SOHC.co.uk Forums > CB750

Compression Tester Size

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Garryk:
Hi,
Im about to buy a compression tester from Halfords the size is 14mm and 18mm I was wondering will this fit my 1975 CB750K5 Four.
Garryk

mickwinf:
Hi Garryk, the compression testers tend to be in sizes suitable for cars, the sohc bikes use smaller threads. My 500 uses 10mm but not sure about the 750, you will need to buy an extra adapter of the correct size. If it is a gunson brand they are easily available, regards Mick

Garryk:
Mickwinf,many thanks for your quick reply and help.
Not really sure what way the thread size works,so hoping someone with the same model will let me know,after reading your thread I checked Ebay and noticed there is some tester on there with a lot of extra adaptors,
Cheers
Garryk

Bryanj:
All the fours are 10mm mate

Garryk:
Bryanj,thanks for the quick reply and help.
Noticed a compression tester on Ebay for sale with different adaptors and theres a 10mm adaptor in it, so of to Ebay for me.
Thanks Again.
Respects to everyone on this forum for all the help they have given me.
Respects
Garryk

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