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300hp 4JB1, and the quest for more power!

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300hp 4JB1, and the quest for more power!

Postby paulthepilot5 » Mon Dec 19, 2022 7:09 pm

Gday all
Finally got around to putting the latest setup on the dyno. Just about reached the limit of the current pump, but have plenty of headway with the turbocharger, will be building a p7100 pump in the new year to take things further.
Specs:
301 HP / 636 Nm at the wheels
2.8 4JB1T
Inline A-pump, full fueling to 5000rpm
+50 4JB1 injectors
Borg Warner S200
Front Mount Air to Air cooler
Water/meth injection.
4JH1 head (for slightly larger intake valves)
ARP head studs
Upgraded valve springs and pushrods.

BD81BA48-253A-4630-B108-05F54A26F507.jpeg


Dyno Run:

https://youtu.be/ue8NWpsLJ5Q

9EA2676E-DB54-4A53-A8D8-B4470D797DF8.jpeg
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paulthepilot5
Isuzu Junior
 
Posts: 112
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: 300hp 4JB1, and the quest for more power!

Postby geeves » Tue Dec 20, 2022 5:26 pm

looks impressive but how does it drive on the road?
Sanding your knuckles before starting work can help. That way you cant skin them
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geeves
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Posts: 8855
Joined: Sun May 10, 2009 1:36 pm
Location: wellington
Age: 60
Country: NZ
City: Rangiora
Vehicle: 94 bighorn 4jg2
2004 Honda CRV

Re: 300hp 4JB1, and the quest for more power!

Postby paulthepilot5 » Tue Dec 20, 2022 7:06 pm

geeves wrote:looks impressive but how does it drive on the road?

Pretty good to be honest, i drive it everyday. It’s still making more torque off boost than peak torque on a stock JB1.
paulthepilot5
Isuzu Junior
 
Posts: 112
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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