Jump to content

Z24 Swap In To 79 620?


ONELOWDATS

Recommended Posts

  • Replies 13
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

z24's are good motors, good torque, o.k. power, but the aftermarket for these motors is nill. I think a lot of guys will tell you it's a good idea, not my personal preference, but I think it's a fairly easy swap depending on the year of motor.

Link to post

The trans will"fit" but will not be "clocked" right.Also,if A/C is in your future you will have a nightmare fitting the compressor.I was going to do a KA-24 into a 620 and gave up when the A/C compressor wouldn't clear the steering box.(Both the KA-24 and the Z-24 sit vertically as opposed to the"lean" of the L-20.

Looks like i'm going to do a 2200 cc stroker based on the L motor instead.:)

Link to post

Here's my 620 /Z24 I have the starter in and 21 lb 280 Z car flywheel , '81 200sx tranny. That's it for this year. Next will be the EFI from a 200sx Z20E motor and the ported head I did.

 

http://i138.photobucket.com/albums/q251/datzenmike/IMG_0437.jpg[/img]"]IMG_0437.jpg

Link to post
  • 1 month later...

Plenty of wiring changes- nothing plugs together. Gonna spend a LOT of time with wiring diagrams from both vehicles to figure that one out. Big change is wiring up the twin-plug ignition and extending the wires to things like the temp gauge and choke heater since they are nowhere near where it is on an L-series.

 

Oh, and a new throttle cable is a must since the carb is now on the other side of the engine.

 

Trans:

 

It's not a "bellhousing swap" as B-series 5-speeds don't HAVE bellhousings- they have a front case and an extension housing. So, you'd need to swap the guts of the 280ZX tranny into a NAPS-Z transmission- easier to swap the whole tranny unless you manage to find a bad NAPS-Z 5-speed that hasn't had the front end tore to hell (ask Icehouse about that! I gave him my old NAPS-Z tranny that lost a bearing- it tore the case to hell as well). Besides, the 720 5-speed has a better gear ratio set than the '79 280ZX set which is the same as the 280Z 5-speed.

 

"Adjusting" the rear mount is an understatement- with the wrong angle transmission (L-series trans on a NAPS-Z oriented engine) will put constant strain on the motor mounts and tranny mount as they fight each other to compensate for the 15 degree difference. You can wedge the tranny mount, but the speedo cable may be near impossible to install due to the angle.

Link to post

wow....its not easy!!! lol

thanks for the info...looks like im just gonna find sides for this l18 and call it good....

besides, Its a daily driver...I just thought it wouldn't be that hard to swap it for a Z24..Is there an easier upgrade as far as swapping motors??

Link to post
  • 12 years later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.