Honda-SOHC

Which inside dia pipe do you need the measurements from?

https://www.davidsilverspares.co.uk/tubes/

Yes,

but not exactly addressing your question.
 

I bought a low mileage cylinder block with 300 type pistons from the USA, which replaced the 392 higher compression pistons and rust damaged cylinder block on my UK F1.

Every thing fitted OK and performance seemed similar.


Hope this helps.

Stopped off at the CB750 Four club rally last month in Bavaria on our journey to Shetland.

Some nice stuff.


Please click link below to view photo album.

Enjoy.

https://photos.app.goo.gl/RC4xsFjDGHjznvdU7

At Lerwick last week waiting to board the overnight ferry to Aberdeen.


Chatting with a lady riding a 900 Tiger on her way to Aberdeen for a service.

Waiting for a ferry across the river Rhine in Germany.

Glad we arrive here after the heat wave, 25c now and acceptable for motorcycling.

 

Not very warm here today.

I use them on other bikes.  It more convenient/faster than futzing around with vacuum or pressure bleeders on such small systems.  I have both and use the pressure bleeder for cars but I can bleed motorcycle brakes faster using the bleeder valve when you factor in the time it takes to get the vac or pressure bleeder out, set it up and then put it back away.

Never found a need for this on my 750, I normally just loosen the bleed nipple and let it gravity bleed without pumping the brake lever.
Tighten the bleed nipple when bubbles stop appearing and Bob's yer uncle.

Brake fluid change every 2 years is enough to keep any corrosion at bay. 


Good luck