i was running 20w50 oil in it then i changed it to 5w 30 and now it smoke alot more, the thinner oil just goes right through the turbo seals.

sounds like you have an exhaust leak.. the smoke coming off the turbos is exhaust gas..



the coolant smell above the turbos can be a couple of different things.



#1 there are 2 rubber hoses that connect to coolant hardpipes for the turbos

#2 Copper washers which connect the hardpipe to the turbo.. those can go bad and leak.. it happened to me.

#3 I'd check your downpipe/precat gasket for leakage of exhaust.

take the cap off the coolant, start the car.. stand and watch the coolant while the car is running. When the car gets to OP TEMP the coolant should move a lil' bit from the thermostat opening up.. now if you start to see bubbles popping around in the coolant, you A) have a coolant leak outside the car and air is getting in, or B) your Coolant O-rings on your motor are allowing exhaust gasses to get into the coolant.



I'm leaning towards (A) has i have pointed out a couple things it could be.

the guy at my work said there is a seal in the turbo that hold the oil in and its probably old and cracked he's pretty sure of it cause after i put thinner oil in it, the turbos smoke alot more now, how hard was it to replace the copper gaskets in the hard pipes?

he's right about the oil seal.. they get hot and old.. and old dirty air intake filters make them die out quicker.



The coolant copper washers will require you to remove your twinturbos and then you can disassemble the hardpipes and replace the washers.



I can try to take a picture of my old twins by the weekend for you showing you exactly what i'm talking about if you would like?

also what is your Vaccum at idle? if you have a boost gauge?

yah a picture would be awesome, i get a whole range of vac. sometimes its 17-18 sometimes its 12-15

your vacuum sounds good, i doubt you have any reason to rebuild your engine. Sounds like your turbos are the area of concern. Which in a good way are easier to fix and cheaper. https://www.nopistons.com/forums/pub...IR#>/happy.png

i've had the car for a little more then a year now, i've been saving up for a turbo upgrade....looks like i should start saving a little more....

well there are lots of options.. rx-7store.net has a lot of different upgrades you can buy as do a lot of the other shops around the internet.



I'm using a T-78 with a GT79 upgraded wheel.. yet to drive it.. still doing install, waiting on gaskets and my FMIC.. I'll have pics of it soon. But for now you can fix that washer and the coolant problem will go away. Do you still make good boost 10-8-10?