ONELOWDATS Posted December 19, 2007 Report Share Posted December 19, 2007 I've Been Debating On Swaping Out My L20b For A Z24, Need Help Should I Do It, If Yes I Need To Know How Difficult Its Going To Be. Thanks For Any Info! Quote Link to comment
BEEBANI Posted December 19, 2007 Report Share Posted December 19, 2007 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. Quote Link to comment
banzai510(hainz) Posted December 19, 2007 Report Share Posted December 19, 2007 I say bolt some sidedraft carbs up to the L motor and youll have same power as the stock Z24(OK IM only guessing) However this is still akward as the later L20s are full of pullution gear and tite fit inbetween the intake /exhaust. EZer Bolt a 38DGES(Double opener) carb on there instead and just call it good Quote Link to comment
ONELOWDATS Posted December 19, 2007 Author Report Share Posted December 19, 2007 The Z24 Is Out Of A 1986, Will The 5 Speed Trans Out Of The 720 Fit On The L20b? Quote Link to comment
Z-train Posted December 19, 2007 Report Share Posted December 19, 2007 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.:) Quote Link to comment
datzenmike Posted December 20, 2007 Report Share Posted December 20, 2007 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]"] Quote Link to comment
laniadude Posted February 12, 2008 Report Share Posted February 12, 2008 did you have to replace a lot of things like the drivelines, motor mounts, tranny mounts, ???? i want swap my L18 for a Z24 Quote Link to comment
datsunaholic Posted February 12, 2008 Report Share Posted February 12, 2008 Motor mounts, yes- you will also want the trans that came with the Z24. Quote Link to comment
laniadude Posted February 12, 2008 Report Share Posted February 12, 2008 I have a tranny from a 79 280z...I was told that I can just swap the bell housing and it'll work... But if all I have to adjust is the mounts then it sounds pretty easy..Thanks....Oh, how about the wiring harness??? Quote Link to comment
datsunaholic Posted February 12, 2008 Report Share Posted February 12, 2008 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. Quote Link to comment
laniadude Posted February 13, 2008 Report Share Posted February 13, 2008 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?? Quote Link to comment
Z-train Posted February 13, 2008 Report Share Posted February 13, 2008 L-20 heads fit on Z blocks...:cool: Quote Link to comment
Oregon_620_Art Posted June 5, 2020 Report Share Posted June 5, 2020 On 12/19/2007 at 1:32 PM, ONELOWDATS said: The Z24 Is Out Of A 1986, Will The 5 Speed Trans Out Of The 720 Fit On The Quote Link to comment
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