Reconstituting Old Rubber Parts for your carbs.
- otakar
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Some of the guys around laugh at me that I like to Blow Up things with my Chemicals. :blush: OK maybe sometimes things don't go quite as planed. (fortunately I haven't destroyed anything yet on any of my bikes) About a week ago there was a very nice post here about new rubber diaphragms for carburetor slides.
kzrider.com/index.php?option=com_kunena&...ew&catid=3&id=375201
In the time of this thread, I have discovered that I had a bunch of unusable slides because the rubber shrunk with age. At this point the diaphragms would not fit in the prescribed groves because of severe shrinkage. As demonstrated by this picture. The shrinkage is a good 5+%, rendering the slides JUNK.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- otakar
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74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- otakar
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74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- otakar
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74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- MFolks
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Successfully Resurrecting Old Rubber Parts
(Found on the internet)
This subject has been broached before but I am happy to report success in revitalizing old rubber.
I have been using a mixture of 30% wintergreen oil (methyl salicylate) and 70% xylene to restore old rubber parts and it works beautifully. This is the same ingredients and proportions for the commercial product Rubber Renue according to the MSDS sheets.
Wintergreen oil is analgesic and liniment for aching muscles and found in most drugstores, pharmacies, health food stores and co-ops.
I gently heated rock hard honda CB carb boots with a heat gun for 30 seconds and dropped them into mason jars with my solution for 12 hours at room temperature. They come soft, pliable and looking good. They have been out of solution for 48 hours now and are still soft and pliable. I soaked smaller rubber parts such as side panel grommets and there extremely soft and may need to soak for less time
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- otakar
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Obviously this process will not help rubber that already has holes in it due to cracking, but it can bring to life any rubber that is still solid.
I will now also try this process on plastic used in the airbox boots, but I am confident that the results will be equally good.
If any one is interested you can PM me.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- hocbj23
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- otakar
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74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- bountyhunter
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Yeah, thats the stuff we used on old tape deck drive belts and idler wheels. As I recall, it was a temporary perk up and did not last very long.Another chemical formulation for rubber restoration:
Successfully Resurrecting Old Rubber Parts
(Found on the internet)
This subject has been broached before but I am happy to report success in revitalizing old rubber.
I have been using a mixture of 30% wintergreen oil (methyl salicylate) and 70% xylene to restore old rubber parts and it works beautifully. This is the same ingredients and proportions for the commercial product Rubber Renue according to the MSDS sheets.
1979 KZ-750 Twin
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- otakar
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MFolks wrote:
Yeah, thats the stuff we used on old tape deck drive belts and idler wheels. As I recall, it was a temporary perk up and did not last very long.Another chemical formulation for rubber restoration:
Successfully Resurrecting Old Rubber Parts
(Found on the internet)
This subject has been broached before but I am happy to report success in revitalizing old rubber.
I have been using a mixture of 30% wintergreen oil (methyl salicylate) and 70% xylene to restore old rubber parts and it works beautifully. This is the same ingredients and proportions for the commercial product Rubber Renue according to the MSDS sheets.
Xylene will definitely swell rubber, but once it drys back out you are worse off than you were. I found some polymers which last almost as long as the original latex polymers that are in the original product.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- bountyhunter
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bountyhunter wrote:
MFolks wrote:
Yeah, thats the stuff we used on old tape deck drive belts and idler wheels. As I recall, it was a temporary perk up and did not last very long.Another chemical formulation for rubber restoration:
Successfully Resurrecting Old Rubber Parts
(Found on the internet)
This subject has been broached before but I am happy to report success in revitalizing old rubber.
I have been using a mixture of 30% wintergreen oil (methyl salicylate) and 70% xylene to restore old rubber parts and it works beautifully. This is the same ingredients and proportions for the commercial product Rubber Renue according to the MSDS sheets.
Xylene will definitely swell rubber, but once it drys back out you are worse off than you were. I found some polymers which last almost as long as the original latex polymers that are in the original product.
Interesting. That would be the rubber fountain of youth if it can penetrate deeply and get through all the oxidized rubber.
1979 KZ-750 Twin
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- otakar
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74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.