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4JG2 Intercooler install

Getting the best performance from your Isuzu
DonaldNZ
Posts: 57
Joined: Mon Dec 31, 2018 10:49 am

Re: 4JG2 Intercooler install

Post by DonaldNZ »

maybe
what if the power gain is greater than the power consumed by the a/c?
tonkamu
Posts: 109
Joined: Sun Jan 01, 2017 9:18 pm

Re: 4JG2 Intercooler install

Post by tonkamu »

Cool idea never heard of that before. Must be a reason why its not a common thing to hear about tho :geek: Does that a/c air enter before the turbo intake, wouldn't that nice cold air just turn warm once past the turbo passing intercooler and a warm intake mani.

Water to air intercooler seems to be the way to go.
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geeves
Posts: 1980
Joined: Mon May 11, 2009 1:56 am

Re: 4JG2 Intercooler install

Post by geeves »

Big trucks run refrigerated intercoolers but they run high capacity high boost pluss other magic to get 700+ kw all day every day. Race trucks are the same engines just pushed a little harder and 1000kw is common
isuzurob
Posts: 480
Joined: Mon Jun 18, 2012 3:25 am

Re: 4JG2 Intercooler install

Post by isuzurob »

Ac will cool intake temps but it's like having a supercharger it robs power to make power just soesnt make sense, just use a w2a system and water meth
DonaldNZ
Posts: 57
Joined: Mon Dec 31, 2018 10:49 am

Re: 4JG2 Intercooler install

Post by DonaldNZ »

a/c air is not used, the intercooler is only liquid cooled and the liquid [a water & antifreeze mix] is circulated by a small electric pump from the inter cooler into another heat exchanger along with the a/c gas.
Seemed a complicated way to get more power to me too.
I guess sometimes 500 horses just aint enough .
This guy was into the 1/4 mile.

https://www.pwr.com.au/products/interco ... tercoolers

http://www.speedhunters.com/2017/08/usi ... st-charge/
DonaldNZ
Posts: 57
Joined: Mon Dec 31, 2018 10:49 am

Re: 4JG2 Intercooler install

Post by DonaldNZ »

I'm considering this too, did you do it and do you like the improvement ?

I've been advised setting the boost to 12 psi [rather than 8-10 factory ] should lower the engine temps & improve engine longevity too.

Should the bonnet scoop be a tunnel with the rear as open as the front so when in low low grinding up a 30 minute hill it helps with cooling ?
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