MaddMaxx

Well I have been driving like crazy to get some break in miles on my new stroker motor. Was at about 570 miles today when I was tempted to get on it. I have been getting on it a little here and there but today I really hammered it. When I shifted into third at about 6000 rpms the car blew a cloud of smoke (huge) out of the exhaust. My temperatures oil and water never changed, my oil pressure never changed, and I smelled no obvious smells and saw no leaks. I pulled over checked all my fluids and looked for leaks car looked great. Put her on the road and hammered the heck out of her and could not duplicate the smoke.


Any ideas?

Nathan Plemons

You may have just seated the rings. :confused:

MaddMaxx

Nathan,

Is that good or bad?

Nathan Plemons

Well if it's not smoking anymore I guess it would be a good thing.

scorp508

What color? If its the first time you really hammered it you may have just blown out a bunch of junk that was sitting in the exhaust.

MaddMaxx

I was disappointed, because do to the smoke I could not tell if that M3 was 5 or 10 car lengths behind me. :flag

JAKE

Here's my experience of ring seating.

I use to build a lot of BB Chevy engines for several 1/4 mile drag racing teams in the Chicago area. All were 8 second NA cars and all but one had only one carb.

I'd usually start off the season with a fresh engine - new rings and bearings and other tune up stuff (springs, touch up the valve job, etc) - and I would re-freshen the engines sometimes twice during the season. The idea behind this was preventive maintenance and to keep the cars competitive in the hotly contested Super Gas and other classes.

I could take the trailered cars with their fresh engines, which had only enough running time to set the timing and stabilize the temperatures, and head straight to the burn out box and the car would run virtually the same ET and MPH as it had before the freshening.

I attribute this to the Speed Pro five over single plasma moly rings. So I'd have to say that using Speed Pro plasma molys with their standard tension SS50U oil ring set, ring seating is almost instant.

Of course I run that ring package in my Vette too.

I don't know what ring package you're running, but I suspect that for that instant, the A/F ratio went extremely rich. I don't think that, with an engine as fresh as yours, there would have been enough time for carbon to build up that would have blown out when you nailed the loud pedal.

Just my thoughts.

Jake

Jake

MaddMaxx

As a side note the tune I am running was put on the car with the tuner never seeing the car run over 3500 rpms. I am going to run a few runs right now and will get back with you guys.

max