Is my block dead???
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TECH Apprentice
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From: Quebec,Canada
Is my block dead??? Well i went on the dyno today for retouching my tune after the new heads(prc ls6 stage 2.5),morel lifter etc etc.
-First run: i made 1 whp more than with stock head...weird smoke and smell(burn smell),we decide to go to the second run to do some test;
-Second run: at around 4200rpm the dipsick pop up and there was oil all over the place,there was also a lot of pressure/smoke coming out of the valley cover(front and rear),we also saw that i lost nearly 65 whp at 4000rpm from the first run...the car doesnt answer really well to throttle now;
-Third run(test run) at 4000rpm it smoke like hell from the valley cover,dipstick pops again,smoke,smell...everything.
No cooling leak,temp stay right a 190degree,idle fine.I did a test and cancel the catch can and pcv valve so there would be no restriction between the crank case and the air intake but it did the same thing...
So to my mind all the new top end put too much pressure on my block that did suffer from heavy piston slap and now it compress in the base...
What are you tought on that...block is shot???
-First run: i made 1 whp more than with stock head...weird smoke and smell(burn smell),we decide to go to the second run to do some test;
-Second run: at around 4200rpm the dipsick pop up and there was oil all over the place,there was also a lot of pressure/smoke coming out of the valley cover(front and rear),we also saw that i lost nearly 65 whp at 4000rpm from the first run...the car doesnt answer really well to throttle now;
-Third run(test run) at 4000rpm it smoke like hell from the valley cover,dipstick pops again,smoke,smell...everything.
No cooling leak,temp stay right a 190degree,idle fine.I did a test and cancel the catch can and pcv valve so there would be no restriction between the crank case and the air intake but it did the same thing...
So to my mind all the new top end put too much pressure on my block that did suffer from heavy piston slap and now it compress in the base...
What are you tought on that...block is shot???
I don't know if the block is shot or not... but after seeing the massive problems after the second run, why did you make a 3rd run?
If i seen the dipstick pop out, oil going everywhere and smoke coming out of the engine at any point... I would be tearing it down to the short block seeing what what the problem was and not making anymore runs until i had a damn good answer for what was going on.
If i seen the dipstick pop out, oil going everywhere and smoke coming out of the engine at any point... I would be tearing it down to the short block seeing what what the problem was and not making anymore runs until i had a damn good answer for what was going on.
Thread Starter
TECH Apprentice
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Joined: Jun 2006
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From: Quebec,Canada
I don't know if the block is shot or not... but after seeing the massive problems after the second run, why did you make a 3rd run?
If i seen the dipstick pop out, oil going everywhere and smoke coming out of the engine at any point... I would be tearing it down to the short block seeing what what the problem was and not making anymore runs until i had a damn good answer for what was going on.
If i seen the dipstick pop out, oil going everywhere and smoke coming out of the engine at any point... I would be tearing it down to the short block seeing what what the problem was and not making anymore runs until i had a damn good answer for what was going on.
I ve just bring back the car to my home(5mins from shop) and the car smoke from the exhaust and run like crap...
The 2 last run was some test run not heavy wot run up to 6800rpm.
Time to tear the whole thing down, nothing here indicates a healthy running engine.
Your block (literally) might not be dead, but I bet part of the rotating assembly is thrashed.
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Verdad Gallardo Thread Starter
TECH Apprentice
iTrader: (6)
Joined: Jun 2006
Posts: 373
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From: Quebec,Canada
Oil pump was new,so a good 55psi cold and around 40 psi hot at idle.At wot i would get pass the 65psi mark.
The block has nothing to do with excessive crankcase pressure. A busted ringland allowing pressure to get into the crankcase would certainly cause all his havoc or incorrectly hooked up PCV system if you have one).
If the block is trashed its because you have dug into the cylinder wall(s) beyond what a bore or hone will fix, it isnt because of high pressure in the crankcase.
If the block is trashed its because you have dug into the cylinder wall(s) beyond what a bore or hone will fix, it isnt because of high pressure in the crankcase.
The block has nothing to do with excessive crankcase pressure. A busted ringland allowing pressure to get into the crankcase would certainly cause all his havoc or incorrectly hooked up PCV system if you have one).
If the block is trashed its because you have dug into the cylinder wall(s) beyond what a bore or hone will fix, it isnt because of high pressure in the crankcase.
If the block is trashed its because you have dug into the cylinder wall(s) beyond what a bore or hone will fix, it isnt because of high pressure in the crankcase.
Pretty much sums it up. I would bet your block is rebuildable but you have a ringland busted... prolly #7. wanna see my #7 pics????
