CL175K6 "Frame Over Engine" engine removal

Thanks for the input RockReef and Ray. If I can confirm that the kick starter works and does not require opening up the lower end, I'm inclined to leave the lower end as is. From my limited ability to peer into the various internals, it seems that the inside of the motor is fairly clean and lubricated but for the top 3/4" of the cylinder sleeves as seen in the pictures.
 
Ray - I really enjoyed reading through your CB175 K5 rebuild thread. You did amazing work!

CB2NR said:
Engine disassembly, inspection and reassembly can be daunting. I plan on doing another detailed 175 project in the fall/2021 (will be posted on this forum). It will be similar to the ‘71 CB175 restoration that was done a while back.
Heres a link. Hope it helps and inspires you to complete your project.

1971 CB175 K5 Restoration
Click to expand...
 
@Rickhoutx I received your message through email but the forum will not let me return the message for some reason. Congrats on the bike man it looks awesome and definitely worth the time and effort once it’s up and running. This thread is really interesting from my view it’s like watching a buddy date the girl you had your eye on. I’m glad you decided to bring this bike back I was THIS close to buying it until wiser minds told me I didn’t have the space to work on it (family and girlfriend.) Cheers, I look forward to seeing the progress we’ll have to start a Texas CL175 club.

Oh and for mechanics in my area, Limey Bikes and Revival Cycles have been very reliable, albeit expensive. Austin City Powersporrs as well. Wish I could help more with Houston area but I’m there mostly for visiting weekends. Cheers!
 
Remove the left covers and check stator. If it's oily bottom end should be OK as the sump is way lower than any 'important' pieces.
You can strip bottom end just to see what's in there and it may be worthwhile to know as all Honda Twin motors are pretty similar in construction (do one, you pretty much have done them all from 1966~1980)
You don't remove liners for boring and you probably have to tell machine shop they can't bore more than 0.010" at a time as liners probably have only 0.001"~0.002" interference fit (recommended is usually around 0.003"~0.004" or more on larger cylinders.
The liners are quite thick so may be possible to bore substantially oversize (2mm~3mm bore increase)
Unfortunately I haven't done a 175 motor for a very long time (mid 70's when I bored a CB160 for 175 pistons for my CD175 'sleeper')
As it would lift front wheel at 60mph I believe it was a success.
If you want to remove liners, just sit them on a metal plate in oven at about 325~350f, you'll know when it's hot enough as liners will be standing upandf block will have dropped
 
You must log in or register to reply here.
Back
Top Bottom