SOHC.co.uk Forums > CB750
Help! What's caused this?
Nurse Julie:
I suppose in theory, even though oil is observed getting up to the cam on a newly rebuilt engine at initial start up, it could take a few miles of riding to dislodge any debris that is in the bottom end, such as the dreaded silicone sealer, blobs of glass bead etc, etc.
Bristolbadger:
--- Quote from: Bryanj on March 25, 2022, 03:39:38 PM ---That was caused by crap blocking the oil jets, did you use silicone goo on the crankcase?
--- End quote ---
Oh man I'm still reeling from this discovery and blocked jets weren't really a fear as I was meticulous on the engine build, especially after the 2nd engine lift out where I had to go into the gearbox... and followed Hackaweeks channel and was careful with the jets and their surround rubbers, the dowels, the rubber pucks etc as I knew the implications after his explanation and Hondaman's and all was spotless putting bottom and top end back together. I used the Permatex ultra grey on the cases and was super sparing with it so minimal chance of any squidge out coming off and blocking the jets.. already if at all.
I bench tested the oil circ and it was squirting up to all the right places on the rockers - I took a video off it and will upload and link to it here.
Starting to lose faith with this now, not sure I've the time, space or money to get this repaired even if I could find the parts. Gutted :(
Nurse Julie:
Don't give up, it's all sortable. Be positive, at least you haven't had oil starvation to the bottom end.
Laverdaroo:
Just had a quick chat with Nick, (Bristol Badger) and I'm gonna bob over for a moan n a brew tomorrow and see if we can form a plan and a list. There's gonna be a bunch of questions coming and some desperate;y seeking requests me thinks. ;) :)
Nurse Julie:
--- Quote from: Laverdaroo on March 25, 2022, 05:55:23 PM ---Just had a quick chat with Nick, (Bristol Badger) and I'm gonna bob over for a moan n a brew tomorrow and see if we can form a plan and a list. There's gonna be a bunch of questions coming and some desperate;y seeking requests me thinks. ;) :)
--- End quote ---
Well done Roo
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