Everything posted by zKars
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saturday night music thread
Now how am I going to resist the urge to go for a drive in a Datsun to the mountians this winter? Not sure where to find knobby snow tires anymore to recreate this properly..
- Rebuilt modified L24 motor for sale
- 510 Su's
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510 Su's
Got these beautiful FLAT TOP carbs running on the 510 tonight. They run SO well. Took it out for a quick back lane romp and had TOO much fun. Here is proof of concept. Note. The idle is happening with the throttle blades 100% closed. I swear I'm going to get fake plastic hemi-spherical caps made that you can snap on your flat top bells so you don't have to be embarrassed every time you open your hood... And no laughing at the roof rack or the mack-tack paint job....
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72 240Z Carb Spacers
Make sure your manifold has the holes as well. And make sure the spacer goes on the right way. One hole is for water into the carb, the other for water leaving. If only I knew which was witch... And now for something actually useful, (harhumfff...) I can help you with a pair of spacers. Llet me know if no one closer can help find you one.
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1973 240Z Resto Mod for sale
I know I know. If only parking space and money were infinite I'd have a 100 of them... We'll see what spring does to my attitude about this. Merry Christmas Richard. See you next year, hopefully more often!
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Engine Cradle???
Only disadvantage I've seen is it keeps making me think something is wrong when I look at an L6 sitting on one. Then I remember, should be tilted over to the left a few degrees. Looks very strange sitting upright!
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Engine Cradle???
I love this cradle design also have several in use. The simplist form is a pair of 2x6 long ones and a pair of 2x4's at the ends to let the pan hang down into the cradle at each end and allow you to position fore and aft as needed. 22 ish long 2x6's and 8.5" 2x4's inbetween the 2x6's at each end (12.5 total width)
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1973 240Z Resto Mod for sale
I did say that in a moment of weakness...
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1973 240Z Resto Mod for sale
oh oh. i kinda decided to keep her after a bunch of disappointing responses. We can talk I suppose.
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Cream8
Ashes to ashes, dust to dust. Don't even bother, and it ain't just the rust...
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Rear Brake Line Rubbing Against Drive Shaft
It would have been more usefull had I posted the F/R lengths, but I don't know them off hand.... Not in a place I can measure them right now..
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Rear Brake Line Rubbing Against Drive Shaft
The stock rubber lines are longer on the rear than on the fronts, maybe you got a set of fronts by accident.
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Too early. Hell's freezing over.
Hmmmm, +50 F here in the great white north. My igloo is melting! Sorry to rub this in.
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Did '73 240z's ever come from the factory with round tops?
Ask member @Zupabout restoring a '73 with flat tops "properly". Carefully sole search your desire to have a totally original '73 restoration before continuing. The issue used to be the difficultly of restoring the flat tops to original like new condition, but rebuild kits have recently been found and returned to the market making it "possible". Tuned and in-spec these carbs are 'better" than round tops !! (sorry, couldn't resist... please don't fill this guys thread with rebuttles... ) PS, if you need some, I might have kept a few....
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Automatic Conversion
Great write up David. I'll mention here that the hardline length is nearly exactly 53 inches from flare to flare. In case you need to make one. I just measured a stock one I pulled from a 73. Since the auto cars don't have the spot welded on bracket on the frame rail where it meets the softline over to the slave, there some "error" there that you can compensate for pretty easily if you don't get it exactly the right shape on the way over. The clutch pedal stop absence is a little considered but very good point. Seems like a poor idea to force the master to hit it's internal stops. Life shortener? That said, I don't know if anyone has ever reported a problem related directly to this.
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510 Su's
Here are a few more pics of the air manifolds that connect the idle speed and idle mix plumbing. The bowl vents also have their own tube on the manifold. They join and come to the outlet that is sticking straight up. You need to connect that to the air cleaner to put the correct reference pressure above the fuel in the bowl. The large (9/16) ports that point toward each other are the idle mix that are not hooked up yet. A fresh air line, again from the air cleaner, feeds the upper large port, which then goes past the orifice screw, then down to that carb and over to the other. The smaller inlets are the idle speed bypass that are connected to the tube manifold, then runs into another adjustable orifice screw that feeds into the balance tube.
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510 Su's
These carbs are quite advanced, carb wise. They have two "new" circuits compared to what we Z folks know about our "Round top SU's";one for idle speed control, and one for idle mixture adjustment. I guess technically they're overall design to improve mixtures throughout the operational range,, which affects the cars overall contribution to "smog", but none of this "stuff" detracts from performance. Quite the opposite. . These carbs have holes drilled into the throats in a very specific spot that connect the thoat to the outside world. AFTER the bridge where fuel is added, but BEFORE the throttle plates. Why? Well first, to provide an idle bypass circuit. Instead of opening the throttle plates to let some air/fuel into the engine to set idle speed, we leave the throttle plates closed, and provide a separate path, with an adjustable orfice screw, into the intake manifold to control idle speed. Gee doesn't the later and "better" EFI systems use this technique? Yup.. Who did it first? Well.... Further we can another feature where we can control the idle mixture. How? By adding additional air into the new idle mixture path. This will only lean out that mixture, so to control the AFR of this idle mixture we must design the needle diameters in the idle range to be "rich" then adjust it to what we want by adding air. Slick, huh? So yes, I will be hooking up these circuits on the 510. Maybe even add a idle air control valve so I get fast idle that decreases as the car warms up just like EFI. Imagine that. It will be about as close to EFI as carbs can come. BTW, those crappy flat top 73/74 boat anchors that are the butt of our collective scorn, do these same cool tricks, plus more.... (I always cheer for the underdog )
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510 Su's
I'm working on a set of SSS 38mm carbs from Z Therapy for my 510 project. These even have air bypass idle control and idle mixture control. Pretty advanced for the day. The flat tops in this case have no resemblance to the 73-74 Z carbs. Other than the air by pass hardware, they are just round tops with, well, flat tops....
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Impact rail inside doors
The difference in actual safety to the occupants with any of the S30 doors, is SO much less than any comparable, modern door, that it is not worth worrying about if you have the "best" doors or not. Any car of this vintage requires that do all you can to actively practice defensive driving techniques at all times to avoid any form of accident in the first place.
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Automatic Conversion
I believe there is wiring that goes to the console auto shifter mechanism as a "park" or "Neutral" indicator switch of some sort? Or lighting in the shifter housing so you can see where it's set at night? Or to the kick down solenoid? You can tell I've had a lot of auto Z's....
- 14x6 Rims
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WTB Datsun 510 emblem
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WTB Datsun 510 emblem
You're looking for the "DATSUN" script that goes on the trunk, right side? Can you send me a picture of it? THere are some differences in the years.
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240z Door Hinge Rebuild
Always to nice see a DIY solution. Great work. You know, that spring really really looks like an inner valve spring.... hmmmm....