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  #151  
Old 11-12-2019, 10:23 PM
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These rails seem go against the science of fluid power. I wish I saw this thread much earlier. Testing that has been done for our crossover line (anyone's really) we seen as high as 300-400psi difference between the two heads with an analog gauge on each head. With an hpx line, pressures were the same. Keep in mind 400psi is A LOT at either a 5:1 or 7:1 pressure intensification for fuel nozzle pressure loss of 2000-2800psi.

Reason behind the above info is that there needs to be more pressure sensors (at least 3 more IMO) installed on the heads to see if ICP is only showing well because it's close to the pump and the tubes are restricting flow to the injectors further away from the pump. So cylinder #2 (where the ICP sensor is at) sees the pressure quicker, but cylinder #7 potentially will be low. PCM won't throw a low ICP code for #7 because there is no sensor to read it.

As mentioned earlier, when laying out a fluid power system, you need to know how much pressure and volume is needed to operate the device(s) in the circuit without causing high duty cycle to the pump. It simply takes X amount of oil volume at Y pressure to run the injectors at Z pulse width.

And Dave didn't sell Swamps. They went bankrupt, are now called Swamps Motorsports. Last I heard from another former employee, he's not even with the company any longer.

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  #152  
Old 11-13-2019, 11:05 AM
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Quote:
Originally Posted by hucorey View Post
These rails seem go against the science of fluid power. I wish I saw this thread much earlier. Testing that has been done for our crossover line (anyone's really) we seen as high as 300-400psi difference between the two heads with an analog gauge on each head. With an hpx line, pressures were the same. Keep in mind 400psi is A LOT at either a 5:1 or 7:1 pressure intensification for fuel nozzle pressure loss of 2000-2800psi.

Reason behind the above info is that there needs to be more pressure sensors (at least 3 more IMO) installed on the heads to see if ICP is only showing well because it's close to the pump and the tubes are restricting flow to the injectors further away from the pump. So cylinder #2 (where the ICP sensor is at) sees the pressure quicker, but cylinder #7 potentially will be low. PCM won't throw a low ICP code for #7 because there is no sensor to read it.

As mentioned earlier, when laying out a fluid power system, you need to know how much pressure and volume is needed to operate the device(s) in the circuit without causing high duty cycle to the pump. It simply takes X amount of oil volume at Y pressure to run the injectors at Z pulse width.

And Dave didn't sell Swamps. They went bankrupt, are now called Swamps Motorsports. Last I heard from another former employee, he's not even with the company any longer.

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Isn't removing the check valves in the hpop lines at the pump fitting the same concept of a hpx crossover? Or shoud both be done for equal pressure?

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  #153  
Old 11-13-2019, 05:04 PM
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Quote:
Originally Posted by lincolnlocker View Post
Isn't removing the check valves in the hpop lines at the pump fitting the same concept of a hpx crossover? Or shoud both be done for equal pressure?

live life full throttle
Nope, we seen the 300-400 psi pressure difference between the two heads with the check valves out. I didn't realize other shops made these, but back when I was working at the steel mill, the engineers would always call out crossover piping on the big hydraulic pumps with dual outlets to stabilize pressure in the systems. That's where I got the idea from.



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E99 CCLB 4X4 SRW F350,Billstein5100s,X-code front leafs, 35" Nitto TG's on 22" Incubus', GTP38R w/ WW2 140V Mod'd IDM, Billet intakes, AFE stg II CAI, 4" Diamond Eye T/B SS exh, BTS trans w/P.I. tc, 6.0L cooler, FF 250/200% SS's, ******** Stg I cam, CompCams 910 springs, Smith Bros HD push rods, Insight CTS, Forged bottom end, PHP Hydra, Firestone Airbags, All Amsoil fluids, Stealth 1.1 HPOP, ARP studs, My Modified Fuel System & HPOP lines, AGR steering gear
  #154  
Old 11-13-2019, 05:08 PM
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Quote:
Originally Posted by hucorey View Post
Nope, we seen the 300-400 psi pressure difference between the two heads with the check valves out. I didn't realize other shops made these, but back when I was working at the steel mill, the engineers would always call out crossover piping on the big hydraulic pumps with dual outlets to stabilize pressure in the systems. That's where I got the idea from.



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Wowza!! Thats a big difference then!

live life full throttle
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  #155  
Old 12-02-2019, 04:06 PM
cjfarm111 cjfarm111 is offline
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Any test/dyno sheets available yet?
  #156  
Old 12-02-2019, 07:23 PM
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Don't hold your breathe.
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Last edited by superpsd; 12-02-2019 at 07:25 PM.
  #157  
Old 12-02-2019, 09:44 PM
cjfarm111 cjfarm111 is offline
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I’m starting to think it’s a joke. I always give someone the benefit of the doubt so I’ll be patient. I won’t be purchasing until I see some performance gains
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