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About Tucson620

  • Rank
    Advanced Member

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  • Location
    Baja AZ
  • Cars
    '71 521, '74 260Z

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  1. Tired of the Empi chrome brick on my Weber 32/36, so a weekend pandemic project. Followed the mklotz70 guide here. Found an acceptable spray paint color and install JUST clears the inside of my crooked hood. Only shiny thing on the truck. Quieter and I swear picked up power. Tricky to measure - hood clearance is tight with taller L20B in a 521, and the bottom of the housing can interfere with bits on the carb. Have an older 521 air cleaner I think looks nicer, but it’s taller and this 620 air cleaner was ugly before I started cutting. Chrome brick clearance: Eyeball with clown shoes cover paint. Remove bottom of the air filter – air saw, cutoff wheel, files and whatnot. I ended up re-clocking the bridge slightly and re-welding – that was a pain: Cut a scrap flat plate adapter to Weber. Mine’s a made-in-Italy DGAV. Best fit for air cleaner was centered: Lots of mock-up measures. Position plate for lowest installation without fouling something. I’m learning how to weld – first sheet metal project! Need to prep better, also avoid gaps in fit-up: My local Ace had a Krylon color Colormaxx Gloss Bahama Sea – cap looked a decent match under the flourescents in the store. This is a faded Z car air cleaner I was using to match. But color is brighter and more vivid aqua when compared in natural light. Wouldn’t use on concours project, but OK for Ratsun. Used glass beads in blaster to prep surface, remove red and faded paint:
  2. YES!!! Concours-level detail pays off! Congratulations! Like to see both drag and autocross results with killer rubber
  3. Tucson620

    521 carb problems

    I think you should pull a Saturn one from a junkyard. Get you a pulley, etc. https://ratsun.net/topic/7830-saturn-alternator-how-to-wire-in/
  4. They look like vintage Shelby Mesh mags I had for Z car. Didn't know they existed for 6 lug. But there were a lot of similar knock-offs. Pretty cool looking. https://zcarsource.com/wheel-shelby-mesh-14x7-used
  5. Same with Z car - best results by sealing EVERYTHING in the back. Hatch, spare tire well grommets, antenna, etc. Hatch and tail lights were big leak spots - new rubber was cure. You can do a smoke test - rig a shop vac to pull air from sealed cabin. Wave cigarette, etc. around rear, monitor test subject in back of wagon for reaction.
  6. Yes, unlimited aero mods possible now! Please remember to keep your receipts...
  7. This. Also, any pics of the surgery? For what it's worth, I installed mklotz's kit on my truck plus a Wilwood manual proportioning valve. None of this NLSV witchcraft, and left rears as drums. Very happy with results and braking is much less an adventure now. Do your research and get a beebani or mklotz kit, some junkyard parts, and new or reman shiny parts. Here I've had the boy load up telephone poles, then headed for steepest downhill!
  8. Yes! Bet the poor file cabinet didn't see that coming :rofl: Was thinking of related race car nicknames. How about 'Rolling Papers'
  9. Between this and the other thread (http://community.ratsun.net/topic/73826-speedometer-5-speed-tranny-swap/ ) I'm more confused. I might be mixing up truck and Z (short and long) transmissions here. Seems like your sleeve is a different length than would expect for 4 speed. Are the pinion gear shafts longer too? Here's sleeve and gear with yellow 16T out of 260Z 4 speed. Looks 0.75" or more shorter than yours. Have 20T red cog from a 4.11 Z (not clear on source) - it fits in this housing fine, but I think it's the wrong sleeve offset for gears to mesh. Don't have the proper 20-23T sleeve for it. Sleeve + gear overall length approx. 3.125", gear and shaft approx. 3.0" by itself.
  10. Never had great luck with Datsun speedo accuracy BUT my franken-521 is pretty good - 4.375 gears, I believe 19T White pinion in a 280Z 5 speed, 225/60R15 tires (25.6"). None of this helps you, other than to say those tires do NOT fit, rub everywhere. :lol: But I do have a red 20T pinion gear out of a 4.11 Z laying around. Not sure I have a housing to match though. Have a 4 speed sitting - I'll check this weekend and PM you re: classified ad.
  11. Sweet! What's the background - why were they checking out the MX520?
  12. :rofl: Sig line material there
  13. Google says Motorsports Auto, the Z Store, sells them.
  14. Tucson620

    New to us 521's

    I for one welcome our new 521 overlords
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