Engine/Transmission (1998.5 - 2002) Adding timing to HO engine

[Jdonoghue]

Would there be any benefit to adding timing to my '01? Or would I just get more noise and a possibly leaky head gasket after a while?



The only mods on my truck are intake and exhaust.

 

[Partyat33]

I don't recommend adding timing on an HO. Makes a lot of noise and that can't be good.

 

[AllianceDiesel]

adding timing will get you better mileage, the best way is to get a chip that advances timing, no it won't hurt your engine any way, theres thousands of trucks running advanced timing with no problems

 

[blacksheepdiesel]

Have been running the Smarty software #1 on my truck for 2 years and 150,000 miles, over half of those pulling campers, sometimes quite heavy ones (25,000 on the scale for truck and trailer). The Smarty instructions say to not run it on #1 while loaded heavy but I have seen no side effects other than better fuel mileage and power. Last fall I replaced the head gasket which had been leaking under the t-stat for a long time and saw no damage to internal parts including head gasket. Don't know how much timing is added on #1 but it works on my '01 HO.

Godspeed,
Trent

 

[johncameron]

I run my HO on SW1 empty and tow on SW3. It does make a bit more noise than stock software but after a few days it sounds normal.



I also have 100HP sticks which makes more timing under light load too.

 

[GOT-Torque]

with stock injectors, yes timing will help mileage and power.



Can you load a smarty on SW#1 onto your truck or hook up a edge box and then look at the data tables to determine how much the timing was changed? That would give you an idea how much timing those devices add...

 

[Jdonoghue]

with stock injectors, yes timing will help mileage and power.



Can you load a smarty on SW#1 onto your truck or hook up a edge box and then look at the data tables to determine how much the timing was changed? That would give you an idea how much timing those devices add...

I'd need to get a CAN bus sniffer. Then yes, I could see how much they add.



Jim

 

[6naline01]

Greetings, does a edge EZ advance the timing?,I have a 01 HO. TIA 6naline01

 

[timbo]

The only mods on my truck are intake and exhaust. [/QUOTE]



Ain't you forgetting some ECM tweaking!!:-laf

 

[johncameron]

Greetings, does a edge EZ advance the timing?,I have a 01 HO. TIA 6naline01

Yes, actually timing only!

 

[Cummins724]

There has been alot of threads about timing on HO engines over the past couple years. I can't remember who posted that they were running a 02 HO with a Drag comp on 5x5 & Smarty sw9 on the dyno for best numbers, but I remember reading it. I personally wouldn't have gone that route, but I guess it works.

 

[GOT-Torque]

Some trucks have more timing that others from the factory. Personnally, I think it was due to the tolerance in how the factory mounted the tone ring on the backside of the cam gear. Also due to variations in the pumps as well.



I know that everyones combonation is different but for mine, I was using a hotrod pump, drag comp, big injectors, and smarty on #4. It had plenty of timing, if the temp dropped much I would pull out some more timing by fooling the IAT sensor.



When I dyno'd at Floor-It, Marco himself was there. Out of curiousity on a couple runs with the smarty only on #9, he then tweaked the smarty to add more timing that normal and we saw power drop. Kind of confirmed that for my truck, in that setup, I had all the timing I could benefit from...

 

[jkidd]

the EZ adds timing only in the low setting. Levels 2 and 3 add some fuel through the canbus

 

[AFoulk]

I'm running a edge ez and 275 injectors, but I have a SO pump on mine. I don't know if running a SO pump with a HO ecu changes timing at all, but it seems just as noisy as when the truck was still stock. It still makes more noise than a SO engine.

 

[Jdonoghue]

I'm running a edge ez and 275 injectors, but I have a SO pump on mine. I don't know if running a SO pump with a HO ecu changes timing at all, but it seems just as noisy as when the truck was still stock. It still makes more noise than a SO engine.

I don't think the pump makes a difference in timing. From what I can gather, the 'message' sent to the pump that commands timing follows the SAE standard. So, if the ECU tells it that it wants 15*, the pump does 15*.

 

[AllianceDiesel]

ya, all the so pump does is put out more fuel if i remember right

 

[darkhorse]

ya, all the so pump does is put out more fuel if i remember right

The SO pump has larger cylinders in it so it can deliver more fuel potentially but it put it out at lower pressure. I think I got that right.

 

[AllianceDiesel]

well all i know is that it makes a hell of a difference when put on a ho engine

 

[AFoulk]

actually I lost a lot of bottom end when I switched to the SO pump, but now that I have the 275's and the EZ, I gained it back and have more top end to boot. I made the swap though cause my old VP was going out, and I have plans for over 500hp someday.



Darkhorse, your exactly right, its got bigger plungers than a HO, so it pushes more fuel, but it does so at a lower pressure, so i've been told anyways. I just wasn't sure if the module on the pump itself controlled timing or if the engine ecu did.



So in other words, the module on the inj. pump is basically just a "middle man", right? It makes the pump do what the engine ecu tells it too.

 

[KLockliear]

the EZ adds timing only in the low setting. Levels 2 and 3 add some fuel through the canbus

Actually, the Edge EZ adds fuel in all levels. Only the Diesel Dynamics True Torque Power Module version had a "timing only" setting.