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When EPA put in restrictions on metal plating, auto manufacturers went with plastic facings over steel bumper. They are so soft, they nick, ding or crack if you look at them wrong, and Very expensive to fix.

Good, you found a reason for slightly low MPG before your truck caught fire from fuel leaks. I think getting that squared away will make you happier with MPG>

If I remember correctly, both you and 74M35A2 said you heard a snap when you first installed new heads. That was never resolved. I don't remember now if it was me or another member that suggested head cracked, check block for flatness. Well, Wild, if it was me, I would get that Rotella out of...

That article once again points out the importance of proper break in oil. If the film strength is too good, the rings never seat, and the wrong oil glazes cylinders.

Sorry about that. As I said, I only had about 50% success rate using "used but good" parts. Don't like short skirts or fewer rings - but I am an old school geezer. Look, you got nothing to loose now. If you did not use Deere break in oil, I would try it now, and load heavy, as gimpy and I...

A 30 year old vehicle is sorta like an old house. Never ending. I have both.

Get it up to operating temp and then get on it HARD before you do leak down. Climb some of those hills in higher gear with foot really into throttle. Load it up for a while. Used parts - I think a few hundred miles for break in. You did use break in oil, eh?

I agree, symptoms point to an overly rich mixture. Ethanol gas is a solvent, and dissolves old gums and crud in the tank and fuel system. It is possible some junk got into pressure regulator and it does not work right. I would not take it apart unless it is known bad. Install the pressure gauge...

No experience with your specific carb. I can tell you PCV will not cause flooding, in fact removing it will cause engine to run a bit rich. The carb mixture was calibrated to include air introduced by the PCV. Without that air, the mixture will be a little rich. That is a very simple carb. I...

Thank you for the information. I believe ring tension would have to be much higher with only 3 rings.

How many total rings?

Wildchild- any updates?

Good practice to replace rod bolts at every rebuild.

Sounds like a plan! Since you have use of dyno, I would follow TM. Don't see how you can hurt anything doing that. Absence of specific instructions, we all have our own ways of breaking in a new or rebuilt engine. Obviously some methods are better than others. I was never one to fire it up and...

That seems about right. Look at the top right picture in post 190. Both original and new pistons are standing side by side on a flat surface. It seems like his new pistons are about 1/2 inch shorter. The top of the new one seems even with the top compression ring on the old one.

Yes, I think we are saying the same thing with different words. Long skirt. I have no real world experience using fewer piston rings than the engine was designed for. The engine designers felt they needed 5 rings, so I suspect using a 3 ring piston with fewer compression rings is not good.

Jeep, the other issue is the much shorter skirts. The people who designed the engine seem to have done a good job. It has worked well for it's intended purpose. Successfully changing their piston design is above most people's pay grade. Pistons on a high compression engine develop quite a bit...

From what you posted, I think you did the right thing with the turbo. You had to replace or if still good, rebuild. Don't want to take a chance that turbo lets loose and dumps some debris in your rebuild. As I said before, I hate in vehicle engine rebuilds. You are a young guy, so not so bad...

Are you NUTS, Wildchild? You going to blow $800 on dyno charges to break it in? I thought you were getting use of dyno for free. You could have bought new rings and just break it in on the road, like everyone else does. Road break ins worked fine for me and other SS members who rebuilt their...