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1995 Rodeo DLX 4x4 2.8L Compound Turbo Ute

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Re: 1995 Rodeo DLX 4x4 2.8L Compound Turbo Ute

Postby handymanny01 » Fri May 01, 2020 10:56 am

Thanks Paul, yup, have machined down pads aprox 5.5mm for the most thread engagement i can get in the block, without dropping the top of the nuts too low as the injector clamps pivot off them.. really appreciate the knowledge sharing,, really helps with these isuzu builds!
Cheers,
Alex
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handymanny01
Isuzu Junior
 
Posts: 68
Joined: Tue Jul 12, 2016 9:39 pm
Age: 43
Country: NZ
City: Wellington
Vehicle: Isuzu MU 3.1 Direct injection 4JG1 conversion, Vf10 hybrid, ported wastegate, mild port head, custom 12mm pump, 3"dump and system, 3" inlet / pod filter, EGR delete, 2" body lift, 2" (ish) suspension lift, 33" on 15" steelies , recaro seats, nardi wheel,,, rear LSD , front "lokka"

Re: 1995 Rodeo DLX 4x4 2.8L Compound Turbo Ute

Postby paulthepilot5 » Tue May 05, 2020 6:35 pm

handymanny01 wrote:Thanks Paul, yup, have machined down pads aprox 5.5mm for the most thread engagement i can get in the block, without dropping the top of the nuts too low as the injector clamps pivot off them.. really appreciate the knowledge sharing,, really helps with these isuzu builds!
Cheers,
Alex


Did you measure up for that 5.5mm. I think I was around 4mm
paulthepilot5
Isuzu Junior
 
Posts: 109
Joined: Thu Apr 05, 2018 8:56 pm
Age: 34
Country: Australia
City: Brisbane
Vehicle: 1995 Isuzu Rodeo 2.8d
Compound twin Turbo
12mm fuel Pump
+50 injectors
Water/meth injection
14s 1/4 Mile

Re: 1995 Rodeo DLX 4x4 2.8L Compound Turbo Ute

Postby handymanny01 » Tue May 05, 2020 9:00 pm

Yup, it was a compromise between the factory amount of thread engagement in the block and setting the nuts at the right height for the injector clamps, (these are the "wide" clamps = 2 spring injector) so I've got as much engagement as possible, while setting the nuts only 1mm lower than standard in the head, which the clamps should cope with... all going well the head is going back on this weekend !
handymanny01
Isuzu Junior
 
Posts: 68
Joined: Tue Jul 12, 2016 9:39 pm
Age: 43
Country: NZ
City: Wellington
Vehicle: Isuzu MU 3.1 Direct injection 4JG1 conversion, Vf10 hybrid, ported wastegate, mild port head, custom 12mm pump, 3"dump and system, 3" inlet / pod filter, EGR delete, 2" body lift, 2" (ish) suspension lift, 33" on 15" steelies , recaro seats, nardi wheel,,, rear LSD , front "lokka"

Re: 1995 Rodeo DLX 4x4 2.8L Compound Turbo Ute

Postby paulthepilot5 » Fri Aug 27, 2021 3:46 pm

Hi All

A few new bits to play with.
Had a new inline pump built, capable of around 220cc
New injectors too, +100 over factory
Should be able to put the compounds to work with this setup

Just fitting up pump and timing pulley on spare engine to test fit and adjust adaptor.

A208F7CF-BA60-4F7D-8004-71917030ED50.jpeg


3930C181-548C-45D6-84E9-AC118D8B5374.jpeg


57AB40D5-8A6D-47BB-94D1-DDAACB4C4A10.jpeg
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paulthepilot5
Isuzu Junior
 
Posts: 109
Joined: Thu Apr 05, 2018 8:56 pm
Age: 34
Country: Australia
City: Brisbane
Vehicle: 1995 Isuzu Rodeo 2.8d
Compound twin Turbo
12mm fuel Pump
+50 injectors
Water/meth injection
14s 1/4 Mile

Re: 1995 Rodeo DLX 4x4 2.8L Compound Turbo Ute

Postby handymanny01 » Tue Aug 31, 2021 10:32 pm

220 CCs !! Jeebus!! My 12 mm will do 160, so that's crazy!! Look forward to seeing results !
handymanny01
Isuzu Junior
 
Posts: 68
Joined: Tue Jul 12, 2016 9:39 pm
Age: 43
Country: NZ
City: Wellington
Vehicle: Isuzu MU 3.1 Direct injection 4JG1 conversion, Vf10 hybrid, ported wastegate, mild port head, custom 12mm pump, 3"dump and system, 3" inlet / pod filter, EGR delete, 2" body lift, 2" (ish) suspension lift, 33" on 15" steelies , recaro seats, nardi wheel,,, rear LSD , front "lokka"

Re: 1995 Rodeo DLX 4x4 2.8L Compound Turbo Ute

Postby handymanny01 » Tue Aug 31, 2021 11:05 pm

On bigger injectors Paul, Maybe you might help shed some light on something thats been intriguing me for a while,, Earlier this year, my fuel tech and I did a back to back test on the smallest nozzles we could find, versus the biggest nozzles we could find, (factory 4JG1) vs (biggest factory 4JB1) put up against my 160cc pump, same injector bodies, same test bench, same lines , same everything, and they BOTH flowed exactly the same amount of fuel,,, (you read that right, a tiny 5 x 0.21mm nozzle will happily flow 160CCs) on paper the 4jb1 nozzles were considerably larger, but flowed exactly the same...
so the question is, if you don't care about the extra stress on the injection pump,, why would you use bigger nozzles?
handymanny01
Isuzu Junior
 
Posts: 68
Joined: Tue Jul 12, 2016 9:39 pm
Age: 43
Country: NZ
City: Wellington
Vehicle: Isuzu MU 3.1 Direct injection 4JG1 conversion, Vf10 hybrid, ported wastegate, mild port head, custom 12mm pump, 3"dump and system, 3" inlet / pod filter, EGR delete, 2" body lift, 2" (ish) suspension lift, 33" on 15" steelies , recaro seats, nardi wheel,,, rear LSD , front "lokka"

Re: 1995 Rodeo DLX 4x4 2.8L Compound Turbo Ute

Postby paulthepilot5 » Sat Sep 04, 2021 6:46 pm

handymanny01 wrote:On bigger injectors Paul, Maybe you might help shed some light on something thats been intriguing me for a while,, Earlier this year, my fuel tech and I did a back to back test on the smallest nozzles we could find, versus the biggest nozzles we could find, (factory 4JG1) vs (biggest factory 4JB1) put up against my 160cc pump, same injector bodies, same test bench, same lines , same everything, and they BOTH flowed exactly the same amount of fuel,,, (you read that right, a tiny 5 x 0.21mm nozzle will happily flow 160CCs) on paper the 4jb1 nozzles were considerably larger, but flowed exactly the same...
so the question is, if you don't care about the extra stress on the injection pump,, why would you use bigger nozzles?


Perhaps something else coming into play there. I know for a fact going from standard 4hole JB1 nozzle to a +50 4 hole JB1 nozzle on my 12mm made a significant improvement. A lot of people that have done mechanical pump swaps on their 4JH1’s also see improvements going to the larger +50s the factory JH1 nozzles have always limited the output of the mech pumps.
On the test rig the +50s limited my inline pump to around 200cc going to the +100s got the full 225cc out of it.
paulthepilot5
Isuzu Junior
 
Posts: 109
Joined: Thu Apr 05, 2018 8:56 pm
Age: 34
Country: Australia
City: Brisbane
Vehicle: 1995 Isuzu Rodeo 2.8d
Compound twin Turbo
12mm fuel Pump
+50 injectors
Water/meth injection
14s 1/4 Mile

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