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Old 11-28-2009, 09:09 PM   #41
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i did 464/792 then ran a 12.7 at 108 shortly after
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Old 11-28-2009, 09:15 PM   #42
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Quote:
Originally Posted by 01CumminsSport View Post
i did 464/792 then ran a 12.7 at 108 shortly after
#'s seem low for the ET.
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Old 11-28-2009, 09:20 PM   #43
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there really low i was doing 150hp more last month on 2 different dynos, but that was with a silver bullet and now with the s472 i cant get it to lite or make full boost on the dyno so an adjustable timing gear will help alot,
And i have 6 time slips for the day that are all with in .20 sec and 3 mph
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Old 11-28-2009, 09:23 PM   #44
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whens the next time you will run it?
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Old 11-28-2009, 09:25 PM   #45
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Quote:
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whens the next time you will run it?
after the new cam head and pump are on, so most likely next year unless i head down south do a strip thats open during the winter
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Old 11-29-2009, 11:17 AM   #46
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Someone posted a timing map they found for the VP44 once on TDR and as I recall it started at 8 degrees and topped out at 25.
 
Old 11-29-2009, 11:27 AM   #47
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if i remember right, it gets to over 30* with a box on it.
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Old 11-29-2009, 01:33 PM   #48
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I was told that unplugging the IAT sensor will give you more timing than a programmer/box will.
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Old 11-29-2009, 02:02 PM   #49
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when you unplug it reads -40* so the truck thinks its really cold out, but i dont think the timing would be advanced unless they thought raising the timing would raise cyl temps for cold weather running
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Old 11-29-2009, 02:16 PM   #50
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You can use the offset keys for either the cam gear or pump gear, ~ 24-25° is the limit with an unmodified piston/case.
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Old 11-29-2009, 03:31 PM   #51
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Quote:
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when you unplug it reads -40* so the truck thinks its really cold out, but i dont think the timing would be advanced unless they thought raising the timing would raise cyl temps for cold weather running
The person I heard it from was pretty sure the timing was advanced. It showed a small increase in power on the dyno.
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Old 11-29-2009, 03:41 PM   #52
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Advancing the timing will increase cylinder temps and decrease EGT's to a point. Fuel is being injected earlier in the stroke so it's burning longer inside the cylinder.
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Old 11-29-2009, 04:30 PM   #53
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ill try the IAT thing in a few when im back on the rollers. i know on a gasser it ritchens it up when you unplug the ECT or IAT wonder if its the same in a diesel
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Old 11-29-2009, 04:38 PM   #54
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Mine would always kick into high idle with the iat unplugged.
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Old 11-29-2009, 04:49 PM   #55
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Quote:
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Mine would always kick into high idle with the iat unplugged.
i take it you have a smarty then, ya its reading 40 below so it would go into high idle
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Old 11-29-2009, 04:49 PM   #56
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anybody ever thought of an adjustable pump gear for the vp44
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Old 11-29-2009, 05:08 PM   #57
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I have had my IAT unplugged for quite some time. It only goes to 3 cyl high idle when it's cold outside. When it was warm, it never went to high idle with the IAT unplugged.
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Old 11-29-2009, 05:21 PM   #58
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Quote:
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anybody ever thought of an adjustable pump gear for the vp44
I like that thought. Hopefully soon we'll see if it would be worth it.

Smokem- You say without modified piston or case, 24-25 is max.
What do you mean by case?
Sean
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Old 11-29-2009, 05:39 PM   #59
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Smokem- You say without modified piston or case, 24-25 is max.
What do you mean by case?
Sean
im guessing he means pump case, how the timing plunger only has so much space to move in there
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06 ccsb laramie, Smarty, AFE, CCDP exhaust
 
Old 11-29-2009, 06:10 PM   #60
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are the cam and VP gears the same size and bore?
DODGE CUMMINS 5.9 BILLET ADJUSTABLE (ADJ) CAM GEAR :eBay Motors (item 150303558832 end time Dec-07-09 08:57:42 PST)
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