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PostPosted: Thu Dec 21, 2017 4:38 pm 
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Joined: Mon Jul 13, 2015 1:17 pm
Posts: 8
Location: Lexington KY
Good evening Gentlemen,

I have officially jumped off the deep end and probably dreaming bigger than my pocket book can go...

I recently bought an intact and running 4ZC1-T out of an '89 Isuzu Impulse, when I bought it I grabbed all of the wiring harness and computers to go with it, expect the gauges (which now I know might have been a bad idea...)

I am about to purchase a '87 Isuzu trooper 4x4 5speed here in the next few weeks for the transmission and rear end. Possibly might keep a few other parts like the A-arms and drive line. But she also has a running 2.3L 4ZD1.

My dilemma is whether or not to leave the 2.0L alone; or punch out the 2.3L to a 2.6L, throw all the forged internals into it, and try to figure out all the tuning to make one bad arse little rig...

As far as I know the internals are all the same from the 4ZC1 to the 4ZE1, so parts should be easy to find and to swap. But that's where I need you guys. Is this correct?

The easy way to go about this is just to build up the 2.0L and call it a day, but if I'm going custom anyways... Might as well go big...


What do you guys thing? Am I crazy? Is it feasible?
Thanks!


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PostPosted: Thu Dec 21, 2017 10:57 pm 
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Joined: Tue Oct 07, 2008 8:07 pm
Posts: 872
Location: N W Arkansas
You can't "punch out" the 2.3 to make a 2.6, different block/pistons/rods/cranks. Externals like heads/intakes/exhausts/distributors/accessories will interchange.
The 2.0 4ZC1 is a 2.3 4ZD1 with a smaller bore & stroke so the "forged internals" will only give you a 2.0L engine.
The turbo head, intake, exhaust & electronics will fit to either a 2.3 or 2.6 lower end for a larger displacement turbo engine.
A '93-0n 2.6 with the deep dish pistons would probably be the best choice, the lower initial compression will work better when under boost.
If you still have access to parts from the Turbo Impulse it should also have a factory LSD rear end in 3.92 ratio. To use it in your 4x4 you'll need to add a thrust block & swap the LSD carrier to your LUV gears.

_________________
'78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, rough body, bought new 12/4/78.
'87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch,more to come.


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