What did you do to your FB today? - Page 261 - RX7Club.com



What did you do to your FB today?

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Old 04-06-17, 12:15 PM
  #6501
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Normally, rust adds weight, not lightness. You're adding oxygen to the iron after all.
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Old 04-06-17, 01:02 PM
  #6502
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You are correct (and my pile of zinc venturi shavings does get heavier as it oxidizes by probably a few grams, considering the millions of shavings and the high surface area) but I was talking about when the rusted steel starts to flake off. I don't know how rusted your old stuff is but a 20 year old exhaust I bought from a guy for my REPU was flaking a lot. And it was heavy. But either way, if you can weigh them both, it would be pretty cool.
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Old 04-06-17, 07:31 PM
  #6503
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For the record, the new pipe bolted up in exact-fit to where the ancient old midpipe that I bought used from Paul Aber four years ago used to be.

If it is made of stainless steel, it is made of .125" thick stainless steel. Definitely not 16 gauge like I was fearing.

And I welded the O2 bung in at work, and I bolted it on the car, and installed a NEW wideband sensor (the old one was permanently siezed in the midpipe, and also dead), turned the idle screw up a half turn, and fire the car up for the first time in... well, two months. We had a warm winter.

No more exhaust leaks forward of the axle! The exhaust still sounds "sharp" and there's a hole that something poked in the bottom of the muffler shell that I need to address (road debris? who knows) but plugging that with my thumb doesn't change the noise level much.

And as I was doing this the rain turned into snow I still have to do an oil change and some other misc. maintenance stuff before I can drive it, anyway, so I left it there for the day. It's supposed to be in the 30s tomorrow, warmer on Saturday and in the 70s on Sunday, I'll muck with it on the weekend.
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Old 04-08-17, 04:47 PM
  #6504
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Picked up some hard to get parts today.

1. OEM NOS first gen 13B Oil Cooler (1984/1985)
2. OEM NOS Muffler and mid pipes (1979)
3. Racing Beat 1979/1980 brake lines (no longer available)
4. Mold made from dealer installed front spoiler. This mold was made by the the original owner of the 1979 I just purchased. I will be making some new 1979/1980 front spoilers from this mold.


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Old 04-09-17, 01:01 AM
  #6505
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​​​Foxbody adjustable Konis and Landrum 150# springs in the rear. Still piecing together my front coilovers.
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Old 04-09-17, 07:00 AM
  #6506
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[IMG]https://cimg6.ibsrv.net/gimg/www.rx7club.com-vbulletin/2000x1504/80-dscn0502_437321aab25eaeefa2deabd79f243d043ffea1f7. jpg[/IMGstarted running premix

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Old 04-09-17, 11:13 AM
  #6507
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Originally Posted by lwrobins View Post
started running premix
Fixed image
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Old 04-09-17, 11:14 AM
  #6508
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​​​Foxbody adjustable Konis and Landrum 150# springs in the rear. Still piecing together my front coilovers.
What are the yellow straps attached to the shockeye?
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Old 04-09-17, 12:20 PM
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Quote:
Originally Posted by hcaulfield57 View Post
What are the yellow straps attached to the shockeye?
Diy limiting straps for the axle. I was reading about people having shorter springs come off the perch and while I'm sure it won't happen to me this was easy enough to make for just in case.
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Old 04-09-17, 05:19 PM
  #6510
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Starting on the roll cage





also i have slammed the front so far down i will need to seriously modify the front support

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Old 04-09-17, 06:17 PM
  #6511
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Quote:
Originally Posted by klptk View Post
Diy limiting straps for the axle. I was reading about people having shorter springs come off the perch and while I'm sure it won't happen to me this was easy enough to make for just in case.
Interesting. Only place I've seen axle straps before are the OEM ones on an Alfa Romeo Giulia.
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Old 04-20-17, 11:02 PM
  #6512
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Old 04-25-17, 08:29 PM
  #6513
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FC subframe modified and ready for conversion. New mounting points fabricated and added to both the front and rear to shift the subframe c. 20mm further back and sloped down towards the rear to allow fitment to factory chassis mounting points for the 1st gen crossmember and steering box/idler arm, while retaining factory 1st gen axle position and ride height. This solves the geometry issues faced when people simply try to bolt on the subframe. All work performed by ACBron Motorsport who has done this conversion a number of times and perfected it.

Once I dummy fit it all and ensure it works properly, the subframe will be blasted and powdercoated black. Next step, steering column, then ACBron Ultimate adjustable coilovers (custom version with FC struts but 1st gen valving&spring rate and adjustable strut tops), then FD front brake conversion (294mm slotted and dimpled rotors and FD 4 piston calipers).





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