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Old 10-03-2007, 12:18 AM   #1
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Default Puking Superchager.

Finally getting around to posting this, been busy lately, I sent Boosty a quick text from work the other morning, but since im sure he is very busy as well, he wasnt able to reply, thats fine though
Anyways. The other morning, i was leaving home, i pressed down the gas only to see i was boosting around 3-4PSI WOT, hmm, thats odd. Few moments later i was around 7 psi, upon returning home again was boosting around 10 psi, the norm. Open the hood, the SC pulley is a bit wet, and has streaks on it from the SC oil being forced outward from the input shaft, onto the belt, thusly, causing low boost due to slippage.
I clean it all up, decide to just change the SC oil and call it good. Insert a new plug in the end of the input shaft, the style that intense ships with there MPS units.
I make a 200 mile round trip this weekend, no issues at all.
Go to work on Monday morning, all is still good. Leave for lunch, what do you know, low boost, belt wet and slipping again.
Keep in mind the fluid level isnt really low, its right within spec. I detail the engine last night, clean the belt, fix the slippage.
Today at lunch i open the hood, and you can tell its been spraying into the rad support, hood, and fuse/relay cover, not alot, but enough, and I know its SC oil, it smells like it.
Pulley is wet once again.
WTF?
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Old 10-03-2007, 12:27 AM   #2
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Simple. The seals behind the intermediate plate bearings are leaking. Boost pressure is entering the oil/gear chamber from the compression chamber. this causes a high pressure in the nosedrive, and leaks out the nosedrive seal or vent plug, where centrifugal force spreads it onto the pulley and belt.

Or your nosedrive seal is simply leaking.

You can't replace those bearings and seals without a factory jig. You can change the nosedrive seal on the car.

You have to figure out for sure which is leaking.
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Old 10-03-2007, 12:33 AM   #3
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I was looking for a reason to replace that bastard, looks like I might just of, ill take a closer look. That pressure would probably cause some decent oil frothing too after a good run...may have to check that out.
Good thing its about to get parked for the year.
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Old 10-03-2007, 12:36 AM   #4
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Keep in mind, your ported SC won't be worth a core to CSC. But you only need his rotors and intermediate plate in your housing to fix that possibility.

www.rollingperformance.com can solve the other possibility. Figure out which it really is.
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Old 10-03-2007, 01:23 AM   #5
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Quote:
Originally Posted by willwren
Keep in mind, your ported SC won't be worth a core to CSC. But you only need his rotors and intermediate plate in your housing to fix that possibility.

www.rollingperformance.com can solve the other possibility. Figure out which it really is.
I have a few untouched SC housings for cores just incase
Just sent him an email.
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Old 10-03-2007, 01:38 AM   #6
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My old Gen 3 used to do that until I found out I was over filling it.
Adding oil to the bottom of the threads is overfilling it.
It should actually be about 1/4" lower than the bottom of the threads.
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Old 10-03-2007, 08:41 AM   #7
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I had a leaking seal on the nosedrive.

That'* where i'd start before replacing the whole charger w/o knowing if the pressure is leaking past the bearings.

You don't have that much mileage on it to assume the bearing seals are bad. The M90'* seem to be quite durable in this area. I'm voting on nosedrive end seal.
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Old 10-03-2007, 09:46 AM   #8
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Quote:
Originally Posted by BillBoost37
I had a leaking seal on the nosedrive.

That'* where i'd start before replacing the whole charger w/o knowing if the pressure is leaking past the bearings.

You don't have that much mileage on it to assume the bearing seals are bad. The M90'* seem to be quite durable in this area. I'm voting on nosedrive end seal.
I agree. I only listed the other nasty idea as the other possibility.
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