Someone far more qualified than me will be along to answer your other questions but the below from Keith Calver may help re dash pot oil:
https://www.calverst...bs-dashpot-oil/
1275 Carb Cooper Poor Starting.
Started by
Timmyquick
, Feb 06 2022 02:12 PM
24 replies to this topic
#17
cal844
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Posted 07 February 2022 - 05:32 PM
Your car from the factory would have used 20w50 oil in the dashpot
#18
D 'n A
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Posted 07 February 2022 - 09:39 PM
Concerning the dashpot oil, I think the best advice is to see what your engine likes by trial and error.
In my eye's the UK is full of companies with rolling roads and lots of experience on Mini's. I bet good ones can also see what oil suits your setup best.
Glad you found out what was wrong.
#19
Timmyquick
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Posted 07 February 2022 - 09:54 PM
Thanks for help everyone.
I will get back to doing bodywork and interior and get it on the road. This year hopefully.
I will get back to doing bodywork and interior and get it on the road. This year hopefully.
#20
alex-95
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Posted 08 February 2022 - 08:05 PM
As said above, there is no oil that is perfect for every carb, My carb has ATF in it which is very thin. Have a look at AC Dodds Video here (layshaft weighs 1.4KG, from top to bottom it should take about 4 seconds to drop.)
Edited by alex-95, 13 February 2022 - 07:47 PM.
#21
Timmyquick
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Posted 12 February 2022 - 06:17 PM
That's a good video, will be trying that in the future.
#22
bpirie1000
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Posted 13 February 2022 - 07:51 AM
Abit much that you have to take your gearbox apart to fix your carb....
#23
Tornado99
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Posted 13 February 2022 - 05:52 PM
Seems he could have been much more helpful to just give us a weight of the Layshaft so to save us from taking gb apart to check our carbsAbit much that you have to take your gearbox apart to fix your carb....
#24
alex-95
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Posted 13 February 2022 - 07:47 PM
Seems he could have been much more helpful to just give us a weight of the Layshaft so to save us from taking gb apart to check our carbsAbit much that you have to take your gearbox apart to fix your carb....
If you haven't clicked the youtube link the layshaft weighs 1.4kg 
Edited by alex-95, 13 February 2022 - 07:47 PM.
#25
Tornado99
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Posted 13 February 2022 - 10:04 PM
Seems he could have been much more helpful to just give us a weight of the Layshaft so to save us from taking gb apart to check our carbsAbit much that you have to take your gearbox apart to fix your carb....
If you haven't clicked the youtube link the layshaft weighs 1.4kg
Yes I watch the viddy but he didn't state the weight. Is it in the text section?
Anyway, we still don't know why this specific weight should be considered correct for timing the dampner speed. I would think this depends bigly on the specifics of the setup, single/dual carbs; engine displacement; needle profiles and carb type/size(s).
Edited by Tornado99, 13 February 2022 - 10:04 PM.
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