I have just swapped a Fully Built and Superchaged b20 vtec into my EF. It is built top to bottom with all new part including rings and oem honda valve seals and is now in the break in phase as of 5 pm today. ive put 115 miles on it today just puttin around and i would notice a heavy smell of possibly some oil mixed in with the excess gas that i know is burning. i have the car tuned for idle and part throttle to break in. by the way its the hondata s200 with boost. and i wasjust wondering in the phase where everything breaks in, should i be burning oil? if so, how much and how long should i break it in before i get a full tune on it. im think between 500 and 1000.

 

1. When you build a motor, you dont baby it to break it in, you beat the **** out of it.

2. I've noticed, at least for me, that any high-revving VTEC engine consumes a little oil... if you smell it though, there might be something more wrong there.

 

What sort of oil?

I would bet your smelling fuel, but i dont know, im not there to sniff it.

 

the thing is though im seeing blue smoke drift by me when i pull up to a red light.

 

The obvious question: Check your dipstick. Are you overly-full?

 

details on "fully built" engine, what pistons, what rings, was it bored/honed, what kind of oil are you using for break in, what does your af ratio look like ect?

 

ok it has REV rods SRP pistons Honda rings refinished crank and honed block. all parts are brand spankin new.

 

oh yea and i am just running Valvoline non synthetic 10w30 to break it in

 

Switch to a straight 30 non detergent oil for break in. SO the block was just honed and the srp's were dropped in with new rings? forged pistons require looser tolerances than the stock cast pistons. How is your pcv system set up? Normally honda rings seat pretty quickly.

 

there is one BIG problem with your break in. YOU DO NOT RUN OVERLY RICH WHEN BREAKING IN YOUR ENGINE!!!!!! YOU WILL WASH THE RINGS OUT!!! just ask H-T member chad about his B20VTEC that washed out. You need to run a healthy tune until it is properly broken in and then tune it on a dyno. There is nothing worse for an engine when breaking it in then having an a$$ load of fuel washing the oil off of the cylinder walls when it is trying to break in.

 

ineresting. the smells have kinda disapated. i think it was because my exhaust was lined with oil and fuel from driving my last motor home with a blown headgasket and it was rich as ****. so ithink iot has subsided. im not really beating this motor up. does anyone disagree with that. i dont understand why the breaking in phase should be so harsh. and what oil do you think i should use to break it in?

 

yea, when i did a motor swap one time, my other car was smoking and when i started up the new motor i was super pissed because of the smoke later it went away and never came back. I believe it was oil in the exhaust system from my blown motor

Nick