Fresh rebuild, oil everywhere

[CFMCNC]

Originally Posted by JRyan

Second ring in upside-down?

Jerry

X2.Bill C.

[RJ Sledge]

Paul

I had a problem like that and it turned out to be the wrong size oil ring expander and rail set. They felt really loose when I put the motor together, and said to myself, if it seals up it will fly. Well, it was just as you described, pulled the motor down and replaced with a bigger expander and rail set and the car flew. If you are using Total Seal look at the label on the oil ring package and see what size is printed on it. They had sent a4.040 expander package while the top and second rings were for a finished bore size of 4.100. Believe I wound up with a 4.060 oil package set .

I always use a digital fish scale and pull a piston (with the oil ring package installed) through the cylinders to check for how much drag. I shoot for around 8 to 10 lbs. Its a little tricky, put try and keep it moving smoothly in the cylinder.

Good Luck

We learn a whole lot more from our mistakes than we do from our successes.

Hey, how long is your camper footprint? Look like it fits perfect without overhang.

RJ

[Mike Pearson]

I had some real bad problems with the gapless rings. After one run absolutely no compression. The engine would not start. Checked With leak down and 90% in all cylinders. Every ring was seized into the ring land both top and 2nd. I spoke to Total Seal and Patterson and no one could give me a good reason for the problem. I followed their instructions to the letter and used a premium break in oil. Definitely a ring problem.

[Tim Lisson]

Paul,

I'm sure there is smart engine builders out there that can make those gapless top rings work in a stocker set up, I tried and could not but I only do my own junk so take it for what its worth.... If it was me, I would pull the engine apart, scrub the cylinders with dawn dishsoap and brush them, remove the gapless top ring and throw them as far as you can, then find them and burry them so you don't try them again. Install some standard 5/64 rings and have fun.

They do seal awesome on compression, not sure what happens on the down stroke that makes them drink oil. I used two quarts in 10 dyno pulls and gave up. I heard of guys using a PCV set up to assist but with my tune port setup, it pulled oil out of the valve covers rapidly.

Good luck!

Tim

[Paul Merolla]

The plot thickens...
Today I installed new metal-clad Viton valve seals. Fired it up, and no smoke! As a side note, I originally had 6 qts of 30 wt. Valvoline along with a pint of Comp Cams break-in lube in the pan. Today I put in 5 qts of the Brad Penn since the cam was broken in.
Anyway, all was well until about 2 minutes in when the oil pressure gauge dropped to around 20 lbs. I immediately shut it off. Waited a few minutes and cranked it back up...had around 60 psi for a minute or so, then it dropped again. I'm thinking all these issues are related to filling the valve covers with oil. For some reason, there's either too much getting up there or not enough coming back down. Either way, it ain't good! I don't get it...same block and heads from last year. Different oil pump (Schumann low-volume), different head gaskets (FelPro MLS), pushrods, lifters, and roller rockers.
Is there a plug that could've gotten left out? Could the lifters be allowing too much oil up top?
By the way, I noticed the other day that the pressure on startup was 72 psi but after a couple minutes it started to "flutter" down to 55 or so. I have the 60-65 psi spring in the Schumann pump.

[Alan Nyhus]

Paul, did you change the filter with the fresh oil? -Al

[Paul Merolla]

Originally Posted by Alan Nyhus

Paul, did you change the filter with the fresh oil? -Al

Yes, I'm using the Wix Racing filters.

[Mike Pearson]

I would say you are too light on the oil ring. I usually try for 15 to 18 with a fish scale. That light has always lead to the same issue as you have now. Tweak the expanders to get a bit more ring pressure.

[Alan Roehrich]

A lot of oil in those cylinders, and what looks like scuffing on the cylinder walls, especially #2.

Can't be sure about the cylinder wall finish.

I run about 8# tangential tension on the oil rings, with a Speed Pro oil ring package, and Napier cut second rings. I do not run zero gap rings, but I do run Total Seal Advantage rings. The finish is absoultely critical, as is the bore being round.

[Bubbba]

I shoulda read the whole post. lol