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Which Oil Filler Cap For My Alloy Rocker Cover?

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#1 LittleRedRocket

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Posted 28 April 2020 - 10:26 PM

Hello All,

I am 15 years old and have a 1979 Mini 1000 with a MG Metro 1275 engine. I have an alloy rocker cover that I would like to fit to my Mini. I have bead-blasted the rocker cover and have plans to paint it (See attached photos). I am unaware of the history of this rocker cover, but I need a oil filler cap before I fit it. I have looked on Mini Sport as well as, Mini Spares and Mini Mania, and I am not sure which cap, if any will fit. Does anyone know any history about this rocker cover and what oil filler cap will fit?

 

After bead blasting

Attached File  IMG_6003.JPG   38.34K   6 downloads

 

 

Before bead blasting

Attached File  IMG_4546_Fotor.jpg   61.43K   7 downloads

 



#2 nicklouse

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Posted 28 April 2020 - 11:20 PM

Any will fit.

It it may have come with something special.



#3 LittleRedRocket

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Posted 28 April 2020 - 11:22 PM

Any will fit.

It it may have come with something special.

Notice how the lip is on the outside? A fuel cap almost fits. But most rocker covers have the lip/thread on the inside. 


Edited by LittleRedRocket, 28 April 2020 - 11:32 PM.


#4 Bens mini 66

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Posted 29 April 2020 - 12:06 AM

Do you have a cap you could try to fit onto it?



#5 LittleRedRocket

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Posted 29 April 2020 - 12:43 AM

Do you have a cap you could try to fit onto it?

Like I said, a fuel cap is close, but rocker covers almost always have the thread/lip on the inside so I don't have any that are remotely close.


Edited by LittleRedRocket, 29 April 2020 - 12:44 AM.


#6 LittleRedRocket

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Posted 29 April 2020 - 01:11 AM

Anyone have any ideas?



#7 Moke Spider

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Posted 29 April 2020 - 02:51 AM

It looks to me like it would take something in a similar style to a Radiator Cap, only bigger and suited to the job.



#8 GraemeC

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Posted 29 April 2020 - 06:21 AM

That’s a nice HRG rocker cover, originally made for in-line A series engines (if it still had its original badge it would be backwards when fitted onto a Mini).

They originally had a cap made by a company called Ceandess. I think the caps are still available, but I’d need to ask some questions of a knowledgeable friend as to who makes/supplies them now.

 

Pm'd


Edited by GraemeC, 29 April 2020 - 08:32 AM.


#9 KTS

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Posted 29 April 2020 - 07:05 AM

some background on HRG rocker covers below

 

http://mk1-performan....co.uk/hrg.html



#10 gazza82

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Posted 29 April 2020 - 11:55 AM

The breather pipe doesn't look original either .. looks more like 1/2" plumbing copper!



#11 LittleRedRocket

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Posted 29 April 2020 - 06:07 PM

Does anyone know if this cap will fit?

https://ceandess.onl...ck-019740010cab (of course without the dipstick)

 

Does anyone else have any other suggestions for a cap that will fit?

 

(and yes the breather is just 1/2" copper, it wasn't me though)

 

Thankyou everyone for your help!


Edited by LittleRedRocket, 29 April 2020 - 06:08 PM.


#12 KTS

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Posted 29 April 2020 - 09:41 PM

That one looks to be 5.5" so probably a bit big.

What's the diameter of the neck on the rocker cover?

#13 LittleRedRocket

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Posted 29 April 2020 - 10:04 PM

Attached File  IMG_6121_Fotor.jpg   33.87K   1 downloads

Attached File  IMG_6122_Fotor.jpg   47.69K   1 downloads

Yep, way too big

 

Maybe this?

https://ceandess.onl...ick-05758000zkb

or this?

https://ceandess.onl...ted-0334200azfb

 

or other?

https://ceandess.online

 



#14 GraemeC

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Posted 29 April 2020 - 10:14 PM

Most likely:

https://ceandess.onl...r-without-chain

but contact them with your pictures, they will advise exactly what to measure.



#15 brivinci

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Posted 21 October 2020 - 07:17 PM

This might day a day late and dollar short but I have a different period finned cover (like the standard alloy ones fitted to Metros) that uses a ceandess 02139000ZKB cap...at least that us what Katie over there told me. Same cap used on Triumph motorcycles. My rocker is vented as well and came with a non-vented cap. Not sure it matters unless you block off your vent on the cover...then you will need one in the cap.







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