SOHC.co.uk Forums > CB650

Over heating

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JamesH:

--- Quote from: hairygit on June 21, 2018, 09:41:30 PM ---If you're running standard jetting with pods, it's running weak, and you are running the risk of holing a piston if it gets too hot. Did you rebore and fit new pistons? Running new pistons in it will run hot for a while, but weak jetting and pods is heading for meltdown. Why use pods, no stock airbox?

--- End quote ---
What he said. Unless you’ve adjusted the jetting sounds like you’re more than likely (almost certainly in fact) running lean without the standard airbox.

tosh:
Sounds like it could well be running lean then, I’ve no standard air box as the bike as it came in box’s of rusty bits and is ,well, a mongrel as it’s a 78 550 frame and swing arm with a 79 650 motor and forks, any suggestions on where to go with the jet size it has stock 92 mains in do I just go up a couple of sizes ?

Johnwebley:


  check the plug colour,should be a nice tan/pale brown ,  the whiter it is ,the hotter it is !!

tosh:
Running far to lean as the plugs are white white so built some restrictors to sit in between the pods and carbs as a temporary solution running much better and cooler now ;D

royhall:
If you can, put the standard airbox back on. Pods really are not worth the pain. You won't be able to touch the engine anyway without leaving skin behind, but it will probably be running lean.

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