A new 74 C3 project to the shed

C3 Specific - Technical and Performance

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Fissan
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Postby Fissan » Wed Jul 30, 2014 1:07 am

Diff reassembled, 25 - 30 in/lb pinion load 0.014" backlash (0.002") more than spec but to get the pattern correct had to go out to that, 0.007" axle clearance to the cross shaft and no pre load spring packs.
Cheers Bruce

If you cant hear it before you see it..It's not loud enough!!

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DOC
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Postby DOC » Wed Jul 30, 2014 6:57 am

Sounds good. you will have ta let us know how it works out.

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Fissan
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Postby Fissan » Wed Jul 30, 2014 5:50 pm

Yeh should be interesting, but may be a while before I know how it has turned out :-x
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

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DOC
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Postby DOC » Wed Jul 30, 2014 7:32 pm

True enough, But I'm not going anywhere! :)

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Fissan
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Postby Fissan » Wed Jul 30, 2014 11:47 pm

Pulled the diff back down again, wasn't happy with the setup :?
Added 0.003" more shims in each side of the clutch packs to tighten them up a bit more.
Had to readjust the axel clearance again only had 0.003" after the extra shims had to sand the retainer clips down and lapped the end of the axles and got the clearance up to 0.008"
Moved 0.004" from one side of the center to the other and reduced the back lash back to 0.011", now with in spec but this dropped the contact area lower on the crown wheel but going by the info I have this is good as it rides up higher under load.
Drilled and tapped a 1/4" drain plug in the underside of the housing
Diff is now all back together and now bolted into the chassis
:-)

Image
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

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DOC
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Postby DOC » Thu Jul 31, 2014 7:01 am

Picky, aren't we? I like the drain hole!

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bfit
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Postby bfit » Thu Jul 31, 2014 3:02 pm

Id be interested how much howl you get with the gear pattern where it is in the photo

whats the other side of the tooth pattern look like

I concentrate more on the over run pattern and see when the driven side works out to be
then adjust to suit
Bfit

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Fissan
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Postby Fissan » Mon Sep 01, 2014 11:52 pm

Got some more powder coating done today, front spindles, backing plates f&r, steering arms, rear wheel bearing housings and some other bits and pieces. Next job to fire up my big oven and cook the trailing arms, tail and 1/2 shafts and air cleaner.
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

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Ollie68
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Postby Ollie68 » Sun Oct 12, 2014 9:56 pm

Hi Bruce,

Dunno how you went with a rad support but I come across this one on Gumtree ?
http://www.gumtree.com.au/s-ad/berkeley-vale/auto-body-parts/corvette-chev-radiator-support-n-o-s/1056681460

:D
Ollie

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Fissan
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Postby Fissan » Sat Feb 14, 2015 1:55 am

:shock:
Decided to get out and do some work on the vertable, have a day tomorrow with the sand blaster and powder coating gun so I can put the rear end back in and get the chassis back on it's wheels.
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

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Fissan
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Postby Fissan » Sun Feb 15, 2015 2:10 am

Got cracking today and got the powder coating done
Image

Image

Installed the new bush's and was getting ready to start assembling the spindles and found the local bearing supplier sent me hw series bearing instead of just W series :x-
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

Bazzas77
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Postby Bazzas77 » Sun Feb 15, 2015 8:19 am

They look really good :o
Bad luck about the bearings but I reckon its typical of the quality of service thats around nowdays.

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Fissan
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Re: A new 74 C3 project to the shed

Postby Fissan » Sat Aug 29, 2015 12:49 pm

Have finally got around to doing some work on the rear end and finished assembling the trailing arms and installing them, just trying now to find where I have stashed all my parts I have taken off ::
Found out that the yolk on the 1/2 shaft that bolts to the axle are flimsy and distort easy when putting in the uni's and had to put them in the press to straighten while I was putting the uni's in them, doing this keeps the flange face flat and the uni bores in line.
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

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DOC
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Re: A new 74 C3 project to the shed

Postby DOC » Sat Aug 29, 2015 3:33 pm

Yes they are flimsy, I bent one awhile back as well. They sell a tool to bolt them to when changing U joints.
but it sounds like you have it all sorted.

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Fissan
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Re: A new 74 C3 project to the shed

Postby Fissan » Sun Aug 30, 2015 12:54 pm

Cheers for the heads up about the tool may have to think about getting one seeing I have two of these cars and there are a few of us in the Rockingham area
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

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Fissan
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Re: A new 74 C3 project to the shed

Postby Fissan » Thu Feb 18, 2016 12:02 am

A new year in and finaly have the chassis on top of the hoist and the body and dolly on the ground under the hoist.
Started on the fiberglass repairs in the engine bay and getting rid of all the extra wires that have been run for something ::
on the upside I took the seats out tonight and found out that the carpets are near new :shock:
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

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DOC
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Re: A new 74 C3 project to the shed

Postby DOC » Tue Feb 23, 2016 6:44 pm

New Carpet is a good thing!

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Fissan
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Re: A new 74 C3 project to the shed

Postby Fissan » Sat Feb 27, 2016 12:44 am

Hi Everybody
Has anyone had experience with the aftermarket/replacement wiring harnesses?
Just weighing up weather to replace or repair what I have now that I can get to it easily and replace some of the Bubba Gump patch work ::
Anyone out there got a non air con heater box out lurking in the back of the shed, I want to get rid of the air con in the convertible and it would look neater without the big bulkie aircon heater box.
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!

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riverracer
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Re: A new 74 C3 project to the shed

Postby riverracer » Sat Feb 27, 2016 12:58 pm

i have replaced my ign, lamp and AC harnesses when i did my engine bay 2yrs ago.
i bought mine thru Willcox on one of their big sales.
they are the "Lectric Limited" brand, perfect in every way for plug n play fit and build quality.
also have a power window harness ready to go in at some stage as well in my spares box.

at the time mine were 42yrs old, few cut n shuts, not very pretty looking in a refurbished engine compartment.
the copper wire was a green/black colour, meaning very high resistance, chance of more heat, more chance of fire etc...

might be a cost up front now, but worth it in the end.
Speed has never killed anyone,
Suddenly becoming stationary that's what gets you.

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Fissan
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Re: A new 74 C3 project to the shed

Postby Fissan » Sat Feb 27, 2016 5:14 pm

I was thinking along the lines of replace over repair due to being more cost effective and I would be able to spend my time on bodywork.
Cheers Bruce



If you cant hear it before you see it..It's not loud enough!!


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