Haltech Timing drifting with RPM
#1
Timing drifting with RPM
I am aware that once timing is zeroed and locked it should remain fixed to what ever degrees you have it locked to. I notice on my car if I lock the timing and rev the engine while using the light. It will drift slowly towards retard approx. 1degree per 1000 rpm. So by 5000rpm it will retard 5*. When I let it back to idle it will go right back to where it was locked.
What is the cause of this and how can I have it rectified?
What is the cause of this and how can I have it rectified?
#7
It wasn't me!!
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If your seriously concern about timing drift as how I am, you could run on of these:
https://www.rx7club.com/vendor-classifieds-276/gb-full-function-engineering-fd-13b-rew-trigger-kit-947029/
https://www.rx7club.com/vendor-classifieds-276/gb-full-function-engineering-fd-13b-rew-trigger-kit-947029/
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#8
www.lms-efi.com
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If your seriously concern about timing drift as how I am, you could run on of these:
https://www.rx7club.com/showthread.php?t=947029
https://www.rx7club.com/showthread.php?t=947029
With the E8 he cannot.
#10
I attempted to set the trigger angle vs rpm map last evening. Kinda scary free reving engine as high as 8000 rpm to dial out tis drift, however i think I got it pretty close. It took me about an hour to do since I paused several times to let the engine cool. The exhaust manifold was glowing orange.
I have listed below my final settings.They are non linear, please let me know if they are close to what you guys have come up with for the FD with stock CAS.
0 66.9
1000 63.0
2000 61.1
3000 59.1
4000 57.4
5000 57.0
6000 55.2
7000 54.8
8000 54.8
9000 56.0
10000 70
11000 70
12000 70
13000 70
14000 70
I have listed below my final settings.They are non linear, please let me know if they are close to what you guys have come up with for the FD with stock CAS.
0 66.9
1000 63.0
2000 61.1
3000 59.1
4000 57.4
5000 57.0
6000 55.2
7000 54.8
8000 54.8
9000 56.0
10000 70
11000 70
12000 70
13000 70
14000 70
#13
Please explain 4 - 5*. Do you mean 4 - 5 degees difference at each rpm point or the setting should be at 4 or 5 at each rpm point. My highest setting is 66.9 at 0rpm and lowest 54.8 @ 8000 rpm, which is a difference of 12. Is this what you are referring to?
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CaptainKRM
2nd Generation Specific (1986-1992)
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08-26-15 09:52 PM