Supercharger Leak - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-27-2006, 11:17 AM   #1
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Jul 2005
Location: Cincinnati, Ohio
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
jastek1 is on a distinguished road
Default Supercharger Leak

I just got my new coupler from Intense, but until I have the time to replace it, I have taken the belt off and I'm driving "naturally aspired" (I miss the boost already). After two days of driving without the belt I noticed that the bolt on outside of the pulley is wet and dripping SC oil. I guess the leak is now noticeable since the pulley is not spinning off the leaking oil.

When I pull the nose to replace the coupler, what do I need to do to fix this leak?

I did a search for other posts, but can't find one that gives me a definite answer. Is it the breather cap, or is it the shaft seal ?
jastek1 is offline   Reply With Quote
Old 11-27-2006, 11:23 AM   #2
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Ok, first off we need to ask for this to be moved to the Force Induction area to get you better exposure to those that can help the best.

To change a coupler:
New coupler
2 bottles of GM SC oil
1 small tube of GM Red Gasket Maker

Disconnect battery
Remove alternator
Drain oil from SC with sprayer pump from old spray bottle
remove 8 or so bolts holding nose drive on SC (dont' forget the one that is postioned straight down into lower intake manifold.
Slide nose drive off
Remove coupler
Clean all surfaces
Put new coupler in
Put red gasket maker on nosedrive side.
Put nosedrive back on
Bolt and torque.
Put alternator back on,
Connect battery
Add 2 bottles of SC oil
Cap and call it done.
BillBoost37 is offline   Reply With Quote
Old 11-27-2006, 12:04 PM   #3
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Jul 2005
Location: Cincinnati, Ohio
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
jastek1 is on a distinguished road
Default

Thanks for the step-by-step. I was pretty sure how to replace the coupler and you confirmed that for me.

My question was, how do I stop the leak at the pulley.
jastek1 is offline   Reply With Quote
Old 11-27-2006, 12:31 PM   #4
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Is the leak behind the pulley or in front. Sounded like it was coming out the breather hole. Which.. should be able to breath.
BillBoost37 is offline   Reply With Quote
Old 11-27-2006, 12:34 PM   #5
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

If it'* coming out the breather hole, it'* because your boost pressure is getting past the rotor seals into the oil cavity. But if it'* not running, that doesn't make sense. How much is coming out? Is it possible it was oil from before the belt removal?

What'* your oil level?
willwren is offline   Reply With Quote
Old 11-27-2006, 12:52 PM   #6
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Jul 2005
Location: Cincinnati, Ohio
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
jastek1 is on a distinguished road
Default

The leak is coming from the bolt side of the pulley. It is leaking around the bolt. The back side of the pulley (nose side) is dry. It appears to be steadily seaping out around the bolt. I dried it off this morning, but it is soaked again and slightly dripping.

I have not checked the oil level yet, since I only noticed the leak a few days ago when I took the belt off.
jastek1 is offline   Reply With Quote
Old 11-27-2006, 12:59 PM   #7
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Well, the earlier M62 superchargers don't have that breather, so I'm at a loss to help you with it. Are the M90 breathers replaceable? Don't most of you guys that 'hub' just plug them anyway?

Does INTENSE sell the plug?
willwren is offline   Reply With Quote
Old 11-27-2006, 01:21 PM   #8
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Jul 2005
Location: Cincinnati, Ohio
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
jastek1 is on a distinguished road
Default

Where is that plug located ?

I have not had the pulley off, so I can't picture where it would be.

If the pulley is off, would there be enough pressure to cause a leak at the breather?

Intense sells the snout seal, but not a breather cap/seal, at least that I could find.
jastek1 is offline   Reply With Quote
Old 11-27-2006, 02:01 PM   #9
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

On the M90, the breather cap is simply a solid screw in type plug. Which is why I never understood calling it a breather.

Can you get a pic of this leak, I'm interested to see the amount of actual leakage.
BillBoost37 is offline   Reply With Quote
Old 11-27-2006, 02:32 PM   #10
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Jul 2005
Location: Cincinnati, Ohio
Posts: 122
Thanks: 0
Thanked 0 Times in 0 Posts
jastek1 is on a distinguished road
Default

I don't have my camera with me, so I will take a picture tonight. I will completely dry it off before driving home tonight and then take the picture when I get home (after a 30 mile drive).

If it is the breather cap that is leaking, wouldn't there be oil on the nose side of the pulley, rather than the bolt side?
jastek1 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
93 LeSabre Front Driver Side Water Leak and back passenger leak Kimberly Buick 37 05-04-2014 03:40 PM
Supercharger- Exhaust leak question???????? gutterchris 1992-1999 2 06-09-2007 10:52 AM
Supercharger oil leak boott 2000-2005 8 12-19-2005 10:37 AM
Supercharger Oil Leak Archon 2000-2005 3 08-13-2005 01:37 PM
supercharger vacuum leak really isn't? billha Forced Induction 3 05-17-2005 12:34 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 04:42 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.