Heath

I installed a "new" b20a in my 88 lude since the last one that I rebuilt began smoking after 4,500 miles. Well, now this one is smoking also. Thing is it only happens at idle. I tore down the old engine and found nothing wrong so I assume it has something to do with the oil lines/turbo, or crankcase ventilation.
-My oil drain is straight and enters the pan above the oil level.
-My feed is -4an with a restrictor valve
-I have an oil sandwich adapter along with an external oil cooler. The line exits the adapter on the block and runs to the cooler (where the coolant recovery tank once was), then on the return from the cooler to the adapter there is a "tee" maybe two feet from the oil cooler exit where the oil feed line connects for the turbo.
-The turbo is in good condition and I've even swapped it to rule it out as the problem. The smoke could possibly be coming from the turbo but if so it's no fault of the turbo...maybe the oil lines or something else?
-I have the pcv running to a catch can and the other valve cover opening has a breather filter. Another line from the catch can is routed to the intake of the turbo. I plan on changing this setup to a slash cut pipe in the exhaust very soon.
Am I missing something here that would cause my car to smoke only at idle? It's oil smoke for sure. It's not the valve stem seals or the pistons rings either.
Ideas?

ward

see you need a b15b2 and you wouldnt have that problem

Heath

Nope it's a different head. I don't expect it to be the valve stem seals.

4g63t_EGMonster

run a catch can and see if its just blow by

Zeniceguycrx

what colour smoke

NCHATCH

turbo seal?

Heath

Catch can was empty. Today I did the slash cut exhaust to the PCV line on the valve cover. I removed my old plugs and threw them away. My new plugs that were supposed to show up at advance auto by 40 today didn't show. Now I can't test out the new ventilation setup until they arrive in the morning.
NGK bcpr7es plugs for $1.77 each. Not too shabby. I'm going to gap them nice and tight and see what happens.
The smoke is bluish-gray.
The turbo was in great shape when I installed it not long ago and shouldn't be the problem. It's only seen 6-7psi at the most. Again, the oil feed is a -4an w/restrictor valve. I'm actually going to start it after installing the plugs in the morning and run the oil feed in a clear bottle to see what kind of flow I'm getting. At least I will know if there is an obstruction in the lines. Of course I will only let it run for a sec so that I don't starve the turbo. I figure it should be fine at idle.
The oil drain has a very small leak but is a straight shot to the pan and there are no kinks.

BoostedBSeries

i think im having the same problem. i suspect my turbo seals. bump for an answer

marc_vtec

thread revival

i have the same problem


any ideas?