rebuilt supercharger

I have a '93 Bonneville with the supercharged 3.8 liter engine. When the supercharger started making suspicious noises, my GM service center told me the only option was to buy a new one from them for over
$2400 + labor to put it in. In doing some checking, I determined that there is an alternative that is much more reasonable. Magnuson Products in Ventura, CA (tel 805-642-8833) sells rebuilt superchargers for $1,100 plus a $200 core fee (refundable if yours is usable) plus $50 shipping (covers both to you and return of your old unit to them).
I lucked out even better. They had a "cosmetically imperfect" unit for $550 plus core fee and shipping. According to the tech I spoke with at Magnuson, these units are mechanically perfect and he'd use one in his car, so that's what I bought. The "blemish" was that the covers were from different cars and were therefore different colors.
Put it in four days ago and it's working perfectly. I realize that's a short time, so if there's any change, be sure that I'll post it here.
Magnuson also sells "nose cone kits" if only the bearing is bad.
What's really annoying about my GM service center not knowing about this is GM put out a Service Bulletin in 1999 pointing out that Magnuson was a source of more economical units when the customer had to pay for it (as opposed to warranty, where they have to put in a new unit). If anyone wants it, Magnuson can fax you a copy. It's labelled Bulletin #99-06-01-012 dated July 19, 1999. Magnuson is a factory authorized rebuilder (the only one according to their literature) of Eaton superchargers -- which is what GM put in their cars.
I also found Magnuson's people to be really helpful. Highly recommended!
Hoping this helps others in a similar situation.
Martin
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
That's good to know.
Lee
'00 SSEi

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Magnuson is the only Aftermarket supplier & Retailer of Eaton Supercharges. Charles
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
What would happen if you con't to use your old supercharged? I have a supercharged on my 93 Bonneville SSEi as well. I have over 190,000 mile (306,000Km) on this engine and it is still running fine. I have been monitored the oil level and have top it up once complete supercharged oil from GM (very small bottle) within a year period. I am wondering how long will this supercharged is going to last and what would be the sign of failure when it starts to fail?

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

AFAIK, the two main modes of failure of a supercharger are the bearings going boink and the supercharger ingesting something it should not. For the first, well, you can notice it when turning the charger by hand: if it is noiser you know it is time to consider replacing bearings. The second one usually leads to lower compression/boost.

--
Mauricio raub-kudria-com
(if you need to email me, use this address =)
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Martin,
Are you the original owner on the car?
Did you ever change ( siphon ) the supercharger oil ? say once a year?
How many miles does the car have?
Just trying to gage how long these things last.
========Harryface ======== 1991 Pontiac Bonneville LE 3800 V6 ( C ), Black/Slate Grey _~_~_~282,900 miles_~_~_
~_~_~_~_U.S.A._~_~_~_~_~_
~~~The Former Fleet ~~~ 89 Cavalier Z 24 convertible 78 Holiday 88 coupe 68 LeSabre convertible 73 Impala sedan
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.