I have just replaced the bypass hose adapter in an 'A' Series head with a blanking plug.
The blanking plug available from Mini Sport has the correct thread 5/8" x 16 TPI Unified Special (UNS) they are down to the last few blanking plugs so if you intend to blank the by-pass hose adapter get in quick now. https://www.minisport.com/88g619-cylind ... escription
Mini Sport by-pass hose adapter is also the correct thread. https://www.minisport.com/12a2075-cylin ... e-kit.html
Some of the blanking plugs and adapters available from other sources are 5/8" UNF and are not suitable for this application.
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Last edited by philthehill on Sun Aug 21, 2016 11:09 am, edited 2 times in total.
Rob
Mini Sport are the only source of correctly threaded adapters and blanking plugs I have found up to the present time and their stock level is very low.
If anyone knows of another source of correctly threaded adapters and blanking plugs please post details on here.
Phil
Note:- This is the same thread as the starter dog/set screw.
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