SOHC.co.uk Forums > CB750
Water coming from exhaust
Bryanj:
As i remember you have a NOS standard exhaust and they are fairly restrictive with a lot of backpressure which dont help the warmup
UK Pete:
--- Quote from: Bryanj on February 20, 2011, 11:41:23 AM ---As i remember you have a NOS standard exhaust and they are fairly restrictive with a lot of backpressure which dont help the warmup
--- End quote ---
I wish my exhaust was NOS, it is quite good but nowhere near new, the headers were only used on a bike for a year before the owner took them off , the end can looks really nice till you see the underside where there is a big load of gravel rash, but on the whole its quite good
Pete
K2-K6:
If you are confident of no underlying problems with oil etc then run it at about 2000rpm for about 15mins and it should dry the water out of the system and get it all hot enough. DON'T keep blipping the thottles though as the accelerator pump dumps enough fuel to make it go gltch free under max load and is far too much to burn properly without load.
Didn't some of the Honda pipes have a small hole at lowest point to let out moisture like this? don't know if F2 has one, I've got one stored so I'll have a look.
kaceyk2:
Forgot to mention pete, water from the exhaust is actually a very Good sign.. next time you are in a tesco carpark or asda or morrisons... ( I nearly didn't put morrisons cos You allready got the Idea,but then I remembered morrisons do really good rottiseried chickens that you can eat immediately on leaving the shop) Anyways, take a look at car tail pipes, (and you will soon not be able to help it!) an engine thats running and combusting well will kick out water from the exhaust. Cars are a good example in car parks cos you can see the water dripping out easy on the floor. The ones that dont usually have black sooty tailpipes (because they are running rich) If an engines is well tuned in terms of air to fuel, the air contains water vapour, and water cannot be compressed,only changed, in your motor to steam which gets kicked out, condenses again back to water and pisses out your exhaust... a "dry" tail pipe is a sign a motor is running lean.... not good especially on these old girls of ours......The K2 has drain holes (which have to be kept clear) underneath on each pipe to stop water collecting there when the bike has been switched off, but the advice is not just to start it and let it idle and then switch off but to make sure its been well into operating temp for a while before you do.......
kaceyk2:
mistake...meant to say a totally dry tailpipe can point to running rich......(not enough air) was still thinking about the chicken....mmm..."extra tasty" is my favourite..
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