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4JA1 and 4JB1 internals

Getting the best performance from your Isuzu, the in's and out's

4JA1 and 4JB1 internals

Postby rtwelder » Fri Oct 06, 2017 12:53 am

Hi!

I would like ask if the 4JA1 and 4JB1 non turbo engines have similar internals to the turbo versions?

parts such as pistons, connecting rods, crankshafts.........


I am thinking of adding a small turbocharger to my non turbo engines but I am not sure if the engine can reliably handle the added power.
rtwelder
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Re: 4JA1 and 4JB1 internals

Postby isuzurob » Fri Oct 06, 2017 2:58 pm

It will be fine with a turbo, air doesn't kill a diesel the more air the better the fueling side is where you wreak your engine
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Re: 4JA1 and 4JB1 internals

Postby rtwelder » Sat Oct 07, 2017 2:25 pm

Yes but can the internals (such as crankshaft, connecting rods, pistons) handle the increase in power and still be reliable?
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Re: 4JA1 and 4JB1 internals

Postby isuzurob » Sat Oct 07, 2017 4:12 pm

Yes it will be more than fine just don't go crazy on the fuel screw
isuzurob
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Vehicle: 1990 Isuzu Bighorn 2.8t/d, 3" extended shackles, 2" body lift, 33" silverstone extreme tyres, Front+rear bars, winch with 40m dyneex rope, 21/2 inch exhaust, lokka's front+rear, custom turbo, emissions removed, injector pump modified and more

Re: 4JA1 and 4JB1 internals

Postby rtwelder » Sun Oct 15, 2017 3:54 am

just for the knowledge, are the internals in the turbo and the naturally aspirated engines the same?

4JA1 and 4JA1-T
4JB1 and 4JB1-T
rtwelder
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