*Updated* So why is my motor smoking?
 

hey guys, i recently put a d16z6 into my hb and lately ive been seeing a little puff when i take off. i rebuilt the motor with a new bore and rings however i did not replace valve seals. it only puffs when taking off right now. The wierd part is that it doesnt do it everytime. it started after i got it tuned, then i put a full exhaust on it. anyideas? Oh, and there is a plug in my turbo exhaust housing that used a old o2 sensor to plug it, would that make any difference? :P


*Update* last weekend i found a small exhaust leak near my wastegate, yesterday i welded up the crack and took it out for a drive. The power is back to normal but it still smokes. So today i picked up a o2 sensor plug to remove this old one wire o2 sensor from the turbo's exhuast housing. i replaced it and drove it to the bank. The car did not smoke at all really. Could this be the original cause?

*The car did smoke once when taking a left turn onto my street after putting into 2nd gear which i think is my oil drain getting temporally backed up ever see anything like that?

Re: So why is my motor smoking?
 

Do a compression test followed by a leak down test.Valve seals could be bad or a few other things.

Re: So why is my motor smoking?
 

well upon further inspection i realized that it is white smoke coming out of the exhaust. i checked my coolant overflow tank and it is low so i think i have a head gasket leak. when i built the motor i used a cometic gasket, i torqued it to spec following cometic's instructions however do i need to retorque after 1000 miles?

Re: So why is my motor smoking?
 

Usually no.Are you running head studs or stock bolts?You can try retorquing it for what its worth cant hurt.

Re: So why is my motor smoking?
 

arp studs

Re: So why is my motor smoking?
 

What did you torque them to and what did you use for lube on them?

Re: So why is my motor smoking?
 

arp supplied lube and their specs of 60 ft lbs

Re: So why is my motor smoking?
 

Check for leaks first; I would considering it will take awhile if you have to take the head off.

Pull the oil dipstick; is there coolant in there?

If so, I'd say a head gasket either isn't installed right/torqued.

Is the motor boosted? Have you given it a 500 mile break in period before beating on it? :6

Maybe came across some head lift?

Re: So why is my motor smoking?
 

no coolant in oil, i tried to out of boost for the first 300 miles. Saturday i will check head stud torque, i think if i do take the head off i will have it resurfaced and put a oem honda gasket on instead of the cometic

Re: So why is my motor smoking?
 

a general rule of thumb when using ARP studs is to install them torque them down,and break them loose again.. do it about 3 times to get the proper strech from the bolts.. check your torque and do a leak/compression test.