Engine Swap for a 1986 Pup

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tee5226
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Isuzu vehicle(s): 1986 isuzu pup, inline 4, 1.9L

Engine Swap for a 1986 Pup

Postby tee5226 » Wed Oct 24, 2018 10:59 pm

Currently I have a 1986 Pup with a 4 speed 1.9L and just digging around to find out more about my truck. As I replace parts here and there, I notice that many are hard to come by, let alone trying to find information about the parts themselves. This led to my curious thought of what engines are capable for replacing the 1.9L I have currently. Any suggestions on what would fit in my engine bay?

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puttputtinpup
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Re: Engine Swap for a 1986 Pup

Postby puttputtinpup » Thu Oct 25, 2018 6:33 am

I'm by no means a gasser expert, or any kind of expert. I think the 2.3 and maybe even the 2.6 would bolt up. It seems the 1.8 diesel that came in the Imark and some Chevy Chevette (Isuzu engine) has the same bolt pattern. That diesel may be a bit underpowered for the Pup.

tee5226
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Isuzu vehicle(s): 1986 isuzu pup, inline 4, 1.9L

Re: Engine Swap for a 1986 Pup

Postby tee5226 » Thu Oct 25, 2018 7:26 am

Yeah definitely not looking to lose hp :lol:

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Halden
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Re: Engine Swap for a 1986 Pup

Postby Halden » Thu Oct 25, 2018 7:36 am

Andy is right. The 2.3 bolts right up. I believe you might have to do something with engine mounts for the 2.6. it's the same block as the 2.3 but the mounts are a little different is my understanding. The 1.8 diesel is also a super straight forward setup for andiesel swap. You just need to get power to the glow plugs and then you can take the power that would normally go to the coil and stick it on the fuel cutoff solenoid.
You would lose some pep but those little diesels are great. I like them better than the 2.2 diesels.

If you swap a 2,6 or 2.3 throw a five speed in with it and you'll have a real highway cruiser with that rearend.
It's not pronounced "Ih-soo-zoo", it's pronounced "It-screws-you"
83 LS Long Bed Diesel
64 Chevy C20 w/ 283 & 4 speed.
05 Sonata with a standard

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JoeIsuzu
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Re: Engine Swap for a 1986 Pup

Postby JoeIsuzu » Thu Oct 25, 2018 10:36 am

Based on his intro, I'm guessing he's looking for higher performance than the options suggested. ;)

Jack

tee5226
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Isuzu vehicle(s): 1986 isuzu pup, inline 4, 1.9L

Re: Engine Swap for a 1986 Pup

Postby tee5226 » Thu Oct 25, 2018 6:15 pm

No doubt Jack. Ive seen some pups with a c223 small block in them but those are rather hard to come by

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Halden
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Re: Engine Swap for a 1986 Pup

Postby Halden » Fri Oct 26, 2018 10:33 am

If you're looking for performance there have been a few 350 swaps documented here. I personally think a 283 would we a little better it's quite a squeeze with a 350.
It's not pronounced "Ih-soo-zoo", it's pronounced "It-screws-you"
83 LS Long Bed Diesel
64 Chevy C20 w/ 283 & 4 speed.
05 Sonata with a standard

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RollinCajun
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Re: Engine Swap for a 1986 Pup

Postby RollinCajun » Tue Nov 20, 2018 11:00 am

4.3L TBI would be a great swap too. It has a ton of power for a v6 will give you way more room than a v8 would and still roast the tires till they pop. Bar far one of the best chevy engines ever made.
1987 Isuzu Pickup Gas (Short Bed)

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puttputtinpup
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Re: Engine Swap for a 1986 Pup

Postby puttputtinpup » Tue Nov 20, 2018 2:39 pm

RollinCajun wrote:4.3L TBI would be a great swap too. It has a ton of power for a v6 will give you way more room than a v8 would and still roast the tires till they pop. Bar far one of the best chevy engines ever made.

Agreed! Not sure if the tbi 4 3 has issues with the intake gasket leaking from dexcool. My 98 chevy 5.7 spider injection truck has the intake gasket problems. Fixed with felpro. But yes, 4.3 is a great option for an engine swap

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RollinCajun
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Re: Engine Swap for a 1986 Pup

Postby RollinCajun » Tue Nov 20, 2018 2:57 pm

puttputtinpup wrote:
RollinCajun wrote:4.3L TBI would be a great swap too. It has a ton of power for a v6 will give you way more room than a v8 would and still roast the tires till they pop. Bar far one of the best chevy engines ever made.

Agreed! Not sure if the tbi 4 3 has issues with the intake gasket leaking from dexcool. My 98 chevy 5.7 spider injection truck has the intake gasket problems. Fixed with felpro. But yes, 4.3 is a great option for an engine swap


No they didn't only the vortec engines had the issues with the spider intake. The older 4.3L TBI engines I'm talking about had a regular intake on them like a carburetor intake. Better response and fuel economy than the carb and pretty easy to build a standalone harness for them. Very easy to find the engines for really cheap and also super easy to find the 700r4 transmission for them also.
1987 Isuzu Pickup Gas (Short Bed)

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puttputtinpup
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Re: Engine Swap for a 1986 Pup

Postby puttputtinpup » Tue Nov 20, 2018 8:49 pm

Off subject a bit, but Ive rebuilt the tbi on my son in-laws s10 tbi. Ive done the manifold gaskets and spider inj upgrade on my 5.7.

Ok. I vote for a 4.3 for the engine swap! (Back on topic)

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Halden
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Re: Engine Swap for a 1986 Pup

Postby Halden » Tue Nov 20, 2018 9:33 pm

puttputtinpup wrote:Off subject a bit, but Ive rebuilt the tbi on my son in-laws s10 tbi. Ive done the manifold gaskets and spider inj upgrade on my 5.7.

Ok. I vote for a 4.3 for the engine swap! (Back on topic)


Let's go with something a little more advanced than toilet bowl injection here, folks. :lol:
It's not pronounced "Ih-soo-zoo", it's pronounced "It-screws-you"
83 LS Long Bed Diesel
64 Chevy C20 w/ 283 & 4 speed.
05 Sonata with a standard

That405Guy
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Re: Engine Swap for a 1986 Pup

Postby That405Guy » Sun Dec 09, 2018 11:19 am

302s fit pretty good. Got one in my 87 pup.
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puttputtinpup
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Re: Engine Swap for a 1986 Pup

Postby puttputtinpup » Sun Dec 09, 2018 12:32 pm

Nice!

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JoeIsuzu
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Re: Engine Swap for a 1986 Pup

Postby JoeIsuzu » Sun Dec 09, 2018 4:28 pm

That405Guy wrote:302s fit pretty good. Got one in my 87 pup.

Is that a Ford 302, or a GM?

Jack