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CB750 Barn find project - First Timer
Trigger:
--- Quote from: royhall on July 26, 2016, 01:14:37 PM ---Not seen that video for a while but from memory, I think he does it that way so he can fit one piston at a time instead of having to deal with all four. In avoiding that one small issue he creates many more issues. Really weird way of doing it.
--- End quote ---
I have never seen so many school boy errors.
JamesH:
--- Quote from: Underdog1 on July 25, 2016, 09:57:13 PM ---
--- Quote from: Spitfire on July 24, 2016, 07:58:40 PM ---This might help finding a caliper.
http://www.sohc.co.uk/index.php/topic,1562.0.html
Cheers
Dennis
--- End quote ---
Yeah that may well come in handy, cheers bud!
--- Quote from: Rob.b on July 25, 2016, 09:06:13 PM ---Underdog, I'm so sorry, I seem to have inadvertently thrown a metaphorical spanner into your thread, now it's all about that fella on Youtube. Is he Australian Perhaps; and could that be why he builds engines upside down. 8)
I'm new here myself, but from what I've read.on this excellent forum I feel sure that you are eventually going to find all the information and help you could ever want.
Rob
--- End quote ---
Hah no worries!
So i only managed to get 30 minutes or so poking about the old girl today as i finished work late. Took the ignition off at the block connector, connected a good battery touched the spade connectors for the red and black wires and didn't get anything.. no electrics.
Hopefully this is a fault at my end as the advert did state that the bike turned over with a good battery, is there a better way to bypass the ignition?
Now I've got the lock off anyone know a way i can find the key code (on I'm assuming the lock barrel) without destroying it?).
Now the tanks off I'm a little confused by the fuel line set up.. the petcock has 2 outlets but i can only see one fuel line fitted (nothing was actually connected up though) which has a T junction to seemingly feed a each pair of carbs. So this set up means all the carbs are fed off just one petcock outlet.. I'm probably being an idiot here but whats the other petcock outlet for? ;D
As a bonus, heres the inside of my petrol tank the dirty old girl
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Good news is the carbs are probably original to the bike. The K5/6 US models switched the petcock (fuel tap) to the LHS with a single fuel outlet. They did this as a safety update so if a rider hit reserve they could switch the tap with the left (non throttle) hand.
Looks like you have a K2 tank and seat fitted. The K2 tank has the fuel tap (with two outlets) on the RHS.
Given the rusty fuel tank, get yourself one of these so you don't contaminate the carbs (once you've checked and cleaned them) when you first run the bike after basic inspection / servicing..:
https://www.ebay.co.uk/itm/351510130564
I've recommissioned several US import 750's and they are generally pretty bullet-proof. Do yourself a favour and get her running nicely first before you start spending out too much...
James
Underdog1:
--- Quote from: Jamesh_sussex on July 26, 2016, 04:57:20 PM ---Looks like you have a K2 tank and seat fitted. The K2 tank has the fuel tap (with two outlets) on the RHS.
Given the rusty fuel tank, get yourself one of these so you don't contaminate the carbs (once you've checked and cleaned them) when you first run the bike after basic inspection / servicing..:
https://www.ebay.co.uk/itm/351510130564
I've recommissioned several US import 750's and they are generally pretty bullet-proof. Do yourself a favour and get her running nicely first before you start spending out too much...
James
--- End quote ---
Ah that would explain it, i take it i can just run two fuel lines from it (one to each pair of carbs)?
Just bought that remote fuel tank, was literally about to bodge one together out of an old petrol can and hosepipe ;D
Started work on cleaning the rust out the tank
Gwarn science lad!
Underdog1:
No real progress so far, the key i ordered still hasn't turned up and i haven't been able to get the ignition on by using a decent battery and connecting the red and black ignition wires.
Wish i had just bought an aftermarket ignition and key as it would have been the same price and would be here by now!
The 40 year old wiring looks crusty and a lot of the connectors look well past there prime, i think I'm going to rewire the entire bike at some point as it looks like the wiring can be simplified a bit and will at least last a while then.
I found this schematic online, is this a good place to start?
AshimotoK0:
Looks OK ..no horn or indicators though. If I was doing a non-standard rewire I think I would use sealed Deutsch connectors for perfect weather protection
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