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This first one opens in a pdf type file, the next two are threads from classiczcars. Hope it they help. SU tuning.rtf

I'm with you on that. Music just doesn't sound as good when we get a little older. When I was younger and had squeaky brakes or belts I'd crank the stereo up to fix them Now I actually put new pads on or new belts but I used to spend a paycheck on sunglasses, get drunk and jump off the boat to take a leak. Sunglasses don't float. 8^(

When you get them even at idle turn that very top screw/ spring until you get 2500 or 3000. I do 2500 but Ztherapy dvd shows 3000. It supposed be your cruising speed. My timing light shows rpms but you can stick your head in the cab and look at the gauge. Once you have it at high rpms measure air flow on the front. Then turn the screw/ spring to the left of the rear carb until it matches the front carb. Thats how I do mine. If you search "quick and dirty su tuning" Blue has a good write up on the procedure. There's youtube videos also. @Jarvo2 has some good info too.

I think slot cars changed my life, womp womps and I even had a whisper jet. If I'd played video games like most of my friends I would have clean fingernails and make more money today. But I'd wear penny loafers and use hair gel.

When you do the high rpm sync do you use the screw/spring at the rear carb to match air flow. The one on the linkage flat?

I'm thinking lacquer thinner would eat it up. Thats basically what carb cleaner is but much cheaper. My Dad uses it soaking small engine carbs for people's mowers he works on that go to church with him. They leave the bowls full at the end of mowing season and it turns to varnish over the winter months. I've used lacquer thinner to clean all my internal engine parts. After a couple of days soaking they clean up like new with nothing but a toothbrush and 140 psi blast of air.

Sounds like you've covered all the basics. Maybe changing to a thicker 20 weight would help the dashpots transition like captain obvious says. I use 3 in 1 blue label from Lowes hardware, $3.99 IIRC.

If cas means cold start injector that would be my guess. Backfiring through the Tailpipe Is Usually A Rich Symptom. You could unplug it and see what it does.

I have a #110 color with white interior. Has some rust but overall a solid original '72. Search "Whats it worth" for a bunch of pictures. I'm about 4 hours from Gulf of Mexico port in Mobile Alabama.

Looks darker to me. Wick humble's book has a formula for the hubcaps but he doesn't say anything about the tail light finisher being the same, I DON'T THINK. I'll check later and let you know for sure. I'm still laying in bed. I had a busy day Saturday and it was close to 100 degrees.

Do you have the vacuum advance coming off the front carb? Is the connecting rod in between front and rear carbs set up right, I made that mistake and had a helluva time getting them synchronized until I realized my mistake.

I'm getting ready to sale similar 240. I believe mine may be a tad bit nicer though although it has some rust. Would you know what Bo paid for that one? You can send me a PM if you'd rather not post it on here. I'd appreciate it Steve. Cliff

Worked on a '96 Sentra all day. Great little car too, easy to work on, cheap parts. That's my dangling carrot for some young cutie that needs a car and i know a few to. It will be a "come by here and pay here, then get the hell out" instead of " buy here, pay here". The simple life.

Amazing the Chevy Volt doesn't have a spare tire. That's the beginning of the end for working on your own car. Like the Germans started with the engine cover. I'm laughing to myself, the Volt is a drivable jump starter.

Do they call it ported because it's on the left side of the throttle plate? Just kidding, its on the left if you're looking at it from the passengers side, I think??? It's gotta be behind it, right? If the butterfly is closed there won't be any airflow, I would think. I'm leaving now, I've worn out my welcome. But have beer cans for sighting in my squirrel sniper rifle tomorrow. They're a problem where I live. They chew up more than my puppy but I can't shoot him. 8^)

That's a good idea, thanks again!

Yes, it's ported. Intake vacuum drops when the rpms go up. Sorry, I assume the only reason to plug it would be the vacuum leak.

My sticker says 10 BTDC on my '77 5 speed, just ran down and checked.

I've always plugged the hose and set mine at 10 degrees BTDC, but that's on a manual transmission. If you don't plug it you'll be creating a vacuum leak. I don't plug the distributor's hole, just the intake manifold's.

Well that was easy. they're totally different in design. 4 speed is on the left and won't fit into a 5 speed I have taken the blue one out of.

I know the 5 speed is blue, I'll pull out the 4 speed and see if it's yellow or maybe black. Thank you Zed Head, I "like this". From datsungarage.com, YELLOW is the 16 tooth for the 3.36 BLACK is the 17 tooth for the 3.54 BLUE is the 18 tooth for the 3.70 WHITE is the 19 tooth for the 3.90 RED is the 20 tooth for the 4.11 PURPLE is the 21 tooth for the 4.38

I'm about to replace the seal around the speedometer cable where it attaches to the transmission. I've read conflicting and confusing post about the cog or pinion gear. Does the speedometer cog go with the transmission or the differential? Should I put the '72 4 speed cog in the wide ratio 5 speed I just installed to keep the speedometer accurate? Or leave the 5 speed cog in the 5 speed since I didn't change the 180 differential? Thanks for any help.

Nothing makes me happier than than helping out another fricking crazy Z-ophile. 8^)

That's like sex!

Thanks Guy. Being "liked" by such a great and intelligent group of people means a lot to this small town fellow. Thank you Charles. Looking at your post and LIKE ratio it won't be long until you're in the "500 Club". I'm sure Ms Dennis has a psychological term or two for me and my "likes". 1,000, here I come! 113 with only 268 post, your gonna blow me out of the water! Autograph? I'm happy to say my fingerprints will be on your Z soon. This gives a new meaning to "cookie disclaimer", they're gonna need a bigger boat! Thanks Mike, without you this would've not been feasible .