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nmehdikh

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Everything posted by nmehdikh

  1. While I've been doing all this work on the car, I've been in contact with Softopz, and he's been making me a megasquirt harness for my needs. He recently sent me work in progress pics, and has been great to deal with. I'd highly recommend him if you are interested in going the megasquirt route. Here is a link to his thread where he sells harnesses.
  2. Car is a 1973 240z with an L26 basket case, with lots of rust and wiring issues. Since my initial question thread started getting offtopic, I figured I would finally start a build thread to expand on my questions, and document my progress so far with the car. Original thread is found HERE Parts are on order and I'm slowly putting together my EFI / ITB setup. I'll post updates and questions here. Since the start of that thread, I've really dug into the car to find terrible rust as expected. So, first order of business was replacing the floors and flame rails. Got floors from zedfindings and rails from baddog. Passenger side before paint. Driver side painted. You can see the rats nest of wiring hanging under the dash. Going to have to clean this all up pretty soon. My car didn't have seatbelts when I bought it, so I also put in a half cage and harnesses. Cage was built and welded in by a local shop. My seats currently sit too high for my liking (and for the harnesses), so I'm either going to get new seats or a build a smaller seat bracket. Also replaced redid the entire braking system with 4 piston discs in the front, converted the rear to disks, and a new master cylinder. I've also replaced most of the suspension bushings, still have a few to do. This weekend I am going to pull the head off to get it rebuilt. Which leads me to my first set of questions. I thought the car just had a stock L26 in it. But now I'm not too sure so I need some help identifying stuff and how to move forward. The block is stamped "L26 086142" and the head is stamped "N42". I previously did a valve adjustment, and I remember checking the cam markings and it had standard mark but now that I realize it has a N42, I'm not sure if it hasn't been reground. There is a isky racing cams sticker on the car window, but who knows if that is just for "show". When I pull the head off, how do I go about identifying the cam? And if it has been reground? How do I check if the head has been shaved? What should I look for inside the motor (should I expect flat top pistons? Or dished? or notched?)? Given that I am going megasquirt EFI with ITBs, what should I have done for the head performance wise? Valve springs? Cam suggestions?
  3. Thanks for the info guys. I appreciate it. This weekend is pretty busy for me so I didn't have much time to work on the car. In the meantime, I finalized the header and intake install and they are on for good. I had to wait for a new gasket that arrived a couple days ago. I also got the thermostat housing on, and the fuel rail and injectors. The throttle bodies are still only on there temporarily.
  4. 240z L28et Overheating

    It looks like it clears an AC pulley, but it seems like it might interfere with the belt / compressor. Hard to tell from the pics.
  5. I got a couple questions for you guys. 1) Since I'm going to be running LS coils, what kind of spark plugs should I run and at what gap? 2) Since I rebuild the head and it has a brand new cam, what break-in procedure do you guys recommend? And what oil should I run during break-in?
  6. 240z L28et Overheating

    Thanks a lot, those pics are very helpful!
  7. Did you also run a vacuum reservoir? Or are you just running the pump to the booster?
  8. 240z L28et Overheating

    It would be great if you can get a pic of the waterpump pulley as well as the AC pulleys. Also if you can, would you be able to measure the thickness of your radiator? I have a similar setup, but slightly different radiator and am curious to see if I could fit the altima fans. Thanks.
  9. Started test fitting stuff to check clearances. Also got the fuel pump installed in the tank this weekend. Next weekend is probably going to be running fuel lines, while still procrastinating the mess that is wiring. I also need to get another set of triumph velocity stacks, because the two sets I have are currently mismatched...
  10. 240z L28et Overheating

    How did you wire up the altima fans exactly? I recall they are a 4 wire plug due to high / low speed settings right? Are you just running high all the time? And how tight is the fan against the motor? How's the clearance for the pulleys and belts?
  11. So, I'm in the middle of converting my car to EFI/ITBs. I have a thread in the project forum. But I had a specific question about tank venting. I'm running THIS tanks inc pump, which has it's own vent opening. I'm trying to get rid of whole evap tank system and trying to figure out what to plug, and what to route where. A post in this thread suggests to only run rear tank pipe to the filler neck, then plug the rest of the tank fittings to get rid of the evap tank. So what do I do here? A : plug all the tank fittings, then run the tanks inc vent to the filler neck? B : plug all the tank fittings except the rear one, run the rear to the filler neck, then vent the tanks inc somewhere else? C : plug all the tank fittings, plug the filler neck fitting, and run the tanks inc vent somewhere else? D : something else that I'm missing? Also, does anyone make a line of fuel safe end caps for the tank openings? or do I have to do a stretch of fuel hose and bolt method?
  12. Fuel tank vent / Evap tank / EFI question

    Car is a 73 240z, sorry forgot to mention it. I'm having trouble understanding why line 8 specifically gets connected to the filler neck. What's its specific purpose? Is it just so when I fill the tank full, the excess goes to the filler neck instead of the vent line? My tanksinc pump sits on the flat portion between line 7 and line 8 if that makes any difference here. My fender vent line is non existent, so I'm trying to figure out another solution. But thanks!
  13. Lowrider's 260z

    Thanks for the pics. I might copy your design for myself in the future if you don't mind.
  14. I'm going to be plugging my old feed, return, and vent holes off the tank and using the stuff from the new pump mount. What are my options for plugging the openings? Are there any fuel safe rubber caps? Or do I have to go with the bolt clamped into a fuel hose method? My datsun's mysterious history continues to baffle me. Started working on installing the fuel pump in the tank today. Cut open the top, cleaned it up etc. Found these guys rattling around inside the tank. No clue where they came from. Any ideas guys?
  15. Yes, its silicone hose, but the fuel injectors are down the line past the hoses and on the manifold flange. Do you think it would still cause problems? Worst case I can always weld it up, the hoses were about $20.
  16. I spent this afternoon in the machine shop making a mount that would let me use existing holes in the triumph throttle bodies. Off of this mount I setup my throttle linkages and idler rod. Here is everything setup with a loose test fit. I still need to work on the sides of the droplink that connect to the triumph cable pull location.
  17. Lowrider's 260z

    I love your front splitter setup. Can you get some more pics of it? I'm trying to figure out how it's mounted underneath the car and where it pivots.
  18. Got the head back on this past weekend. And just picked up the intake manifold from the welders. Next weekend should be test fitting some things and working more on the fuel system and wiring.
  19. I had bought a new set of headers from top end performance, I took them in to be ceramic coated, and got the valve cover redone as well. Finished wrapping the header yesterday afternoon. Need to get proper metal ties for the header wrap. Also pulled the dash today to start on the wiring and vintage air setup. Long road ahead dealing with this rat's nest from the previous owner.
  20. Thanks for the info. One more question, what front strut tower bar is that? And how does it mount to the firewall?
  21. I'm looking to do the same pump, but why did you have to mod the tank? Was it clearance issues on the top of the tank? Or does the pump not reach the bottom of the tank?
  22. You are right about it not needing to be that precise. I CAD-ed them up so I could figure out the spacing of the two sets of ITBs relative to each other, while minimizing the offset of each individual runner. It was to give me a starting point before I start fabbing up the pipework by hand. Got the gas tank out today. Going to clean it out and make sure all the fumes are out before I cut it open next weekend to install the new fuel pump. New camshaft / head parts should be here Tuesday, then I can take the head in to be rebuilt.
  23. The seats were in the car when I bought it, and I agree. While they look great and are very comfortable for street driving, I am definitely going to get a dedicated track seat before taking the car out. I had some free time today so I started CAD-ing up the tubing connections between the intake flange I have and the ITBs. Unfortunately, due to the spacing of the triumph ITBs and the spacing of the intake ports, its damn near impossible to get equal length runners. I need to go talk to some local aluminum tube bending companies and get their input on what's the best way to go about this.
  24. I got two sets of the triumph street triple R or daytona 675 throttle bodies. Here is one of the ebay listings, it even came with fuel rail and injector if you were inclined to use them, but I'm using a manifold flange from Blake Machine thats already set up for EFI. Seemed like going with two sets of 3 throttle bodies would be easier to work with rather than taking a 4 and splitting it in half. As far as fuel, I'm going to be pulling the tank in the near future. Once its out I can decide if it's worth saving or if I'm going to go with a fuel cell. If that tank is in good condition, I'm going to weld some baffles in and refinish the whole thing. Tanks Inc makes a drop in fuel pump with a sump around it, but I think I would still like to put in some more baffles or fuel tank foam.
  25. Jesus. I'm so glad I posted here, you all just saved my ass. Any place you guys recommend instead?
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