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ZigzagZ

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About ZigzagZ

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    Sacramento

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  1. Ah I see, it appears it has been reground. I took some crude measurements with an analog caliper yesterday and I measured the following: The intake base circle and overall lobe were 30mm and 38mm respectively and the exhaust were 30.5mm and 39mm. My measurements are probably a half mm off but with that the lobe lift would be about 8mm on intake and 8.5mm on exhaust. With that, I think I'll set the lashes to about stock as you said and adjust if I notice anything odd.
  2. You guys are right about the units, I had them mixed up. My measurements were actually inches, not mm. The unit labeling on the gauges are a bit confusing but I see where I misread it. I added a few photos of the cam and lashes. All the contact patches on the lash pads are pretty even and seem to be a healthy distance from the edge. You can see a few of them if you look closely at the picture with the 'E30' side of the cam.
  3. Now is there any relation to the ratio of exhaust/intake clearance? Say the PO wanted a tight intake lash but left exhaust near stock sizes. Does having a clearance difference for intake/exhaust of greater than .002mm have any side effects?
  4. I finally got the chance to take off the valve cover and check the valve lash clearances and I noticed a strange consistency with my measurements. I have measured every exhaust valve clearance to be exactly .009mm and every intake valve clearance was between .004-.006mm except for one. The one valve was too tight for the smallest feeler gauge which was .004. To measure, I used a feeler gauge to feel for the highest gauge where it could slide between the cam and the lash pad while the lobes were facing straight up. This was also done with a cold engine. Now, I know the
  5. Yeah... the door may be a bit worrisome. It needs a decent shove to get it to shut completely. The chrome on the door window gets pretty snug with the chrome on the side window. By pinched to the door frame, I mean it will sometimes not sit flush at the top unless closed a certain way, if that makes sense. As if the door is mounted just slightly too high. The current owner claims the PO removed the door to repaint it and didn't assemble it correctly. I usually check the typical areas for rust. The rear rockers had some bubbled up areas but no holes. Hatch channels looked great and
  6. Thanks for the pics and message. Did you use the Z Car Depo style sheetmetal or did you have a shop custom fab the metal? I may do just what you did and look into having a shop upgrade it for higher performance. The only thing I'm concerned about is the drivers side frame rail is rusted as in my pics and the drivers side door just barely not aligning. It can be tough to close and the top of the window gets pinched to the door frame, presumably from the frame causing the body to bend in a bit.
  7. I totally understand. I've been doing a bit of research on and off for the past 4 years or so. I'm ready to do some work but nothing as serious as having to cut and weld new frame rails as well as god knows what else goes bad. I'm out in CA so I've been keeping my eyes out for low rust examples but most at least have some. I expect to drop 8-10k on one and spend at least another 10k over time getting it into the condition I'm satisfied with
  8. Cross-post from Fabrication/Welding. I'm looking at buying this '75 280z. The biggest downside is one of the frame rails has abut an 18" stretch of chewed out metal. Here's what it looks like https://imgur.com/a/TkbKOEo. Are the rails too banged up and rusted to be repaired? And would repairing them bee too costly? Currently the owner is asking 8500 for the car. The only other rust is a little bit in the upper part of the passenger footwell/firewall
  9. I'm looking at buying this '75 280z. The biggest downside is one of the frame rails has abut an 18" stretch of chewed out metal. Here's what it looks like https://imgur.com/a/TkbKOEo. Are the rails too banged up and rusted to be repaired? And would repairing them bee too costly? Currently the owner is asking 8500 for the car. The only other rust is a little bit in the upper part of the passenger footwell/firewall
  10. I'm highly interested in buying this 260z I found on craigslist. There is nearly no rust aside from some surface stuff on the hatches. It's a pretty clean car but there is a big dent on the passenger side fender. The current owner says it was (likely) a parking lot mishap from the previous owner. My question is how much would a replacement passenger side fender cost for a 260z? How much would it cost to replace it? Thanks!
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