Wiring for a ca18det into a d21

Discuss topics related to the CA18DE and CA18DET series engines.
727G35
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Wiring for a ca18det into a d21

Postby 727G35 » Tue Aug 18, 2020 9:16 am

Ok so i was saving for an sr20, and found a really nice local ca18det.
Im just wondering after i install the engine and wiring harness, does that wire to my ignition or do i need a special harness to wire the ignition to the starter on the new engine?
First time swapping. Ive pulled engines and rebuilt them so i figured a drop in would be the best way to start(and the price is amazing)
Many thanks!


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AZhitman
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Car: 72 240Z RB25, 63 Bluebird RHD, 63 NL320, 67 WRL411, 67 SPL311, 68 510 SR, 77 620 SR20, 89 Pao, 97 D21, 98 S14, 11 LS460L, 12 Titan 4x4.
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Re: Wiring for a ca18det into a d21

Postby AZhitman » Tue Aug 18, 2020 2:53 pm

Whatever you have on the D21 harness that used to go to the ignition switch can be used to start the CA.

727G35
Posts: 58
Joined: Mon May 20, 2019 6:38 pm
Car: 03 5at g35 sedan

Re: Wiring for a ca18det into a d21

Postby 727G35 » Wed Aug 19, 2020 8:57 pm

Okay and it bolts right in? Sounds akmost too easy!
All the write ups i find now the photos are all gone. If you have anything i should know or know of a good write up id appreciate it. I also seen some cheap rb25det is that just different mounts?

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AZhitman
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Car: 72 240Z RB25, 63 Bluebird RHD, 63 NL320, 67 WRL411, 67 SPL311, 68 510 SR, 77 620 SR20, 89 Pao, 97 D21, 98 S14, 11 LS460L, 12 Titan 4x4.
Location: Surprise, Arizona
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Re: Wiring for a ca18det into a d21

Postby AZhitman » Wed Aug 19, 2020 9:13 pm

Don't think you're fitting an RB into a D21 without lots of fab. I own both, and highly recommend you stick with a 4-cyl.

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float_6969
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Re: Wiring for a ca18det into a d21

Postby float_6969 » Tue Aug 25, 2020 5:04 am

The CA18 is VERY similar in how it's wired up to the SR20 and the KA24 that came in there. The wires are different colors, but the concepts are all the same. There's a few wires that need 12v+ and a few grounds. Starter wiring should be pretty comparable as well. That being said, I would talk to https://www.wiringspecialties.com/. The wiring on that CA is at least 30 years old now and pretty crusty. I'd bet that you're going to have a lot of broken plugs and bad insulation on the wiring. They could also probably make a wiring harness that would let you plug the CA into the D21.


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