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CB750 Barn find project - First Timer
Underdog1:
Been reading through the shop manual and it seems just to do the top end i need a myriad of tools including:
a micrometer, inside dial gauge, valve remover tool, valve guide remover, small dial gauge, valve guide driving tool, valve guide reamer, vernier caliper, cylinder gauge and probably a few more.
Obviously doing it this way is mega by the book, what i'd like to know is if there is some sort of list of the common things that need to be done or is it a case of absolutely everything needs to be put under the microscope? Im not one to cut corners but just thought I'd check before i shell out for a load of tools ill probably only use once.
I cleaned up the cylinder head cover and barrels today as they were still pretty filthy. Got the pistons out to measure the ring piston gap (which are all < 0.1mm on each) and cleaned up the pistons (one of the piston rings fell apart as i took it off :-\).
The top of all the pistons look like this (the bits with carbon left on are low spots):
Is this a red flag or typical wear?
Bryanj:
Normal(ish)
Underdog1:
--- Quote from: Bryanj on December 05, 2016, 07:54:56 AM ---Normal(ish)
--- End quote ---
just waiting on some micrometers to arrive in the post so I can measure a few things up, apart from the piston diameter at the skirt end 90 degrees to the hole being less that 60.85mm and the piston ring grooves being excessively worn is there anything else I should look out for?
Also I need to get a valve spring compressor, is there a need to spend much money on this or will a cheap flea bay one do the job just as well?
http://www.ebay.co.uk/itm/262711661056?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
This project is going along painfully slow at the moment as I've been really busy at work and will be off out the country for another 5 weeks in Jan. Need to try and get as much as I can done over xmas!
On a positive note I bought a cheap engine stand and adapted it to hold a motorbike engine, probably £50 all in which I was happy with! Will get some pics up when my phone stops being so tempermental.
Underdog1:
Here she is, living room engineering at its finest!
MarkCR750:
Nice work!
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