Supercharger rebuild

[skrenos@skrenos.com]

Hi. I just registered and an not really new to mazdas. I owned a 1985 Ford Escort that had the Mazda RF diesel engine in it. Great car. Poor maintenance by the previous owner. Lost the lower radiator hose, warped head, and cant find a replacement head. Too bad. Also, had a 93 Ford Probe. Great car. Wish I would have kept it after I replaced the auto tranny, but the next owner's daughter trashed the trans in a short order.

So, that bring me to the next car. My brother's 99 Millenia S. I decided to do a t-belt change for him, along with any other maintenence he needed on the car at that time. Pulled off the front intercooler to change the front spark plugs, and lots of oil int he intercooler. Pulled off the upper intake... lots of oil there too and apool of oil in the supercharger. Supercharger is off and starting to be taken apart...

I'm really tearing into this thing and want to see if there are replacement generic seals/bearings we could use to rebuild them cheap and on our own... but I dont want to destroy this thing as I want to give this car back to my brother and get MY car back.

So, does anyone have a cheap (ie $100 shipped) supercharger they could get rid of for the purposes of this project? It's for a good cause

[millyowner]

There are a couple of used superchargers between 75-125 dollars on eBay now. Not sure where else to get one other than a local or online salvage.

[skrenos@skrenos.com]

There are a couple of used superchargers between 75-125 dollars on eBay now. Not sure where else to get one other than a local or online salvage.[/b]

There's 1 with a buy it now of $175 and 5 days left on it. 1 bid of $75 on it so far, means I wont get it cheap. There's another that's already at 4 bids and around $165. And another one with a starting bid of $99 and almost 7 days left on it. Everything else is the fake superchargers.

[Saint_]

Typically people go with a rebuild one for around $2k. You never know the condition of an ebay one.. But if you are mechanically inclined go for it...

[skrenos@skrenos.com]

Ok, got it mostly apart. Looks like each rotor has 2 ball bearings at the snout end. Underneath those bearings is a sleeve bearing. This sleeve bearing may be the graphite bearing everyone talks about, but it doesnt seem like it's made of graphite. It seems like it's steel so it may be a regular sleeve.

The male rotor has the larger bearing and it's a NTN 1832A. The female rotor is smaller and is NTN 3215a. Those numbers are for the top bearing. I believe the bearings underneath those have the same number minus the A. I'll have to check tommorow.

The bearings seem to be unsealed caged roller bearings. They are oil bathed at the snout end which also lubes the helical gears.The portion underneath the 'sleeve' bearing on the rotors also has a chamber which receives oil. There doesnt seem to be any seal to prevent oil from flowing from the bearings onto the rotors... or perhaps mine are completely washed away? I did notice the lower oiling chamber was full of crud and it took me a whole can of carb cleaner to wash out all the sludge.

My brother noticed smoking one winter when he decided to use that Mobil 10,000 mile oil. I think he ended up putting like 15,000 miles on that oil before we changed it out.

Unfortunately, when I drove out the outer bearing, it popped the inner race, cage, and balls out, but left the outer race in the housing. It's in there. it aint coming out. I'm probably gonna have to cut them. This isnt that big of a deal since I'm going to press new ones in.

My male rotor has one of the corners cracked off at the intake end. It's not bent or anything and it still spins smooth... but looking at that, I might need a replacement piece. So again, i call out for any cheap superchargers that one could sell me for the cause.

Pics tomorrow... or soon.

[Saint_]

Definitely take pictures..

[a_harbulak@hotmail.com]

http://forums.mazdaworld.org/index.php?sho...hl=supercharger
http://www.mazdaworld.net/forums/index.php?showtopic=58

see if those help at all until one of the other guys comes...
and i'll sell you my sc thats being ripped out. real good shape.

[skrenos@skrenos.com]

see if those help at all until one of the other guys comes...
and i'll sell you my sc thats being ripped out. real good shape.[/b]

How much?
You can PM me if you don't want to say in public.

[a_harbulak@hotmail.com]

i was joking, i thought you saw the other forum. look at my avatar. its as bad or worse than the one your taking apart. sorry.

[skrenos@skrenos.com]