Longer studs for new (thicker) sump plate - B31

Started by chrisb, 04 Jun, 2020, 20:03

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chrisb

As part of my B31 (1954) refurbishment, I bought one of these alloy sump plates with a removable magnetic drain plug:

https://www.feked.com/bsa-sump-plate-m-and-b-models-billet-alloy.html

Unfortunately, the existing studs are much too short to fit.  Does anyone know where I can get longer studs, or even suitable Whitworth bolts?  The threads measure 6.3mm outside diameter.  Many thanks.

DAVE BRADY

#1
Hi,

It may be worth asking Feked if they have them.  They must know that longer studs are needed so why not offer them at the same time.

Dave.

Feked do sell s/s Whitworth Allen screw sets so could well have the studs or Allen screws that you need.

idie

On Ebay 113722059510 stainless steel studs, nuts and washers.

chrisb

Quote from: idie on 04 Jun, 2020, 20:17
On Ebay 113722059510 stainless steel studs, nuts and washers.

Many thanks!   Will look it up..

(I emailed Fecked a few days ago but they haven't replied, and I couldn't see anything that looked suitable on their site). 

Pete C

As you will not have to remove it as often as you would with the standard sump plate (as it has a drain plug) you could just use allen screws. As long as you are not too brutal you shouldn't run too much risk of stripping the threads in the crankcase.
I have fitted these to all my bikes and went to the trouble of making studs to fit, then wondered why I bothered!!

cheers
Pete

Bess

Hi,
    If there's gauze filter fitted, I prefer studs to fix the sump plate. The filter needs periodic cleaning and any issues with the thread will be on the studs not the casing.

Worth a look here, very professional with wide range of excellent fixings:

https://www.motalia.co.uk/bsa.html

Best wishes...

Blackthou

Thanks for the tip re studs Bess. Look pretty reasonably priced too.