17* hpop questions - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 31 (permalink) Old 10-30-2007, 06:26 PM Thread Starter
 
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17* hpop questions

I have a early 99 which if i understand has the same pump as the OBS trucks, what i was wondering is if it is worth upgrading to the 17*? I'm sure the HPOP is the reason my truck wont run the TS chip very good on the higher settings, i want to do big oil but $2000 is alittle out of my budget right now so the 17* sounds like a good option. Will the 17* pump make any noticable difference? i also thought about installing one of the ITP oil rail crossover lines, is this worth doing? Also about how much will the pump run price wise from the Ford dealer?
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post #2 of 31 (permalink) Old 10-30-2007, 06:40 PM
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You shuld be able to get the 17* hpop from one of the vendors for a LOT cheaper than from Ford. As for how much of a performance boost you will get, I don't know, but it should still be better than stock.

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post #3 of 31 (permalink) Old 10-30-2007, 06:51 PM
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i think you have a 17* pump, but not as good as the 99.5-03.5. OBS's i beleive have 15* pumps.

97 F-250 7.3 psd 4x4: homemade Intake, fpr mod, IDM mod, 18k mod, HX mod, a pillar w/ 3 autometer gauges, 3" downpipe, minus muffler and cat.
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post #4 of 31 (permalink) Old 10-30-2007, 07:50 PM
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Quote:
Originally Posted by frogman18
I have a early 99 which if i understand has the same pump as the OBS trucks, what i was wondering is if it is worth upgrading to the 17*? I'm sure the HPOP is the reason my truck wont run the TS chip very good on the higher settings, i want to do big oil but $2000 is alittle out of my budget right now so the 17* sounds like a good option. Will the 17* pump make any noticable difference? i also thought about installing one of the ITP oil rail crossover lines, is this worth doing? Also about how much will the pump run price wise from the Ford dealer?
1) I just finished swapping my OBS pump for a 2002 17* pump and IMHO it was not worth the effort, let alone the money. My results may be different than some others but I went from 2500 psi of ICP at WOT to 2800 psi at WOT with the 17*. There was no SOTP difference, however my CEL and ICP code does not come on anymore.

My suggestion before buying a 17* pump get a scanner hooked up and check the ICP at WOT. Put your chip in the highest setting. Roll into the trottle with the trans in OD at about 70 mph and get the pedal to the floor. You will be running at least 90 mph by the time you get a good reading so you may want to make sure no cops are around The ICP should go up and down for a bit, then stabalize at a pressure. If it is under 2500 or so you may have something to gain.

Also before getting a new pump you should put some new o-rings on the IPR and check the ICP at WOT again as I listed above.

2) I have a crossover line on my truck also and I didn't notice a whole lot of difference in the smootheness of idle but I think there was a little gain. However the theory behind it is good. I would say use your own judgement on it. I will NOT add any power or economy.

stroker_baldy - Early 99's do have a 15* pump.

Eric
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post #5 of 31 (permalink) Old 10-30-2007, 08:58 PM Thread Starter
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Quote:
Originally Posted by racehauler
1)
2) I have a crossover line on my truck also and I didn't notice a whole lot of difference in the smootheness of idle but I think there was a little gain. However the theory behind it is good. I would say use your own judgement on it. I will NOT add any power or economy.
I didnt expect any performance gains just maybe smooth out the running.
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post #6 of 31 (permalink) Old 10-30-2007, 09:02 PM Thread Starter
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Quote:
Originally Posted by racehauler
1) I just finished swapping my OBS pump for a 2002 17* pump and IMHO it was not worth the effort, let alone the money. My results may be different than some others but I went from 2500 psi of ICP at WOT to 2800 psi at WOT with the 17*. There was no SOTP difference, however my CEL and ICP code does not come on anymore.

My suggestion before buying a 17* pump get a scanner hooked up and check the ICP at WOT. Put your chip in the highest setting. Roll into the trottle with the trans in OD at about 70 mph and get the pedal to the floor. You will be running at least 90 mph by the time you get a good reading so you may want to make sure no cops are around The ICP should go up and down for a bit, then stabalize at a pressure. If it is under 2500 or so you may have something to gain.

Also before getting a new pump you should put some new o-rings on the IPR and check the ICP at WOT again as I listed above.

My Oil pump wont keep up with the chip turned up.
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post #7 of 31 (permalink) Old 10-30-2007, 09:26 PM
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i also use to have a early 99 model, but 6spd. i had a ts chip on it and it would run like sh** turned all the way up. it would jump and jerk and carry on. i dunno what it was but the 17* may have fixed it i dunno. if it was me i would just put a stealth hpop or something other than factory parts. everytime i break something i go with bigger and better:Thumbup:

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post #8 of 31 (permalink) Old 10-30-2007, 10:26 PM Thread Starter
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Quote:
Originally Posted by orangepstroke
i also use to have a early 99 model, but 6spd. i had a ts chip on it and it would run like sh** turned all the way up. it would jump and jerk and carry on. i dunno what it was but the 17* may have fixed it i dunno. if it was me i would just put a stealth hpop or something other than factory parts. everytime i break something i go with bigger and better:Thumbup:

Thats what mine does and my cousin's that have the OBS trucks, All the people that i know that have 99.5-2003 7.3's the ts runs fine
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post #9 of 31 (permalink) Old 10-30-2007, 10:40 PM
 
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One thing to keep in mind guys is that one 15 degree hpop will work better than others. High miles, poor oil change intervals will take a pump out of spec and cause it to leak past the plungers as opposed to build pressure and volume.

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post #10 of 31 (permalink) Old 10-30-2007, 11:24 PM
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Boggin is correct. In my case I may have a fairly good 15* pump and a 17* that is a little weak.

I would still think about putting new o-rings on the IPR before you buy a pump. You will need new o-rings for the swap anyway, it will just mean you have to do a little extra work to pull the IPR and o-ring it first. Injector o-rings could also be seeping a little. That's not as cheap or easy to change though.

Are you saying your truck is bucking and jerking in the higher settings?

If so that could be in the programing.

Eric
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