SOHC.co.uk Forums > CB350/400
Where is the valve guide?
Athame57:
I took a very smokey and rattley Elen into the workshop today. Best case scenerio needs a new valve guide (Brazilian english?) worse a holed piston or something. We shall see when the lid comes off. But I couldn't find a valve guide in the CMSL plan here..... can anyone help?
K2-K6:
Items 58/59 are the valves ... guides are a "tube" around the outside of those nd don't appear to be in illustration.
They are pushed into the head casting to be fitted, then the valves threaded through them ... to then have their springs etc installed at the top end to hold and control them.
Effectively the guide is concentric to the valve stem/shaft in location.
TrickyMicky:
Hello mate, sorry you looked at the wrong picture, they are show on the same page as the cylinder head. Part Nos:- Inlet guides - 12202333315.
Exhaust guides - 12203333335.
DSS can obtain them for you, check price!!!
The CMSNL site shows them as being in stock at what seems to be a lesser price, but I do not know anything about their postage and packing.
TrickyMicky:
Megazip in Japan also have them in stock, reasonable price, 20% discount until end of today, BUT! often have unbelievable shipping charges. Have fun. Mike.
exvalvesetdabbler:
Its the rubber valve stem seal that stops the oil going down the valve stem into the cylinder. First sign of problems with them is a puff of smoke at start up or when snapping the throttle closed at high revs. Mostly a progressive issue over time as they wear and harden.
The smoke is that of burnt oil and not petrol as over fuelling by a flooded carb.
Crankcase breather tube not blocked of kinked
Broken piston ring is a possibility
I would do a compression or leak down test first before tearing into the engine.
Regards
Dave
Navigation
[0] Message Index
[#] Next page
Go to full version