Quote:
Originally Posted by stieger
Modding does not kill engines. FACT
Going into the internals of the engine and swapping out parts just puts more pressure on the system. So the OEM parts that had problems in the first place (cough*lifters*cough) may break sooner than say if the car was left stock.
Once again. Modding does NOT kill engines.
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Where have i heard that before? LOL
Quote:
Originally Posted by mikeSS
+1 i have the same cam setup as you of course, my shop that did the install says they have never seen a LS engine oil pump failure before on cars that they have done. for the last 10 years, and i must say i am willing to bet they have worked on more cars than most shops out there.
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The only oil pumps I have see fail have been 100K+ mile pumps and one BRAND NEW ported pump.
Quote:
Originally Posted by Camarowguy
I'm still sticking to my original theory of not having enough piston to valve clearance. The ls3 engines have no valve reliefs. So cam selection is important. And just because the same cam worked in your buddies car doesn't mean it'll be ok in yours. I learned that lesson building a 4 wheeler engine. I'm imagining that your shop, huggerorange, has installed this same cam and had no issues. So valve clearance wasn't actually checked and here you are left holding the bag. Why did it take so long? Well my guess is you had less than the minimum clearance required and when you ran the car hard you had ever so slight contact. Then the springs got some miles on them. Things got worse. And then you know the rest of the story.
I don't own a shop. I've build lots of engines though. From go-kart to lawn mower to atv to stock automobile engines to the pretty powerful engine in my former third gen. I had failures. I've learned from my mistakes. I now know what it takes to build a reliable engine. The most important thing is to check, check and recheck your clearances. I'm anxious to see if you cam pin broke and caused this. If that happened, well I could be wrong or the above I mentioned happened and help push that along. I guess we shall see.
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The type of problem you are describing would slightly bed a valve or two, not cause all this.