Author Topic: #460002 - Restoration  (Read 65864 times)

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Offline Serge

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Re: #460002 - Restoration
« Reply #60 on: Thursday,October 02, 2014, 04:00:04 AM »
Thanks, BDA!

The last video in the series on the front suspension. Glad I've finally edited it all. Next up will be the rebuild of the front calipers.


https://www.youtube.com/watch?v=oXZH_XUzJu8


Serge

Offline BDA

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Re: #460002 - Restoration
« Reply #61 on: Thursday,October 02, 2014, 06:47:45 AM »
Another great video, Serge! Good that you mentioned the big washers to keep the bushing from getting pushed out of the A-arm pieces. That happened to me!

With regard to lubing the trunnions. There has been some discussion about using grease vs oil on the yahoo group. I would say that although the manual specifies 90 wt gear oil for the trunnions, that moly grease is better in this application. I have a friend who worked at Shell Oil for twenty five years and although he didn't work with formulating or testing oils and greases, (he did work several years at a grease plant that at the time made half the grease in the world!) he kept up with it pretty closely so he is the guy I go to with most lube issues. I asked him for his advice for lubricating the trunnions and here's what he told me:

Quote
First things first: Use a lithium 2 hydroxystearate grease with moly in it.  Virtually all modern greases with moly are lithium 2 hydroxystearate, so if you get a good moly it will work just fine. Moly is important for your application because it is the ideal lube for sliding friction.  Grade 2 grease outperforms 90W gear oil in every respect since it has low shear, high film strength, and won't seep away over time (plus it works in grease guns).

All of that isn't to say that gear oil is wrong - that's what's in the workshop manual! - but that moly grease should provide better lubrication in this application. It also would not surprise me to find that the manuals predate the availability of moly grease!

Anyway, thanks again for a great video. If you continue with them, it will make it easier for the next restorer!

Offline Serge

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Re: #460002 - Restoration
« Reply #62 on: Wednesday,October 15, 2014, 02:49:14 PM »
New blogpost!

Restoration of the front calipers!

From this:



To this:



Link:
http://sleurs-motorsport.com/?p=1357


Enjoy!

Serge

Offline BDA

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Re: #460002 - Restoration
« Reply #63 on: Wednesday,October 15, 2014, 08:22:26 PM »
Fabulous write-up, Serge!!! I was going to attempt a similar rebuild when I started on my car many years ago but ended up getting Richard's vented front disc kit so I didn't need to. I may give it a try so I can sell them and your experience will be very useful! Thanks!

Offline LotusJoe

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Re: #460002 - Restoration
« Reply #64 on: Wednesday,October 15, 2014, 08:42:11 PM »
Serge,
Great job!! I would have just thrown those old calipers in the trash. Good save  :beerchug:
Joe Irwin
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(The Classic Barn Find)


Offline Bainford

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Re: #460002 - Restoration
« Reply #65 on: Thursday,October 16, 2014, 05:12:33 AM »
Wow! Great save. Nice work Serge.
The Twin Cam plays the symphony whilst my right foot conducts the orchestra. At 3800 rpm the Mad Pipe Organ joins in.

Trevor

Offline Grumblebuns

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Re: #460002 - Restoration
« Reply #66 on: Thursday,October 16, 2014, 10:45:53 AM »
Very helpful write up. When I did my caliper rebuild awhile back, I elected not to split my calipers. That probably made the job doubly difficult but was achievable. The hardest part was getting the old pistons out. Three of the four came out with compressed air, the fourth was stuck pretty bad. I first tried one of those brake piston removal tools. I could get the piston to rotate a couple of degrees in the bore but did not have enough leverage to pull it out. I finally had to resort to using the front brake hydraulics to push the piston out.

For my next caliper rebuild, I'll have to find some of that brake grease to protect the bore and piston from corrosion.

Joji Tokumoto
Fallbrook, Ca   

Offline Serge

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Re: #460002 - Restoration
« Reply #67 on: Monday,October 20, 2014, 02:55:59 PM »

Offline BDA

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Re: #460002 - Restoration
« Reply #68 on: Monday,October 20, 2014, 03:14:34 PM »
That's wonderful!!! You are getting the recognition you deserve!  :trophy:  :beerchug:

Offline LotusJoe

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Re: #460002 - Restoration
« Reply #69 on: Monday,October 20, 2014, 08:05:33 PM »
 :trophy:
Joe Irwin
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(The Classic Barn Find)


Offline Serge

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Re: #460002 - Restoration
« Reply #70 on: Tuesday,January 27, 2015, 09:32:28 AM »
I've finally found some time to edit another video!



In this video I'll show you how to bring a set of Girling 14LF calipers back from the dead. These were very rusty and I was doubtful if they could be saved, but they look near perfect when I was done with them. These are the original 1967 calipers that were on the car since it was new.

Link:
https://www.youtube.com/watch?v=UUJuW6Ho2LY

Enjoy!

Offline BDA

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Re: #460002 - Restoration
« Reply #71 on: Tuesday,January 27, 2015, 11:26:00 AM »
Another great video, Serge!! I did note that you said you used POR15 but the can said POR 20!  :)

Hopefully, when they get hot, the bubbles won't return.

Thanks for the great how-to for restoring brake calipers. Well done!

Offline Serge

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Re: #460002 - Restoration
« Reply #72 on: Tuesday,January 27, 2015, 11:49:05 AM »
Good eye, BDA! The POR20 is the heat resistant version of the POR15, but I'm not impressed. I do fear the bubbles coming back. If so, I'll paint them with something else, or have them zinc plated.


Serge

Offline Serge

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Re: #460002 - Restoration
« Reply #73 on: Saturday,January 31, 2015, 08:30:42 AM »



I've written a quick blog post and added +/- 20 pictures about the 'competition' radius arm mounts that I built last year.

They replace the original rubber mounts with a spherical bearing.

http://sleurs-motorsport.com/?p=1417


Enjoy!

Serge

Offline BDA

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Re: #460002 - Restoration
« Reply #74 on: Saturday,January 31, 2015, 08:57:00 AM »
Great write up and great modification! The way Lotus designed that joint always seemed shoddy to me. This is a big improvement!