Morris Minor Owners Club

Posted: **Sun Mar 16, 2008 5:29 pm**

does any one know the difference between the bottom trunnions on the marina and minor and are they interchangeable

Posted: **Sun Mar 16, 2008 7:47 pm**

I believe they are not interchangeable - but I too am keen to hear what the differences are! If the 'thread' happened to be the same then possibly any other differences could be overcome.

Posted: **Sun Mar 16, 2008 7:57 pm**

the overall size is the same

i have a marina swivel pin, i will take the discs of and have a look the weekend

Posted: **Sun Mar 16, 2008 9:22 pm**

Do you have one to try out the 'thread' on a Minor kingpin ?

Posted: **Sun Mar 16, 2008 9:44 pm**

i have an old marina kingpin with discs and trunnion on
( did not want to undo it all ) anyway i will have a look this weekend and try a morris one on and vica versa

Posted: **Mon Mar 17, 2008 9:34 am**

maybe a daft comment but why do people not run marina uprights and trunions complete?

Posted: **Mon Mar 17, 2008 6:30 pm**

well i dont know, i will try my marina leg the wekend, but i think it is all to do with the steering arm and top trunnion linkage

Posted: **Tue Mar 18, 2008 7:07 am**

Just had a look at the Marina manual and the setup does look slightly different. There is a bottom trunnion as on the Minor but a ball joint at the top where the lever shocker arm fits directly onto. Also the eyebolt seems to bolt up through the chassis vertically. I guess suspension alignment would be an issue even if it could all be made to fit.
Is anyone still in contact with Owen Burton?

Posted: **Sat Mar 22, 2008 12:10 pm**

Has anyone found out if the Marina lower trunnions will fit Minor uprights ?

Posted: **Sat Mar 22, 2008 3:06 pm**

well just got back from garage and the minor trunnion i had fitted the bottom thread on the marina leg and vica versa but that was what i had in stock

Posted: **Sat Mar 22, 2008 6:08 pm**

Thanks Dennis - and otherwise they look to be the same dimensions? If so - quite a few sets of bottom trunnions on ebay and not expensive!

Posted: **Sat Mar 22, 2008 6:15 pm**

yes bmc they look exactly the same

also the bottom thin wish bone is the same

Posted: **Sat Mar 22, 2008 6:16 pm**

Excellent - thanks again!

Posted: **Sat Mar 29, 2008 4:29 pm**

[quote="aupickup"]well just got back from garage and the minor trunnion i had fitted the bottom thread on the marina leg and vica versa but that was what i had in stock[/quote]
Got any pics aupickup? I just tried a marina trunnion and it was too big for the minor leg, also the geometry looked different. Maybe there are different versions?

Posted: **Sat Mar 29, 2008 5:54 pm**

Maybe but hope not - I won a Marina trunnion on ebay and waiting for it to arrive. maybe van trunnions are different - they used a bigger wheel pcd so may be other differences.

Posted: **Sat Apr 05, 2008 6:42 pm**

Well -my 'marina' trunnion arrived and it is exactly the same as the Minor trunnion EXCEPT the thread for the kingpin is larger and so it cannot be used. Every other dimension is the same as the Minor.

Posted: **Sat Apr 05, 2008 7:19 pm**

hmm thats interesting, maybe i have an earlier marina kingpin, is that possible they changed the thread size

Posted: **Sat Apr 05, 2008 7:26 pm**

Or maybe commercial/car versions
a

Posted: **Sat Apr 05, 2008 7:40 pm**

thats a possibility BG

Posted: **Sat Apr 05, 2008 9:33 pm**

It's otherwise exactly same as Minor. There is a printed note with the part to say it's not suitable for Marina TC - that's all!

Morris Minor Owners Club

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marina trunnions