What should I bump timing to with DDP4s? - Competition Diesel.Com

tony597fitter · 12-09-2007, 09:50 PM

Just put the DDP4s in and man they are everything everyone has talked about. My wife even asked me today if the truck was running because she couldnt see any idle haze

.

Now, I am going to do another retorque next weekend, and am going to do the timing. What should I time it to with the DDP4s?

Muddin_dude06 · 12-09-2007, 09:57 PM

Do you have O-ring or Firerings? Studs? I'd say 17* or 18* is a pretty good figure...

stacerbob · 12-09-2007, 10:04 PM

yeah 17-18 would be good

B18B1LS1 · 12-09-2007, 10:04 PM

I'm at 19* with mine, so far so good....

tony597fitter · 12-09-2007, 10:11 PM

Yeah, studs&orings and the rest of the goodies.

zstroken · 12-09-2007, 10:13 PM

What kind of RPM are you wanting to turn? I wouldn't be afraid of 21.

CPSimpson · 12-09-2007, 10:34 PM

Lenny has stated not to run over 20* on his injectors, but that also would vary with your headgasket thickness, right?

zstroken · 12-09-2007, 10:37 PM

Lenny told me not to go over 24. Perhaps he knew you were running them on the street. Yea head gasket thickness and how much was taken off of a head to clean it up.

*Bobcat698* · 12-09-2007, 11:43 PM

I was very happy with 20 degrees on the street with a properly tuned AFC.

Scooter's Roofing · 12-09-2007, 11:54 PM

18-20

*BluegrassDiesel* · 12-10-2007, 12:53 AM

Im running mine at 25*. They seem to be doing just great. Power comes on a little higher in the rpms though. If its your daily driver I'd say set it at 18*

Trapper · 12-10-2007, 07:01 AM

20* here runs great on the street with 1/2 cut DVs.

B18B1LS1 · 12-10-2007, 03:54 PM

What about a sled pulling/drag racing truck? Where is the best hp with these sticks going to be achieved? Stock compression, head and cam. Assume the truck has fire-rings, studs, and lots of air if need be.

SMOKIN93 · 12-10-2007, 09:01 PM

Good question, I am wondering the same thing.

Quote:

Originally Posted by B18B1LS1

What about a sled pulling/drag racing truck? Where is the best hp with these sticks going to be achieved? Stock compression, head and cam. Assume the truck has fire-rings, studs, and lots of air if need be.

Muddin_dude06 · 12-10-2007, 11:01 PM

I think that would depend on the piston and how big its bowl is, if Lenny says don't go over 19* he probably means because with stock pistons the spray will start comming over the edge of the bowl. Add marine pistons or Mahle pistons with larger bowls and you could run more timing...

Tcolesanti · 12-10-2007, 11:55 PM

I just did one at 19* on a buddies street truck with an auto and a 66mm charger before I left CA and it ran great.

-Tom

12-09-2007, 09:50 PM	#1
tony597fitter Name: tony597fitter Title: Tax Payer Status: Not Here Join Date: Dec 2006 Location: Plainfield, IL. Member`s Gallery Posts: 2,125	What should I bump timing to with DDP4s? Just put the DDP4s in and man they are everything everyone has talked about. My wife even asked me today if the truck was running because she couldnt see any idle haze . Now, I am going to do another retorque next weekend, and am going to do the timing. What should I time it to with the DDP4s? __________________ Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic. Proud to be a UNION Pipe Fitter Local 597 Chicago.

12-09-2007, 09:57 PM	#2
Muddin_dude06 Name: Muddin_dude06 Title: ... Status: Not Here Join Date: Sep 2007 Location: Chandler OK Member`s Gallery Posts: 2,541	Do you have O-ring or Firerings? Studs? I'd say 17* or 18* is a pretty good figure... __________________ '96 2500 4x4 5sp. 3” Full Long arm lift w/35's ValAir DD Clutch w/ Input DFI 5x.012’s, O-ringed, 625’s Hamilton 178/208, pushrods, PDD street springs, S362sxe/.7WG ‘12 LML crew cab swb 4x4 RC 3.5” lift with 33’s Anarchy tune 5” exhaust w/ Jones 5050XL

12-09-2007, 10:04 PM	#3
stacerbob Name: stacerbob Title: Rookie Status: Not Here Join Date: Sep 2007 Location: NE ARKANSAS Member`s Gallery Posts: 27	yeah 17-18 would be good __________________ 2003 DODGE RAM 3500 2WD 6 SPEED with Some Stuff 2000 Excursion Limited DP TUNER F5 35's 1970 FORD F-250 12 Valve CUMMINS

12-09-2007, 10:04 PM	#4
B18B1LS1 Name: B18B1LS1 Title: Too Much Time Status: Not Here Join Date: Aug 2006 Location: L-ville, Ga Member`s Gallery Posts: 1,429	I'm at 19* with mine, so far so good.... __________________ '97 2500 ECLB 4x4 -- couple of turbos mixed with some random billet stuff and still slow '03 2500 QCLB 4x4 -- work truck '98 Camaro Z28 -- s475 and 10.50@130 so far... '92 Wrangler -- lifted locked and stretched

12-09-2007, 10:11 PM	#5
tony597fitter Name: tony597fitter Title: Tax Payer Status: Not Here Join Date: Dec 2006 Location: Plainfield, IL. Member`s Gallery Posts: 2,125	Yeah, studs&orings and the rest of the goodies. __________________ Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic. Proud to be a UNION Pipe Fitter Local 597 Chicago.

12-09-2007, 10:13 PM	#6
zstroken Name: zstroken Title: For $$$ your name here Status: Not Here Join Date: Sep 2006 Location: Western Michigan(by the lake) Member`s Gallery Posts: 23,151	What kind of RPM are you wanting to turn? I wouldn't be afraid of 21.

12-09-2007, 10:34 PM	#7
CPSimpson Name: CPSimpson Title: Too Much Time Status: Not Here Join Date: Sep 2006 Member`s Gallery Posts: 1,212	Lenny has stated not to run over 20* on his injectors, but that also would vary with your headgasket thickness, right?

12-09-2007, 10:37 PM	#8
zstroken Name: zstroken Title: For $$$ your name here Status: Not Here Join Date: Sep 2006 Location: Western Michigan(by the lake) Member`s Gallery Posts: 23,151	Lenny told me not to go over 24. Perhaps he knew you were running them on the street. Yea head gasket thickness and how much was taken off of a head to clean it up.

12-09-2007, 11:43 PM	#9
Bobcat698 Name: Bobcat698 Title: Pure Diesel Power Status: Not Here Join Date: Apr 2006 Location: Marshfield, WI Member`s Gallery Posts: 2,229	I was very happy with 20 degrees on the street with a properly tuned AFC. __________________ Pure Diesel Power 715-254-1833

12-09-2007, 11:54 PM	#10
Scooter's Roofing Name: Scooter's Roofing Title: Too Much Time Status: Not Here Join Date: Oct 2006 Member`s Gallery Posts: 17,007	18-20

12-10-2007, 12:53 AM	#11
BluegrassDiesel Name: BluegrassDiesel Title: UK2K! Status: Not Here Join Date: Apr 2007 Location: KENTUCKY Member`s Gallery Posts: 4,136	Im running mine at 25. They seem to be doing just great. Power comes on a little higher in the rpms though. If its your daily driver I'd say set it at 18 __________________ Josh Land Bluegrass Diesel Performance Lancaster, Ky SHOP ONLINE @ http://WWW.SHOPBLUEGRASS.COM 97 DodgePPL Limited Pro Stock "The Crippler" 09 3500 GMC CCDually 05 Silverado SS

12-10-2007, 07:01 AM	#12
Trapper Name: Trapper Title: Hater Status: Not Here Join Date: Aug 2006 Location: Arizona Member`s Gallery Posts: 2,878	20* here runs great on the street with 1/2 cut DVs. __________________ Work In Progress

12-10-2007, 03:54 PM	#13
B18B1LS1 Name: B18B1LS1 Title: Too Much Time Status: Not Here Join Date: Aug 2006 Location: L-ville, Ga Member`s Gallery Posts: 1,429	What about a sled pulling/drag racing truck? Where is the best hp with these sticks going to be achieved? Stock compression, head and cam. Assume the truck has fire-rings, studs, and lots of air if need be. __________________ '97 2500 ECLB 4x4 -- couple of turbos mixed with some random billet stuff and still slow '03 2500 QCLB 4x4 -- work truck '98 Camaro Z28 -- s475 and 10.50@130 so far... '92 Wrangler -- lifted locked and stretched

12-10-2007, 11:01 PM	#15
Muddin_dude06 Name: Muddin_dude06 Title: ... Status: Not Here Join Date: Sep 2007 Location: Chandler OK Member`s Gallery Posts: 2,541	I think that would depend on the piston and how big its bowl is, if Lenny says don't go over 19* he probably means because with stock pistons the spray will start comming over the edge of the bowl. Add marine pistons or Mahle pistons with larger bowls and you could run more timing... __________________ '96 2500 4x4 5sp. 3” Full Long arm lift w/35's ValAir DD Clutch w/ Input DFI 5x.012’s, O-ringed, 625’s Hamilton 178/208, pushrods, PDD street springs, S362sxe/.7WG ‘12 LML crew cab swb 4x4 RC 3.5” lift with 33’s Anarchy tune 5” exhaust w/ Jones 5050XL

12-10-2007, 11:55 PM	#16
Tcolesanti Name: Tcolesanti Title: ALL NIGHTER Status: Not Here Join Date: Apr 2006 Location: Simi Valley, CA Member`s Gallery Posts: 2,753	I just did one at 19* on a buddies street truck with an auto and a 66mm charger before I left CA and it ran great. -Tom __________________ 2000 Dodge 3.6 https://www.facebook.com/AllNighterMotorports