The Bronze - '69er Resto Project and continuing build-up.

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nickedwards
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Post by nickedwards » 23 Dec 2007 08:26

rnorrish wrote:yup. been there, done that. only take a couple minutes, though they would still need to be drilled. and we do flame cut ;)
Flame cut = oxy-acet?
I hate machining flame cut material (I get 1" plates flame cut) so hard :D

Unfortunately the place I go can't laser or plasma that thick :D
1972 510 4 door - 4 spd project

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rnorrish
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Post by rnorrish » 24 Dec 2007 00:14

yeppers. and we don't use acetylene, we use propane. much cleaner.
suck it up. people have been doing it for decades. :P
and if the shop is any good, the heat affected zone should be small.

you could always pay the big bucks and have it water cut...
richard norrish
'68 'goon resto / '71 ice racer / '72 'goon project / '70 4-door rust pile / '67 520 project
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shardik wrote: My swap will be made of solid gold and it will run on puppy farts.

fasteddie
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Post by fasteddie » 30 Dec 2007 16:12

hey byron its ed out in chilliwack you looked at my 68 not to long ago thought i would say hi and wish you a merry christmas still trying to figure out what to do with this 510. your 69 looks good like watching the progress.

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Byron510
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Post by Byron510 » 08 Jan 2008 23:15

Thanks Ed,

I'd love to see your project on here, got a serious soft spot for those 68's.

Byron
Love people and use things,
because the opposite never works.

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Byron510
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On with the brakes

Post by Byron510 » 08 Jan 2008 23:24

Got a chance to finish the adapers to mount my (thanks Mr Vorgon) Willwood calipers on the A510 struts. I chose the A510 struts for the ease of caliper mounting. The 280ZX struts with I had stripped and on hand would require more work.
So here it is...
Attachments
DSCN5601 (Medium).JPG
I bought these Gr8 bolts for their shank length, no bearing load on the threaded section this way. I may use a back up lock nut, but this bolt is threaded into the bracket at this spot.
DSCN5600 (Medium).JPG
Spacing of the claiper is perfectly centered, and with new pads, and the pistons puched all the way back, I still have about 1.5mm (1/16") clearence here to accomidate for the heat in a worst case senario.
DSCN5599 (Medium).JPG
Here is is: A510 sturt (not yet shortened), 280ZX rotor and hub and Willwood caliper with cutom caliper adapter.

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Byron510
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Post by Byron510 » 08 Jan 2008 23:28

more details...
Attachments
DSCN5609 (Medium).JPG
Clearence is minimal! Less than 1/8" here with 13X7 Libra's - no spacers. Couldn''t get a tighter fit!
DSCN5604 (Medium).JPG
The writing lies - I actually had to turn the hub down to 150mm dia at this point to clear the caliper
DSCN5603 (Medium).JPG
This shot shows the caliper mount in side profile, and the 0.065" offset towards the strut where the caliper bolts to the mount.

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Byron510
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Post by Byron510 » 08 Jan 2008 23:30

and more details...
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DSCN5617 (Medium).JPG
The finished mounts after a visit to the bead blaster to remove the mill scale. I did mark the brackets RH/LH - but in reality they are identical units, only flipped over.
DSCN5612 (Medium).JPG
Clearence here was no picnic either - less than 1/8" - no wheel weights here!

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Byron510
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Post by Byron510 » 08 Jan 2008 23:38

And I found time to shorten the struts as well.
Because I'm a machinist, I would never do this any other way...
I used Tokico Illumina adjustable shocks from an MR2. It's a nice compromise between the stock 280ZX length and the really short VW Rabbit length (I've used all of them on different cars now).
I shortened the struts 42mm, but 43mm would be better as the strut nut comes down very close to the tube (next time). I also used the washer that comes with the strut insert, which is just over 2mm thick as well as the MR2 Strut nut (also included).
Byron
Attachments
DSCN5618 (Medium).JPG
A comparison between the stock A510 strut length on the left and the one on the right shortened to use the MR2 insert, just FYI - thought you'd like to see.
DSCN5624 (Medium).JPG
I shortened the struts to include this washer, and strut nut which comes with the new strut insert.
DSCN5621 (Medium).JPG
One strut insert installed, and the strut part number which I know someone will ask for!

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Byron510
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Post by Byron510 » 08 Jan 2008 23:44

more details...
Attachments
DSCN5623 (Medium).JPG
These are the bits that came with the new inserts, strut nut, washer and shock jam lock nut.
DSCN5620 (Medium).JPG
My internal thread (cut on a manual lathe) on the right, the OEM thread on the left.

goichi
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Post by goichi » 09 Jan 2008 00:26

Looks nice, I wanted to do mine that way, no welding right?? I just cut a section out and welded it back together, how hard was that to cut the threads? If you don't mind me asking....thanks, Rich

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Byron510
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Post by Byron510 » 09 Jan 2008 12:13

I machined up a fixture years ago to be able to grab the spindle end of the strut (the early 90’s when I was still an apprentice), and I have a little center machined up to initially line up the strut tube in the rotating center- which allows me to machine a concentric steady rest band; A steady rest is necessary when boring the ID and cutting the threads, since the end of the tube is so far away from the spindle end that is held in the lathe chuck. So I guess it's not much work for me, but that's mainly because I'm tooled up for it - roughly 2 hours to shorten, and re-machine the threads (I'd previously machined off the spring perches and blasted the struts months ago). I can't count how many sets of struts I've modified over the years, this has become a very routine job for me :D
Byron
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because the opposite never works.

jackedaw11
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Post by jackedaw11 » 09 Jan 2008 16:22

Byron that looks like a killer setup!

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Byron510
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Post by Byron510 » 09 Jan 2008 20:34

I was actually suprised at the simplicity of it all.
Unlike most people, I wanted to retain the vintage wheels. I may be forced to run 15" wheels eventually because of lack of rubber available, but at least I'll be able to mount race tires on 13" rims and retain the gearing advantage.
I can't wait to try it all out.
Byron
Love people and use things,
because the opposite never works.

inline4
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Post by inline4 » 09 Jan 2008 22:51

how much for a set of struts shipped to california? :o

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Byron510
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Post by Byron510 » 10 Jan 2008 08:01

If you are serious, I can put a quote together for you.
A stripped strut does not weigh that much...

Byron

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