advancing the pump - Page 2

***AKturbo*** · 11-05-2009, 02:40 PM

oops sorry for the double post

__________________
89 W250. A727 w/ 3.07s, starwheel bottomed, smoke screw turned out, fuel screw 3/4 turn from runaway, Timed 3/16", DennyT stgII, 366 spring, 12cm exhaust housing, Amsoil air filter, muffler gone, Isspro pyro/boost. G-end TC, 62/71/14 S300, 4" DP to 5" to single 7" miter coming soon when funds allow.

66 Charger, 440 mag, carter 4 barrel, modified cam

90 model 12 valve power · 11-05-2009, 04:26 PM

How much power does bumping the timing to the head give you?

__________________
1990 non i/c 12 valve:

automatic,pump wicked tweaked, POD's, Custom Intake, Oil Presure Gauge

***AKturbo*** · 11-05-2009, 07:44 PM

I don't know hp numbers but from 40-80mph it was the best single "seat of the pants" mod I've done.

__________________
89 W250. A727 w/ 3.07s, starwheel bottomed, smoke screw turned out, fuel screw 3/4 turn from runaway, Timed 3/16", DennyT stgII, 366 spring, 12cm exhaust housing, Amsoil air filter, muffler gone, Isspro pyro/boost. G-end TC, 62/71/14 S300, 4" DP to 5" to single 7" miter coming soon when funds allow.

66 Charger, 440 mag, carter 4 barrel, modified cam

90 model 12 valve power · 11-05-2009, 08:32 PM

so estimate is probably around 60 or so hp?

__________________
1990 non i/c 12 valve:

automatic,pump wicked tweaked, POD's, Custom Intake, Oil Presure Gauge

***AKturbo*** · 11-05-2009, 08:38 PM

that seems like a lot because it does decrease lower rpm hp.. but I've never dyno'd or anything so I really don't know a heck of a lot on mods-hp ratio

__________________
89 W250. A727 w/ 3.07s, starwheel bottomed, smoke screw turned out, fuel screw 3/4 turn from runaway, Timed 3/16", DennyT stgII, 366 spring, 12cm exhaust housing, Amsoil air filter, muffler gone, Isspro pyro/boost. G-end TC, 62/71/14 S300, 4" DP to 5" to single 7" miter coming soon when funds allow.

66 Charger, 440 mag, carter 4 barrel, modified cam

dnelson · 11-05-2009, 09:58 PM

it's probably not gaining you 60 hp, just gives more snap to it and makes it feel like more.

__________________
92 3/4 ton 4x4 5 speed, ddp fuel pin, ddp4 sticks, fuel screw 1+, lp piston lift pump, 2nd gen IC, cooler tubes, S300, amsoil dry filter,ATS 3 piece manifold, custom exhaust, just another noisy diesel pickup

Pacer · 11-07-2009, 02:25 AM

it gives you more top end im told? but im not sure cuz i cant get it to move. maybe ill work on it tomorrow. goin to a dyno day sunday here in town

__________________
91 w250, 12cm housing and the pump tweaked a bit

mrmoparwl · 11-07-2009, 03:04 PM

I agree with ZSkibo all it takes is once then new pump!$$$$

__________________
92 D250 Club Cab LE, BD converter, BD pyro, BD boost, Issapro temp, 16cm turbine housing, 100hp injecters, fuel screw bottomed, (not sure about star wheel yet), new linkage ends, 200 litre extra fuel tank.....so far (POM's)

Pacer · 11-09-2009, 12:06 PM

so for you guys that are scared to hit your pump with a dead blow how do you advance your pump?

__________________
91 w250, 12cm housing and the pump tweaked a bit

rodneykolk · 11-12-2009, 02:19 AM

Well hers my lil story.. on my 91 this summer, while on holidays. i decided to advance my pump. I used a set of pliers from the head to a screw on the AFC to pull the pump over. advanced it about an 1/8th". not sure if the pump was previously advanced on the gear (if thats possible) but the pump was still a solid half inch away from the head. well anyways, the truck pulled pretty hard empty up hills, and my EGTS didn't climb nearly as quickly. i could still hit 1500 tho

well anyways, on my way home..empty by the way, after about 300 kms i pulled off to get off the highway. i noticed my truck wasn't running right. when i stopped, i definatly knew something was wrong. the truck was running so rough it wasn't even funny. sounded like an old gas tractor. well anyways, i had to go to a wedding that day, so i pulled up to the wedding, and the truck was smoking and running terrible. i still had to drive home another 100 km that night, and the truck had no power and the boost gauge would like shudder, unless i floored it, it would still build 30 psi of boost, with slightly less power. anyways, moral of the story, i pulled the head and what happened was the head gasket blew between #5 and #6. there was a solid 1 inch gap in the gasket, with pieces of the steel ring stuck in one of the valves. So basically, just be careful when advancing the pump. what i figured is that pump was advanced too much and the cylinder pressures were too high and thats what blew the gasket. just a warning

__________________
2001 Dodge 3500. Black sport fully loaded. 6 speed manual. 4X4. 40 hp ebay sticks!!

1991 UGLY flatdeck. 5 " stack. pump turned up, 5 speed. POS

but its great!

TaterSalad · 11-12-2009, 10:02 AM

good story, just gives more meaning to getting head studs and valve springs......

__________________

92 W250 club cab 5spd -Eagle Alloys with Discover 35's,4'' rancho lift,K/N filter,4'' silverline exhaust, SW down,2 1/2 turns FPS, SB CON O clutch, autometer boost and pyro,borgeson shaft, cobra 29 LTD NW.custom charger being built. injectors and more soon!

ZSkibo · 11-12-2009, 10:12 AM

To adjust pump timing without hitting the pump with a hammer (yikes!) I remove both sets of injector lines. I then loosen the retaining nuts and give the pump a twist by hand. If it's tight going to the head I can wiggle it back and forth and it'll usually go where I want it. If its really tight, I get out my barring tool and turn the motor over a bit and it always goes where I want it then. Again, do what you want with your truck but using a hammer to adjust your injection pump is like using a rock to clean bugs off your paint or something (best analogy I could come up with with only one cup of coffee in me). It's a $900 dollar piece of precision machinery not a trailer hitch.

__________________
92' W250, rhino liner bed+cab. Pump bombed: timing 18*, AFC out, #366 spring, POD's, #60 exh springs, 2ndGen piston pump (@18psi), BHAF, HX35/40 (60/60/12), 4" turbo back 6" stack, full gauges, Banks engine brake, onboard air, train horns!

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11-05-2009, 02:40 PM	#13 (permalink)
*AKturbo* Cummins Fanatic Join Date: Aug 2008 Location: Juneau, Alaska Posts: 145 Thanks: 0 Thanked 2 Times in 2 Posts AKturbo's Truck Pics	oops sorry for the double post __________________ 89 W250. A727 w/ 3.07s, starwheel bottomed, smoke screw turned out, fuel screw 3/4 turn from runaway, Timed 3/16", DennyT stgII, 366 spring, 12cm exhaust housing, Amsoil air filter, muffler gone, Isspro pyro/boost. G-end TC, 62/71/14 S300, 4" DP to 5" to single 7" miter coming soon when funds allow. 66 Charger, 440 mag, carter 4 barrel, modified cam

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11-05-2009, 04:26 PM	#14 (permalink)
90 model 12 valve power Cummins Enthusiast Join Date: Aug 2009 Location: Biscoe,North Carolina Posts: 249 Thanks: 0 Thanked 0 Times in 0 Posts 90 model 12 valve power's Truck Pics	How much power does bumping the timing to the head give you? __________________ 1990 non i/c 12 valve: automatic,pump wicked tweaked, POD's, Custom Intake, Oil Presure Gauge

11-05-2009, 07:44 PM	#15 (permalink)
*AKturbo* Cummins Fanatic Join Date: Aug 2008 Location: Juneau, Alaska Posts: 145 Thanks: 0 Thanked 2 Times in 2 Posts AKturbo's Truck Pics	I don't know hp numbers but from 40-80mph it was the best single "seat of the pants" mod I've done. __________________ 89 W250. A727 w/ 3.07s, starwheel bottomed, smoke screw turned out, fuel screw 3/4 turn from runaway, Timed 3/16", DennyT stgII, 366 spring, 12cm exhaust housing, Amsoil air filter, muffler gone, Isspro pyro/boost. G-end TC, 62/71/14 S300, 4" DP to 5" to single 7" miter coming soon when funds allow. 66 Charger, 440 mag, carter 4 barrel, modified cam

11-05-2009, 08:32 PM	#16 (permalink)
90 model 12 valve power Cummins Enthusiast Join Date: Aug 2009 Location: Biscoe,North Carolina Posts: 249 Thanks: 0 Thanked 0 Times in 0 Posts 90 model 12 valve power's Truck Pics	so estimate is probably around 60 or so hp? __________________ 1990 non i/c 12 valve: automatic,pump wicked tweaked, POD's, Custom Intake, Oil Presure Gauge

11-05-2009, 08:38 PM	#17 (permalink)
*AKturbo* Cummins Fanatic Join Date: Aug 2008 Location: Juneau, Alaska Posts: 145 Thanks: 0 Thanked 2 Times in 2 Posts AKturbo's Truck Pics	that seems like a lot because it does decrease lower rpm hp.. but I've never dyno'd or anything so I really don't know a heck of a lot on mods-hp ratio __________________ 89 W250. A727 w/ 3.07s, starwheel bottomed, smoke screw turned out, fuel screw 3/4 turn from runaway, Timed 3/16", DennyT stgII, 366 spring, 12cm exhaust housing, Amsoil air filter, muffler gone, Isspro pyro/boost. G-end TC, 62/71/14 S300, 4" DP to 5" to single 7" miter coming soon when funds allow. 66 Charger, 440 mag, carter 4 barrel, modified cam

11-05-2009, 09:58 PM	#18 (permalink)
dnelson Cummins Nut Join Date: Jan 2009 Location: Royal City, WA Posts: 487 Thanks: 0 Thanked 3 Times in 3 Posts dnelson's Truck Pics	it's probably not gaining you 60 hp, just gives more snap to it and makes it feel like more. __________________ 92 3/4 ton 4x4 5 speed, ddp fuel pin, ddp4 sticks, fuel screw 1+, lp piston lift pump, 2nd gen IC, cooler tubes, S300, amsoil dry filter,ATS 3 piece manifold, custom exhaust, just another noisy diesel pickup

11-07-2009, 02:25 AM	#19 (permalink)
Pacer Cummins Fan Join Date: Jan 2009 Location: Yuba City, CA Posts: 85 Thanks: 0 Thanked 0 Times in 0 Posts Pacer's Truck Pics	it gives you more top end im told? but im not sure cuz i cant get it to move. maybe ill work on it tomorrow. goin to a dyno day sunday here in town __________________ 91 w250, 12cm housing and the pump tweaked a bit

11-07-2009, 03:04 PM	#20 (permalink)
mrmoparwl Cummins Fanatic Join Date: Jul 2009 Location: Prince George BC Canada Posts: 100 Thanks: 5 Thanked 3 Times in 3 Posts mrmoparwl's Truck Pics	I agree with ZSkibo all it takes is once then new pump!$$$$ __________________ 92 D250 Club Cab LE, BD converter, BD pyro, BD boost, Issapro temp, 16cm turbine housing, 100hp injecters, fuel screw bottomed, (not sure about star wheel yet), new linkage ends, 200 litre extra fuel tank.....so far (POM's)

11-09-2009, 12:06 PM	#21 (permalink)
Pacer Cummins Fan Join Date: Jan 2009 Location: Yuba City, CA Posts: 85 Thanks: 0 Thanked 0 Times in 0 Posts Pacer's Truck Pics	so for you guys that are scared to hit your pump with a dead blow how do you advance your pump? __________________ 91 w250, 12cm housing and the pump tweaked a bit

11-12-2009, 02:19 AM	#22 (permalink)
rodneykolk Cummins Enthusiast Join Date: Jun 2007 Location: Delta BC canada Posts: 251 Thanks: 0 Thanked 1 Time in 1 Post rodneykolk's Truck Pics	Well hers my lil story.. on my 91 this summer, while on holidays. i decided to advance my pump. I used a set of pliers from the head to a screw on the AFC to pull the pump over. advanced it about an 1/8th". not sure if the pump was previously advanced on the gear (if thats possible) but the pump was still a solid half inch away from the head. well anyways, the truck pulled pretty hard empty up hills, and my EGTS didn't climb nearly as quickly. i could still hit 1500 tho well anyways, on my way home..empty by the way, after about 300 kms i pulled off to get off the highway. i noticed my truck wasn't running right. when i stopped, i definatly knew something was wrong. the truck was running so rough it wasn't even funny. sounded like an old gas tractor. well anyways, i had to go to a wedding that day, so i pulled up to the wedding, and the truck was smoking and running terrible. i still had to drive home another 100 km that night, and the truck had no power and the boost gauge would like shudder, unless i floored it, it would still build 30 psi of boost, with slightly less power. anyways, moral of the story, i pulled the head and what happened was the head gasket blew between #5 and #6. there was a solid 1 inch gap in the gasket, with pieces of the steel ring stuck in one of the valves. So basically, just be careful when advancing the pump. what i figured is that pump was advanced too much and the cylinder pressures were too high and thats what blew the gasket. just a warning __________________ 2001 Dodge 3500. Black sport fully loaded. 6 speed manual. 4X4. 40 hp ebay sticks!! 1991 UGLY flatdeck. 5 " stack. pump turned up, 5 speed. POS but its great!

11-12-2009, 10:02 AM	#23 (permalink)
TaterSalad Diesel Freak Join Date: Nov 2007 Location: Stronghurst,IL Posts: 800 Thanks: 4 Thanked 2 Times in 2 Posts TaterSalad's Truck Pics	good story, just gives more meaning to getting head studs and valve springs...... __________________ 92 W250 club cab 5spd -Eagle Alloys with Discover 35's,4'' rancho lift,K/N filter,4'' silverline exhaust, SW down,2 1/2 turns FPS, SB CON O clutch, autometer boost and pyro,borgeson shaft, cobra 29 LTD NW.custom charger being built. injectors and more soon!

11-12-2009, 10:12 AM	#24 (permalink)
ZSkibo Cummins Nut Join Date: Aug 2008 Location: Unionville, PA Posts: 325 Thanks: 3 Thanked 15 Times in 14 Posts ZSkibo's Truck Pics	To adjust pump timing without hitting the pump with a hammer (yikes!) I remove both sets of injector lines. I then loosen the retaining nuts and give the pump a twist by hand. If it's tight going to the head I can wiggle it back and forth and it'll usually go where I want it. If its really tight, I get out my barring tool and turn the motor over a bit and it always goes where I want it then. Again, do what you want with your truck but using a hammer to adjust your injection pump is like using a rock to clean bugs off your paint or something (best analogy I could come up with with only one cup of coffee in me). It's a $900 dollar piece of precision machinery not a trailer hitch. __________________ 92' W250, rhino liner bed+cab. Pump bombed: timing 18*, AFC out, #366 spring, POD's, #60 exh springs, 2ndGen piston pump (@18psi), BHAF, HX35/40 (60/60/12), 4" turbo back 6" stack, full gauges, Banks engine brake, onboard air, train horns!