zcarnut

The difference in the curved guide was mentioned by Gene Crowe (Bob Sharp’s head mechanic) way back in 1977 in a print article he did about blueprinting a L24 race engine: “ …The curved timing chain guide should be moved toward the chain to take up [any] excess slack and the heavier 280Z guide should be used…” The fact that there are two kits is probably because Nissan continued to use the 13091-A3500 guide on the later L24E engines (found in the 810 and early Maxima models). But I don’t know why Nissan would have continued to use two different guides during the 1976-1983 time period. BTW, the L24 and L28 straight guides have the same part number (13085-21002), so I can’t see why they would be different. I’ve never seen the fuel pump cam included in one of the [L24] aftermarket kits.

The only different I’m aware of is that the L28 curved timing chain guide (13091-N4201) is more sturdy than the L24 one (13091-A3500). This is the guide on the slack side of the chain. Because of this, I have always used the L28 one, even when re-building a L24 engine.

zKars is right. If the spindle pin is "rust-welded" to the strut, no tool will save it. You will have to cut the spindle and press out the pieces. Yes, the special pullers will help (along with lots of heat), but it’s no guarantee. What I would like to see someone make and sell stainless steel spindle pins (and the small locking pin as well). Yes, I realize that this is a critical suspension item, but a good mechanical engineer should be able to specify the details. This would also allow having a larger diameter for the end nuts, say 14mm instead of 12mm, or even use SAE 9/16 inch fine pitch threads because fine pitch stainless metic hardware is difficult (and expensive) to get here in the U.S.

Remember, the air intake door (which brings in either fresh air or re-circulated air) and the “mode” (heat or ac) door are vacuum controlled. Look for cracks in the vacuum lines on the solenoid valves and the vacuum bottle in the engine compartment. A defective check valve can also cause this.

If you blow up and lighten one of the pics from jmhtx in the OP, I think I see a center bolt, so I believe that these are the R180 bolt-in axles. BTW, I checked on the 1981-85 Maxima and the one with the CV axles used clip-in axles with a R180 diff. Likewise for the 280ZX which had the R180 with CV axles. I actually have the Maxima R180 and its CV axles installed in my 1979 810.

The R180 diff used in the front of the 1979-80 720 4x4 truck used bolt-in axles, but the 1981-85 version had clip-in axles. I need to check on the R180 used in the 810's and Maxima's.

The early R180’s had bolt-in axles whereas the later R180’s used “snap-in” axles secured with a C-clip which is what you have. To remove the axles simply pry up evenly with a large screwdriver. A wealth of info on the HybridZ forum: http://forums.hybridz.org/topic/49194-differential-cv-lsd-hp-torque-r160-r180-r200-r230-diff-mount/ You may have to be a member to view the photos.

Here's what I did:

http://zhome.com/Classic/Restore/HubCaps.htm

The government mandated changeover to R134a was 1994. However, Nissan was one of the first to switch with some 1993 models using R-134a. The 1981-85 Maxima would have used R12 refrigerant.

The 1981-85 Maxima one will bolt on to your 280Z. I’ve got one on my 260Z. It is larger in capacity and the lack of an oil sump means less oil is needed. The 280ZX/Z31 will also fit but the inlet (S) and outlet (D) fittings are reversed so you would need custom hoses to use it. Also the later Z31’s used a serpentine belt instead of a V-groove belt.

I just received the brake and fuel line insulator kit and I must report that the quality of the insulators is absolutely top notch!! Thanks Steve!

http://www.ebay.com/itm/Zinc-Plate-6mm-Hex-Dog-Point-SEMS-1-Bolts-Fender-Body-M6-x-1-Metric-Thread-/221646973461?pt=LH_DefaultDomain_0&var=&hash=item339b306a15

It's back!! Datsun Z Series 240Z Series 1 | eBay Previous deal fell through (imagine that!).

Handbrake handle and pushbutton. These were never available separately and since NOS handbrakes are NLA we are forced to restore the originals. Unfortunately, these parts are destroyed during their removal. Early 240Z wiper motor cover. Before there was the “bag” Nissan used a plastic cover. Speedometer cable and hood opener cable grommet. The very early 240Z’s lacked a separate hole in the firewall for the hood opener cable, so Nissan combined it with the speedo cable.