Timing versus HP comparison. - Competition Diesel.Com

RonA · 04-10-2011, 12:03 PM

Just an observation from yesterday with a temp of about 73 deg. versus a couple of runs a while back on the same dyno with a temperature of about 66 deg. nearly the same humidity.
Comparing runs at 22.25 deg of timing to runs at 26 deg of timing, the power level was up on the higher timing in the following manner.(gov springs were also tightened 2 additional clicks).

start at 80mph(rpm numbers are approx).

2100rpm-equal
2250- +35hp
2385- +125hp
2500- +150hp
2650- +200hp
2780- +225hp
2915- +200hp
3050- +100hp
3180- even

Your results will vary, but it gives an idea of the change in power under the curve from the timing change.

Another thank you to Chris and Jeremy at Jefferson State Diesel for all their help.
RonA

*JQmile* · 04-10-2011, 12:05 PM

Time to try 30

*Smokem* · 04-10-2011, 12:20 PM

I thought spraying in the bowl didn't make any power?

kleann · 04-10-2011, 12:34 PM

Is this on your new build Ron?

RonA · 04-10-2011, 12:40 PM

Quote:

Originally Posted by kleann

Is this on your new build Ron?

No. Same old 5.9 for an apples to apples comparison.
On a side note, and not trying to stir up anything, with the exception of one run(which could be just a fluke), the F1 Mach 7's at 2.9 lpm made about the same overall power as the Exergy nozzles at 4.25 lpm. The runs were alot cleaner yesterday with the higher timing suggesting that I may need larger injectors, or that my 13mm pump may be in need of some freshening up. I have a set of 4.85 lpm nozzles and a set of 5.25 lpm nozzles here to try.

dvst8r · 04-10-2011, 01:20 PM

Hmmm, that additional timing must be putting you awfully close to 4 digit power.

bsmith · 04-10-2011, 10:01 PM

Quote:

Originally Posted by RonA

No. Same old 5.9 for an apples to apples comparison.
On a side note, and not trying to stir up anything, with the exception of one run(which could be just a fluke), the F1 Mach 7's at 2.9 lpm made about the same overall power as the Exergy nozzles at 4.25 lpm. The runs were alot cleaner yesterday with the higher timing suggesting that I may need larger injectors, or that my 13mm pump may be in need of some freshening up. I have a set of 4.85 lpm nozzles and a set of 5.25 lpm nozzles here to try.

Thought you weren't gonna share those.

madmikeismad · 04-10-2011, 10:12 PM

Wow, I had no idea timing helped that much.

If I'm reading that right, 4* gained 225hp at 2780rpm?

CL2000 · 04-10-2011, 10:13 PM

So I guess I dont have to help now...... Did you make that number you wanted?

npe3484 · 04-10-2011, 10:36 PM

What prompted the need (or want) for the additional governor spring clicks?

madmikeismad · 04-10-2011, 10:58 PM

I guess because higher timing adds more power in the top end, so tighten the springs for a little more rpm?

NickTF · 04-11-2011, 11:55 AM

Keeping my eye on this one! Ron, I want to ask the obvious question as everyone words things differently. The additional power was made with the higher timing right?

gwhammy · 04-11-2011, 12:56 PM

(What prompted the need (or want) for the additional governor spring clicks?)

You ask Ron for a reason for changing something? Come on! Have you noticed nothing stays the same on his truck very long. That is some interesting info, I wonder if numbers climb like this on a stock pump.

bsmith · 04-11-2011, 01:33 PM

Quote:

Originally Posted by NickTF

Keeping my eye on this one! Ron, I want to ask the obvious question as everyone words things differently. The additional power was made with the higher timing right?

Correct.

RonA · 04-11-2011, 02:15 PM

Keep in mind that 22.5deg and 26 degs both started at the same hp level and ended up at the same hp level. There was no peak gain, but there was an increase in torque and hp throughout the rest of the run.

RonA · 04-26-2011, 08:27 AM

I keep looking at these graphs and i still don't understand why the power fell off earlier with higher timing and the 2 extra clicks of the governor springs.

*GOT-Torque* · 04-26-2011, 09:43 AM

I think you used up your available rail pressure too soon.

(edit) based on the graph, are you sure the gov springs were tightened and not loosened? (just asking the obvious question based upon the graph)

RonA · 04-26-2011, 10:17 AM

Maybe i got it mixed up. What's the old saying, goosey loosey, tightie whitey. Lefty righty doggie bitey. I'll check the protrusion with a pair of calipers.

*Smokem* · 04-26-2011, 10:37 AM

Try this; two runs initial +1 and 26°, two runs initial +3 and 22°, then you will know what caused what.

Lanky · 04-26-2011, 11:50 AM

Good info! Thanks...

04-10-2011, 12:03 PM	#1
RonA Name: RonA Title: Too Much Time Status: Not Here Join Date: Feb 2008 Location: Liberal ground zero. Member`s Gallery Posts: 11,058	Timing versus HP comparison. Just an observation from yesterday with a temp of about 73 deg. versus a couple of runs a while back on the same dyno with a temperature of about 66 deg. nearly the same humidity. Comparing runs at 22.25 deg of timing to runs at 26 deg of timing, the power level was up on the higher timing in the following manner.(gov springs were also tightened 2 additional clicks). start at 80mph(rpm numbers are approx). 2100rpm-equal 2250- +35hp 2385- +125hp 2500- +150hp 2650- +200hp 2780- +225hp 2915- +200hp 3050- +100hp 3180- even Your results will vary, but it gives an idea of the change in power under the curve from the timing change. Another thank you to Chris and Jeremy at Jefferson State Diesel for all their help. RonA __________________ 55 years of work and all I got was a T-shirt. Last edited by RonA; 04-10-2011 at 12:16 PM.

04-10-2011, 12:05 PM	#2
JQmile Name: JQmile Title: Comp Diesel Sponsor Status: Not Here Join Date: Nov 2006 Member`s Gallery Posts: 6,976	Time to try 30 __________________ 89 Dodge 972rwhp on the hose, still a VE!

04-10-2011, 12:20 PM	#3
Smokem Name: Smokem Title: Turbler Status: Not Here Join Date: May 2006 Location: Iowa Member`s Gallery Posts: 5,565	I thought spraying in the bowl didn't make any power? __________________ Infinite Performance

04-10-2011, 10:12 PM	#8
madmikeismad Name: madmikeismad Title: So mad Status: Not Here Join Date: Dec 2009 Location: Newalla, OK Member`s Gallery Posts: 14,347	Wow, I had no idea timing helped that much. If I'm reading that right, 4* gained 225hp at 2780rpm? __________________ Mike Hill

04-10-2011, 10:13 PM	#9
CL2000 Name: CL2000 Title: Too Much Time Status: Not Here Join Date: Apr 2007 Location: Martinez,CA Member`s Gallery Posts: 1,740	So I guess I dont have to help now...... Did you make that number you wanted? __________________ 00 QCLB 4x4 887 pump tunned by Brett@LCD & I,CR head,Fletcher Cam Suncoast & MJ tool trans parts,66/74 752+ 11.65@113.57 RCP Diesel, Wright Machine leftcoastdiesel.com - WELCOME Tork Teknology

04-10-2011, 12:34 PM	#4
kleann Name: kleann Title: VP44 pwr Status: Not Here Join Date: Aug 2008 Location: Down yonder Member`s Gallery Posts: 4,388	Is this on your new build Ron?

04-10-2011, 10:36 PM	#10
npe3484 Name: npe3484 Title: I hate ATF Status: Not Here Join Date: May 2009 Location: Suffolk, VA Member`s Gallery Posts: 792	What prompted the need (or want) for the additional governor spring clicks? __________________ `03 4x4 QCSB - 8" on 37's, Engine and 48RE built by TRE Diesel, TaterBuilt 67/67, FirePunk tuning, 50hp Bosch injectors

04-10-2011, 10:58 PM	#11
madmikeismad Name: madmikeismad Title: So mad Status: Not Here Join Date: Dec 2009 Location: Newalla, OK Member`s Gallery Posts: 14,347	I guess because higher timing adds more power in the top end, so tighten the springs for a little more rpm? __________________ Mike Hill

04-11-2011, 11:55 AM	#12
NickTF Name: NickTF Title: Single turbo turd. Status: Not Here Join Date: Jun 2007 Location: Laurel, DE Member`s Gallery Posts: 5,887	Keeping my eye on this one! Ron, I want to ask the obvious question as everyone words things differently. The additional power was made with the higher timing right? __________________ 97 12v sold. 2015 Power Wagon DD!

04-11-2011, 12:56 PM	#13
gwhammy Name: gwhammy Title: Too Much Time Status: Not Here Join Date: Sep 2006 Location: Missouri Member`s Gallery Posts: 2,201	(What prompted the need (or want) for the additional governor spring clicks?) You ask Ron for a reason for changing something? Come on! Have you noticed nothing stays the same on his truck very long. That is some interesting info, I wonder if numbers climb like this on a stock pump. __________________ 95,twd,rc,sb,351-ht60 twins,160modded, 09 f350 12 valve, Last edited by gwhammy; 04-11-2011 at 01:02 PM.

04-11-2011, 02:15 PM	#15
RonA Name: RonA Title: Too Much Time Status: Not Here Join Date: Feb 2008 Location: Liberal ground zero. Member`s Gallery Posts: 11,058	Keep in mind that 22.5deg and 26 degs both started at the same hp level and ended up at the same hp level. There was no peak gain, but there was an increase in torque and hp throughout the rest of the run. __________________ 55 years of work and all I got was a T-shirt.

04-26-2011, 09:43 AM	#17
GOT-Torque Name: GOT-Torque Title: is Status: Not Here Join Date: Jul 2007 Location: Falls City, NE Member`s Gallery Posts: 5,284	I think you used up your available rail pressure too soon. (edit) based on the graph, are you sure the gov springs were tightened and not loosened? (just asking the obvious question based upon the graph) __________________ "Enjoy the little things in life, because one day you will look back, and realize they were the big things" EATSOOT.com Last edited by GOT-Torque; 04-26-2011 at 09:50 AM.

04-26-2011, 10:17 AM	#18
RonA Name: RonA Title: Too Much Time Status: Not Here Join Date: Feb 2008 Location: Liberal ground zero. Member`s Gallery Posts: 11,058	Maybe i got it mixed up. What's the old saying, goosey loosey, tightie whitey. Lefty righty doggie bitey. I'll check the protrusion with a pair of calipers. __________________ 55 years of work and all I got was a T-shirt.

04-26-2011, 10:37 AM	#19
Smokem Name: Smokem Title: Turbler Status: Not Here Join Date: May 2006 Location: Iowa Member`s Gallery Posts: 5,565	Try this; two runs initial +1 and 26°, two runs initial +3 and 22°, then you will know what caused what. __________________ Infinite Performance

04-26-2011, 11:50 AM	#20
Lanky Name: Lanky Title: Too Much Time Status: Not Here Join Date: Nov 2009 Location: Pa Member`s Gallery Posts: 596	Good info! Thanks...