Rotary Car Club - View Single Post - Paxton/Nelson supercharger issue - losing fluid, occasional large exhaust smoke cloud

MmSadda · 04-15-2012, 09:21 PM

Hey guys,

I've got a Paxton/Nelson SN-89 supercharged 87 6-port. Two days ago on the way home from work, after a downshift to 3rd during deceleration on an interchange, I got a large sudden cloud of blue or grey smoke from the exhaust.

Engine temp was fine, and it still boosted just fine afterward. There was no discernible loss of power. Upon inspection at home, all fluid levels were okay except the lubricant for the supercharger (which is automatic transmission fluid, for what it's worth,) which was below the low mark on the dipstick. I filled it to a bit over the high mark on the dipstick, and let the car sit 'til today. I tried driving it for about 40 miles, and hit boost a few times. About the second time I hit boost, I got the smoke from the exhaust again. Checked the supercharger lubricant again, and it's back down to about 1/3 of the way above the low mark.

So, what's happened? My gut reaction is that I blew a lubrication seal of some sort inside the supercharger, and I'm seeing that come out the exhaust, but I'd like to hear ideas from anyone who may happen to have input.

Thanks,

Collin

04-15-2012, 09:21 PM	#1
MmSadda BOOSTED COLON Join Date: Feb 2008 Posts: 88 Rep Power: 18	Paxton/Nelson supercharger issue - losing fluid, occasional large exhaust smoke cloud Hey guys, I've got a Paxton/Nelson SN-89 supercharged 87 6-port. Two days ago on the way home from work, after a downshift to 3rd during deceleration on an interchange, I got a large sudden cloud of blue or grey smoke from the exhaust. Engine temp was fine, and it still boosted just fine afterward. There was no discernible loss of power. Upon inspection at home, all fluid levels were okay except the lubricant for the supercharger (which is automatic transmission fluid, for what it's worth,) which was below the low mark on the dipstick. I filled it to a bit over the high mark on the dipstick, and let the car sit 'til today. I tried driving it for about 40 miles, and hit boost a few times. About the second time I hit boost, I got the smoke from the exhaust again. Checked the supercharger lubricant again, and it's back down to about 1/3 of the way above the low mark. So, what's happened? My gut reaction is that I blew a lubrication seal of some sort inside the supercharger, and I'm seeing that come out the exhaust, but I'd like to hear ideas from anyone who may happen to have input. Thanks, Collin