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johnc

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Everything posted by johnc

  1. I've dealt with them a bunch over the years and here's what I've learnd: 1. They wait until they get enough parts orders to justify the cost of switching tooling on the stamping machines. Sometimes that's two weeks or ten months. 2. The admin/sales staff really doesn't know what plant operations is doing or planning. 3. The admin/sales staff doesn't know what's been posted on the web site until you remind them and they go look at it. 4. They are pretty much our only source for these replacement panels so be nice to them. MSA, VB, and any other vendor selling replacement panels for the S30 are buying them from Tabco. That includes the rust repair web site listed above and most every eBay seller. 5. When you order stuff, order extra and if you don't need it, put it on eBay.
  2. ERW seamed tubing. .063" wall. Crush bends. Crimped joint fitup (tubes not fsh mouthed, just crimped and pounded into shape). Large joint gaps filled with weld. Joints not welded 360 degrees. Never painted or rust proofed. What you can't see is that the main hoop had 8 crush bends and was made of three peices of tubing butt welded together. The mounting plates are .063" steel sheet and tack welded to the body. Just for the hell of it I hit the driver's side door bar (it was a NHRA style 6 point roll bar) with a 5 lb. sledge hammer and bent it in about 3". This car was raced for a while, somewhere. Luckily it never got in a big wreck.
  3. List how many things are wrong with this section of a roll bar that I cut out of a 240Z.
  4. johnc

    Bad Roll Bar

    From the album: Parts

  5. johnc

    Bad Roll Bar

    From the album: Parts

  6. 225s on an 8" wheel is perfect and that's what I used to race on when my 240Z was running in BSP.
  7. I wish I had kept that car, but at the time I needed to start doing some development work on 350Zs and had just purchased one. Looks like he's done a few updates but I've really suprised the tires are worn out. They were brand new when I sold the car. If you go here you'll see detailed pictures of the car when I sold it: http://www.betamotorsports.com/products/1971240ForSale.html
  8. Use a pilot bit and use lots of cutting fluid/lube. Keep that hole saw cool and don't spin it too fast.
  9. Pad material does transfer to the rotors and a properly bedded racing pad and rotor combination actually has pad material gripping pad material. For the pad material to transfer properly the pads need to be up to temp. I run Hawk DTC70/60 pads on my 350Z all the time. When driving on the street the pads act as grinders cleaning and polishing the surface of the rotors. When I take the 350Z to the track and get the pads up to temp there is a noticable increase in initial bite and overall torque. At the end of the day there is a definate layer of pad material built up on the rotors. For the next day of street driving I need to be careful because the pads bite a lot harder into the rotors. That hard bite goes away once the cold pads have a chance to grind the pad material off the rotors.
  10. johnc

    4" too big?

    One "other" issue regarding dual pipes - its at least 50% heavier then a single pipe and quite often 100% heavier. To me that's enough of a reason to avoid dual pipes.
  11. F= MA has time in the calculation which is not appropriate for this discussion. You should be discussing Loads, not Force.
  12. From a handling perspective a wider front track is better. If you can run 1.25" wide spacers on front a 1" wide spacers on the rear, the car will turn-in and put power down better.
  13. A lot depends on the tire installed on the rim and the particular car everyting is installed on. On my 1970 240Z, 15 x 7 rims with 3.5" of backspace and 225/50-15 street tires had about 1" of clearance to a set of 2.5" coilovers. With 225/50-15 Hoosier A3S03s on 15 x 8 rims with 4" of backspace I had about 1/16" of clearance to those same coilovers. Section width across the same tire size varies by as much as 1" when installed on identical width rims. I know its not supposed to be that way, but in the real world there are a lot of variances.
  14. You are SELLING something. There's nothing wrong with promoting your product. If getting the money is so important, stop whining and make an effort to actually SELL. List the work you've done and the parts you've installed without listing any dollar amounts. List the good things aobut the truck, list the not so good things about the truck. Give potential buyers information so they can make a decision. Be happy and positive when they call. This isn't Field of Dreams: "List it and they will come!"
  15. I checked and the dates on this thread appear correct. Maybe you started a different 3.1 thread and confused the two?
  16. I was impressed as hell with the bicyclist! The bimmer guy was a clown and I was hoping the bus would smack him.
  17. Offest is only useful in calculation backspace. For a 240Z running stock diameter springs you can run a wheel with 3.5" to 3.75" of backspace - assuming your tire sidewall is vertical and not bowed out (tread width wider then rim width). At 4" there's a good change you'll be hitting the springs. So, do the math yourself for positive offset wheels: Backspace = (offset in mm / 25.4) + (wheel width / 2) 16x7+38 = 4.99" of backspace 16x8+38 = 5.49" of backspace 16x7+13 = 4.01" of backspace 16x8+14 = 4.55" of backspace
  18. Please use punctuation in your posts.
  19. Look at the Stroud kit: http://www.stroudsafety.com/Nets.html
  20. Mechanical parking brake caliper: http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_191064_-1?CT=999
  21. Kooneon, I'm confused. You posted in a thread that is over two years old just to flame some folks because you didn't like their two year old reply? Am I missing something here?
  22. Many people confuse shock compression valving with spring rate. A harsh or hard ride on a street car is 99.9% of the time caused by the compression damping on a shock. Turn your KYBs to full soft and see how the car rides.
  23. 8610 has a standard body length of 13.07". Get the Koni Motorsports catalog here: http://www.koni-na.com/pdfcatalogs/KONIMotosportCatalog.pdf Regarding the 80-2065: Don't know but the shock body diameter needs to be 1.70" or less and the shock body length needs to be 12" to 14.5". Ideally it should also have a 6" stroke.
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