87' motor into a 92' ?? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 08-07-2001, 09:15 PM Thread Starter
 
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87\' motor into a 92\' ??

The motor in my 92' Zuk gave it up, which is my daily driver. Any problems with swapping the fresh motor out my 87' into the 92? The only thing I can think of is the fuel pump on the 87' which could be blocked off.


87 Samurai- 5.12's locked up,4340 front,hybrid rear,4.16's,P/S.,Toy. carb.,DT header, 33's, 2" exhaust and Durabak inside and out.
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post #2 of (permalink) Old 08-08-2001, 12:22 PM
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Re: 87\' motor into a 92\' ??

The 92 is FI right? As I don't know much about the FI motors
take everything I say with a grain of salt. I think you should be able to swap it in, You will need the dist, and intake from the 92. There may also be a crank positioning sensor on the 92, But I think I remember that it is on the
dist assy. Good luck

Glenn
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post #3 of (permalink) Old 08-08-2001, 01:18 PM
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Re: 87\' motor into a 92\' ??

If you are NOT swapping the intake to run the throttle body on the '87 motor you will need to swap the wiring harness and ECM as the sensors and electrical plugs are different on the EFI and carbed engines. (unless you're running a Weber or some other carb) I'd swap the intake and run the EFI if it was working well before the engine died.

The o2 sensor is also positioned down lower on the EFI exhaust manifold in order to get its reading from all four cylinders. I don't know if it MUST be swapped for the EFI to work right, but that's a possibility.

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post #4 of (permalink) Old 08-08-2001, 01:56 PM
 
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Re: 87\' motor into a 92\' ??

slowpoke wrote:

>>The only thing I can think of is the fuel pump on the 87' which could be
>>blocked off.

You didn't say if you are just switching the short block and keep the EFI???
If you're planning to go for a plain vanilla carbureted system, you [b]must[/] use the mech. fuel pump. The EFI pump delivers ~50PSI versus ~6/10PSI on the carb. systems. Just my .02

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