justa4banger

ok i swapped in a d16z6 into my 91 hatchback and the old motor out of it burned oil and smoked really bad. this past weekend i replaced all the gaskets and the valve stem seals and it still smokes. its only in high rpms. im wondering if this could still be in the exhaust from the last engine or do you think the z6 is doing this. thanks for the help

also i know wrong section probably but how much does a engine rebuild usually cost (not back to stock either)

robfrmny21

if its only while you accel then its more then likely your pistons rings

wrenchez81

^^^^^^^^^^^^^^^^^^^ true!! .............are you overfilled on oil???? that will cause you to burn oil at a given rpm....

4drkidd

Rings..

justa4banger

thanks guys ill check that out and no my oil i right at the full mark

instructor74

your sure you used the right valve seals for the intake and exhaust they are a diffrent sizes

justa4banger

yup they fit perfect

Marauder

white smoke or black smoke?

white (blueish) is oil, if its dark in color that's just the motor running rich.

justa4banger

i know what the colors are im wondering if its from the old engine or if my swap is doing it thanks though

Marauder

Your old engine wouldn't still be doing it with the new one, if you are thinking it left oil in the exhaust.

I'd say its the piston rings.

revhardallday

piston rings

IhateworkingoncaRs

I know you said it does it at high rpms, does it do it when your accelerating or deccelerating? acc would be rings/wall and decc would be valve seals.

justa4banger

it does it when its accelerating like when i get past like 3 grand or little before that

but thanks guys ill check it out this weekend. much appreciated

robfrmny21

rings my friend, take the motor apart hone it with a drill gap new rings and put it back together

justa4banger

thanks for all the responses and yup once i get the money im just doing a full rebuild so later on down the road i can run more boost