hondaon18's

So i had my b18c rebuilt cause i was burning alot of oil . I had very low compression on my cylinders . Any way i had a basic rebuilt nothing fancy cause i wasnt planning on boosting or racing it just wanted it to be a normal engine. So i had this tuner shop with alot of experience work on it. Any way my question is i know i have to break in the motor . And i was told not to run synthetic till my first three oil changes so im running 5 w 30 pensoil but i notice when i excelerate I see some smoke in my rear view mirror . Now should i be worried cause im running regular oil and b18's are known to burn some oil ? i also check my dip stick and it shows low oil , and im hoping that i didnt get ripped off

S2BumpsticksGSR

How many miles have you put on this rebuild? You are engine breaking(downshifting) in all gears I hope(to properly seat rings). Keep your oil topped off for sure. Pull the plugs and have a look at the top of pistons for wetness and do a compression check on their work.
You might try cleaning/replacing the pcv before anything, they can make b series smoke.

hondaon18's

Thanks for the response and yes I'm downshifting and I want to say I put around 2100 miles on it I keep topping off my oil cause the money I spent on it

S2BumpsticksGSR

I really hope they didn't just hone out old cylinders and slap the old pistons back in with new rings. To me, a rebuild is when the block is machined, not just honed. There seems to be a mindset that a hone is a rebuild- false. If you ask me a hone is a refurbished(temporary) engine. Even if the cylinders are within spec, put new pistons in(I hope they did). Compress check and see what #'s+ replace pcv if you haven't already.

hondaon18's

One thing for sure is that they sent my block to get machined so they put in the oversized piston head and rings so I know that it was machined .