Eaton supercharger questions

Tyres, exhausts, suspension, strut braces, air filters, brake pads/rotors and anything else for 'dawn raiders'.
Post Reply
User avatar
Daz3
Joined: Wed 15 Sep, 2010 19:57
Posts: 534

  Z3 roadster 2.8
Location: Spilsby

Eaton supercharger questions

Post by Daz3 »

Anybody got an idea of how the internals should look like on a used charger? I've just stripped mine down none of the bearings have any play just the rotors and bores are scored slightly but I just presumed this is normal.

Image
Image
Image
Image
Image
User avatar
Southernboy
Joined: Thu 07 Oct, 2010 12:39
Posts: 6436

  Z3 roadster 3.0i
Location: Johannesburg

Re: Eaton supercharger questions

Post by Southernboy »

I wish I could advise you, but don't know much about them. Have you considered sending the pics to Eaton and asking their advice ?
"Normal is overrated"
Image

Z3 Upgrades and Additions
martyb
Joined: Thu 10 Jan, 2013 16:53
Posts: 308

  Z3 roadster 1.9

Re: Eaton supercharger questions

Post by martyb »

Cant help either but is this the Eaton supercharger for the 1.9 modification along with gkd fabricated parts?
Image
User avatar
Southernboy
Joined: Thu 07 Oct, 2010 12:39
Posts: 6436

  Z3 roadster 3.0i
Location: Johannesburg

Re: Eaton supercharger questions

Post by Southernboy »

He's doing a 2.8 supercharged conversion... :D
"Normal is overrated"
Image

Z3 Upgrades and Additions
martyb
Joined: Thu 10 Jan, 2013 16:53
Posts: 308

  Z3 roadster 1.9

Re: Eaton supercharger questions

Post by martyb »

Ahhh very nice! There was 2 supercharger kits reviewed in performance BMW last month for the z3 2.8 model reported at the 400bhp mark.... :D
Image
User avatar
jont
Joined: Tue 18 Oct, 2005 10:54
Posts: 82

  Z3 roadster 1.9
Location: Brisbane

Re: Eaton supercharger questions

Post by jont »

Hi
I have just had my unit rebuilt and from what i can see the yours is in is very good condition
Also a suggestion I would advise is put a oil catcher tank on your pcv valve assy also a inline filter to cat any extra oil vapours my unit was a bloody mess when I stripped it down with all of the oil inside.

I have just finished a mileage check and around the city I am getting 31 MPH compared to 26mph before the rebuild also the car feels more responsive

regards JohnT
mnbrennan
Joined: Fri 24 May, 2013 18:30
Posts: 250

  Z3 roadster 2.0

Re: Eaton supercharger questions

Post by mnbrennan »

That's a good increase in speed!

Sent from my HTC One using Tapatalk
Image
Now: '99 Z3M Coupe in imola red
User avatar
Daz3
Joined: Wed 15 Sep, 2010 19:57
Posts: 534

  Z3 roadster 2.8
Location: Spilsby

Re: Eaton supercharger questions

Post by Daz3 »

Thanks for the info johnt I think I'm just going to rebuild the snout with new bearings and seals and possibly do the rear needle bearings while it's out. I was just curious as to what the bore and rotor tips should look like having never seen one stripped. Can't even find any decent pics on google!
Image
User avatar
BladeRunner919
Joined: Fri 17 Feb, 2012 20:18
Posts: 2225

  Z3 roadster 1.9

Re: Eaton supercharger questions

Post by BladeRunner919 »

jont wrote:
I have just finished a mileage check and around the city I am getting 31 MPH compared to 26mph before the rebuild also the car feels more responsive
Have you tried moving the waggly stick in the middle away from the '1' position? :D
Vic-Z3
Joined: Fri 11 Jun, 2010 19:28
Posts: 915

  Z3 roadster 2.2i
Location: Redditch
Contact:

Re: Eaton supercharger questions

Post by Vic-Z3 »

My experience is limited but ................

The rotors are housed central in the bearings at each end and rotate central to the casing.
They should not come into contact with the casing at all unless the bearings get knackered or
the rotors distort under extreme heat or rpm.
Scouring is a sure sign to me that there is a problem.

That is as far as my knowledge base goes on this subject.
----------------- BMW Z3 Das Beste Auto -----------------

Mein altes Auto riecht nach Nudeln, hat dieses Auto eine Wurst Geruch.
User avatar
Daz3
Joined: Wed 15 Sep, 2010 19:57
Posts: 534

  Z3 roadster 2.8
Location: Spilsby

Re: Eaton supercharger questions

Post by Daz3 »

jont wrote:Hi
I have just had my unit rebuilt and from what i can see the yours is in is very good condition
Also a suggestion I would advise is put a oil catcher tank on your pcv valve assy also a inline filter to cat any extra oil vapours my unit was a bloody mess when I stripped it down with all of the oil inside.

I have just finished a mileage check and around the city I am getting 31 MPH compared to 26mph before the rebuild also the car feels more responsive

regards JohnT

With regards to the oil catch can where would this be placed? On the hose that comes off the ICV then recirculate it back into the intake or vent to atmosphere? Thanks
Image
User avatar
jont
Joined: Tue 18 Oct, 2005 10:54
Posts: 82

  Z3 roadster 1.9
Location: Brisbane

Re: Eaton supercharger questions

Post by jont »

Connect hose to the PCV then into oil catcher can then out of can into intake manifold & put a fuel filter in between the outlet from the to the intake manifold.

Oh one more thing do not purchase a catcher can with a top vent it has to be a sealed unit, this is the type you want.

http://www.ebay.com.au/itm/121019674321 ... 1497.l2649

regards Johnt :shock:
User avatar
stu
Joined: Fri 10 Oct, 2003 17:49
Posts: 3540

  Z3 roadster 2.8 supe
Location: On the edge!

Re: Eaton supercharger questions

Post by stu »

As said by Vic, I think the scoring is not a good sign.

The clearance between the tips of the rotors and the casing need to be very fine and scores on both suggest there's play in your bearings or something has run through the blower, like dirt/sand and has abraded the surfaces. Basically, the pressure side will always try to find it's way to the none pressure side of the blower, so you're just wasting a whole load of energy if the seals have gone.

I'd suggest you contact the manufacturer or a specialist and get their opinion as there's litte point in putting a 'cream crackered' unit on the car that could potentially cause you some much bigger issues. I'd have thought there are several plating techniques that could be used to bring this back to serviceable, as essentially the casing's not a wear and tear item, nor are the rotor tips.

I'd sure as hell make sure I put in the best bearings of the appropriate spec, which I'd want the manufacturer to confirm.

Bimmerforums seems to have a lot of people with knowledge of FI/blowers.

We have a Vortech V2-SQ on our M52-TU 2.8, but it runs incredibly low boost, 6 psi. It's the ESS conversion and has been brilliant, for the passed 13 years!
someone in a minority once wrote:I know I'm in a minority
Image
User avatar
Daz3
Joined: Wed 15 Sep, 2010 19:57
Posts: 534

  Z3 roadster 2.8
Location: Spilsby

Re: Eaton supercharger questions

Post by Daz3 »

Thanks for the input again everyone found this thread which was helpful.
http://rivperformance.editboard.com/t70 ... 62-porting
Seems the score marks are common on this charger. I also found some pics online where the bearings had worn and the rotors are in a lot worse state at the end they've gone. I'm taking the eaton into a bloke at work tomorrow to see what he says. I did show him the pictures and he said looks like normal ware and tare.
Image
User avatar
Daz3
Joined: Wed 15 Sep, 2010 19:57
Posts: 534

  Z3 roadster 2.8
Location: Spilsby

Re: Eaton supercharger questions

Post by Daz3 »

Just to follow this up I took the charger to a bloke at work that's worked on them before and he said that the marks are just from general use and it's in pretty good nick! On closer inspection the marks on the rotors are just in the coating it's not worn any of the metal away again he said this can be caused by very small pieces of debris flowing through and is nothing to worry about as the tolerances are that fine your going to get marks. The bearings have no play what so ever so I'm thinking I may just change the oil and regrease the needle bearings and see how we go.
Image
jony9
Joined: Mon 05 May, 2014 18:01
Posts: 24

  Z3 roadster 1.9
Location: Cardiff

Re: Eaton supercharger questions

Post by jony9 »

Do you notice its a lot faster with a charger? I am thinking of doing my 1.9
jony9
Joined: Mon 05 May, 2014 18:01
Posts: 24

  Z3 roadster 1.9
Location: Cardiff

Re: Eaton supercharger questions

Post by jony9 »

Anyone?
Post Reply