Everything posted by zKars
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Getting Autographs
The difference is in what the autograph means to you. A painting is more valuable if its signed by its creator. Even better if the creator is famous. I feel the same way about my Z. It is much more meaningful to me that Mr. M's signature is "on" my glovebox door, rather than on a piece of paper in the glovebox.
- Fuel Sump w/o baffel?????
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bought a 71 datsun 240z and i dont know anything about carbs
Arne, thanks for the clarification. All 260's were flat top carbed. No FI. thanks!
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bought a 71 datsun 240z and i dont know anything about carbs
There were two different 260's in North Am. Early one with flat top carbs like 73 240 (though not identical), skinny bumpers with hydraulic shocks, and then a later one with FI like 280 and bumpers like the 75 280. The interiors for both were the new 280 style dash and console. Real Heinz 57.... No wonder folks restoring 260's have a devil of time finding parts for them! Nice Z BTW. I like the red wire that comes through the firewall at the choke cable grommet and goes to the coil best. I'm pretty that's not stock... and worth understanding what it bypasses (like the ignition switch....).
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ShIft knob won't come off.
Is there a hex nut at the base of the knob? There may be a locking nut on there that has to be loosened first. If not then I'm betting the knob is not stock, and since the threads where not right, someone PO glued it on... No easy way to get that off... Worst comes to worst, remove the shifter shaft from the tranny, (remove console and rubber boots, you'll see how to get it off, its just a pin) get a new shifter and knob. Hopefully the current knob will pass through the leather boot on the console and make this easier. Good luck!
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Bad Fuel Pressure Regulator?
Just sounds like you don't have a properly functioning cold enrichment (choke) system. The simple fact that it runs better after its warm fits that diagnosis. You have SU's on that beast, don't you? If not, let us know what type of fuel system you have. To check fuel pressure, just put a gauge in the line after the reg and before the carbs and see what its doing during startup and while running. Carb systems don't typically keep much in the way of pressure, but rely on what's in the float bowl to get you started, then by the time that's used up, the pump should be adding fuel to the bowls if there wasn't any residual pressure. Let us know what you find
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Door Glass Rollers/Bumpers
Carl, if the front of your glass angles up and forward and the back of your glass goes straight up then your glass must have elastic properties that most of us don't have on our cars. The entire door glass advances from back to front as the window is raised, so if you had both rollers, they both need to be angled in the same orientation. The rollars are a convex barrel shape and have one point of contact with the glass, so using them on the "wrong" side still works surprisingly well. 77-78 door glass rides in a pair of curved rigid channels in a totally different way from earlier glass. As a result they may not need the guide rollers as much for support. The fiche does not show a date range for their use, so they likely are used on all years. If your door has the cutouts where they fit, then they are likely designed to use them regardless of year.
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Rust underneath battery tray
Getting all that rust sealed is critical or you're just band-aiding and all your work you're doing now will soon be wasted when the rust comes back again. Short of sand blasting with a flexible hose held under the tray to completely strip it, there is no way you will clean it properly without removing it. If the underside of the tray is nasty, then the areas between the tray flanges and fenderwell at the spot weld areas are also nasty, which you can't get to without removing the tray (spot weld drilling). I know its hard to judge just how bad this is, but I've seen too many that were far worse than externally visible, including what happens below the tray into the frame rail and firewall. Until you've thoroughly stripped the area, its not possible tell the true extent of the damage. Its better and easier with everything out to fix this properly now than later. Been there done that. I've erred too many times with this issue on the side of "oh its just surface rust" that came back to bite me. Sorry for taking the hard line on this, but "do it right" has to win in this case. You're car is too nice to just patch over the rust.
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removing 280z headlight case
Great advice jfa! Those phillips headed bolts are no treat to remove the if they haven't been out for a while. Vise grips may be necessary. Replace them with hex head bolts for next time (5 x 0.8mm 15-20 mm long bolts) I've even gone as far as replacing the top two bolts with studs (cut head off of two 5x0.8mm bolts) so its easy to hang the assembly on them to help get the lower two bolts aligned. Something about a dark awkward space and old eyes.... Says alot about how often I take my car apart too... Or the quality of the H4 bulbs I buy... Always seem to be changing them in Hotel parking lots on long trips....
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Refacing rockers and checking wipe pattern
Delta Cams (deltacam.com) does rocker re-surfacing very reasonably. Not sure about shim suppliers.
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Door interchangeability
76 doors do NOT fit on 77-78 cars. The latches are totally different. They are the same shape, hinges mount, but it can't mate up with your striker. When you go see it, you'll notice the difference. There were several recent posts about this read them again. Just past thru Vernal last week on our way back from zcon. Felt at home in nice oil patch business everywhere driven town... No place to stay, all hotels were booked, had to carry on up to Rock Springs Wy. Patch must be doing well!
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Rear License Plate Bolt Size
I'm using 6x1.00 mm bolts with integrated washers. They are about 15mm long.
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Oxygen Sensor In Cast Iron Exhaust Manifold
Thats right, 280 no, 280zx yes. The O2 Bung on the turbo is not on the exhaust manifold, but on the cast iron down pipe which is immediately after the turbo. The turbo is bolted to a 4 bolt flange cast into the exhaust manifold, which is nothing like a 240-280 manifold other than at the head flange. Using a 81 and up NA exhaust manifold would give you the 02 outlet on the manifold. That said, 02 weld on bungs are available at any speed shop or online. Weld it into your header collector, or if you go stock, put it in the exhaust pipe right when all the down pipes finally end up as one pipe just past the Y. Cast iron manifold on a mostly stock engine is just fine, and much quieter in the engine bay and cabin, if that's your thing. Good luck.
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Oxygen Sensor In Cast Iron Exhaust Manifold
81-83 280zx turbo's have an O2 bung in the cast iron down pipe out of the turbo. I think starting in 80 or 81 the NA engines had one too. The 81 FSM EF-43 shows its location.
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Oil Pressure Sender
BSPT. There was a semi recent discussion about this and the source for adapters. Some, including me, would argue no "need" for correct adapters. I ran an 1/8 NPT tap into the oil sender port, added my NPT "T" (using an oil pressure safety switch along side sender) and never looked back. Stock oil sender threads happily and leak free into NPT as well. I've had mine this way for years and years with 0 leaks. Same for the water temp ports on the thermostat housing, except 1/4 or 3/8 NPT depending..
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My Vintage Rallies Texas 1000 Thread
I've hauled a Z or two on a U-haul trailer. None had spooks, but the approach angle seemed pretty low. Jack up the trailer hitch as much as you can to lower the tail. In the worst case, nothing says you can't back it on the trailer! Might be best from the prevent rock spray on the pretty front end point of view. Happy hauling!
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Innermost Shifter Boot - Any Clamps Holding In Place?
No clamps. There is a lip on the trans that it fits over. Fun to install, an exercise in strong finger manipulation and stretching in an awkward spot.
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Differences between 2+2 and 2 seater suspension
Chuck is correct. Same same. There is no left and right, same part, just flipped.
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Brakes slowly lock up after driving 10 miles
Still have the push rod length too long me thinks. Might want to check out this thread on Hybridz. http://forums.hybridz.org/index.php/topic/102754-a-one-inch-diameter-brake-master-cylinder-for-the-s30-z-cars/ It has a section on properly setting the length of the push rod. At the bottom of post #1 is a link that contains an excellent article on the subject. Definitely worth reading. Other than that its the master itself that may be bad.
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Tired of tuning,tweaking,torqueing,wrenching---JUST DRIVE!
Nice. Now I REALLY want to work all afternoon....
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Temp sensor wire
http://www.vintageconnections.com/ Click on the "Place an order" link, then scroll down to "section 2". I believe you need their3.8 mm barrel connector part SS2. Get their RTL crimping tool as well. Great qualiy and reasonably priced at $39.
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Did jay spill the beans?
"got to tour the design studios and maybe take a guess at what the new 240z might look like...." Holy $hit batman!!!
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Overheating
This requires taking the water pump off, but defintely needs to be checked. The condition of the cavity on the front cover where the pump vanes fit is critical to the pump efficiency. If there is any wear from a previously loose water pump vanes rubbing or cavitation damage to that area (looks like poc marks) the pump is simply not putting out the volume it needs to. Was the cause of my issues some years ago.
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Electrical issue on 73 240Z Help please
The FSM for a 73 can be found at xenons30.com under the reference link. Haynes diagrams are rarely complete and representative of all teh changes. Every year the electrical changed in a significant way. Looking at the "Body Electrical" document, Page BE-2 that manual has a diagram of all the "stuff" in the engine bay. Sounds like that relay is #18, the Throttle opener relay, Manual trans only. The six wire relay on your other car might be an automatic, ie part #17, seat belt relay. BE-5 has the whole schematic, it looks like the BW wire goes directly to the ignition switch, and as such if the relay of blown, may be cause of your problem. Check all the fuses and the fusible link. Try removing/unplugging the relay and see if that helps. Its not critical to operation. In any event, it can very likely be replaced with a standard Bosch type relay. Its a simple two terminal coil and two terminal switch function. Unfortunately the schematic does not have the wire colors other than the BW and GB so it will take a bit of sleuthing. Good luck Oh and what does it do? Seems a speedo sensor turns on this relay, which accuates a vacuum device which likely opens the "throttle" more.. Don't ask me why... I bet its emmision related.
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Picked up a granite surface plate tonight.
Excellent sleuthing Blue! You can either spray glue various grades of sand paper to it or use this system of abrasive particles as the lapping media like these http://www.leevalley.com/en/wood/page.aspx?p=33017&cat=1,43072 I wonder just how flat that granite really is?