any power out of them honestly.

91Project · April 28th, 2009, 11:13 AM

A SN89 was my first supercharger. Like everyone else said, they arent that good really ( but if you got it for a steal then you cant beat cheap boost ). I never could get my case to stop leaking... It burnt up more alternators than I can count ( thank god NAPA kept honoring the warranty ).

1slo5.0 · April 28th, 2009, 11:50 AM

Originally Posted by 91Project

A SN89 was my first supercharger. Like everyone else said, they arent that good really ( but if you got it for a steal then you cant beat cheap boost ). I never could get my case to stop leaking... It burnt up more alternators than I can count ( thank god NAPA kept honoring the warranty ).

No kidding, you can grill burgers on those things after a short cruise.

stang87 · April 30th, 2009, 04:44 PM

how much tension is their gonna be on the pulley when u turn it? I have one it is really hard to turn, I thought it might need to be rebulit?

July 26th, 2007, 11:02 PM	#1
nasty92LX Regular Join Date: Mar 2007 Posts: 184 iTrader: 0 reviews	SN-89 Hi i just bought a SN-89 from my buddy. I do not know much about them but how much bost can you get out of them without over spinning it and are they any good.

July 26th, 2007, 11:41 PM	#2
Iownastang I Post Entirely Way Too Much 1987 ford mustang gt well see when shes done Join Date: May 2007 Location: mascot, tn Posts: 5,020 iTrader: 0 reviews	What is an sn-89 supercharger __________________ 2004 tahoe z71 Daily 2004 BBM Gto ls1 6 speed 57,000 miles 1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600

July 27th, 2007, 12:27 AM	#4
Iownastang I Post Entirely Way Too Much 1987 ford mustang gt well see when shes done Join Date: May 2007 Location: mascot, tn Posts: 5,020 iTrader: 0 reviews	Thats what i thought it was but was not positive,put her on there and see how she does.Is it rebuilt if not i would check into it __________________ 2004 tahoe z71 Daily 2004 BBM Gto ls1 6 speed 57,000 miles 1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600

July 27th, 2007, 09:01 AM	#5
nolife MM Fanatic 91GT, 88GT, 02GT Join Date: Dec 2006 Posts: 3,057 Blog Entries: 3 iTrader: 0 reviews	With Vortech, you can call them with the serial number and they will provide you with the history and info. Paxton may do the same. __________________

July 27th, 2007, 09:19 AM	#6
neverfastenough1 Hardcore Enthusiast 2002 Mustang GT Join Date: May 2007 Location: Savannah, Ga Posts: 2,789 iTrader: 3 reviews	Call these guys, apparently they bought all the rights to those sn series superchargers. From what I gathered they are 4-5 psi, and you have to change the crank pulley size to up the boost. Or you can upgrade the internals to a sn2000 and get like 8-9psi. These are the guys to ask about it.. http://www.paradisewheelsinc.com/ __________________

April 27th, 2009, 07:30 PM	#7
stang87 Newbie Join Date: Apr 2009 Posts: 8 iTrader: 0 reviews	Is their supose to be any tension on the pulley when u turn it or is it supose to be free? Last edited by stang87; April 27th, 2009 at 07:32 PM.

April 28th, 2009, 11:13 AM	#12
91Project Regular 1991 Mustang GT Join Date: Mar 2009 Posts: 144 iTrader: 0 reviews	A SN89 was my first supercharger. Like everyone else said, they arent that good really ( but if you got it for a steal then you cant beat cheap boost ). I never could get my case to stop leaking... It burnt up more alternators than I can count ( thank god NAPA kept honoring the warranty ). __________________ AutoMeter C2 Nitrous Guage FS PM for details

April 30th, 2009, 04:44 PM	#14
stang87 Newbie Join Date: Apr 2009 Posts: 8 iTrader: 0 reviews	how much tension is their gonna be on the pulley when u turn it? I have one it is really hard to turn, I thought it might need to be rebulit?

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