Foz Posted March 22, 2016 Share Posted March 22, 2016 What would the symptoms be of a dropped valve ? I was out earlier on my bandit 12 and after a blast along a long straight it seemed to feel as though the bike had dropped onto 3 1/2 cylinders ,the bike still got me home and still ticked over /started ok. I've the Checked plugs etc and all is fine , the bike seems to rev cleanly now it's back in the garage. I don't know if it's something wrong with the fuelling due to the rs38's nor quite being set up as yet or whether it's perhaps one valve that's gone out of clearance or worse still a bent valve. The head is ported and flowed with heavy duty valve springs and gsxr cams but wouldn't have thought that would have been an issue Quote Link to comment
KATANAMANGLER Posted March 22, 2016 Share Posted March 22, 2016 A compression tester would tell you if you have a compression issue ( which you would expect if it was a valve) If you dont have markedly lower compression on any one cylinder you can rule out a valve. If you have a much lower compression figure on one pot a leak down test would confirm it was a valve and not a ring. Its a sure fire way of ruling out the issue you have raised. Quote Link to comment
Gpz1100_Convert Posted March 22, 2016 Share Posted March 22, 2016 also, check the rs carbs. If the screws on the eccentric bolts holding the slides level loosen under the top covers then one goes out. It feels like one pot running like a pig. Mark Quote Link to comment
Foz Posted March 22, 2016 Author Share Posted March 22, 2016 That's what I'm going to look at next Mark, the carbs were a bit of an unknown so I'm hoping it's something like that rather than worse case scenario Quote Link to comment
Gpz1100_Convert Posted March 23, 2016 Share Posted March 23, 2016 I found a chewed up screw in the eccentric of mine. just don't ask how many other 'non broken' things I fixed before I found it...... Quote Link to comment
Foz Posted March 25, 2016 Author Share Posted March 25, 2016 The clip had come off the needle on one of the carbs , so all sorted now. 2 Quote Link to comment
johnr Posted March 25, 2016 Share Posted March 25, 2016 yay! dont you love a cheap fix! 1 Quote Link to comment
strima Posted March 25, 2016 Share Posted March 25, 2016 Happy days, if only most things in life were that simple... Quote Link to comment
KATANAMANGLER Posted March 26, 2016 Share Posted March 26, 2016 We always imagine the worst. Gald to hear you were just being paranoid Quote Link to comment
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