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ZD30 lift pump set ups. Post 'em up!
  #1  
Old 06-02-2016, 10:01 AM
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Default ZD30 lift pump set ups. Post 'em up!

I'm half and half about setting one up on mine,
I'm interested to see what set-ups people are running and your thoughts and experiences.
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Old 06-02-2016, 11:52 AM
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Are you running out of fuel? If not then you don't need a lift pump
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Old 06-02-2016, 10:56 PM
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Quote:
Originally Posted by dilmah View Post
Are you running out of fuel? If not then you don't need a lift pump
thats not strictly true.
even bosh's book on those IP's show a lift pump and many stock vehicles have them.
they do benefit from some fuel pressure.

i like lift pump because it shows up any leaks really easily. air being sucked in goes unnoticed for a long time, but fuel dripping out is easily seen.
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Old 06-02-2016, 11:29 PM
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the vp44 is used in 2002 dodge rams as well with a massive 5,9L engine which makes 3 times the power and 2 times the torque of our Nissans. i have read about this mod, it might be ok to do if you really want to but i dont see the point. i mean even if you get 5-10 horsepower does it really worth the ~1,000 dollars you will most likely spend for a proper installation? also the risks of doing it wrong etc. personally i have huge trust on the IP its a proper japanesse unit not some Denso crap !
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Old 07-02-2016, 12:21 AM
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there is different sized versions of the VP44. by all accounts the dodge IP setup is to small for the engine. those require 15psi bare minimum and many upgrade the hoses/connections to ensure flow.

your not going to gain power by fitting a lift pump. but you may recover some lost timing, especially in the lower rpm.

the other thing is if you want to run a 2nd fuel filter due to dodgy fuel, then you have to run a lift pump. two filters is just to much restriction.
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Old 07-02-2016, 12:52 AM
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Quote:
Originally Posted by tweak'e View Post
there is different sized versions of the VP44. by all accounts the dodge IP setup is to small for the engine. those require 15psi bare minimum and many upgrade the hoses/connections to ensure flow.

your not going to gain power by fitting a lift pump. but you may recover some lost timing, especially in the lower rpm.

the other thing is if you want to run a 2nd fuel filter due to dodgy fuel, then you have to run a lift pump. two filters is just to much restriction.
later d22's in europe run a fuel filter plus a sedimentor after 2004 and i doubt i have ever heard of an IP failure maybe better fuel? i think normal diesel is rated at 55 cetane? not sure tho
and here is a picture of the setup (factory) sedimentor right next to the fuel filter. Vp44 pump
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Last edited by Stelianos; 07-02-2016 at 12:59 AM.
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Old 07-02-2016, 01:56 AM
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yes its a sedimentor rather than a filter. afaik sedimeter has no filter in it to restrict flow.
i wish they where fitted on the engines downunder.
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Old 07-02-2016, 01:59 AM
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YD's don't use the vp44 which are known to have problems. Yank tanks that use the vp44 have a lift pump fitted as standard, navaras don't. If you fit a lift pump fit a bypass as well, I didn't and when my carter died I ran the i.p dry. ICV% now sits a little lower. Bosch changed the vp44 timing piston sleeve from brass to steel in 2004 so they obviously new there were problems.
http://apps.bosch.com.au/AAExtranet_.../DISMV0022.pdf
http://apps.bosch.com.au/aaextranet_...dex-dism-v.pdf
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Old 07-02-2016, 02:03 AM
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early YD's used vp44, might be the smaller version of it tho. they where not sold in AU. tho NZ got them in the 2wd.
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  #10  
Old 07-02-2016, 02:18 AM
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Quote:
Originally Posted by Rumpig View Post
YD's don't use the vp44 which are known to have problems. Yank tanks that use the vp44 have a lift pump fitted as standard, navaras don't. If you fit a lift pump fit a bypass as well, I didn't and when my carter died I ran the i.p dry. ICV% now sits a little lower. Bosch changed the vp44 timing piston sleeve from brass to steel in 2004 so they obviously new there were problems.
http://apps.bosch.com.au/AAExtranet_.../DISMV0022.pdf
http://apps.bosch.com.au/aaextranet_...dex-dism-v.pdf
as tweake said, 2002-2007 d22s had the yd25 engine NON common rail with vp44 zexel injection pump. and yes zexel and bosch is not 100% identical i read that in patrol forum.
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