shiggsy
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posted April 26, 2008 12:48 PM
Safe EGT Limit
Can anybody tell me what the safe EGT limit is for the ZX12 (A2) ?
  
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VincentHill
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posted April 26, 2008 01:03 PM
1350 MAX 1400 Danger and 1300 Cool
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shiggsy
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posted April 27, 2008 01:23 AM
 Edited By: shiggsy on 27 Apr 2008 02:51
Thanks Vincent. My injectors keeping switching between 15% and 12% when I'm on the motorway giving me an AFR of low to mid 14s at 12% which I try to stay out of and can get out of with small throttle movements .
I have just had EGT probes put in the exhaust headers and now I can see at the 14 AFR range I'm getting cylinder temps of around 1382f (750c) on three cylinders and 1414f (768c) on cylinder 4. Looks from your answer I was right to keep it out of the 14 AFR range.
When I took the headers off to get the weld bungs put in the exhaust ports of cylinders 1-3 were all black but port 4 had white markings in it so the traceline of cylinder 4 running hotter than the other three would appear correct. Looks like I have some valve adjustments to make.
Thanks again.
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entropy
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posted April 27, 2008 02:44 AM
quote:
.... Looks like I have some valve adjustments to make.
are you sure your injectors are spraying equally???
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shiggsy
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posted April 27, 2008 06:36 AM
Edited By: shiggsy on 27 Apr 2008 07:44
At certain points the injector readings can seperate a bit with Injector 1 consistently reading slightly higher than the others (there are points where it will also read lower than the others). The biggest split I can see at anyone time between highest and lowest injector is 0.9%. Injector 4 (for the hot cylinder) is not reading lower than any of the others.
I have injectors 2,3 and 4 going into a DL32 with injector 1 going into an SSI4 so I thought it may be the different units being the cause, but the reading followed injector 1 when I swapped the wires aorund. I also have 2 sets of fuel injectors and Injector 1 reads slightly higher for both sets.
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dougmeyer
Needs a job
moderated
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posted April 28, 2008 07:52 AM
Vince is being a bit conservative (which is probably good). EGT are ok up to 1425 or so continuous with spikes to 1475 while tuning not uncommon.
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shiggsy
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posted April 28, 2008 10:45 AM
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VincentHill
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posted April 28, 2008 12:16 PM
quote:
After I melted an engine I became very conservative! But not a Republican! 
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dougmeyer
Needs a job
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posted April 28, 2008 03:21 PM
Well, you'll get there sooner or later.....
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narider
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posted April 30, 2008 05:28 AM
quote:
Well, you'll get there sooner or later.....
Todd
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VincentHill
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posted April 30, 2008 09:29 AM
quote:
quote:
Well, you'll get there sooner or later.....
Todd
Let us hope the sooner or later is not the Dreaded "R" Word 
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narider
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posted April 30, 2008 09:58 AM
quote:
Let us hope the sooner or later is not the Dreaded "R" Word
Race? 
Todd
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VincentHill
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posted April 30, 2008 04:40 PM
quote:
quote:
Let us hope the sooner or later is not the Dreaded "R" Word
Race?
Todd
PERFECT!!
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Made History @ Daytona and still one fast old man!!
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narider
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posted April 30, 2008 08:11 PM
I thought you'd like that ;-)
Todd
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