I am the king of carnage
11-16-2005 | 01:20 PM
#16
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From: Marietta, NY
Cracked cylinder walls are the result of detonation. How you got to the detonation is the result of tuning....or lack thereof!!
To accurately read the plugs you need to run specific tests including shutting down the motor at speed just after a ‘power’ run. Modern (yes, that includes the 944!) management systems will make reading the plugs difficult – not like the good old carb days!
Chris White
To accurately read the plugs you need to run specific tests including shutting down the motor at speed just after a ‘power’ run. Modern (yes, that includes the 944!) management systems will make reading the plugs difficult – not like the good old carb days!
Chris White
11-16-2005 | 02:43 PM
#18
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From: Sweden
Interesting to see someone start a thread on a enthusiast forum claiming to be the king of carnage and motivating it by having blown up two engines in no time, tuned it by looking at the plugs and being kinda drunk when driving.
Tell me, do you measure boost by measuring how long the one leggers are?
Tell me, do you measure boost by measuring how long the one leggers are?
11-16-2005 | 03:02 PM
#19
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From: Connecticut
Originally Posted by fast951
Sorry for your trouble, hope you get it sorted out soon. Would you please explain what -2 deg has to do with the 65# injectors? -2 Deg is timing, 65# is fuel!!
In seriously high compression motors (1:19+) or motors with a cam that's duration overlaps it is necessary to retard the timing and run high octane fuel to prevent piston detonation.
Alcohol motors are the worst for detonation as any fuel pressure loss will cause detonation. Gas motors can to that too but normally not as quick.
Am I wrong?
11-17-2005 | 08:17 PM
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From: Kalifornyuh
9fifty1: From the dish area in the pics, it looks like MY83-86 NA pistons - 9.5:1 according to the Kevin Gross FAQ.
Badcoupe: I didnt mean to anger you by that post if I did: it's just the image that came into my head when I read this. I suppose if I had the knowledge to read plugs and gain insight into combustion events in a cylinder, I'd use it too. It seems to me that a wideband solution provides a much quicker feedback loop for a modest investment.
Badcoupe: I didnt mean to anger you by that post if I did: it's just the image that came into my head when I read this. I suppose if I had the knowledge to read plugs and gain insight into combustion events in a cylinder, I'd use it too. It seems to me that a wideband solution provides a much quicker feedback loop for a modest investment.
11-17-2005 | 08:39 PM
#25
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Originally Posted by Matt Sheppard
9fifty1: From the dish area in the pics, it looks like MY83-86 NA pistons - 9.5:1 according to the Kevin Gross FAQ.
Badcoupe: I didnt mean to anger you by that post if I did: it's just the image that came into my head when I read this. I suppose if I had the knowledge to read plugs and gain insight into combustion events in a cylinder, I'd use it too. It seems to me that a wideband solution provides a much quicker feedback loop for a modest investment.
Badcoupe: I didnt mean to anger you by that post if I did: it's just the image that came into my head when I read this. I suppose if I had the knowledge to read plugs and gain insight into combustion events in a cylinder, I'd use it too. It seems to me that a wideband solution provides a much quicker feedback loop for a modest investment.
11-18-2005 | 03:51 AM
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"Interesting to see someone start a thread on a enthusiast forum claiming to be the king of carnage and motivating it by having blown up two engines in no time, tuned it by looking at the plugs and being kinda drunk when driving.
Tell me, do you measure boost by measuring how long the one leggers are?"
Nice Anders.
Tell me, do you measure boost by measuring how long the one leggers are?"
Nice Anders.