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Had you considered the 87-89 Z31 style? It molds into the Z lines nicely, although might be a bit thicker and wider then what you're looking for. I can take exact measurements if you'd like. Full-sized versions of these pictures are in my gallery. -Eric

Yes, it would happen that quickly. MT-1 and GL-5 use high pressure modifiers to withstand the forces of hypoid gears as found in rear ends and some transfer cases. These modifiers wreak havoc on older transmissions with yellow metals in them (bronze, etc), causing them to fail in VERY short order. All fluids used in Z transmissions MUST meet GL-4 standards, and I perfer ones (for the non-synthetics) that do NOT meet the GL-5 standard as well. That's most likely my superstition, but it keeps me from grabbing the wrong bottle, or getting cheap stuff that's trying to make the best of both worlds, doing neither well. For non-synthetic, I use valvoline in the gallon jug, that's GL-4 only. Hard to find, but works great. Far better is Redline MTL, which is a GL-4 ONLY rated synthetic, not GL-5. Great for tranny, not rear end. At this point, your options are rebuild your tranny, or get a new one. Take it apart and see if you chipped/broke any gears. And just the Redline MTL, it's cheaper than Valvoline Synthetic, and plays nice with Z transmissions. Good luck, keep us posted. -Eric

My bet would be a bearing ate it, causing miss-alignment of the shafts. As the shafts come out of place, things don't work quite right, becoming not at all quite rapidly. The mobil 1 might have been the issue, I don't believe it's rated for GL-4, only GL-5. Fine in a rear end, but does not play nice with out transmissions. The Redline MTL plays perfectly with the brass (bushings, syncros, etc) in our older transmissions. Do you still have the bottle? Double check and post what ratings it has.

No, highly doubtful of a throwout bearing. Most likely a transmission bearing seized. Exactly what kind and how much fluid did you put in the transmission and rear end?

I got laid from being a drama geek. Involved (free) Patron shots and a breaking a bed that wasn't mine. Or hers.

I went on vacation to Rio when I was a jr in high school and came home with a simply amazing henna on my leg of a gecko done up in spots. My mom saw it, thought it was real, and nearly flipped out over how cool it was. She was seriously disappointed when the found out it wasn't real. I only wish I had a better picture of it, because I would get it again. Permanent this time.

Stay away from the 3.9 rear end with the wide ratio transmission. First gear will be nearly useless, and you'll cruise at 3500 on the freeway. The R180 3.54 will be just fine. What kills rear ends on Z cars is wheel spin, lighting up just one wheel spins those spider gears to the moon, and they don't like that. Shock loading on the rear end from clutch dumps isn't good either, but that isn't a huge deal at stock power levels with skilled driving.

the 7xxxxxxx number you have is just a casting number, and won't do much good. There were three 5 speed transmissions in the Zs. You can view their ratios here http://www.geocities.com/z_design_studio/ See this page for tranny IDs http://www.geocities.com/inlinestroker/ratio.html If you haven't been here, http://atlanticz.ca/zclub/techtips/ , read through everything they have. -Eric

That's better than when I worked at kragen and a guy who I helped get rare parts for offered to tattoo me something for free. "Like a spark plug, or something" Aux, you're evil.

Great list of sites, but it leaves out a few key ones. The ever useful Tech Tips at the Atlantic Z Car club: http://atlanticz.ca/zclub/techtips/ The OzDat Engine Design Utility: http://www.ozdat.com/ozdatonline/enginedesign/ Xenon's plethora of sites. With LOTS of good information, including owners manuals, service manuals, and plenty of other goodies: http://www.xenons30.com http://www.xenons130.com http://www.xenonz31.com http://www.xenonz32.com http://www.xenonz33.com http://www.xenonz34.com Datsun Sport Tek Articles. Especially the Racer Brown on Camshafts article: http://www.datsport.com/Tek_Menu.html CarFiche. With microfiche and service manuals: http://www.carfiche.com Nissan Parts Catalog Online. No S30, but it's easy to read fiche: http://nissan4u.com/ A metric ton of Z31 links: http://www.mygen.com/users/dbruce/myz31/Z31_bookmarks.html Other good reading: http://www.turbomustangs.com/turbotech/main.htm http://farnorthracing.com/autocross_secrets.html And of course, every single sticky right here on HybridZ! -Eric

First of all, what car is this on? Be more specific in your posts, we can only guess so much. That said, read the manual for your car. Not even the service manual, but the owners manual, the one that normally lives in the glove box when you buy the car new. If you don't have it, you can download a copy from Xenon's website, specifically http://www.xenons130.com/reference.html , for the 280ZX manuals. Also, that little red-square is the warning system on the S130 and Z31 cars. It indicates problems with the car. Push the little button next to the light. It will blink what's wrong. For fluid levels, the sensor may also be bad. In which case you either disconnect the sensor, and loose the warning for that fluid being low, fix the sensor, or find a working one. In any case, RTFM. There's are sections in both the owners manuals and service manuals that cover the system thoroughly.