timing bump
how many degrees does the 1/8 timing bump set you at 14.5 or 15? thanks alot!!!!!!
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Sat down and figured this out one day. And with a little help from some friends, got the numbers fine tuned.
Cummins engine VE pump timing: (unverified) 1.25mm pump lift = 12.5° stock intercooled (1.4mm stock non intercooled) 2.4mm additional pump lift (advance) = 21° - 22° M&H timing spacer increases to 6.4mm advance = 31° - 32° 1mm pump rotation = 1° timing (verified) 1 tooth on drive gear = 5° timing (verified) 1/8" bump is 4° - 5° Hope this helps |
so is it safe to say after 12.5 stock the 1/8 gets u around 14? thanks for taking the time to verify this. what is the M2 timing spacer?
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1/8" bump puts you at a 16ish-17ish base timing.
The M2 is a fuel pin. The M&H Dynamic timing device (timing spacer) allows for more total advance. 12.5° to 32°, instead of the stock 12.5° to 22°. |
So by looking at your math that would put a non-intercooled engine at around 13°? Correct?
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so if the 1/8 puts you around 16 17ish are we risking a head gasket?
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Originally Posted by 901stgen
(Post 754286)
So by looking at your math that would put a non-intercooled engine at around 13°? Correct?
Originally Posted by lodal cummins
(Post 754313)
so if the 1/8 puts you around 16 17ish are we risking a head gasket?
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Where's a mod? This needs to be a sticky...... :w2:
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Originally Posted by cougar
(Post 753836)
Sat down and figured this out one day. And with a little help from some friends, got the numbers fine tuned.
Cummins engine VE pump timing: (unverified) 1.25mm pump lift = 12.5° stock intercooled (1.4mm stock non intercooled) 2.4mm additional pump lift (advance) = 21° - 22° M&H timing spacer increases to 6.4mm advance = 31° - 32° 1mm pump rotation = 1° timing (verified) 1 tooth on drive gear = 5° timing (verified) 1/8" bump is 4° - 5° Hope this helps I've got my mess advanced two teeth, with the pump set just a hair past the stock marks. Plus the M&H spacer. :s: Still tweaking it though. |
Originally Posted by BC847
(Post 754569)
Crap!
I've got my mess advanced two teeth, with the pump set just a hair past the stock marks. Plus the M&H spacer. :s: Still tweaking it though. |
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