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Old 06-16-2021, 06:30 PM   #1
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Default Carb swap,distributor swap

My throttle body on my '86-1/2 4x4 Hardbody truck [z24i] is dead and hits a wall at about 2500-3000 RPM. I got a carb for a z24,but am worried that the ignition will be a problem with no vacuum advance and all of the sensors screwing with the ecm. I read somewhere that you can change the part that meets the oil pump to the earlier dist and have the older style dist work. Any help will be welcome.
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Old 06-17-2021, 01:38 AM   #2
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That sounds about right, but you'd probably want to swing over and talk to the guys in the ratsun forum (https://ratsun.net/) if you are considering that. They do this stuff more often than we do here.
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Old 06-17-2021, 01:58 AM   #3
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Also try here. lots of info from people who are just crazy about the Z24 engines.



Nissan z24i engine info hoard
https://www.facebook.com/groups/584316252543402
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Old 06-17-2021, 02:17 AM   #4
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2500-3000RPM is limp mode. Any codes?



The 86.5 is pretty dumb. Takes a good bit to make it unhappy as it doesn't really know or care.
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Old 06-17-2021, 02:05 PM   #5
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Quote:
Originally Posted by swampyankee View Post
Also try here. lots of info from people who are just crazy about the Z24 engines.



Nissan z24i engine info hoard
https://www.facebook.com/groups/584316252543402
I literally just found this group last week. +1^^^^
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Old 06-29-2021, 06:39 PM   #6
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Quote:
Originally Posted by PoBoi850 View Post
I literally just found this group last week. +1^^^^
I made an adaptor from a piece of 1/2" aluminum with a venturi coming out of the carb side. The biggest drill I had was 1-3/8,so I made the holes vary from 1-1/2 to 1-3/8 and 1-5/8 to 1-1/2". I countersunk the holes to accept large taper head screws and took out the studs that held the throttle body on. I will have to figure out what resistors,if any will fool the computer into allowing it to run right. I am using a carb that is supposed to fit a Nissan Bluebird and hardbody with z24.
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Old 06-29-2021, 11:19 PM   #7
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To run a carb you have to advance timing about 8 degrees to fool the ecm into thinking it is OK.
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Old 06-29-2021, 11:31 PM   #8
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Quote:
Originally Posted by david29 View Post
To run a carb you have to advance timing about 8 degrees to fool the ecm into thinking it is OK.
Haven't seen you post in a while.

Everything okay?
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Old 07-01-2021, 07:15 PM   #9
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Quote:
Originally Posted by david29 View Post
To run a carb you have to advance timing about 8 degrees to fool the ecm into thinking it is OK.
Thanks,I'll try that,if it ever stops raining here. I've read that using a resistor to fool the ECM into thinking that conditions are right for running will work. I also read that an older style distributor will fit by changing the adaptor [?] that attaches to the oil pump. Maybe someone who struggled through this problem will chime in.
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Old 08-09-2021, 05:11 PM   #10
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I got the carb on,made an adaptor from a small steel angle for the throttle. The motor runs well and revs well and keeps the timing curve correctly,which might change with use. I had to buy a K&N style air filter as a 3-1/16" universal filter hasn't been found. I do have my throttle body,external fuel pump and pressure regulator if anybody wants it. PM me with an offer. I live in a rural County in which we don't have inspections,so that is't a problem I'll have.
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