What do you guys think? I blow oil out of the front seal under boost(newer seal from ATI). One of the guys in another recent thread ran dual lines with his vortec and that fixed the problem but I dont see a place to put an aux. line with my ATI. I have rebuild instructions from ebay so I was thinking I could open the case and tap another return. I'w worried about dumping the oil too quickly though. I'm pretty sure the return line is in the correct place now-about 2 1/2" from the top of the oil pan in the drivers side corner. Any thoughts?

 

I seriously doubt there is an oil return problem. The oil feed nozzle has only a small pinhole, so the return flow is not much.

Verify that the oil return is as straight as possible & in a continuous down hill direction so that oil flow in not impeded. Any loops or uphill runs in the hose can cause oil buildup.

without a picture, I'm not sure you have the oil return in the correct place. But I doubt this is the problem. It sounds like you may have a crankcase pressure problem. This may cause seals to leak in the motor as well as the charger. Does it leak under normal driving? What type of breathers are you running in the valve covers?

Let me know & I'll try to help.

 

Don't doubt the capability of that little pin hole in the nozzle to flow oil. I'd agree with you with a stock oil pump setup lonnie, but with an HV pump, that thing flows like crazy. I was amazed when i pulled the oil feed on my vortech and ran it in a pan at idle for about 15 to 20 seconds. I had to do a dual drain setup just to help. My old setup had the single drain in the exact same place and configuration as this one was and never leaked out the front seal, but the HV put it over the top and was pumping too much in there too fast. But thats a HV setup. I don't see anywhere in his sig about an HV pump, so i'm with you. He shouldn't really have a drain problem assuming the drain is in the right place and set up correctly. I'd be worried about the crank case pressurizing too. Stock pistons? Maybe a ringland issue? You could do a leak down test to check for sure, or maybe the quick inside the valve cover check looking for blow by.

Ken R.

 

Lonnie- the return line is pretty darn straight. I'll get a pic soon showing where it goes into the pan. As for the oil pump, Im pretty sure it not a HV but not positive so I'll have to ask the previous owner. I checked for blow by by taking off the oil fill cap and I didnt feal anything so I think I'm OK. This is on a 8.5 CR motor with 25K on the rebuild by morgan motorsports-not sure what brand pistons and rings though. I'm not using any breathers on the valve covers. The passengers side cover is basically venting to atmosphere. There is a 90* elbow going into the cover and some hose ran alongside the the motor to under the car. Hope this helps and I'll get pics soon-realized blower is off the car so the pics will just show the location on the pan.

 

That hose coming from the passenger side valve cover should be going into the intake side of the charger. Does it? You should make sure. Also, does it start leaking out of the boost or only when you start getting in the boost, and how much driving before it starts leaking?

Ken R.

 

A P600B flows about 1/2 qt/min @ 50 psi and 5w30. You shouldn't need to add a second return. Make sure the return you have isn't plugged up with gunk.

 

I installed a new hose and -8 fitting recently. The blower was serviced less than 1500 miles ago so the only thing to be clogged would be the fitting on the pan. I still need to get some pics up and I'll try for today when im adjusting the valves. As far as the hose going into the blower inlet, what is the exact purpose? I know some people dont do this and some times just runa breather on the valve cover. Thanks guys

 

The hose in the inlet of the supercharger draws a slight vacuum helping to purge the crankcase of vapors.

 

thanks. Ill get pics tomorrow-screwing around with the valvetrain today and didnt have time.

 

well I really thought about things and I know oil does not drain from the return line when I have it disconnected from the blower so I know its above oil level. I was looking at the front seal today and it sure doesnt look centered so I think thats my main problem. I had the seal replaced 1000 miles ago so I really dont know what to think as far as the job goes from ATI. They pressure test the units but that means nothing in the real world. fortunately I have a seal and instructions from eBay on how to rebuild the damn thing so I might have to give that a shot. Hopefully it all works out.........

 

Good luck on the rebuild. I've replaced the seal on mine and had no problems with it since.

Before you do that though check everything first. Make sure the hose from the valve cover isn't stopped up. It doesn't have to go to the filter. I have just one hose from my pass. side cover venting to atmosphere. I left the rest of the pcv system intact.

How long has the unit been on your car?

 

Right now I'm doing the same thing with the hose from the passenger side valve cover. Thanks for bringing that up bc I was thinking about changing it. Ill change the seal pretty soon but have decided to leave most everythig else alone. The blower has been on this car for about 6 years and has seen some miles so its been rebuilt a couple of times.

 

Thanks for the pulley Mark! I didnt get instructions with the last one and just used an impact to install it. Is heating the pulley ABSOLUTELY necessary?

 

You'll only have to heat it if it won't slide on. You don't have to use a torch. If you'll put it in your oven @ 250 degrees for 20-30 minutes it should slip right on. Use good oven mitts. There is nothing that should make it smoke and leave a taste in your oven.

You're welcome!

 

I found the source of my leak after replacing the seal yesterday. I suspected something was off center from looking at the old seal that was replaced by ATI. When I installed the new one it fit the exact same. Its just not a perfectly centered fit and would cause the problems the blowers had for years. Everything still works but just a bit of oil is sprayed out the fron seal.