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CB750 Barn find project - First Timer
Underdog1:
--- Quote from: Trigger on August 10, 2018, 09:49:53 PM ---I would be welding that damage. Once the spring is under the correct tension it may break the rest of the case.
While the engine is out i would be investigating why the oil is not getting to the top end. It only takes a little sliver of Honda bond to block the oil ways and the jets. Check that you have all the correct 0'rings in place, as one missing or wrong size 0'ring will effect the oil pressure ;)
--- End quote ---
If it’s getting to the oil filter but not up to the top does this narrow things down at all? Feel like I’m back to square 1 now if I strip the top end down again!
Trigger:
I feel your pain. But, from what you have said, the oil has only got from the pump to the filter. That is about 8 inches :o
There is no point solving the kick start when you still have other issues.
Underdog1:
--- Quote from: Trigger on August 10, 2018, 10:13:08 PM ---I feel your pain. But, from what you have said, the oil has only got from the pump to the filter. That is about 8 inches :o
There is no point solving the kick start when you still have other issues.
--- End quote ---
I’m going to do some more reading on this, there’s a lot of threads out there with people struggling to get pressure after a rebuild and have got round it by fillin from the oil gallery plug on the rhs and pouring lots of oil in the top end. One suggested spending 15 minutes running the starter on and off to build sufficient pressure and some others said they just had to run the engine to get pressure as nothin else worked! Be nice to have a bit more assurance than a suck it and see approach :o
Trigger:
Don't believe everything you read, when it comes to getting pressure up on these engines. Never do it off the starter motor, it will burn it out. Never put oil in the top end, as you will never know if oil is getting there, if it is already put there.
Over the years i have built more than 200 of these engines and i have never failed to get full pressure. I have rebuilt a lot of engines were people have failed to get pressure ;)
As Bryan and Oddjob will tell you. We call most of these people Sunday mechanics in the trade. They will be in Halfords on a Saturday, try to fit the parts on the Sunday and would be in our workshops on the Monday, asking what went wrong and could we sort it ;D ;D
You have just got to get in there and get it right. The pro advice is here on this forum ;)
Underdog1:
Don’t suppose JB weld would have its place in this sort of repair (obviously clutching at straws here!)
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