QUOTE(J P Stein @ Jul 16 2009, 04:01 PM)
QUOTE(ghuff @ Jul 16 2009, 04:21 PM)
I laugh again that there is someone who thinks because an air cooled once detonated, and they backed off that there is no way detonation can cause damage. That is mind blowingly stupid.
Any of you are welcome to come play where I do & show me how much smarter you are than I. I'm reading a lot of words like "hate", "stupid", & "asshole"....the ass kissing smile was nice also. Too bad you clowns can't carry on a discussion without resorting to personal attacks.
The fact is that my engine did pre-ignite. Nothing broke and when I tore it down 7 years later, the piston tops, ring lands, rods & bearings showed no damage from that brief incident. Why piston tops you might ask?... because that is where detonation shows up most obviously. Rods can be bent from a few other causes and your pics show pistons in decent shape......they are whole for one and the tops aren't shown.
Here's a pic of the piston tops as removed from my engine....another after clean up. Nothing as trick as your T-4 pistons, but it was all I had. I noted that Robbie didn't show the tops of the pistons that survived his contretemps. His deduction that everything else is fine is simplistic....cause it ain't. There is crap all thru the oiling system.....but hay, what does a dummy like me know. Ya better ask Jake.
You laugh because ignorance is bliss it would seem.
Play where you do? Is that some invitation to a place where people have no ability to think critically or assume they know everything?
One engine you built had issues and did not blow apart? Wow, that is a great selection of experience to draw from! We should all bow to your wisdom and experience here, you are a pillar of the internal combustion friendly community here.
You are really arguing something you do not understand....
You know why pistons are in decent shape? BECAUSE THE RODS ARE THE WEAK POINT. When you have a nice forged piston that can hold up to the detonation, but the rod is at it's stress point that force has to go somewhere he who is above all and God. The piston takes it, the crank takes it and may flex, the rod? It shatters or bends/cracks.
Most obviously, you do not understand just where the results of detonation can show up, which is almost anywhere.
In case you were too busy jacking yourself off mentally and stroking your ego, you missed the fact that those factory pistons in my picture have held up fine to 600+whp with a turbo probaly the size of your motor. We are talking cylinder pressures beyond what your detonating motor would see. With that comes occasional detonation, and at those power levels with that kind of fuel and cylinder pressure, things come apart fast.
You are a clown yourself. So here is your discussion without attacks. You want to go for it? Because I can find you many examples of detonation and what it does to internals on various motors.
The last 4G63 I blew up knocked a rod in half out the block, piston looked great, the rod took the starter out too. It was detonation. The top of the piston looked fine. Lots of timing + detonation = broken.
You can sit there and post using words which are not terribly common to appear more intelligent than you are, while there are millions of examples of what detonation does out there.
You understand metal fatigues as well right? You understand that detonation pushes metal beyond it's normal loads encountered and that metal has a memory? Use that large brain of yours. Wow me with your astounding intelligence and logic.
I laugh because you are a clown.
Is that hard to understand?
(I have built many a motors, in cast iron blocks (various makes/types)facing ridiculous cylinder pressures, and have blown up a bunch for fun by cranking timing and doing other things. Others have blown due to simple detonation/preig+fatigue)
This experience comes when you hold such plebeian jobs as working at a junkyard with access to almost any car you can imagine and the ability to blow them up. *gasp*
I guess my real world experience with many different engines can not compare to your hypothetical intelligence and lack of the same experience! Oops!
So, since you are incredibly smarter than us, please tell us you did indeed reuse your motors internals after nasty detonation, knowing about metal fatigue. Please say that while trying to act like you are above most others in this thread.
(PS God of all things internal combustion, if you heard detonation and lifted it obviously was not bad gas which will blow a motor apart in short order since it's unfit to run period let alone just have a low octane and detonate lightly)
Your response can start with "I am sorry for making myself look stupid, I honestly do not understand what I am talking about, and next time I will shut up instead of mouth off about things I can not grasp."