P7100 timing question

[SYeardley]

Hi guys, thanks in advance for this, I want to advance my timing a couple of degrees but Im not sure what stock timing is so not sure how far to go. Can anyone tell me the stock timing for a specific engine serial number, I know the data plate should have the info but it's missing but I do have the correct serial number. I have tried calling Cummins but they tell me they can't give out this information incase they tell me something wrong and my engine blows to the moon. Here is the info I have already, ESN 21211715 , CPL 1577 , p7100 part number 3282462. I just need to know stock timing on this pump so I can calculate how much to add to it to get to around 15 degrees.

Thanks

 

[GAmes]

With a CPL of 1577 it's hard to say since it apparently isn't a Dodge.
http://dodgeram.org/tech/dsl/Facts/Cpl.htm
It doesn't matter what stock timing is if you want to set it at 15, just do it. There are at least three ways to set the timing, all of them beat to death on the forums. You can start here. http://www.competitiondiesel.com/forums/showthread.php?t=204310 Not knowing the specifics of your pump I'd go with a degree wheel.

 

[SYeardley]

With a CPL of 1577 it's hard to say since it apparently isn't a Dodge.
http://dodgeram.org/tech/dsl/Facts/Cpl.htm
It doesn't matter what stock timing is if you want to set it at 15, just do it. There are at least three ways to set the timing, all of them beat to death on the forums. You can start here. http://www.competitiondiesel.com/forums/showthread.php?t=204310 Not knowing the specifics of your pump I'd go with a degree wheel.

Thanks very much for your reply, no its not a dodge application, the engine is from a medium duty ERF es6 truck (I'm in the U.K), I checked the timing before removing the pump, I went with dropping a valve to find tdc and then rolling it over to get the pump pin to slide in nice n easy, looking at the degree wheel it was out by 1 degree, so I was 1 degree more advanced and it ran good, I could just put the pump back on the same way but I'd really like to know where I'm at as I've seen stock timing on these pumps down to 11 degrees according to the data plates. I'd really like to stick with the pin pump and roll engine over to add desired degrees method. I feel it should be pretty accurate once I find what the stock timing was set at in the pump.

 

[GAmes]

Your easiest route is a timing light. This one costs less than my dial indicator set did. Amazon product ASIN B002PCTG4M

 

[SYeardley]

Your easiest route is a timing light. This one costs less than my dial indicator set did. Amazon product ASIN B002PCTG4M

Hi, I think I got lucky with this, I've been looking around at a few engine data plates to try and match the cpl. Lucky for me I found one with the exact same cpl, pump part number, power output and everything. It's the same year and apart from actual ESN everything else is perfect match according to Cummins quickserve. On the plate it states timing is set to 13 degrees so I'm going to go with that as base mark and add accordingly using the degree wheel. I'm probably going to shoot for 15 degrees. My truck is a 91 suburban, zf5 manual trans with 0.76 5th and 3.54 axle gears turning 35 inch tyres. It's my daily driver go anywhere and do everything rig. I've just fitted new genuine cam and tappets, p-pump has 100 plate 3k GSK and modified AFC for more travel and control with longer spring. I'm just about to set up a new set of 5x10 injectors to around 280 bar, turbo is low mile stock Wh1c and gated to max 30-32 psi. In your opinion is 15 degrees about right for my setup? I know you are very respected on this forum and I remember reading posts years ago with content from you, i would love to hear your opinion on this for me.
Thanks

 

[SYeardley]

Hi, I think I got lucky with this, I've been looking around at a few engine data plates to try and match the cpl. Lucky for me I found one with the exact same cpl, pump part number, power output and everything. It's the same year and apart from actual ESN everything else is perfect match according to Cummins quickserve. On the plate it states timing is set to 13 degrees so I'm going to go with that as base mark and add accordingly using the degree wheel. I'm probably going to shoot for 15 degrees. My truck is a 91 suburban, zf5 manual trans with 0.76 5th and 3.54 axle gears turning 35 inch tyres. It's my daily driver go anywhere and do everything rig. I've just fitted new genuine cam and tappets, p-pump has 100 plate 3k GSK and modified AFC for more travel and control with longer spring. I'm just about to set up a new set of 5x10 injectors to around 280 bar, turbo is low mile stock Wh1c and gated to max 30-32 psi. In your opinion is 15 degrees about right for my setup? I know you are very respected on this forum and I remember reading posts years ago with content from you, i would love to hear your opinion on this for me.
Thanks

 

[GAmes]

5 X 10s are pretty small. Since you have a 100 plate I think 5 X 12s would be a better choice. But since you have them you can make the choice to go bigger any time. Timing, IMO, is engine driven. IOW, no one size fits all. My first foray into timing advances put me at 16. I hated it, too much lag for towing considering everything else was stock except my #11 plate. I experimented and finally settled on 15. What I'm saying is 15 is as good a place as any, but after driving it a bit you might go up or down and see how your engine responds at other settings.

 

[SYeardley]

Yeah 5x10 are only sat here be because I was offered them at a good price and they fitted my plan at the time, I paid £150 for 6 brand new genuine Bosch about 2 years ago. I never got around to fitting them and now plans have changed a little. I have all the shims needed and a pop tester so I'll get on with them and see how they run, I'm pretty certain a set of 5x12s will be finding there way to me in the future. I'm happy that you agree on the initial 15 degrees, I'm not really after a rocket ship or drag racer, I'm just after a solid reliable amount of power that can be used every day on the street. Thanks very much for taking the to me to advise me.

Cheers

Scott